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Note: This page contains sample records for the topic "frequency drives vfds" from the National Library of EnergyBeta (NLEBeta).
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1

Variable Frequency Drives: Energy Savings and Impact on Motor Performance  

E-Print Network (OSTI)

Variable frequency drives (VFDs) have found widespread application in recent years. VFDs are valued for their potential to save energy and improve processes. Reliability has improved significantly, but there are still pitfalls to be addressed in properly applying VFDs. The benefits and pitfalls in applying VFDs that will be addressed by this paper include- Benefits: Energy Savings, Improved Process Control, “Soft Start” Reduced Mechanical Stress, Improved Electrical System Power Factor, and Pitfalls: Motor Acoustic Noise, Motor Heating. This paper is intended for plant engineers and maintenance personnel who have some practical experience with electrical and mechanical equipment, but are not VFD experts.

Petro, D.

1993-03-01T23:59:59.000Z

2

Use of VFDs on Asphalt Plant Induced Draft Fans  

E-Print Network (OSTI)

Studies of 10 asphalt plants in the Intermountain Region have identified average ID fan energy savings of 68% by controlling airflow using Variable Frequency Drives (VFDs) on the fan motors in place of damper control (inlet or outlet). Average paybacks were 3-5 years before utility incentives. In the 10 plants evaluated, the ID fans accounted for as much as 30% of the total plant electrical consumption. In the majority of these plants the outlet dampers were typically 50%-60% closed. Fan motors ranged from 200 Hp to 500 Hp. With approximately 3,600 existing asphalt plants in operation across the United States, a large opportunity for retrofits exists. Working with manufacturers and owners, a new standard can be established for installing VFDs on all plants.

Anderson, G. R.; Case, P. L.; Lowery, J.

2005-01-01T23:59:59.000Z

3

Comparing Two Types of Magnetically- Coupled Adjustable Speed Drives with Variable Frequency Drives in Pump and Fan Applications  

E-Print Network (OSTI)

This paper presents the results from laboratory tests on MagnaDrive Corporations fixed-magnet magnetically-coupled adjustable speed drive (MC-ASD) and Coyote Electronics electromagnetic MC-ASD as compared to a typical variable frequency drive (VFD) for typical fan and pump loads. It also discusses advantages and disadvantages of using mechanical MC-ASD versus VFDs and it provides field experience with VFDs in refrigerated warehouses as well as the fixed magnet MC-ASD in wastewater and other field applications. Laboratory tests for a 50 hp fan retrofit showed electronic VFD savings at 62%, the MagnaDrive Coupling at 39% and PAYBACK Drive at 46%. At $0.06/kWh and list prices, the simple payback for the VFD is 2.4 years, the MagnaDrive is 4.6 years and the PAYBACK is 1.9 years. MagnaDrive has models from 25 to 500 hp while PAYBACK has models from 3 to 200 hp. Contractors to the Northwest Energy Efficiency Alliance have helped to install VFDs for about 300 evaporator fans in over two dozen refrigerated warehouses and to install fixed-magnet MC-ASDs in about 50 applications with about half of these controlling wastewater pumps. The Alliance has no particular field experience with the electcromagnetic coupling. The primary advantages of magnetically coupled adjustable speed drives (MC-ASD) over VFDs come from reduced maintenance, resistance to dirty environments, separation of load vibration from the motor, and less stringent requirements for precise shaft alignment. Field experience indicates reductions in noise and repairs from vibration loads, tolerance of poor electrical power quality, and ease of installation are often more important than energy savings. The MC-ASDs are being used where VFDs have not survived or are considered too complicated.

Anderson, K. J.; Chvala, W. D.

2003-05-01T23:59:59.000Z

4

High Frequency Effects of Variable Frequency Drives (VFD) on Electrical Submersible Pump (ESP) Systems  

E-Print Network (OSTI)

Variable frequency drives (VFD) and subsea (umbilical) cables are frequently used in electrical submersible pump (ESP) systems for offshore platforms. There are two basic system configurations for ESP systems; VFD can be installed on the platform and the motor is connected to it through an umbilical cable, and VFD and the motor are installed closely and they are connected to the system through an umbilical cable. In this thesis, the pros and cons of each configuration are mentioned, but the focus is on the system with a VFD controlled motor through a long umbilical cable. A 36-pulse VFD is studied. Since multilevel VFDs have high frequency harmonics, high frequency modeling of the umbilical cable is used, and skin effect is also taken into consideration in the cable. The effect of the interactions between the umbilical cable and high frequency harmonics on the motor terminal voltage is explored.

Ozkentli, Esra

2012-08-01T23:59:59.000Z

5

List of Motor VFDs Incentives | Open Energy Information  

Open Energy Info (EERE)

Motor VFDs Incentives Motor VFDs Incentives Jump to: navigation, search The following contains the list of 352 Motor VFDs Incentives. CSV (rows 1 - 352) Incentive Incentive Type Place Applicable Sector Eligible Technologies Active AEP (Central and North) - CitySmart Program (Texas) Utility Rebate Program Texas Commercial Industrial Institutional Local Government Schools Boilers Central Air conditioners Chillers Comprehensive Measures/Whole Building Custom/Others pending approval Energy Mgmt. Systems/Building Controls Furnaces Heat pumps Lighting Lighting Controls/Sensors Motor VFDs Motors Roofs Windows Yes AEP (Central, North and SWEPCO) - Commercial Solutions Program (Texas) Utility Rebate Program Texas Commercial Industrial Institutional Local Government Nonprofit Schools State Government

6

Analysis and Simulation of Mechanical Trains Driven by Variable Frequency Drive Systems  

E-Print Network (OSTI)

Induction motors and Variable Frequency Drives (VFDs) are widely used in industry to drive machinery trains. However, some mechanical trains driven by VFD-motor systems have encountered torsional vibration problems. This vibration can induce large stresses on shafts and couplings, and reduce the lifetime of these mechanical parts. Long before the designed lifetime, the mechanical train may encounter failure. This thesis focuses on VFDs with voltage source rectifiers for squirrel-cage induction motors of open-loop Volts/Hertz and closed-loop Field Oriented Control (FOC). First, the torsional vibration problems induced by VFDs are introduced. Then, the mathematical model for a squirrel-cage induction motor is given. Two common control methods used in VFD are discussed - open-loop Volts/Hertz and closed-loop FOC. SimPowerSystems and SimMechanics are used as the modeling software for electrical systems and mechanical systems respectively. Based on the models and software, two interface methods are provided for modeling the coupled system. A simple system is tested to verify the interface methods. The study of open-loop Volts/Hertz control method is performed. The closed-form of electromagnetic torque sideband frequency due to Pulse Width Modulation is given. A torsional resonance case is illustrated. The effects of non-ideal power switches are studied, which shows little in uence on the system response but which uses little energy consumption. A study of a non-ideal DC bus indicates that a DC bus voltage ripple can also induce a big torsional vibration. Next, the study of the closed-loop FOC control method is presented. Simulation for a complete VFD machinery train is performed. With the recti er and DC bus dynamic braking, the system shows a better performance than the ideal-DC bus case. Lastly, a parametric study of the FOC controller is performed. The effects of primary parameters are discussed. The results indicate that some control parameters (i.e. speed ramps, proportional gain in speed PI controller) are also responsible for the mechanical torsional vibration.

Han, Xu

2010-12-01T23:59:59.000Z

7

Frequency modulation drive for a piezoelectric motor  

DOE Patents (OSTI)

A piezoelectric motor has peak performance at a specific frequency f.sub.1 that may vary over a range of frequencies. A drive system is disclosed for operating such a motor at peak performance without feedback. The drive system consists of the motor and an ac source connected to power the motor, the ac source repeatedly generating a frequency over a range from f.sub.1 -.DELTA.x to f.sub.1 +.DELTA.y.

Mittas, Anthony (Albuquerque, NM)

2001-01-01T23:59:59.000Z

8

Texting while driving on automatic: Considering the frequency-independent side of habit  

Science Conference Proceedings (OSTI)

This study tested the potential of the frequency-independent components of habit, or automaticity, to predict the rate of texting while driving. A survey of 441 college students at a large American university was conducted utilizing a frequency-independent ... Keywords: Automaticity, Driving, Habit, Mobile, Phones, Texting

Joseph B. Bayer; Scott W. Campbell

2012-11-01T23:59:59.000Z

9

ESP-The Electrical submersible pump. Part 7. Applying variable frequency drives to ESPs  

SciTech Connect

To keep pace with technology, the oil industry has begun using variable frequency drives on electrical submersible pumps. Applying variable frequency drives on ESPs began seriously in 1977. In March 1983, there were approximately 350 variable frequency drives successfully operating on electrical submersible pumps throughout the world. Three types of variable frequency drives available today are the current source inverter, the pulse width modulation, and the variable voltage source inverter. As all three types have good points and bad, a short discussion of each type is essential to understand why the variable voltage inverter is used most often in oil field applications and why it has been a success. A current source inverter typically uses a phasecontrolled rectifier to generate variable DC current. The phase-controlled rectifier produces the required current which is subsequently filtered by a DC link reactor. The inverter then produces the desired variable frequency current and the motor voltage varies with load.

Watson, A.J.

1983-11-15T23:59:59.000Z

10

Offshore operations report. ESP - the electrical submersible pump. Part 7. Applying variable frequency drives to esps  

SciTech Connect

The oil industry has begun using variable frequency drives on electric submersible pumps. In March 1983, there were approximately 350 variable frequency drives successfully operating on electrical submersible pumps throughout the world. Three types of variable frequency drives available are the current source inverter, the pulse width modulation, and the variable voltage source inverter. A short discussion of each type is given to explain why the variable voltage inverter is used most often in oil field applications and why it has been a success.

Watson, A.J.

1983-11-15T23:59:59.000Z

11

Brief paper: Multi-frequency disturbance rejection via blending control technique for hard disk drives  

Science Conference Proceedings (OSTI)

This paper is concerned with the rejection of multiple narrowband disturbances in hard disk drives (HDDs). Inspired by a control blending idea, the multi-frequency disturbance rejection is formulated as a blending control problem. Each disturbance rejection ... Keywords: Blending control, H2 control, Hard disk drives, Servo control, Vibration rejection

Chunling Du; Lihua Xie; F. L. Lewis; Youyi Wang

2009-10-01T23:59:59.000Z

12

Enhanced Recovery Utilizing Variable Frequency Drives and a Distributed Power System  

Science Conference Proceedings (OSTI)

This report describes complete results of the project entitled ''Enhanced Recovery Utilizing Variable Frequency Drives and a Distributed Power System''. This demonstration project was initiated in July 2003 and completed in March 2005. The objective of the project was to develop an integrated power production/variable frequency drive system that could easily be deployed in the oil field that would increase production and decrease operating costs. This report describes all the activities occurred and documents results of the demonstration.

Randy Peden; Sanjiv Shah

2005-07-26T23:59:59.000Z

13

Improving the Efficiency of Die Casting Machine Hydraulic Systems with the Retrofit of Adjustable Frequency Drives  

E-Print Network (OSTI)

Die casting is a common method of light metal processing which is used to produce accurately dimensioned, sharply defined metal parts. Most die casting machines in use today utilize a complex hydraulic system to perform the necessary work required for the process. The pressure and flow rate demands on the hydraulic system vary significantly throughout the cycle. Many older systems are greatly oversized so that they are able to meet the peak hydraulic demand at any point. These systems operate inefficiently because there is typically no way to limit the hydraulic capacity during periods of low demand. As a result, fluid is throttled to lower pressures and excess fluid flow is routed directly back to the system reservoir, wasting motor energy and increasing the thermal load on the cooling system. One option for improving the efficiency of older die casting machines currently in use is the retrofit of an adjustable frequency drive, or AFD. An AFD allows the speed of the pump motor to be varied, changing the pump output to suit the cycle demands. This minimizes the amount of wasted energy without affecting other process parameters. This paper will discuss the die casting process and examine the energy savings potential of retrofitting die casting machines with adjustable frequency drives.

Ambs, L.; Kosanovic, D.; Edberg, C.

1999-05-01T23:59:59.000Z

14

CX-000613: Categorical Exclusion Determination | Department of...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Study; 2. Freezer Door Upgrades; 3. Install Dock Leveler Seals; 4. Install Evaporator Fan Variable Frequency Drives (VFDs); 5. Install Fast Acting Doors; 6. Install ER3...

15

Requirements for Defining Utility Drive Cycles: An Exploratory Analysis of Grid Frequency Regulation Data for Establishing Battery Performance Testing Standards  

DOE Green Energy (OSTI)

Battery testing procedures are important for understanding battery performance, including degradation over the life of the battery. Standards are important to provide clear rules and uniformity to an industry. The work described in this report addresses the need for standard battery testing procedures that reflect real-world applications of energy storage systems to provide regulation services to grid operators. This work was motivated by the need to develop Vehicle-to-Grid (V2G) testing procedures, or V2G drive cycles. Likewise, the stationary energy storage community is equally interested in standardized testing protocols that reflect real-world grid applications for providing regulation services. As the first of several steps toward standardizing battery testing cycles, this work focused on a statistical analysis of frequency regulation signals from the Pennsylvania-New Jersey-Maryland Interconnect with the goal to identify patterns in the regulation signal that would be representative of the entire signal as a typical regulation data set. Results from an extensive time-series analysis are discussed, and the results are explained from both the statistical and the battery-testing perspectives. The results then are interpreted in the context of defining a small set of V2G drive cycles for standardization, offering some recommendations for the next steps toward standardizing testing protocols.

Hafen, Ryan P.; Vishwanathan, Vilanyur V.; Subbarao, Krishnappa; Kintner-Meyer, Michael CW

2011-10-19T23:59:59.000Z

16

Motor VFDs | Open Energy Information  

Open Energy Info (EERE)

History View New Pages Recent Changes All Special Pages Semantic SearchQuerying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon...

17

Injection-locking of two frequency-doubled lasers with 3.2 GHz offset for driving Raman transitions with low photon scattering in $^{43}$Ca$^+$  

E-Print Network (OSTI)

We describe the injection locking of two infrared (794 nm) laser diodes which are each part of a frequency doubled laser system. An acousto-optic modulator (AOM) in the injection path gives an offset of 1.6 GHz between the lasers for driving Raman transitions between states in the hyperfine split (by 3.2 GHz) ground level of $^{43}$Ca$^+$. The offset can be disabled for use in $^{40}$Ca$^+$. We measure the relative linewidth of the frequency-doubled beams to be 42 mHz in an optical heterodyne measurement. The use of both injection locking and frequency doubling combines spectral purity with high optical power. Our scheme is applicable for providing Raman beams across other ion species and neutral atoms where coherent optical manipulation is required.

Linke, N M; Lucas, D M

2013-01-01T23:59:59.000Z

18

Technology Assessment and Application Guide for the Bonitron Single-Phase Power Supply for Three-Phase Variable Frequency Drives  

Science Conference Proceedings (OSTI)

The objective of this report is to describe and document the operation and performance of a Bonitron single-phase power supply that is designed to allow three-phase drive operation. This report will describe the different tests that were conducted to characterize the Bonitron power supply and their results. The tests that were conducted include voltage sag, interruption, recloser, and harmonic profiling. Additional characterization tests are also discussed.The voltage sag and ...

2013-10-17T23:59:59.000Z

19

Analysis of Energy-Efficiency Opportunities for the Cement Industry in Shandong Province, China  

E-Print Network (OSTI)

2007 e. Ningguo Cement Plant 9100KW Waste Heat Recovery andof the surveyed cement plants have waste heat recovery powerWaste Heat Recovery, and Variable Frequency Drives (VFDs) for Large Motors/Fans in 35 Cement Plants

Price, Lynn

2010-01-01T23:59:59.000Z

20

Piezoelectric drive circuit  

DOE Patents (OSTI)

A piezoelectric motor drive circuit is provided which utilizes the piezoelectric elements as oscillators and a Meacham half-bridge approach to develop feedback from the motor ground circuit to produce a signal to drive amplifiers to power the motor. The circuit automatically compensates for shifts in harmonic frequency of the piezoelectric elements due to pressure and temperature changes.

Treu, Jr., Charles A. (Raymore, MO)

1999-08-31T23:59:59.000Z

Note: This page contains sample records for the topic "frequency drives vfds" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Piezoelectric drive circuit  

DOE Patents (OSTI)

A piezoelectric motor drive circuit is provided which utilizes the piezoelectric elements as oscillators and a Meacham half-bridge approach to develop feedback from the motor ground circuit to produce a signal to drive amplifiers to power the motor. The circuit automatically compensates for shifts in harmonic frequency of the piezoelectric elements due to pressure and temperature changes. 7 figs.

Treu, C.A. Jr.

1999-08-31T23:59:59.000Z

22

Modeling of Proposed Changes to SIUC Central Heating, Air-Conditioning, and Power Plant Incorporating Variable Frequency Drive (VFD) and High Efficiency Turbine.  

E-Print Network (OSTI)

??Currently, the Southern Illinois University Carbondale (SIUC) power plant produces steam at high pressure to drive a high pressure (HP) turbine to make a portion… (more)

Su, Heyin

2011-01-01T23:59:59.000Z

23

Rockwell Automation - Owens Corning Teaming Profile  

NLE Websites -- All DOE Office Websites (Extended Search)

Rockwell Automation Owens Corning Rockwell Automation Owens Corning 1201 S. Second Street 247 York Road Milwaukee, WI 53204 Guelph, Ontario N1E 3G4 Business: Industrial Automation Business: Textile / Fiber Nigel Hitchings Frank Peel Marketing Manager Electrical Support Specialist Phone: 508-357-8404 Phone: 519-823-7208 Email: nehitchings@ra.rockwell.com Email: frank.peel@owenscorning.com Owens Corning partners with Rockwell Automation to retrofit fans with VFDs, saving $67,000 annually Project Scope Owens Corning and Rockwell Automation installed Variable Frequency Drives (VFDs) on one 125HP cooling fan and three 40HP recirculation fans at the Owens Corning Guelph Glass Plant. The VFDs were integrated with the existing Rockwell Automation programmable automation controller to collect

24

Holiday Food Drive  

NLE Websites -- All DOE Office Websites (Extended Search)

Food Drive Food Drive Holiday Food Drive During the recent holiday food drive, employees donated enough food to provide about 23,604 holiday meals for Northern New Mexico families. More than 432 frozen turkeys were donated this year by employees and other donors during 'Bring a Turkey to Work Day,' an annual Lab event that takes places Thanksgiving week. September 16, 2013 LANL employees organize food for the Holiday Food Drive. Contacts Giving Drives Ed Vigil Community Programs Office (505) 665-9205 Email Giving Drives Enrique Trujillo Community Programs Office (505) 665-6384 Email Helping feed Northern New Mexico families Community partners The Food Depot (Santa Fe) Del Norte Credit Union Smith's Food and Drug Giving Holiday Food Drive Holiday Gift Drive LANL Laces Los Alamos Employees' Scholarship Fund

25

AOCS USB Flash Drive  

Science Conference Proceedings (OSTI)

1 GB flash drive. AOCS logo printed on aluminum cover. AOCS USB Flash Drive Membership Merchandise Membership Merchandise 7F95621DF44FEA960BA8EE1D1E39CED4 1 GB USB flash drive. AOCS logo printed on aluminum cover. M-USB 17770

26

Drill drive mechanism  

DOE Patents (OSTI)

A drill drive mechanism is especially adapted to provide both rotational drive and axial feed for a drill of substantial diameter such as may be used for drilling holes for roof bolts in mine shafts. The drill shaft is made with a helical pattern of scroll-like projections on its surface for removal of cuttings. The drill drive mechanism includes a plurality of sprockets carrying two chains of drive links which are arranged to interlock around the drill shaft with each drive link having depressions which mate with the scroll-like projections. As the chain links move upwardly or downwardly the surfaces of the depressions in the links mate with the scroll projections to move the shaft axially. Tangs on the drive links mate with notch surfaces between scroll projections to provide a means for rotating the shaft. Projections on the drive links mate together at the center to hold the drive links tightly around the drill shaft. The entire chain drive mechanism is rotated around the drill shaft axis by means of a hydraulic motor and gear drive to cause rotation of the drill shaft. This gear drive also connects with a differential gearset which is interconnected with a second gear. A second motor is connected to the spider shaft of the differential gearset to produce differential movement (speeds) at the output gears of the differential gearset. This differential in speed is utilized to drive said second gear at a speed different from the speed of said gear drive, this speed differential being utilized to drive said sprockets for axial movement of said drill shaft.

Dressel, Michael O. (Englewood, CO)

1979-01-01T23:59:59.000Z

27

Holiday Gift Drive  

NLE Websites -- All DOE Office Websites (Extended Search)

Holiday Gift Drive Holiday Gift Drive Holiday Gift Drive Every year, Laboratory employees help fulfill the holiday wishes of children and seniors in our communities. In 2012, our employees helped more than 1,030 Northern New Mexico children, senior citizens and families have a brighter holiday season. September 16, 2013 Every holiday season, employees of Los Alamos National Laboratory donate and distribute gifts to families in need throughout Northern New Mexico. Contacts Giving Drives Ed Vigil Community Programs Office (505) 665-9205 Email Giving Drives Enrique Trujillo Community Programs Office (505) 665-6384 Email Helping New Mexico families feel the holiday spirit The 2013 campaign runs from November 21-December 18. 2012 Holiday Gift Drive partners Boys and Girls Club Del Norte (Abiquiu Site)

28

Adjustable Speed Drive Industrial Applications  

E-Print Network (OSTI)

Electric motors are significant users of electricity in the United States. Approximately 66 percent of the total electricity in the U.S. is used by electric motors. Electronic adjustable speed drives (ASDs) can save energy, lower maintenance cost and improve product quality. By providing a variable frequency output to ac motors the speed of the motors can be controlled and matched to the process requirements. The benefits that may be derived from using ASDs are described and the type of ASDs, applications and specific case studies of ASD installations are also discussed.

Poole, J. N.

1989-09-01T23:59:59.000Z

29

Traction Drive Systems Breakout  

NLE Websites -- All DOE Office Websites (Extended Search)

Traction Drive Systems Breakout Traction Drive Systems Breakout John M. Miller, PhD, PE, F.IEEE, F.SAE Oak Ridge National Laboratory Facilitator July 24, 2012 EV Everywhere Grand Challenge Vehicle Technologies Program - Advanced Power Electronics and Electric Motors eere.energy.gov EV Everywhere Traction Drive System * DOE goals for Electric Traction Drive System (TDS) innovations must be disruptive innovation focused to meet the CY2022 price target ($20,000 $25,000) for a mid-sized 5 passenger sedan having 5 year simple payback. Enhanced Efficiency Reduced Cost Traction Drive System EETT Roadmap: "Therefore, research is needed to develop technologies that are less expensive and, at the same time, smaller, lighter, more efficient, and equally reliable as conventional automotive technologies. "

30

Multilevel converters for large electric drives  

SciTech Connect

Traditional two-level high frequency pulse width modulation (PWM) inverters for motor drives have several problems associated with their high frequency switching which produces common-mode voltage and high voltage change (dV/dt) rates to the motor windings. Multilevel inverters solve these problems because their devices can switch at a much lower frequency. Two different multilevel topologies are identified for use as a converter for electric drives, a cascade inverter with separate dc sources and a back-to-back diode clamped converter. The cascade inverter is a natural fit for large automotive all electric drives because of the high VA ratings possible and because it uses several levels of dc voltage sources which would be available from batteries or fuel cells. The back to back diode damped converter is ideal where a source of ac voltage is available such as a hybrid electric vehicle. Simulation and experimental results show the superiority of these two converters over PWM based drives.

Tolbert, L.M.; Peng, F.Z.

1997-11-01T23:59:59.000Z

31

Intrusions: What Drives Them?  

Science Conference Proceedings (OSTI)

The driving mechanism for the observed interleaving of water masses is generally assumed to be double-diffusive mixing. However, some observations of intrusions have been made in regions where the mean stratification is stable to double-diffusive ...

Dave Hebert

1999-06-01T23:59:59.000Z

32

Control rod drive  

DOE Patents (OSTI)

A control rod drive uses gravitational forces to insert one or more control rods upwardly into a reactor core from beneath the reactor core under emergency conditions. The preferred control rod drive includes a vertically movable weight and a mechanism operatively associating the weight with the control rod so that downward movement of the weight is translated into upward movement of the control rod. The preferred control rod drive further includes an electric motor for driving the control rods under normal conditions, an electrically actuated clutch which automatically disengages the motor during a power failure and a decelerator for bringing the control rod to a controlled stop when it is inserted under emergency conditions into a reactor core.

Hawke, Basil C. (Solana Beach, CA)

1986-01-01T23:59:59.000Z

33

CONTROL ROD DRIVE  

DOE Patents (OSTI)

BS>A drive mechanism was invented for the control rod of a nuclear reactor. Power is provided by an electric motor and an outside source of fluid pressure is utilized in conjunction with the fluid pressure within the reactor to balance the loadings on the motor. The force exerted on the drive mechanism in the direction of scramming the rod is derived from the reactor fluid pressure so that failure of the outside pressure source will cause prompt scramming of the rod.

Chapellier, R.A.

1960-05-24T23:59:59.000Z

34

School supply drive winding down  

NLE Websites -- All DOE Office Websites (Extended Search)

submit School supply drive winding down The drive is collecting materials for schools throughout Northern New Mexico and will be distributed by the Lab and Self Help, Inc....

35

Electric Drive Status and Challenges  

NLE Websites -- All DOE Office Websites (Extended Search)

to Achieve Traction Drive Cost Target * Inverter: cold plate, drive boards, thermal interface material, bus bar, current sensors, housing, control board, etc. Motor:...

36

Current Drive in Recombining Plasma  

SciTech Connect

The Langevin equations describing the average collisional dynamics of suprathermal particles in nonstationary plasma remarkably admit an exact analytical solution in the case of recombining plasma. The current density produced by arbitrary particle fluxes is derived including the effect of charge recombination. Since recombination has the effect of lowering the charge density of the plasma, thus reducing the charged particle collisional frequencies, the evolution of the current density can be modified substantially compared to plasma with fixed charge density. The current drive efficiency is derived and optimized for discrete and continuous pulses of current, leading to the discovery of a nonzero "residual" current density that persists indefinitely under certain conditions, a feature not present in stationary plasmas.

P.F. Schmit and N.J. Fisch

2012-05-15T23:59:59.000Z

37

Current drive in recombining plasma  

SciTech Connect

The Langevin equations describing the average collisional dynamics of suprathermal particles in nonstationary plasma remarkably admit an exact analytical solution in the case of recombining plasma. The current density produced by arbitrary particle fluxes is derived including the influence of charge recombination. Since recombination has the effect of lowering the charge density of the plasma, thus reducing the charged particle collisional frequencies, the evolution of the current density can be modified substantially compared to plasma with fixed charge density. The current drive efficiency is derived and optimized for discrete and continuous pulses of current, leading to the discovery of a nonzero ''residual'' current density that persists indefinitely under certain conditions, a feature not present in stationary plasmas.

Schmit, P. F.; Fisch, N. J. [Department of Astrophysical Sciences, Princeton University, Princeton, New Jersey 08544 (United States)

2011-10-15T23:59:59.000Z

38

Ceramic vane drive joint  

SciTech Connect

A variable geometry gas turbine has an array of ceramic composition vanes positioned by an actuating ring coupled through a plurality of circumferentially spaced turbine vane levers to the outer end of a metallic vane drive shaft at each of the ceramic vanes. Each of the ceramic vanes has an end slot of bow tie configuration including flared end segments and a center slot therebetween. Each of the vane drive shafts has a cross head with ends thereof spaced with respect to the sides of the end slot to define clearance for free expansion of the cross head with respect to the vane and the cross head being configured to uniformly distribute drive loads across bearing surfaces of the vane slot.

Smale, Charles H. (Indianapolis, IN)

1981-01-01T23:59:59.000Z

39

Drive5 | Open Energy Information  

Open Energy Info (EERE)

Drive5 Drive5 Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Drive5 Agency/Company /Organization: Drive5 Sector: Energy Focus Area: Vehicles Resource Type: Software/modeling tools User Interface: Website, Mobile Device Website: www.drive5.us Web Application Link: www.drive5.us Cost: Free OpenEI Keyword(s): Challenge Generated Drive5 Screenshot References: Drive5[1] Challenge.gov[2] Challenge.gov Submission Page[3] Measure your fuel economy real time with five metrics to save on fuel costs. Overview Drive1: Fuel Economy Drive5 gives you real time fuel economy feedback for any car 1984 and newer by simply utilizing the sensors embedded in your phone or tablet. It uses a statistical algorithm which leverages the fueleconomy.gov's open dataset along with data from thousands of automobile trips. No connections to the

40

Current drive, anticurrent drive, and balanced injection  

SciTech Connect

In lower hybrid (LH) discharges, the number of suprathermal electrons is limited by the upper bound on the current density from the q = 1 condition, which is caused by the onset of the m = 1 MHD instability. The stored energy of suprathermal electrons, measured in terms of a poloidal beta, scales with plasma current as I/sub p//sup -1/. Potentially, these bounds represent very restrictive conditions for heating in larger machines. Consequently, it seems necessary to perform experiments where the electrons are driven in both directions, parallel and antiparallel to the magnetic field, i.e., bidirectional scenarios like anticurrent drive or balanced injection. Data from PLT relevant to these ideas are discussed. 6 refs., 4 figs.

von Goeler, S.; Stevens, J.; Beiersdorfer, P.; Bell, R.; Bernabei, S.; Bitter, M.; Cavallo, A.; Chu, T.K.; Fishman, H.; Hill, K.

1987-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "frequency drives vfds" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

LCLS Injector Drive Laser  

SciTech Connect

Requirements for the LCLS injector drive laser present significant challenges to the design of the system. While progress has been demonstrated in spatial shape, temporal shape, UV generation and rep-rate, a laser that meets all of the LCLS specifications simultaneously has yet to be demonstrated. These challenges are compounded by the stability and reliability requirements. The drive laser and transport system has been installed and tested. We will report on the current operational state of the laser and plans for future improvements.

Dowell, D.H.; Castro, J.; Emma, P.; Frisch, J.; Gilevich, A.; Hays, G.; Hering, P.; Limborg-Deprey, C.; Loos, H.; Miahnahri, A.; White, W.; /SLAC

2007-11-02T23:59:59.000Z

42

CONTROL ROD DRIVE  

DOE Patents (OSTI)

Accurate and controlled drive for the control rod is from an electric motor. A hydraulic arrangement is provided to balance a piston against which a control rod is urged by the application of fluid pressure. The electric motor drive of the control rod for normal operation is made through the aforementioned piston. In the event scramming is required, the fluid pressure urging the control rod against the piston is relieved and an opposite fluid pressure is applied. The lack of mechanical connection between the electric motor and control rod facilitates the scramming operation.

Chapellier, R.A.; Rogers, I.

1961-06-27T23:59:59.000Z

43

Chinese demand drives global deforestation Chinese demand drives global deforestation  

E-Print Network (OSTI)

Chinese demand drives global deforestation Chinese demand drives global deforestation By Tansa Musa zones and do not respect size limits in their quest for maximum financial returns. "I lack words economy. China's demand for hardwood drives illegal logging says "Both illegal and authorized

44

Multi-Stage Converters: A New Technology for Traction Drive Juan W. Dixon  

E-Print Network (OSTI)

of this drive is that the switching frequency of the Main converter is at the fundamental frequency, reducing will be the Slaves. The Main Converter works at the lower switching frequency (fundamental frequency), which, and A. Tahri, "Multilevel Converters and VAR Compensation", Chapter 25, Power Electronics Handbook

Rudnick, Hugh

45

Gas Mileage Tips - Driving More Efficiently  

NLE Websites -- All DOE Office Websites (Extended Search)

Driving More Efficiently Drive Sensibly frustrated driver Aggressive driving (speeding, rapid acceleration and braking) wastes gas. It can lower your gas mileage by 33 percent at...

46

Enhancing cavity cooling with cavity driving  

E-Print Network (OSTI)

Cavity-mediated cooling has the potential to become one of the most efficient techniques to cool molecular species down to very low temperatures. However, theoretical schemes with single-laser driving require relatively strong trapping potentials and relatively long cavity photon life times which are hard to realise experimentally. In this paper we therefore consider an alternative cavity cooling scenario with double-laser driving. It is shown that the second laser can enhance the phonon-photon coherence which governs the time evolution of the mean phonon number, thereby resulting in higher cooling rates and a lower final temperature, when the cavity decay rate kappa is four or more times larger than the phonon frequency nu of the trapped particle.

Blake, Tony; Beige, Almut

2010-01-01T23:59:59.000Z

47

NREL: Vehicles and Fuels Research - DRIVE: Drive-Cycle Rapid...  

NLE Websites -- All DOE Office Websites (Extended Search)

representative drive cycles from raw data, the tool is capable of comparing vehicle operation to industry standard test cycles and can even select a representative...

48

Tunable single-photon frequency conversion in a Sagnac interferometer  

E-Print Network (OSTI)

We study the single-photon frequency conversion of a five-level emitter coupled to a Sagnac interferometer. We show that the unity conversion efficiency can be achieved either in resonance or off-resonance case under the ideal condition. In particular, the frequency of the output photon can be controlled by the frequencies and Rabi frequencies of the external driving fields.

Wei-Bin Yan; Jin-Feng Huang; Heng Fan

2013-08-01T23:59:59.000Z

49

Rotary drive mechanism  

Science Conference Proceedings (OSTI)

This patent describes a rotary drive mechanism which includes a rotary solenoid having a stator and multi-poled rotor. A moving member rotates with the rotor and is biased by a biasing device. The biasing device causes a further rotational movement after rotation by the rotary solenoid. Thus, energization of the rotary solenoid moves the member in one direction to one position and biases the biasing device against the member. Subsequently, de- energization of the rotary solenoid causes the biasing device to move the member in the same direction to another position from where the moving member is again movable by energization and de-energization of the rotary solenoid. Preferably, the moving member is a multi-lobed cam having the same number of lobes as the rotor has poles. An anti- overdrive device is also preferably provided for preventing overdrive in the forward direction or a reverse rotation of the moving member and for precisely aligning the moving member.

Kenderdine, E.W.

1991-10-08T23:59:59.000Z

50

Rotary drive mechanism  

Science Conference Proceedings (OSTI)

A rotary drive mechanism includes a rotary solenoid having a stator and multi-poled rotor. A moving member rotates with the rotor and is biased by a biasing device. The biasing device causes a further rotational movement after rotation by the rotary solenoid. Thus, energization of the rotary solenoid moves the member in one direction to one position and biases the biasing device against the member. Subsequently, de-energization of the rotary solenoid causes the biasing device to move the member in the same direction to another position from where the moving member is again movable by energization and de-energization of the rotary solenoid. Preferably, the moving member is a multi-lobed cam having the same number of lobes as the rotor has poles. An anti-overdrive device is also preferably provided for preventing overdrive in the forward direction or a reverse rotation of the moving member and for precisely aligning the moving member.

Kenderdine, Eugene W. (Albuquerque, NM)

1991-01-01T23:59:59.000Z

51

QUICK RELEASABLE DRIVE  

DOE Patents (OSTI)

A quick releasable mechanical drive system suitable for use in a nuclear reactor is described. A small reversible motor positions a control rod by means of a worm and gear speed reducer, a magnetic torque clutch, and a bell crank. As the control rod is raised to the operating position, a heavy coil spring is compressed. In the event of an emergency indicated by either a''scram'' signal or a power failure, the current to the magnetic clutch is cut off, thereby freeing the coil spring and the bell crank positioner from the motor and speed reduction gearing. The coil spring will immediately act upon the bell crank to cause the insertion of the control rod. This arrangement will allow the slow, accurate positioning of the control rod during reactor operation, while providing an independent force to rapidly insert the rod in the event of an emergency.

Dickson, J.J.

1958-07-01T23:59:59.000Z

52

Hydrogen--electric power drives  

SciTech Connect

Hydrogen--electric power drives would consist of most or all of these: chilled hydrogen gas tank, liquid oxygen tank, a bank of fuel cells, dc/ac inverter, ac drive motors, solid state ac speed control, dc sputter-ion vacuum pumps, steam turbine generator set and steam condenser. Each component is described. Optional uses of low pressure extraction steam and warm condensate are listed. Power drive applications are listed. Impact on public utilities, fuel suppliers, and users is discussed.

Hall, F.F.

1978-10-01T23:59:59.000Z

53

Cooling Tower Energy Conservation Through Hydraulic Fan Drives  

E-Print Network (OSTI)

Many companies offer gearboxes, shafts, and couplings for cooling tower fan drives, with little or no innovation. These companies have traditionally been purchased with an emphasis on cost and not "Return on Investment!" In the past, when energy conservation or "Return on Investment" was emphasized, the only alternative was to add an expensive frequency inverter for variable speed control. This meant expensive rewiring, placing additional controls in an already crowded control room, or constructing a special building for them. However, with H.E.M.'s patented Hydraulic Fan Drive, one receives variable speed control and more efficiency for approximately the price of a mechanical drive. The new, more efficient Hydraulic Drive allows for a variable speed control and the ability to sense water temperature to control fan speed.

Dickerson, J.

1991-06-01T23:59:59.000Z

54

Modern automatic system for the optimization of the electrical drives for working machines with mechanical branches  

Science Conference Proceedings (OSTI)

After a consequent adjustable electric drives experience, once with establish of the analysis desiderata's, during of prepares and experimentations time, there are selected some few problems who underlie this work definition. This paper brings some contributions ... Keywords: electric drive system, flux bearing, frequency converter, speed adjustment of a high power asynchronous motor, system for adjustment speed to asynchronous motor

Mihail-Florin Stan; Marcel Ionel; Octavian-Marcel Ionel

2006-10-01T23:59:59.000Z

55

Fast wave current drive system design for DIII-D  

SciTech Connect

DIII-D has a major effort underway to develop the physics and technology of fast wave electron heating and current drive in conjunction with electron cyclotron heating. The present system consists of a four strap antenna driven by one 2 MW transmitter in the 32--60 MHz band. Experiments have been successful in demonstrating the physics of heating and current drive. In order to validate fast wave current drive for future machines a greater power capability is necessary to drive all of the plasma current. Advanced tokamak modeling for DIII-D has indicated that this goal can be met for plasma configurations of interest (i.e. high [beta] VH-mode discharges) with 8 MW of transmitter fast wave capability. It is proposed that four transmitters drive fast wave antennas at three locations in DIII-D to provide the power for current drive and current profile modification. As the next step in acquiring this capability, two modular four strap antennas are in design and the procurement of a high power transmitter in the 30--120 MHz range is in progress. Additionally, innovations in the technology are being investigated, such as the use of a coupled combine antenna to reduce the number of required feedthroughs and to provide for parallel phase velocity variation with a relatively small change in frequency, and the use of fast ferrite tuners to provide millisecond timescale impedance matching. A successful test of a low power fast ferrite prototype was conducted on DIII-D.

deGrassie, J.S.; Callis, R.; Lin-Liu, Y.R.; Moeller, C..; Petty, C.C.; Phelps, D.R.; Pinsker, R.I.; Remsen, D. (General Atomics, San Diego, CA (United States)); Baity, F.W.; Hoffman, D.J.; Taylor, D.J. (Oak Ridge National Lab., TN (United States)); Arnold, W.; Martin, S. (ANT-Nachrichtentechnik GmbH, Backnang (Germany))

1992-09-01T23:59:59.000Z

56

Fast wave current drive system design for DIII-D  

SciTech Connect

DIII-D has a major effort underway to develop the physics and technology of fast wave electron heating and current drive in conjunction with electron cyclotron heating. The present system consists of a four strap antenna driven by one 2 MW transmitter in the 32--60 MHz band. Experiments have been successful in demonstrating the physics of heating and current drive. In order to validate fast wave current drive for future machines a greater power capability is necessary to drive all of the plasma current. Advanced tokamak modeling for DIII-D has indicated that this goal can be met for plasma configurations of interest (i.e. high {beta} VH-mode discharges) with 8 MW of transmitter fast wave capability. It is proposed that four transmitters drive fast wave antennas at three locations in DIII-D to provide the power for current drive and current profile modification. As the next step in acquiring this capability, two modular four strap antennas are in design and the procurement of a high power transmitter in the 30--120 MHz range is in progress. Additionally, innovations in the technology are being investigated, such as the use of a coupled combine antenna to reduce the number of required feedthroughs and to provide for parallel phase velocity variation with a relatively small change in frequency, and the use of fast ferrite tuners to provide millisecond timescale impedance matching. A successful test of a low power fast ferrite prototype was conducted on DIII-D.

deGrassie, J.S.; Callis, R.; Lin-Liu, Y.R.; Moeller, C..; Petty, C.C.; Phelps, D.R.; Pinsker, R.I.; Remsen, D. [General Atomics, San Diego, CA (United States); Baity, F.W.; Hoffman, D.J.; Taylor, D.J. [Oak Ridge National Lab., TN (United States); Arnold, W.; Martin, S. [ANT-Nachrichtentechnik GmbH, Backnang (Germany)

1992-09-01T23:59:59.000Z

57

ARM - SGP Rural Driving Hazards  

NLE Websites -- All DOE Office Websites (Extended Search)

Rural Driving Hazards Rural Driving Hazards SGP Related Links Facilities and Instruments Central Facility Boundary Facility Extended Facility Intermediate Facility Radiometric Calibration Facility Geographic Information ES&H Guidance Statement Operations Science Field Campaigns Visiting the Site Fact Sheet Images Information for Guest Scientists Contacts SGP Rural Driving Hazards The rural location of the Southern Great Plains (SGP) site facilities requires that visitors travel on unpaved, dirt and gravel, roads. Visitors should be aware of the driving hazards this presents by taking the following precautions: Proceed cautiously: Many rural roads have unmarked and blind intersections. Slow down: Sanded and gravel raods can cause a vehicle to swerve. Maintain a safe following distance: During the dry season, vehicles

58

Upgrading coal plant damper drives  

Science Conference Proceedings (OSTI)

The replacement of damper drives on two coal-fired units at the James H. Miller Jr. electric generating plant by Intelligent Contrac electric rotary actuators is discussed. 2 figs.

Hood, N.R.; Simmons, K. [Alamaba Power (United States)

2009-11-15T23:59:59.000Z

59

Direct drive field actuator motors  

DOE Patents (OSTI)

A positive-drive field actuator motor is described which includes a stator carrying at least one field actuator which changes in dimension responsive to application of an energy field, and at least one drive shoe movable by the dimensional changes of the field actuator to contact and move a rotor element with respect to the stator. Various embodiments of the motor are disclosed, and the rotor element may be moved linearly or arcuately. 62 figs.

Grahn, A.R.

1998-03-10T23:59:59.000Z

60

Mechanical drive for blood pump  

DOE Patents (OSTI)

This patent relates to a highly efficient blood pump to be used as a replacement for a ventricle of the human heart to restore people disabled by heart disease. The mechanical drive of the present invention is designed to operate in conjunction with a thermoelectric converter power source. The mechanical drive system essentially converts the output of a rotary power into pulsatile motion so that the power demand from the thermoelectric converter remains essentially constant while the blood pump output is pulsed. (auth)

Bifano, N.J.; Pouchot, W.D.

1975-07-29T23:59:59.000Z

Note: This page contains sample records for the topic "frequency drives vfds" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Low backlash direct drive actuator  

DOE Patents (OSTI)

A low backlash direct drive actuator is described which comprises a motor such as a stepper motor having at least 200 steps per revolution; a two part hub assembly comprising a drive hub coaxially attached to the shaft of the motor and having a plurality of drive pins; a driven hub having a plurality of bores in one end thereof in alignment with the drive pins in the drive hub and a threaded shaft coaxially mounted in an opposite end of the driven hub; and a housing having a central bore therein into which are fitted the drive hub and driven hub, the housing having a motor mount on one end thereof to which is mounted the stepper motor, and a closed end portion with a threaded opening therein coaxial with the central bore in the housing and receiving therein the threaded shaft attached to the driven hub. Limit switches mounted to the housing cooperate with an enlarged lip on the driven hub to limit the lateral travel of the driven hub in the housing, which also acts to limit the lateral travel of the threaded shaft which functions as a lead screw.

Kuklo, Thomas C. (Oakland, CA)

1994-01-01T23:59:59.000Z

62

Cone Drive Operations Inc | Open Energy Information  

Open Energy Info (EERE)

worm gear technology. The company supplies azimuth and elevation drives for solar tracking applications. References Cone Drive Operations Inc1 LinkedIn Connections CrunchBase...

63

Electric vehicle drive train with contactor protection ...  

A drive train for an electric vehicle includes a traction battery, a power drive circuit, a main contactor for connecting and disconnecting the ...

64

Driving Green com | Open Energy Information  

Open Energy Info (EERE)

| Sign Up Search Page Edit with form History Facebook icon Twitter icon Driving Green com Jump to: navigation, search Name Driving Green.com Place Melbourne, Florida Zip...

65

Gene Frequency  

NLE Websites -- All DOE Office Websites (Extended Search)

Gene Frequency Gene Frequency Name: donna Location: N/A Country: N/A Date: N/A Question: If six fingers is a dominant human trait why do we have only five? Replies: This is simple. There are just not many genes in the human population for six fingers. Steve Sample Look in any high school biology book for what is known as Hardy-Weinberg equilibrium. These two scientists (separately) said that gene frequencies do not change much unless something in the environment selects them over other genes. In other words, unless 6 fingers somehow becomes an advantage, and five-fingered people have less of an advantage, the frequency of six fingered people in the population will not necessarily increase. This is the same reason that recessive traits don't disappear from the population. Also, six fingers is not considered attractive and they may not get as many mates. Also, more people are born with six fingers than you might imagine but just have them amputated shortly after birth.

66

Distribution Drive | Open Energy Information  

Open Energy Info (EERE)

Drive Drive Jump to: navigation, search Name Distribution Drive Place Dallas, Texas Zip 75205 Product Biodiesel fuel distributor. Coordinates 32.778155°, -96.795404° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":32.778155,"lon":-96.795404,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

67

Drive reconfiguration mechanism for tracked robotic vehicle  

SciTech Connect

Drive reconfiguration apparatus for changing the configuration of a drive unit with respect to a vehicle body may comprise a guide system associated with the vehicle body and the drive unit which allows the drive unit to rotate about a center of rotation that is located at about a point where the drive unit contacts the surface being traversed. An actuator mounted to the vehicle body and connected to the drive unit rotates the drive unit about the center of rotation between a first position and a second position.

Willis, W. David (Idaho Falls, ID)

2000-01-01T23:59:59.000Z

68

Hydromechanical transmission with hydrodynamic drive  

DOE Patents (OSTI)

This transmission has a first planetary gear assembly having first input means connected to an input shaft, first output means, and first reaction means, and a second planetary gear assembly having second input means connected to the first input means, second output means, and second reaction means connected directly to the first reaction means by a reaction shaft. First clutch means, when engaged, connect the first output means to an output shaft in a high driving range. A hydrodynamic drive is used; for example, a torque converter, which may or may not have a stationary case, has a pump connected to the second output means, a stator grounded by an overrunning clutch to the case, and a turbine connected to an output member, and may be used in a starting phase. Alternatively, a fluid coupling or other type of hydrodynamic drive may be used. Second clutch means, when engaged, for connecting the output member to the output shaft in a low driving range. A variable-displacement hydraulic unit is mechanically connected to the input shaft, and a fixed-displacement hydraulic unit is mechanically connected to the reaction shaft. The hydraulic units are hydraulically connected together so that when one operates as a pump the other acts as a motor, and vice versa. Both clutch means are connected to the output shaft through a forward-reverse shift arrangement. It is possible to lock out the torque converter after the starting phase is over.

Orshansky, Jr., deceased, Elias (LATE OF San Francisco, CA); Weseloh, William E. (San Diego, CA)

1979-01-01T23:59:59.000Z

69

Water drives peptide conformational transitions  

E-Print Network (OSTI)

Transitions between metastable conformations of a dipeptide are investigated using classical molecular dynamics simulation with explicit water molecules. The distribution of the surrounding water at different moments before the transitions and the dynamical correlations of water with the peptide's configurational motions indicate that water is the main driving force of the conformational changes.

Nerukh, Dmitry

2011-01-01T23:59:59.000Z

70

Anomalous-viscosity current drive  

DOE Patents (OSTI)

The present invention relates to a method and apparatus for maintaining a steady-state current for magnetically confining the plasma in a toroidal magnetic confinement device using anomalous viscosity current drive. A second aspect of this invention relates to an apparatus and method for the start-up of a magnetically confined toroidal plasma.

Stix, T.H.; Ono, M.

1986-04-25T23:59:59.000Z

71

US DRIVE Driving Research and Innovation for Vehicle Efficiency and Energy Sustainability Partnership Plan  

NLE Websites -- All DOE Office Websites (Extended Search)

Partnership Plan Partnership Plan March 2013 U.S. DRIVE Partnership Plan Table of Contents Foreword ....................................................................................................................................................... 2 Definition ...................................................................................................................................................... 3 Partners ......................................................................................................................................................... 3 U.S. DRIVE Vision ........................................................................................................................................... 3 U.S. DRIVE Mission ........................................................................................................................................ 4

72

Magnetically Coupled Adjustable Speed Drive Systems  

DOE Green Energy (OSTI)

Adjustable speed drive (ASD) technologies have the ability to precisely control motor sytems output and produce a numbr of benefits including energy and demand savings. This report examines the performance and cost effectiveness of a specific class of ASDs called magnetically-coupled adjustable speed drives (MC-ASD) which use the strength of a magnetic field to control the amount of torque transferred between motor and drive shaft. The MagnaDrive Adjustable Speed Coupling System uses fixed rare-earth magnets and varies the distance between rotating plates in the assembly. the PAYBACK Variable Speed Drive uses an electromagnet to control the speed of the drive

Chvala, William D.; Winiarski, David W.

2002-08-18T23:59:59.000Z

73

HybriDrive Propulsion System  

NLE Websites -- All DOE Office Websites (Extended Search)

HybriDrive HybriDrive ® Propulsion System Cleaner, smarter power for transit DOE/FTA Fuel Cell Research Priorities Workshop Washington, DC 7 June 2010 Bart W. Mancini Sr. Principal Systems Engineer BAE Systems Ph: 607-770-4103 bart.mancini@baesystems.com 2 Overview 3 * BAE Systems FC Experience / Deployments * Technology gaps/barriers to full commercialization of fuel cell buses * Well-to-wheels energy efficiency and emissions * Cost metrics * Bus integration issues * Fuel cell bus R&D needs * Future plans BAE Systems FC Experience / Deployments 4 * 1998 - Georgetown/FTA/DOE Fuel Cell Bus #1 (still serviceable) * UTC 100 kW Phosphoric Acid FC using on-board Methanol Reformate, Hybrid propulsion & Electric accessories * 2000 - Georgetown/FTA/DOE Fuel Cell Bus #2 (retired) *

74

Granular gases under extreme driving  

E-Print Network (OSTI)

We study inelastic gases in two dimensions using event-driven molecular dynamics simulations. Our focus is the nature of the stationary state attained by rare injection of large amounts of energy to balance the dissipation due to collisions. We find that under such extreme driving, with the injection rate much smaller than the collision rate, the velocity distribution has a power-law high energy tail. The numerically measured exponent characterizing this tail is in excellent agreement with predictions of kinetic theory over a wide range of system parameters. We conclude that driving by rare but powerful energy injection leads to a well-mixed gas and constitutes an alternative mechanism for agitating granular matter. In this distinct nonequilibrium steady-state, energy cascades from large to small scales. Our simulations also show that when the injection rate is comparable with the collision rate, the velocity distribution has a stretched exponential tail.

W. Kang; J. Machta; E. Ben-Naim

2010-02-04T23:59:59.000Z

75

High frequency inductive lamp and power oscillator  

DOE Patents (OSTI)

A high frequency inductively coupled electrodeless lamp includes an excitation coil with an effective electrical length which is less than one half wavelength of a driving frequency applied thereto, preferably much less. The driving frequency may be greater than 100 MHz and is preferably as high as 915 MHz. Preferably, the excitation coil is configured as a non-helical, semi-cylindrical conductive surface having less than one turn, in the general shape of a wedding ring. At high frequencies, the current in the coil forms two loops which are spaced apart and parallel to each other. Configured appropriately, the coil approximates a Helmholtz configuration. The lamp preferably utilizes an bulb encased in a reflective ceramic cup with a pre-formed aperture defined therethrough. The ceramic cup may include structural features to aid in alignment and I or a flanged face to aid in thermal management. The lamp head is preferably an integrated lamp head comprising a metal matrix composite surrounding an insulating ceramic with the excitation integrally formed on the ceramic. A novel solid-state oscillator preferably provides RF power to the lamp. The oscillator is a single active element device capable of providing over 70 watts of power at over 70% efficiency. Various control circuits may be employed to adjust the driving frequency of the oscillator.

MacLennan, Donald A. (Gaithersburg, MD); Dymond, Jr., Lauren E. (North Potomac, MD); Gitsevich, Aleksandr (Montgomery Village, MD); Grimm, William G. (Silver Spring, MD); Kipling, Kent (Gaithersburg, MD); Kirkpatrick, Douglas A. (Great Falls, VA); Ola, Samuel A. (Silver Spring, MD); Simpson, James E. (Gaithersburg, MD); Trimble, William C. (Columbia, MD); Tsai, Peter (Olney, MD); Turner, Brian P. (Damascus, MD)

2001-01-01T23:59:59.000Z

76

High frequency inductive lamp and power oscillator  

DOE Patents (OSTI)

A high frequency inductively coupled electrodeless lamp includes an excitation coil with an effective electrical length which is less than one half wavelength of a driving frequency applied thereto, preferably much less. The driving frequency may be greater than 100 MHz and is preferably as high as 915 MHz. Preferably, the excitation coil is configured as a non-helical, semi-cylindrical conductive surface having less than one turn, in the general shape of a wedding ring. At high frequencies, the current in the coil forms two loops which are spaced apart and parallel to each other. Configured appropriately, the coil approximates a Helmholtz configuration. The lamp preferably utilizes an bulb encased in a reflective ceramic cup with a pre-formed aperture defined therethrough. The ceramic cup may include structural features to aid in alignment and/or a flanged face to aid in thermal management. The lamp head is preferably an integrated lamp head comprising a metal matrix composite surrounding an insulating ceramic with the excitation integrally formed on the ceramic. A novel solid-state oscillator preferably provides RF power to the lamp. The oscillator is a single active element device capable of providing over 70 watts of power at over 70% efficiency. Various control circuits may be employed to match the driving frequency of the oscillator to a plurality of tuning states of the lamp.

MacLennan, Donald A. (Gaithersburg, MD); Turner, Brian P. (Damascus, MD); Dolan, James T. (Frederick, MD); Kirkpatrick, Douglas A. (Great Falls, VA); Leng, Yongzhang (Damascus, MD)

2000-01-01T23:59:59.000Z

77

BNL Blood Drives: Iron-rich foods  

NLE Websites -- All DOE Office Websites (Extended Search)

BNL Blood Drives: Iron-Rich Foods Blood Drive Home Seafood: Fish (cod, sardines, tuna, clams, oysters, shrimp) Poultry: Chicken, eggs, yolk Lean Red Meats: Beef, lamb, veal, pork,...

78

Supply Fan Control for Constant Air Volume Air Handling Units  

E-Print Network (OSTI)

Since terminal boxes do not have a modulation damper in constant volume (CV) air handling unit (AHU) systems, zone reheat coils have to be modulated to maintain the space temperature with constant supply airflow. This conventional control sequence causes a significant amount of reheat and constant fan power under partial load conditions. Variable Frequency Drives (VFDs) can be installed on these constant air volume systems. The fan speed can be modulated based on the maximum zone load. This paper present the procedure to control the supply fan speed and analyzes the thermal performance and major fan energy and thermal energy savings without expensive VAV retrofit through the actual system operation.

Cho, Y.; Wang, G.; Liu, M.

2007-01-01T23:59:59.000Z

79

Measured Savings of DC to AC Drive Retrofit in Plastic Extrusion  

E-Print Network (OSTI)

This paper presents the potential electrical energy efficiency improvements for utilizing alternating current (AC) motors controlled by variable frequency drives (VFD) in place of direct current (DC) motors to drive plastic extrusion machines. A brief background on the extrusion process is presented along with typical extrusion machine electrical drive performance requirements. Motor performance characteristics and control strategies are described for both AC and DC machines. A case study is presented, where detailed electrical measurements were performed on two similar extrusion machines driven by a DC motor and an AC motor respectively. Electrical energy, demand, and cost savings are analyzed

Sfeir, R. A.

2008-01-01T23:59:59.000Z

80

A Drive Laser for Multi-Bunch Photoinjector Operation  

Science Conference Proceedings (OSTI)

Numerous electron beam applications would benefit from increased average current without sacrificing beam brightness. Work is underway at LLNL to investigate the performance of X-band photoinjectors that would generate electron bunches at a rate matching the RF drive frequency, i.e. one bunch per RF cycle. A critical part of this effort involves development of photo-cathode drive laser technology. Here we present a new laser architecture that can generate pulse trains at repetition rates up to several GHz. This compact, fiber-based system is driven directly by the accelerator RF and so is inherently synchronized with the accelerating fields, and scales readily over a wide range of drive frequencies (L-band through X-band). The system will be required to produce 0.5 {mu}J, {approx}200 fs rise time, spatially and temporally shaped UV pulses designed to optimize the electron beam brightness. Presented is the current status of this system, producing 2 ps pulses from a continuous-wave source.

Gibson, D J; Cormier, E; Messerly, M J; Prantil, M A; Barty, C J

2012-05-11T23:59:59.000Z

Note: This page contains sample records for the topic "frequency drives vfds" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Small Businesses Helping Drive Economy: Clean Energy, Clean Sites...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Small Businesses Helping Drive Economy: Clean Energy, Clean Sites Small Businesses Helping Drive Economy: Clean Energy, Clean Sites A memo on small businesses helping drive the...

82

Base drive and overlap protection circuit  

DOE Patents (OSTI)

An inverter (34) which provides power to an A. C. machine (28) is controlled by a circuit (36) employing PWM control strategy whereby A. C. power is supplied to the machine at a preselectable frequency and preselectable voltage. This is accomplished by the technique of waveform notching in which the shapes of the notches are varied to determine the average energy content of the overall waveform. Through this arrangement, the operational efficiency of the A. C. machine is optimized. The control circuit includes a microcomputer and memory element which receive various parametric inputs and calculate optimized machine control data signals therefrom. The control data is asynchronously loaded into the inverter through an intermediate buffer (38). A base drive and overlap protection circuit is included to insure that both transistors of a complimentary pair are not conducting at the same time. In its preferred embodiment, the present invention is incorporated within an electric vehicle (10) employing a 144 VDC battery pack (32) and a three-phase induction motor (18).

Gritter, David J. (Southfield, MI)

1983-01-01T23:59:59.000Z

83

Time and Frequency Portal  

Science Conference Proceedings (OSTI)

NIST Home > Time and Frequency Portal. Time and Frequency Portal. Programs and Projects. CODATA values of the fundamental constants ...

2013-06-27T23:59:59.000Z

84

Vehicle Technologies Office: U.S. DRIVE  

NLE Websites -- All DOE Office Websites (Extended Search)

U.S. DRIVE U.S. DRIVE Logo for U.S. DRIVE - Driving Research and Innovation for Vehicle efficiency and Energy sustainability. U.S. DRIVE stands for Driving Research and Innovation for Vehicle efficiency and Energy sustainability. It is a non-binding and voluntary government-industry partnership focused on advanced automotive and related infrastructure technology research and development (R&D). Specifically, the Partnership is a forum for pre-competitive technical information exchange among partners to discuss R&D needs, develop joint goals and technology roadmaps, and evaluate R&D progress for a broad range of technical areas. By providing a framework for frequent and regular interaction among technical experts in a common area of expertise, the Partnership -

85

Electric vehicle drive train with contactor protection  

DOE Patents (OSTI)

A drive train for an electric vehicle includes a traction battery, a power drive circuit, a main contactor for connecting and disconnecting the traction battery and the power drive circuit, a voltage detector across contacts of the main contactor, and a controller for controlling the main contactor to prevent movement of its contacts to the closed position when the voltage across the contacts exceeds a predetermined threshold, to thereby protect the contacts of the contactor. The power drive circuit includes an electric traction motor and a DC-to-AC inverter with a capacitive input filter. The controller also inhibits the power drive circuit from driving the motor and thereby discharging the input capacitor if the contacts are inadvertently opened during motoring. A precharging contactor is controlled to charge the input filter capacitor prior to closing the main contactor to further protect the contacts of the main contactor. 3 figures.

Konrad, C.E.; Benson, R.A.

1994-11-29T23:59:59.000Z

86

Electric vehicle drive train with contactor protection  

SciTech Connect

A drive train for an electric vehicle includes a traction battery, a power drive circuit, a main contactor for connecting and disconnecting the traction battery and the power drive circuit, a voltage detector across contacts of the main contactor, and a controller for controlling the main contactor to prevent movement of its contacts to the closed position when the voltage across the contacts exceeds a predetermined threshold, to thereby protect the contacts of the contactor. The power drive circuit includes an electric traction motor and a DC-to-AC inverter with a capacitive input filter. The controller also inhibits the power drive circuit from driving the motor and thereby discharging the input capacitor if the contacts are inadvertently opened during motoring. A precharging contactor is controlled to charge the input filter capacitor prior to closing the main contactor to further protect the contacts of the main contactor.

Konrad, Charles E. (Roanoke, VA); Benson, Ralph A. (Roanoke, VA)

1994-01-01T23:59:59.000Z

87

DOE Drives Big Data Push  

NLE Websites -- All DOE Office Websites (Extended Search)

2 Volume 9 Issue 2 2 Volume 9 Issue 2 From YAGS to Planetary Biology . . . . . . . . . . . . . . . 2 DOE Drives Big Data Push . . . . . . . . . . . . . . . . . . . . 3 Sweating Small Scale Genomics . . . . . . . . . . . . . . . 6 The Future of the DOE JGI . . . . . . . . . . . . . . . . . . . . 7 Save the Date for Meeting 8 . . . . . . . . . . . . . . . . . . . 8 also in this issue With a record 488 genomics researchers and bioinformaticians sitting in the Marriott Walnut Creek ballroom, New York Times science writer Carl Zimmer opened the DOE Joint Genome Institute's 7th Annual Genomics of Energy & Environment Meeting on March 20, 2012. Sharing his thoughts about being "On the Genome Beat," he informed the audience that he was worn down by seeing news about scientists successfully sequencing yet another genome sequence, and that "maybe some genomes shouldn't be written about." Zimmer's words engaged the audience in a discussion that

88

Marketing & Driving Demand: Social Media Tools & Strategies ...  

NLE Websites -- All DOE Office Websites (Extended Search)

Marketing & Driving Demand: Social Media Tools & Strategies January 16, 2011 Maryanne Fuller (MF): Hi there. This is Maryanne Fuller from Lawrence Berkeley National Laboratory....

89

Electric Drive Vehicles and Their Infrastructure Issues  

NLE Websites -- All DOE Office Websites (Extended Search)

Clean Cities Webinar - Electric Drive Vehicles and Their Infrastructure Issues (March 2010) Jim Francfort and Don Karner Advanced Vehicle Testing Activity March 24, 2010 This...

90

Fuel Economy: What Drives Consumer Choice?  

E-Print Network (OSTI)

Car Buyers and Fuel Economy? ” Energy Policy, vol. 35, 2007.Fuel Economy: What Drives Consumer Choice? BY TOMyou think about fuel economy? ” Rather, we listened closely

Turrentine, Tom; Kurani, Kenneth S; Heffner, Reid R.

2008-01-01T23:59:59.000Z

91

Fuel Economy: What Drives Consumer Choice?  

E-Print Network (OSTI)

Car Buyers and Fuel Economy? ” Energy Policy, vol. 35, 2007.Fuel Economy: What Drives Consumer Choice? BY TOMyou think about fuel economy? ” Rather, we listened closely

Turrentine, Tom; Kurani, Kenneth; Heffner, Rusty

2007-01-01T23:59:59.000Z

92

Electric-Drive Vehicle Basics (Brochure)  

DOE Green Energy (OSTI)

Describes the basics of electric-drive vehicles, including hybrid electric vehicles, plug-in hybrid electric vehicles, all-electric vehicles, and the various charging options.

Not Available

2011-04-01T23:59:59.000Z

93

Wind Turbine Design Innovations Drive Industry Transformation...  

NLE Websites -- All DOE Office Websites (Extended Search)

Wind Turbine Design Innovations Drive Industry Transformation For more than 20 years, the National Renewable Energy Laboratory (NREL) has helped GE and its predecessors achieve...

94

High-megawatt Electric Drive Motors  

Science Conference Proceedings (OSTI)

... Page 2. © ABB BU Machines April 10, 2009 | Slide 2 High-megawatt Electric Drive Motors ... motor concept ... A selection of compressor motors >30MW. ...

2012-10-21T23:59:59.000Z

95

Lower-hybrid heating and current drive on PLT  

SciTech Connect

Steady currents up to 165 kA for 3.5 seconds and 420 kA for 0.3 seconds have been maintained by 800 MHz lower hybrid waves. For line-averaged densities up to 7 x 10/sup 12/ cm/sup -3/ the current is maintained with no input power from the ohmic heating transformer. The waves are launched with an array of six waveguides. Measurements of X rays and electron cyclotron radiation show that the rf power produces and maintains a suprathermal tail of electrons apparently independent of the number of fast electrons in the plasma prior to turning on the rf power. Measurements of current-drive efficiency and the electron tail provide direct evidence for a resonant wave-particle interaction. The radial profile of the rf-sustained current inferred from x-ray measurements is peaked in the center of the plasma and appears to obey the same q-value restraints as the inductively driven ohmic heating current. Current drive is observed to be accompanied always by radiation at frequencies greater than or equal to ..omega../sub ce/ and less than or equal to ..omega../sub pe/. The connection between this radiation and the current-drive mechanism is under study.

Hooke, W.; Bernabei, S.; Boyd, D.

1983-02-01T23:59:59.000Z

96

Microsoft Word - Lin_flow_drive_v2.doc  

NLE Websites -- All DOE Office Websites (Extended Search)

Yijun Lin Yijun Lin ylin@psfc.mit.edu 617-253-8706 New Method for Driving Flows in Plasmas Demonstrated Plasma flows, driven by mode-converted waves in the ion-cyclotron range of frequencies, have been demonstrated for the first time. In the latest experimental campaign of the Alcator C-Mod tokamak, we have demonstrated, for the first time, that significant toroidal and poloidal plasma flow can be driven by rf waves. The experiments launched waves with a frequency of 50 MHz into plasmas consisting of deuterium and helium-3 (the isotope of helium with atomic mass of 3) and a magnetic field around 5.1 Tesla. The rf wave undergoes a process called "mode conversion" inside the plasma. During the mode conversion process, the launched rf wave slows down, its wavelength becomes shorter, and the wave is converted from the

97

Bagdad Plant Raymond J. Polinski 585 Silicon Drive General Manager  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Bagdad Plant Raymond J. Polinski Bagdad Plant Raymond J. Polinski 585 Silicon Drive General Manager Leechburg, PA 15656 Grain-Oriented Electrical Steel e-mail: Raymond.Polinski@ATImetals.com E. Below are Allegheny Technologies Incorporated's comments on certain issues in which the DOE sought comment. 17. DOE seeks comment on nanotechnology composites and their potential for use in distribution transformers. Soft magnetic and amorphous particles with excellent magnetic properties can be and are currently produced, but the insulating matrix required to eliminate short-circuit paths dissipate power at the operating frequencies for power distribution transformers (50/60 Hz). Such transformer cores are currently only used for high-frequency applications where significant

98

Adjustable Speed Drive: Harmonic Effects on Induction Motors: Volumes 1 and 2  

Science Conference Proceedings (OSTI)

The use of adjustable speed drives (ASDs) for induction motors in electric power plants has several advantages, but ASDs produce harmonic current and voltage that can result in problems. The Standstill Frequency Response (RFR) program for the personal PC can be used to study these harmonic effects in a wide range of motors.

1995-11-08T23:59:59.000Z

99

Method and apparatus for improved efficiency in a pulse-width-modulated alternating current motor drive  

DOE Patents (OSTI)

A scheme for optimizing the efficiency of an AC motor drive operated in a pulse-width-modulated mode provides that the modulation frequency of the power furnished to the motor is a function of commanded motor torque and is higher at lower torque requirements than at higher torque requirements.

Konrad, Charles E. (Roanoke, VA); Boothe, Richard W. (Roanoke, VA)

1994-01-01T23:59:59.000Z

100

Method and apparatus for improved efficiency in a pulse-width-modulated alternating current motor drive  

DOE Patents (OSTI)

A scheme for optimizing the efficiency of an AC motor drive operated in a pulse-width-modulated mode provides that the modulation frequency of the power furnished to the motor is a function of commanded motor torque and is higher at lower torque requirements than at higher torque requirements.

Konrad, Charles E. (Roanoke, VA); Boothe, Richard W. (Roanoke, VA)

1996-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "frequency drives vfds" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Adjustable Speed Drive: Harmonic Effects on Induction Motors: Volumes 1 and 2  

Science Conference Proceedings (OSTI)

The use of adjustable speed drives (ASDs) for induction motors in electric power plants has several advantages, but ASDs produce harmonic current and voltage that can result in problems. The Standstill Frequency Response (RFR) program for the personal PC can be used to study these harmonic effects in a wide range of motors.

1995-11-09T23:59:59.000Z

102

Method and apparatus for improved efficiency in a pulse-width-modulated alternating current motor drive  

DOE Patents (OSTI)

A scheme for optimizing the efficiency of an AC motor drive operated in a pulse-width-modulated mode provides that the modulation frequency of the power furnished to the motor is a function of commanded motor torque and is higher at lower torque requirements than at higher torque requirements. 6 figs.

Konrad, C.E.; Boothe, R.W.

1996-01-23T23:59:59.000Z

103

Method and apparatus for improved efficiency in a pulse-width-modulated alternating current motor drive  

DOE Patents (OSTI)

A scheme for optimizing the efficiency of an AC motor drive operated in a pulse-width-modulated mode provides that the modulation frequency of the power furnished to the motor is a function of commanded motor torque and is higher at lower torque requirements than at higher torque requirements. 6 figures.

Konrad, C.E.; Boothe, R.W.

1994-02-15T23:59:59.000Z

104

FPGA Implementation of Space Vector PWM Technique for Voltage Source Inverter Fed Induction Motor Drive  

Science Conference Proceedings (OSTI)

This paper presents implementation of Space Vector Pulse Width Modulation (SVPWM) technique for three phase Voltage Source Inverter (VSI) using Field Programmable Gate Array (FPGA). Variable voltage and frequency supply to ac drives is invariably obtained ... Keywords: VSI, SVPWM, FPGA, Induction Motor

R. Rajendran; N. Devarajan

2009-12-01T23:59:59.000Z

105

An Assessment of High Performance AC Motor Drives Versus DC Motor Drives  

Science Conference Proceedings (OSTI)

In today's rapidly changing market place, drive users are applying AC and DC drives in applications that require more demanding speed and torque performance. Properly matching a drive's rating and unit characteristics to an application are two very effective ways of managing unit cost and cost reduction.

1998-12-29T23:59:59.000Z

106

DRIVE Analysis Tool Generates Custom Vehicle Drive Cycles Based on Real-World Data (Fact Sheet)  

DOE Green Energy (OSTI)

This fact sheet from the National Renewable Energy Laboratory describes the Drive-Cycle Rapid Investigation, Visualization, and Evaluation (DRIVE) analysis tool, which uses GPS and controller area network data to characterize vehicle operation and produce custom vehicle drive cycles, analyzing thousands of hours of data in a matter of minutes.

Not Available

2013-04-01T23:59:59.000Z

107

UCDavis University of California Learning By Driving  

E-Print Network (OSTI)

% 29% 0% 2% 10% 37% 39% 71% Solar Wind Hydro Nuclear Natural Gas Coal The electricity for charging fun with it. "I love the regenerative braking. In fact, I miss it when I drive my other cars." ­ Household 8 "It is like driving a slot car. It is exciting; it is as much fun as accelerating" ­ Survey

California at Davis, University of

108

Electric top drives gain wide industry acceptance  

Science Conference Proceedings (OSTI)

Since its introduction, the top drive drilling system has gained acceptance as a productive and safe method for drilling oil and gas wells. Originally, the system was used mostly for offshore and higher cost land drilling, and it had to be installed as a permanent installation because of its enormous weight and size. Essentially, a top drive replaces the kelly and rotary table as the means of rotating drillpipe on oil, gas and geothermal rigs and is considered to be 15% to 40% more efficient than a kelly drive. Top drive systems allow the operator to drill and maintain directional orientation for triple stands and provide tripping efficiency because of the ability to ream and circulate with triple stands, to reduce the risk of stuck pipe or lost wells, and to improve well control and pipe handling safety. The paper describes electric top drives with DC motors, top drives with AC motors, top drives with permanent magnet motors, and top drives with permanent magnet brushless synchronous motors.

Riahi, M.L.

1998-05-01T23:59:59.000Z

109

Control rod drive hydraulic system  

DOE Patents (OSTI)

A hydraulic system for a control rod drive (CRD) includes a variable output-pressure CR pump operable in a charging mode for providing pressurized fluid at a charging pressure, and in a normal mode for providing the pressurized fluid at a purge pressure, less than the charging pressure. Charging and purge lines are disposed in parallel flow between the CRD pump and the CRD. A hydraulic control unit is disposed in flow communication in the charging line and includes a scram accumulator. An isolation valve is provided in the charging line between the CRD pump and the scram accumulator. A controller is operatively connected to the CRD pump and the isolation valve and is effective for opening the isolation valve and operating the CRD pump in a charging mode for charging the scram accumulator, and closing the isolation valve and operating the CRD pump in a normal mode for providing to the CRD through the purge line the pressurized fluid at a purge pressure lower than the charging pressure.

Ose, Richard A. (San Jose, CA)

1992-01-01T23:59:59.000Z

110

Gas Mileage Tips - Driving More Efficiently  

NLE Websites -- All DOE Office Websites (Extended Search)

Driving More Efficiently Driving More Efficiently Personalize Fuel Prices Select the fuel type and enter your fuel price to personalize savings estimates. Regular Midgrade Premium Diesel E85 CNG LPG $ 3.33 /gal Save My Prices Use Default Prices Click "Save My Prices" to apply your prices to other pages, or click "Use Default Prices" use national average prices. Drive Sensibly frustrated driver Aggressive driving (speeding, rapid acceleration and braking) wastes gas. It can lower your gas mileage by 33% at highway speeds and by 5% around town. Sensible driving is also safer for you and others, so you may save more than gas money. Fuel Economy Benefit: 5%-33% Equivalent Gasoline Savings: $0.17-$1.10/gallon Observe the Speed Limit (New Information) Graph showing MPG decreases rapidly at speeds above 50 mph

111

Electrifying Your Drive | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Electrifying Your Drive Electrifying Your Drive Electrifying Your Drive April 27, 2010 - 7:30am Addthis Shannon Brescher Shea Communications Manager, Clean Cities Program For anyone who grew up watching The Jetsons (or Back to the Future, depending on your generation), the "Car of the Future!" flew through the skies with the greatest of ease. Although most of us have given up on our hopes of a flying car, anything beyond the internal combustion engine has seemed hopelessly out of reach until recently. However, with several manufacturers planning on producing plug-in and all-electric vehicles, the Car of the Future will be available soon! But before you put down a deposit, it's helpful to understand the different types of electric drive technologies. The most basic form of electric drive

112

Electrifying Your Drive | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Electrifying Your Drive Electrifying Your Drive Electrifying Your Drive April 27, 2010 - 7:30am Addthis Shannon Brescher Shea Communications Manager, Clean Cities Program For anyone who grew up watching The Jetsons (or Back to the Future, depending on your generation), the "Car of the Future!" flew through the skies with the greatest of ease. Although most of us have given up on our hopes of a flying car, anything beyond the internal combustion engine has seemed hopelessly out of reach until recently. However, with several manufacturers planning on producing plug-in and all-electric vehicles, the Car of the Future will be available soon! But before you put down a deposit, it's helpful to understand the different types of electric drive technologies. The most basic form of electric drive

113

Fast wave current drive on DIII-D  

SciTech Connect

The physics of electron heating and current drive with the fast magnetosonic wave has been demonstrated on DIII-D, in reasonable agreement with theoretical modeling. A recently completed upgrade to the fast wave capability should allow full noninductive current drive in steady state advanced confinement discharges and provide some current density profile control for the Advanced Tokamak Program. DIII-D now has three four-strap fast wave antennas and three transmitters, each with nominally 2 MW of generator power. Extensive experiments have been conducted with the first system, at 60 MHz, while the two newer systems have come into operation within the past year. The newer systems are configured for 60 to 120 MHz. The measured FWCD efficiency is found to increase linearly with electron temperature as {gamma} = 0.4 {times} 10{sup 18} T{sub eo} (keV) [A/m{sup 2}W], measured up to central electron temperature over 5 keV. A newly developed technique for determining the internal noninductive current density profile gives efficiencies in agreement with this scaling and profiles consistent with theoretical predictions. Full noninductive current drive at 170 kA was achieved in a discharge prepared by rampdown of the Ohmic current. Modulation of microwave reflectometry signals at the fast wave frequency is being used to investigate fast wave propagation and damping. Additionally, rf pick-up probes on the internal boundary of the vessel provide a comparison with ray tracing codes, with dear evidence for a toroidally directed wave with antenna phasing set for current drive. There is some experimental evidence for fast wave absorption by energetic beam ions at high cyclotron harmonic resonances.

deGrassie, J.S.; Petty, C.C.; Pinsker, R.I. [and others

1995-07-01T23:59:59.000Z

114

Low-Frequency Circulation at the Edge of the Scotian Shelf  

Science Conference Proceedings (OSTI)

Records of current, temperature and salinity from a two-year mooring program at the shelf break off Nova Scotia are examined to determine the low-frequency oceanic responses to the driving surface wind field and fluctuating offshore currents ...

Peter C. Smith; Brian D. Petrif

1982-01-01T23:59:59.000Z

115

Alternative Fuels Data Center: Efficient Driving Behaviors to Conserve Fuel  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Efficient Driving Efficient Driving Behaviors to Conserve Fuel to someone by E-mail Share Alternative Fuels Data Center: Efficient Driving Behaviors to Conserve Fuel on Facebook Tweet about Alternative Fuels Data Center: Efficient Driving Behaviors to Conserve Fuel on Twitter Bookmark Alternative Fuels Data Center: Efficient Driving Behaviors to Conserve Fuel on Google Bookmark Alternative Fuels Data Center: Efficient Driving Behaviors to Conserve Fuel on Delicious Rank Alternative Fuels Data Center: Efficient Driving Behaviors to Conserve Fuel on Digg Find More places to share Alternative Fuels Data Center: Efficient Driving Behaviors to Conserve Fuel on AddThis.com... More in this section... Idle Reduction Parts & Equipment Maintenance Driving Behavior Management Strategies

116

Control rod drive for reactor shutdown  

DOE Patents (OSTI)

A means for rapidly shutting down or scramming a nuclear reactor, such as a liquid metal-cooled fast breeder reactor, and serves as a backup to the primary shutdown system. The control rod drive consists basically of an in-core assembly, a drive shaft and seal assembly, and a control drive mechanism. The control rod is driven into the core region of the reactor by gravity and hydraulic pressure forces supplied by the reactor coolant, thus assuring that common mode failures will not interfere with or prohibit scramming the reactor when necessary.

McKeehan, Ernest R. (Los Gatos, CA); Shawver, Bruce M. (San Jose, CA); Schiro, Donald J. (San Jose, CA); Taft, William E. (Los Gatos, CA)

1976-01-20T23:59:59.000Z

117

Image fusion for a nighttime driving display  

E-Print Network (OSTI)

An investigation into image fusion for a nighttime driving display application was performed. Most of the image fusion techniques being investigated in this application were developed for other purposes. When comparing the ...

Herrington, William Frederick

2005-01-01T23:59:59.000Z

118

Driving Efficiencies Track | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Driving Efficiencies Track Driving Efficiencies Track Driving Efficiencies Track Driving Efficiencies Track Tuesday April 17, 2012 From E-Mail to "The Stream" by Don Burke Taking Records Inventory Into the 21st Century by Lorie A. Robb Engineering and Operations Control: Embrace the Culture by Cheryl Bolen IT Project Management Framework by Denise Hill Wednesday April 18, 2012 Records Warehouse Operations and Records Storage for External Customers by Karen Hatch Preservation of Long-Term Temporary Records by Jeanie Gueretta Mobile Initiatives Effecting Change at Hanford by Don Stewart DOE's CIO's EWA by Sarah Gamage, Don Schade and Alan Andon Green IT 2012: Sustainable Electronics by Edwin Luevanos and Jeff Eagan Thursday April 19, 2012 Document Management and Control System by Melissa Ruth

119

Direct drive wind turbine - Energy Innovation Portal  

A wind turbine is provided that minimizes the size of the drive train and nacelle while maintaining the power electronics and transformer at the top of the tower. The ...

120

Consider Steam Turbine Drives for Rotating Equipment  

SciTech Connect

This revised ITP tip sheet on steam turbine drives for rotating equipment provides how-to advice for improving the system using low-cost, proven practices and technologies.

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "frequency drives vfds" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Better Buildings Neighborhood Program: Driving Demand  

NLE Websites -- All DOE Office Websites (Extended Search)

even know they have. This section explains how you can use effective marketing to drive demand for energy upgrades in your community. Following the lead of many Better Buildings...

122

4 MW fast wave current drive upgrade for DIII-D  

SciTech Connect

The DIII-D program has just completed a major addition to its ion cyclotron range of frequency (ICRF) systems. This upgrade project added two new fast wave current drive (FWCD) systems, with each system consisting of a 2 MW, 30 to 120 MHz transmitter, ceramic insulated transmission lines and tuner elements, and water-cooled four-strap antenna. With this addition of 4 MW of FWCD power to the original 2 MW, 30 to 60 MHz capability, experiments can be performed that will explore advanced tokamak plasma configurations by using the centrally localized current drive to effect current profile modifications.

Callis, R.W.; Cary, W.P. [General Atomics, San Diego, CA (United States); Baity, F.W. [Oak Ridge National Lab., TN (United States)] [and others

1994-09-01T23:59:59.000Z

123

PHEV and Other Electric Drive Testing Results and Resources  

NLE Websites -- All DOE Office Websites (Extended Search)

Advanced Vehicle Testing Activity PHEV and Other Electric Drive Testing Results and Resources Jim Francfort Electric Drive Session Alternative Fuels & Vehicles Las Vegas, Nevada -...

124

Microsoft Word - Compare Driving Styles_ ETEC Hymotion Prius...  

NLE Websites -- All DOE Office Websites (Extended Search)

Driving intensity is the energy at the wheels used for propulsion. Recaptured energy through regenerative braking is not considered when calculating driving intensity....

125

Energy Department Announces $60 Million to Drive Affordable,...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

60 Million to Drive Affordable, Efficient Solar Power Energy Department Announces 60 Million to Drive Affordable, Efficient Solar Power October 22, 2013 - 11:45am Addthis News...

126

Energy Department Announces $60 Million to Drive Affordable,...  

NLE Websites -- All DOE Office Websites (Extended Search)

0 Million to Drive Affordable, Efficient Solar Power Energy Department Announces 60 Million to Drive Affordable, Efficient Solar Power October 22, 2013 - 11:45am Addthis News...

127

The Transportation Leapfrog: Using Smart Phones to Collect Driving...  

NLE Websites -- All DOE Office Websites (Extended Search)

Transportation Leapfrog: Using Smart Phones to Collect Driving Data and Model Fuel Economy in India Title The Transportation Leapfrog: Using Smart Phones to Collect Driving Data...

128

Secretary Moniz Announces New Biofuels Projects to Drive Cost...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Announces New Biofuels Projects to Drive Cost Reductions, Technological Breakthroughs Secretary Moniz Announces New Biofuels Projects to Drive Cost Reductions, Technological...

129

Energy Department Invests to Drive Down Costs of Carbon Capture...  

NLE Websites -- All DOE Office Websites (Extended Search)

to Drive Down Costs of Carbon Capture, Support Reductions in Greenhouse Gas Pollution Energy Department Invests to Drive Down Costs of Carbon Capture, Support Reductions in...

130

Reduction in iron losses in Indirect Vector-Controlled IM Drive using FLC  

E-Print Network (OSTI)

This paper describes the use of fuzzy logic controller for efficiency optimization control of a drive while keeping good dynamic response. At steady-state light-load condition, the fuzzy controller adaptively adjusts the excitation current with respect to the torque current to give the minimum total copper and iron loss. The measured input power such that, for a given load torque and speed, the drive settles down to the minimum input power, i.e., operates at maximum efficiency. The low-frequency pulsating torque due to decrementation of flux is compensated in a feed forward manner. If the load torque or speed commands changes, the efficiency search algorithm is abandoned and the rated flux is established to get the best dynamic response. The drive system with the proposed efficiency optimization controller has been simulated with lossy models of converter and machine, and its performance has been thoroughly investigated.

Srisailam, C; Trivedi, Anurag

2010-01-01T23:59:59.000Z

131

Portable top drive cuts horizontal drilling costs  

SciTech Connect

Economic analysis of a seven-well, long-reach horizontal drilling program into an unconsolidated, heavy-oil-bearing reservoir in Winter field near the Alberta/Saskatchewan border in Canada reveals that -- in the right application -- renting a portable top drive drilling system can reduce total drilling costs. Use of the portable top drive combined with other cost-saving measures enabled Saskoil, one of Canada`s larger independents, to drill more cheaply, on a cost-per-meter basis, in 1993 than in 1992. This was despite significant rental rates for drilling rigs and directional drilling services caused by increased demand in Western Canada. Total cost savings of 10% on wells that would otherwise cost in the (C) $500,000 range are believed realistic. Based on this year`s performance, Saskoil recommends top drive for the company`s future horizontal wells in this area. This article describes the operator`s horizontal well program, advantages of top drive in that program and how it was installed and applied. Estimated time savings for six wells, plus other ways top drive can cut costs and improve operations are discussed.

Jackson, B. [Saskoil, Regina, Saskatchewan (Canada); Yager, D. [Tesco Drilling Tech., Calgary, Alberta (Canada)

1993-11-01T23:59:59.000Z

132

Recommended Rest Frequencies  

Science Conference Proceedings (OSTI)

Return to Table of Contents NIST Recommended Rest Frequencies for Observed Interstellar Molecular Microwave Transitions. by Frank J. Lovas. ...

133

Objective methods of assessment of influence of alcohol on driving safety: study performed driving simulators  

Science Conference Proceedings (OSTI)

The paper is focused on an introduction of a set of experiments focused on objective methods used for detection of driving impairment caused by influence of different level of alcohol in blood. It introduces the initial experiments which were performed ... Keywords: alcohol, driver's impairment, driving simulation

Roman Piekník; Stanislav Novotny; Petr Bouchner

2007-09-01T23:59:59.000Z

134

Eastern Frequency Response Study  

Science Conference Proceedings (OSTI)

This study was specifically designed to investigate the frequency response of the Eastern Interconnection that results from large loss-of-generation events of the type targeted by the North American Electric Reliability Corp. Standard BAL-003 Frequency Response and Frequency Bias Setting (NERC 2012a), under possible future system conditions with high levels of wind generation.

Miller, N.W.; Shao, M.; Pajic, S.; D'Aquila, R.

2013-05-01T23:59:59.000Z

135

Drive Less, Save More | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Drive Less, Save More Drive Less, Save More Drive Less, Save More May 24, 2011 - 12:31pm Addthis Shannon Brescher Shea Communications Manager, Clean Cities Program For someone who works in the Vehicle Technologies Program, I actually don't spend that much time in my automobile. I usually get around using a combination of public transit, my bike, and my own two feet. But I'm an exception. In the U.S., the vehicle miles travelled per person is actually twice as high as it is in Western Europe and three times higher than in Japan. However, alternatives to using your car have a wealth of benefits. In addition to reducing petroleum consumption, they can lower greenhouse gas emissions, improve air quality, decrease stress, and bring communities together. Fortunately, there are a variety of ways to minimize the distance

136

DistributionDrive | Open Energy Information  

Open Energy Info (EERE)

DistributionDrive DistributionDrive Jump to: navigation, search Name DistributionDrive Place Addison, Texas Zip 75001 Product Supplier of Biodiesel, Straight Vegetable Oil (SVO), Recycled Vegetable Oil (WVO) and Engine Conversion Kits to use this fuels. Coordinates 38.477365°, -80.412149° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":38.477365,"lon":-80.412149,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

137

Drive Less, Save More | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Drive Less, Save More Drive Less, Save More Drive Less, Save More May 24, 2011 - 12:31pm Addthis Shannon Brescher Shea Communications Manager, Clean Cities Program For someone who works in the Vehicle Technologies Program, I actually don't spend that much time in my automobile. I usually get around using a combination of public transit, my bike, and my own two feet. But I'm an exception. In the U.S., the vehicle miles travelled per person is actually twice as high as it is in Western Europe and three times higher than in Japan. However, alternatives to using your car have a wealth of benefits. In addition to reducing petroleum consumption, they can lower greenhouse gas emissions, improve air quality, decrease stress, and bring communities together. Fortunately, there are a variety of ways to minimize the distance

138

Microsoft Word - ORNL Hard Drives Final 08132010  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Inspections and Special Inquires Inspections and Special Inquires Inspection Report Internal Controls over Computer Hard Drives at the Oak Ridge National Laboratory INS-O-10-03 August 2010 Department of Energy Washington, DC 20585 August 16, 2010 MEMORANDUM FOR THE DIRECTOR, OFFICE OF SCIENCE FROM: Sandra D. Bruce Assistant Inspector General for Inspections and Special Inquiries SUBJECT: INFORMATION: Inspection Report on "Internal Controls over Computer Hard Drives at the Oak Ridge National Laboratory" BACKGROUND The Department of Energy's (Department) Oak Ridge National Laboratory (ORNL) in Oak

139

Utility of Variable Speed Drives for Fish Protection at Cooling Water Intakes  

Science Conference Proceedings (OSTI)

This report reviews the utility of a variable frequency drive (VFD) for reducing cooling water flow and potentially the extent of impingement and entrainment of fish and shellfish at power plant cooling water intakes. Reduction of impingement and entrainment at cooling water intakes is the objective of Clean Water Act 316(b) requirements that are being developed by the U.S. Environmental Protection Agency (EPA).

2010-06-03T23:59:59.000Z

140

Guide to the Industrial Application of Motors and Variable-Speed Drives  

Science Conference Proceedings (OSTI)

This application guide is intended to aid in screening, selecting, and procuring specification processes for variable frequency drive (VFD) installations. It also is intended to provide a comprehensive up-to-date assessment of opportunities to save energy and improve power quality performance with state-of-the-art VFD technologies. The document supplies background information on electric motors and applications, describes VFD topologies, and details procurement specifications and application consideratio...

2001-09-27T23:59:59.000Z

Note: This page contains sample records for the topic "frequency drives vfds" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

PCTS Local Driving Directions Princeton University  

E-Print Network (OSTI)

PCTS Local Driving Directions Princeton University Princeton Center for Theoretical Science Jadwin to Jadwin Hall, there are several parking options. a) There are limited visitors' parking spots directly, in the first aisle, after you turn into the parking lot, which is located on Ivy Lane. (Use the directions

142

Conditions driving chemical freeze-out  

E-Print Network (OSTI)

We propose the entropy density as the thermodynamic condition driving best the chemical freeze-out in heavy-ion collisions. Taking its value from lattice calculations at zero chemical potential, we find that it is excellent in reproducing the experimentally estimated freeze-out parameters. The two characteristic endpoints in the freeze-out diagram are reproduced as well.

A. Tawfik

2004-10-28T23:59:59.000Z

143

Query processing techniques for solid state drives  

Science Conference Proceedings (OSTI)

Solid state drives perform random reads more than 100x faster than traditional magnetic hard disks, while offering comparable sequential read and write bandwidth. Because of their potential to speed up applications, as well as their reduced power consumption, ... Keywords: columnar storage, flash memory, join index, late materialization, semi-join reduction, ssd

Dimitris Tsirogiannis; Stavros Harizopoulos; Mehul A. Shah; Janet L. Wiener; Goetz Graefe

2009-06-01T23:59:59.000Z

144

Oscillation control system for electric motor drive  

DOE Patents (OSTI)

A feedback system for controlling mechanical oscillations in the torsionally complaint drive train of an electric or other vehicle. Motor speed is converted in a processor to estimate state signals in which a plant model which are used to electronically modify the torque commands applied to the motor. 5 figs.

Slicker, J.M.; Sereshteh, A.

1988-08-30T23:59:59.000Z

145

Oscillation control system for electric motor drive  

DOE Patents (OSTI)

A feedback system for controlling mechanical oscillations in the torsionally complaint drive train of an electric or other vehicle. Motor speed is converted in a processor to estimate state signals in which a plant model which are used to electronically modify thetorque commands applied to the motor.

Slicker, James M. (Union Lake, MI); Sereshteh, Ahmad (Union Lake, MI)

1988-01-01T23:59:59.000Z

146

Alternative Fuels Data Center: Indiana Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Indiana Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Indiana Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Indiana Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Indiana Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Indiana Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Indiana Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Indiana Laws and Incentives for Driving / Idling

147

Alternative Fuels Data Center: Delaware Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Delaware Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Delaware Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Delaware Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Delaware Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Delaware Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Delaware Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Delaware Laws and Incentives for Driving / Idling

148

Alternative Fuels Data Center: Wyoming Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Wyoming Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Wyoming Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Wyoming Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Wyoming Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Wyoming Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Wyoming Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Wyoming Laws and Incentives for Driving / Idling

149

Alternative Fuels Data Center: Oklahoma Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Oklahoma Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Oklahoma Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Oklahoma Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Oklahoma Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Oklahoma Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Oklahoma Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Oklahoma Laws and Incentives for Driving / Idling

150

Alternative Fuels Data Center: Hawaii Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Hawaii Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Hawaii Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Hawaii Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Hawaii Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Hawaii Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Hawaii Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Hawaii Laws and Incentives for Driving / Idling

151

Alternative Fuels Data Center: Virginia Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Virginia Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Virginia Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Virginia Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Virginia Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Virginia Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Virginia Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Virginia Laws and Incentives for Driving / Idling

152

Alternative Fuels Data Center: Tennessee Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Tennessee Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Tennessee Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Tennessee Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Tennessee Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Tennessee Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Tennessee Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Tennessee Laws and Incentives for Driving / Idling

153

Alternative Fuels Data Center: Oregon Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Oregon Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Oregon Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Oregon Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Oregon Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Oregon Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Oregon Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Oregon Laws and Incentives for Driving / Idling

154

Alternative Fuels Data Center: Minnesota Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Minnesota Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Minnesota Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Minnesota Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Minnesota Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Minnesota Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Minnesota Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Minnesota Laws and Incentives for Driving / Idling

155

Alternative Fuels Data Center: Missouri Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Missouri Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Missouri Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Missouri Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Missouri Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Missouri Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Missouri Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Missouri Laws and Incentives for Driving / Idling

156

Alternative Fuels Data Center: Utah Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Utah Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Utah Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Utah Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Utah Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Utah Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Utah Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Utah Laws and Incentives for Driving / Idling

157

Alternative Fuels Data Center: Idaho Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Idaho Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Idaho Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Idaho Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Idaho Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Idaho Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Idaho Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Idaho Laws and Incentives for Driving / Idling

158

Alternative Fuels Data Center: Illinois Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Illinois Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Illinois Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Illinois Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Illinois Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Illinois Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Illinois Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Illinois Laws and Incentives for Driving / Idling

159

Alternative Fuels Data Center: Kentucky Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Kentucky Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Kentucky Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Kentucky Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Kentucky Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Kentucky Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Kentucky Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Kentucky Laws and Incentives for Driving / Idling

160

Alternative Fuels Data Center: Louisiana Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Louisiana Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Louisiana Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Louisiana Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Louisiana Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Louisiana Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Louisiana Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Louisiana Laws and Incentives for Driving / Idling

Note: This page contains sample records for the topic "frequency drives vfds" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Alternative Fuels Data Center: Arizona Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Arizona Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Arizona Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Arizona Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Arizona Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Arizona Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Arizona Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Arizona Laws and Incentives for Driving / Idling

162

Alternative Fuels Data Center: Nevada Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Nevada Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Nevada Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Nevada Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Nevada Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Nevada Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Nevada Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Nevada Laws and Incentives for Driving / Idling

163

Alternative Fuels Data Center: Montana Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Montana Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Montana Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Montana Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Montana Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Montana Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Montana Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Montana Laws and Incentives for Driving / Idling

164

Alternative Fuels Data Center: Colorado Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Colorado Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Colorado Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Colorado Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Colorado Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Colorado Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Colorado Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Colorado Laws and Incentives for Driving / Idling

165

Alternative Fuels Data Center: Kansas Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Kansas Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Kansas Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Kansas Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Kansas Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Kansas Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Kansas Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Kansas Laws and Incentives for Driving / Idling

166

Alternative Fuels Data Center: Wisconsin Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Wisconsin Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Wisconsin Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Wisconsin Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Wisconsin Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Wisconsin Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Wisconsin Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Wisconsin Laws and Incentives for Driving / Idling

167

Alternative Fuels Data Center: Texas Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Texas Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Texas Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Texas Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Texas Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Texas Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Texas Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Texas Laws and Incentives for Driving / Idling

168

Alternative Fuels Data Center: Nebraska Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Nebraska Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Nebraska Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Nebraska Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Nebraska Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Nebraska Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Nebraska Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Nebraska Laws and Incentives for Driving / Idling

169

Alternative Fuels Data Center: Maine Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Maine Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Maine Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Maine Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Maine Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Maine Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Maine Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Maine Laws and Incentives for Driving / Idling

170

Alternative Fuels Data Center: Federal Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Federal Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Federal Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Federal Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Federal Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Federal Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Federal Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Federal Laws and Incentives for Driving / Idling

171

Alternative Fuels Data Center: Florida Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Florida Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Florida Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Florida Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Florida Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Florida Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Florida Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Florida Laws and Incentives for Driving / Idling

172

Alternative Fuels Data Center: Iowa Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Iowa Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Iowa Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Iowa Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Iowa Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Iowa Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Iowa Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Iowa Laws and Incentives for Driving / Idling

173

Alternative Fuels Data Center: Maryland Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Maryland Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Maryland Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Maryland Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Maryland Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Maryland Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Maryland Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Maryland Laws and Incentives for Driving / Idling

174

Alternative Fuels Data Center: Alaska Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Alaska Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Alaska Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Alaska Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Alaska Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Alaska Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Alaska Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Alaska Laws and Incentives for Driving / Idling

175

Alternative Fuels Data Center: Vermont Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Vermont Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Vermont Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Vermont Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Vermont Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Vermont Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Vermont Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Vermont Laws and Incentives for Driving / Idling

176

Vehicle Technologies Office: Fact #452: January 15, 2007 Driving  

NLE Websites -- All DOE Office Websites (Extended Search)

2: January 15, 2: January 15, 2007 Driving Differences to someone by E-mail Share Vehicle Technologies Office: Fact #452: January 15, 2007 Driving Differences on Facebook Tweet about Vehicle Technologies Office: Fact #452: January 15, 2007 Driving Differences on Twitter Bookmark Vehicle Technologies Office: Fact #452: January 15, 2007 Driving Differences on Google Bookmark Vehicle Technologies Office: Fact #452: January 15, 2007 Driving Differences on Delicious Rank Vehicle Technologies Office: Fact #452: January 15, 2007 Driving Differences on Digg Find More places to share Vehicle Technologies Office: Fact #452: January 15, 2007 Driving Differences on AddThis.com... Fact #452: January 15, 2007 Driving Differences Those living in the center city drive fewer miles in a day than those in

177

Drive piston assembly for a valve actuator assembly  

DOE Patents (OSTI)

A drive piston assembly is provided that is operable to selectively open a poppet valve. The drive piston assembly includes a cartridge defining a generally stepped bore. A drive piston is movable within the generally stepped bore and a boost sleeve is coaxially disposed with respect to the drive piston. A main fluid chamber is at least partially defined by the generally stepped bore, drive piston, and boost sleeve. First and second feedback chambers are at least partially defined by the drive piston and each are disposed at opposite ends of the drive piston. At least one of the drive piston and the boost sleeve is sufficiently configured to move within the generally stepped bore in response to fluid pressure within the main fluid chamber to selectively open the poppet valve. A valve actuator assembly and engine are also provided incorporating the disclosed drive piston assembly.

Sun, Zongxuan (Troy, MI)

2010-02-23T23:59:59.000Z

178

primary frequency standards  

Science Conference Proceedings (OSTI)

NIST-F1 Cesium Fountain Atomic Clock The Primary Time and Frequency Standard for the United States. NIST-F1, the nation's ...

2013-02-04T23:59:59.000Z

179

Proceedings of the 35th conference on Winter simulation: driving innovation: driving innovation  

Science Conference Proceedings (OSTI)

The 2003 Winter Simulation Conference (WSC) continues a thirty-six year tradition as the premier event in discrete-event and combined discrete-continuous simulation. The conference theme, Driving Innovation, invites you to push the boundaries and find ...

David Ferrin; Douglas J. Morrice

2003-12-01T23:59:59.000Z

180

4 MW upgrade to the DIII-D fast wave current drive system  

SciTech Connect

The DIII-D fast wave current drive (FWCD) system is being upgraded by an additional 4 MW in the 30 to 120 MHz frequency range. This capability adds to the existing 2 MW 30 to 60 MHz system. Two new ABB transmitters of the type that are in use on the ASDEX-Upgrade tokamak in Garching will be used to drive two new water-cooled four-strap antennas to be installed in DIII-D in early 1994. The transmission and tuning system for each antenna will be similar to that now in use for the first 2 MW system on DIII-D, but with some significant improvements. One improvement consists of adding a decoupler element to counter the mutual coupling between the antenna straps which results in large imbalances in the power to a strap for the usual current drive intrastrap phasing of 90{degrees}. Another improvement is to utilize pressurized, ceramic-insulated transmission lines. The intrastrap phasing will again be controlled in pairs, with a pair of straps coupled in a resonant loop configuration, locking their phase difference at either 0 or 180{degrees}, depending upon the length of line installed. These resonant loops will incorporate a phase shifter so that they will be able to be tuned to resonance at several frequencies in the operating band of the transmitter. With the frequency change capability of the ABB generators, the FWCD frequency will thus be selectable on a shot-to-shot basis, from this preselected set of frequencies. The schedule is for experiments to begin with this added 4 MW capability in mid-1994. The details of the system are described.

deGrassie, J.S.; Pinsker, R.I.; Cary, W.P.

1993-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "frequency drives vfds" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Ancillary Frequency Control of Direct Drive Full-Scale Converter Based Wind Power Plants  

E-Print Network (OSTI)

of doubly fed induction machine (DFIG) and PMSG based wind turbines have been proposed [7-10]. In this paper

Hu, Weihao

182

Frequency scaling of linear super-colliders  

SciTech Connect

The development of electron-positron linear colliders in the TeV energy range will be facilitated by the development of high-power rf sources at frequencies above 2856 MHz. Present S-band technology, represented by the SLC, would require a length in excess of 50 km per linac to accelerate particles to energies above 1 TeV. By raising the rf driving frequency, the rf breakdown limit is increased, thereby allowing the length of the accelerators to be reduced. Currently available rf power sources set the realizable gradient limit in an rf linac at frequencies above S-band. This paper presents a model for the frequency scaling of linear colliders, with luminosity scaled in proportion to the square of the center-of-mass energy. Since wakefield effects are the dominant deleterious effect, a separate single-bunch simulation model is described which calculates the evolution of the beam bunch with specified wakefields, including the effects of using programmed phase positioning and Landau damping. The results presented here have been obtained for a SLAC structure, scaled in proportion to wavelength.

Mondelli, A.; Chernin, D.; Drobot, A.; Reiser, M.; Granatstein, V.

1986-06-01T23:59:59.000Z

183

Stabilized radio frequency quadrupole  

DOE Patents (OSTI)

Disclosed is a long-vane stabilized radio frequency resonator for accelerating charged particles and including means defining a radio frequency resonator cavity, a plurality of long vanes mounted in the defining means for dividing the cavity into sections, and means interconnecting opposing ones of the plurality of vanes for stabilizing the resonator. 5 figs.

Lancaster, H.D.; Fugitt, J.A.; Howard, D.R.

1984-12-25T23:59:59.000Z

184

Estimating frequency of change  

Science Conference Proceedings (OSTI)

Many online data sources are updated autonomously and independently. In this article, we make the case for estimating the change frequency of data to improve Web crawlers, Web caches and to help data mining. We first identify various scenarios, where ... Keywords: Change frequency estimation, Poisson process

Junghoo Cho; Hector Garcia-Molina

2003-08-01T23:59:59.000Z

185

Microfabricated ion frequency standard  

DOE Patents (OSTI)

A microfabricated ion frequency standard (i.e. an ion clock) is disclosed with a permanently-sealed vacuum package containing a source of ytterbium (Yb) ions and an octupole ion trap. The source of Yb ions is a micro-hotplate which generates Yb atoms which are then ionized by a ultraviolet light-emitting diode or a field-emission electron source. The octupole ion trap, which confines the Yb ions, is formed from suspended electrodes on a number of stacked-up substrates. A microwave source excites a ground-state transition frequency of the Yb ions, with a frequency-doubled vertical-external-cavity laser (VECSEL) then exciting the Yb ions up to an excited state to produce fluorescent light which is used to tune the microwave source to the ground-state transition frequency, with the microwave source providing a precise frequency output for the ion clock.

Schwindt, Peter (Albuquerque, NM); Biedermann, Grant (Albuquerque, NM); Blain, Matthew G. (Albuquerque, NM); Stick, Daniel L. (Albuquerque, NM); Serkland, Darwin K. (Albuquerque, NM); Olsson, III, Roy H. (Albuquerque, NM)

2010-12-28T23:59:59.000Z

186

Argonne's GREET Model - Driving Transportation Solutions  

NLE Websites -- All DOE Office Websites (Extended Search)

Driving Driving Transportation Solutions Model Argonne's GREET D r i v i n g Tr a n s p o r t a t i o n S o l u t i o n s ARGONNE'S GREET Argonne's GREET model is widely recognized as the "gold standard" for evaluating and comparing the energy and environmental impacts of transportation fuels and advanced vehicles. The Greenhouse gases, Regulated Emissions, and Energy use in Transportation (GREET) model is a one-of-a-kind analytical tool that simulates the energy use and emissions output of various vehicle and fuel combinations. Sponsored by the U.S. Department of Energy's (DOE) Office of Energy Efficiency and Renewable Energy, the free software program gives researchers the unique ability to analyze technologies over an entire life cycle - from well to wheels and from raw material mining to vehicle disposal.

187

Integrated Inverter For Driving Multiple Electric Machines  

DOE Patents (OSTI)

An electric machine drive (50) has a plurality of inverters (50a, 50b) for controlling respective electric machines (57, 62), which may include a three-phase main traction machine (57) and two-phase accessory machines (62) in a hybrid or electric vehicle. The drive (50) has a common control section (53, 54) for controlling the plurality of inverters (50a, 50b) with only one microelectronic processor (54) for controlling the plurality of inverters (50a, 50b), only one gate driver circuit (53) for controlling conduction of semiconductor switches (S1-S10) in the plurality of inverters (50a, 50b), and also includes a common dc bus (70), a common dc bus filtering capacitor (C1) and a common dc bus voltage sensor (67). The electric machines (57, 62) may be synchronous machines, induction machines, or PM machines and may be operated in a motoring mode or a generating mode.

Su, Gui-Jia [Knoxville, TN; Hsu, John S [Oak Ridge, TN

2006-04-04T23:59:59.000Z

188

Heating and current drive systems for TPX  

SciTech Connect

The heating and current drive (H and CD) system proposed for the TPX tokamak will consist of ion cyclotron, neutral beam, and lower hybrid systems. It will have 17.5 MW of installed H and CD power initially, and can be upgraded to 45 MW. It will be used to explore advanced confinement and fully current-driven plasma regimes with pulse lengths of up to 1,000 s.

Swain, D.; Goranson, P. [Oak Ridge National Lab., TN (United States); Halle, A. von; Bernabei, S.; Greenough, N. [Princeton Univ., NJ (United States). Plasma Physics Lab.

1994-05-24T23:59:59.000Z

189

NEUTRONIC REACTOR CONTROL ROD DRIVE APPARATUS  

DOE Patents (OSTI)

ABS>A suspension mechanism between a vertically movable nuclear reactor control rod and a rod extension, which also provides information for the operator or an automatic control signal, is described. A spring connects the rod extension to a drive shift. The extension of the spring indicates whether (1) the rod is at rest on the reactor, (2) the rod and extension are suspended, or (3) the extension alone is suspended, the spring controlling a 3-position electrical switch.

Oakes, L.C.; Walker, C.S.

1959-12-15T23:59:59.000Z

190

Batteries for Electric Drive Vehicles - Status 2005  

Science Conference Proceedings (OSTI)

Commercial availability of advanced battery systems that meet the cost, performance, and durability requirements of electric drive vehicles (EDVs) is a crucial challenge to the growth of markets for these vehicles. Hybrid electric vehicles (HEVs) are a subset of the family of EDVs, which include battery electric vehicles (BEVs), power assist hybrid electric vehicles, plug-in hybrid electric vehicles (PHEVs), and fuel cell vehicles. This study evaluates the state of advanced battery technology, presents u...

2005-11-29T23:59:59.000Z

191

GenDrive Limited | Open Energy Information  

Open Energy Info (EERE)

GenDrive Limited GenDrive Limited Jump to: navigation, search Name GenDrive Limited Place Cambridge, United Kingdom Zip CB23 3GY Sector Renewable Energy, Solar, Wind energy Product Developing a range of grid-connected inverters, 'Plug & Play', for renewable energy (mostly solar and wind) systems. These are intended to improve ease of installation. Coordinates 43.003745°, -89.017499° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":43.003745,"lon":-89.017499,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

192

Energetic Drives LLC | Open Energy Information  

Open Energy Info (EERE)

Energetic Drives LLC Energetic Drives LLC Jump to: navigation, search Name Energetic Drives LLC Place Gresham, Oregon Zip 97030 Sector Efficiency, Wind energy Product Oregon-based engineering firm that conducts industrial efficiency improvements, as well as repair and maintenance work for grid-tie inverters and wind turbines ranging from 10kW to 1.2MW. Coordinates 44.84866°, -88.786959° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":44.84866,"lon":-88.786959,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

193

Quasi-spherical direct drive fusion.  

SciTech Connect

The authors present designs of quasi-spherical direction drive z-pinch loads for machines such as ZR at 28 MA load current with a 150 ns implosion time (QSDDI). A double shell system for ZR has produced a 2D simulated yield of 12 MJ, but the drive for this system on ZR has essentially no margin. A double shell system for a 56 MA driver at 150 ns implosion has produced a simulated yield of 130 MJ with considerable margin in attaining the necessary temperature and density-radius product for ignition. They also represent designs for a magnetically insulated current amplifier, (MICA), that modify the attainable ZR load current to 36 MA with a 28 ns rise time. The faster pulse provided by a MICA makes it possible to drive quasi-spherical single shell implosions (QSDD2). They present results from 1D LASNEX and 2D MACH2 simulations of promising low-adiabat cryogenic QSDD2 capsules and 1D LASNEX results of high-adiabat cryogenic QSDD2 capsules.

VanDevender, J. Pace; Abbott, Lucas M.; Langston, William L.; McDaniel, Dillon Heirman; Nash, Thomas J.; Roderick, Norman Frederick; Silva, M.

2007-01-01T23:59:59.000Z

194

Alternative Fuels Data Center: Mississippi Laws and Incentives for Driving  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Mississippi Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Mississippi Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Mississippi Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Mississippi Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Mississippi Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Mississippi Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type

195

Secrets of the Motor That Drives Archaea Revealed  

NLE Websites -- All DOE Office Websites (Extended Search)

Secrets of the Motor That Drives Archaea Revealed Secrets of the Motor That Drives Archaea Revealed Print Thursday, 14 February 2013 00:00 An international team led by John Tainer...

196

Alternative Fuels Data Center: Connecticut Laws and Incentives for Driving  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Connecticut Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Connecticut Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Connecticut Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Connecticut Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Connecticut Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Connecticut Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type

197

Alternative Fuels Data Center: Washington Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Washington Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Washington Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Washington Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Washington Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Washington Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Washington Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type

198

Alternative Fuels Data Center: California Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: California Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: California Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: California Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: California Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: California Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: California Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type

199

Alternative Fuels Data Center: Pennsylvania Laws and Incentives for Driving  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Pennsylvania Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Pennsylvania Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Pennsylvania Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Pennsylvania Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Pennsylvania Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Pennsylvania Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type

200

DIRECT-DRIVE AND EDDY-CURRENT SEPTUM MAGNETS  

NLE Websites -- All DOE Office Websites (Extended Search)

laminations and leakage fields are summarized in Appendices A and B, respectively. 2. Direct-Drive Septum For the upper half of the 2-D direct-drive septum magnet in Fig. 1 the...

Note: This page contains sample records for the topic "frequency drives vfds" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Vehicle Technologies Office: Fact #420: April 17, 2006 Driving...  

NLE Websites -- All DOE Office Websites (Extended Search)

0: April 17, 2006 Driving Less Due to Gasoline Prices to someone by E-mail Share Vehicle Technologies Office: Fact 420: April 17, 2006 Driving Less Due to Gasoline Prices on...

202

Driving Battery Production in Ohio | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Driving Battery Production in Ohio Driving Battery Production in Ohio November 1, 2010 - 6:19pm Addthis Randy Turk, Elyria Site Manager; Rep. Betty Sutton (OH); Frank Bozich,...

203

Driving Home to a Clean Energy Future | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Driving Home to a Clean Energy Future Driving Home to a Clean Energy Future June 7, 2011 - 10:57am Addthis Eric Barendsen Energy Technology Program Specialist, Office of Energy...

204

Do You Drive a Hybrid Electric Vehicle? | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Drive a Hybrid Electric Vehicle? Do You Drive a Hybrid Electric Vehicle? July 9, 2009 - 1:34am Addthis In Tuesday's entry, Francis X. Vogel from the Wisconsin Clean Cities...

205

NREL: News Feature - NREL Drives Toward the Future with Fuel...  

NLE Websites -- All DOE Office Websites (Extended Search)

Drives Toward the Future with Fuel Cell EVs June 21, 2013 A hydrogen fuel cell powered Toyota sport utility vehicle emblazoned with an NREL logo drives past a building on the NREL...

206

Personalized driving behavior monitoring and analysis for emerging hybrid vehicles  

Science Conference Proceedings (OSTI)

Emerging electric-drive vehicles, such as hybrid electric vehicles (HEVs) and plug-in HEVs (PHEVs), hold the potential for substantial reduction of fuel consumption and greenhouse gas emissions. User driving behavior, which varies from person ...

Kun Li; Man Lu; Fenglong Lu; Qin Lv; Li Shang; Dragan Maksimovic

2012-06-01T23:59:59.000Z

207

Optimization of Driving Styles for Fuel Economy Improvement  

SciTech Connect

Modern vehicles have sophisticated electronic control units, particularly to control engine operation with respect to a balance between fuel economy, emissions, and power. These control units are designed for specific driving conditions and testing. However, each individual driving style is different and rarely meets those driving conditions. In the research reported here we investigate those driving style factors that have a major impact on fuel economy. An optimization framework is proposed with the aim of optimizing driving styles with respect to these driving factors. A set of polynomial metamodels are constructed to reflect the responses produced by changes of the driving factors. Then we compare the optimized driving styles to the original ones and evaluate the efficiency and effectiveness of the optimization formulation.

Malikopoulos, Andreas [ORNL; Aguilar, Juan P. [Georgia Institute of Technology

2012-01-01T23:59:59.000Z

208

Alternative Fuels Data Center: Fuel-Efficient Driving Training  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Fuel-Efficient Driving Training to someone by E-mail Share Alternative Fuels Data Center: Fuel-Efficient Driving Training on Facebook Tweet about Alternative Fuels Data Center:...

209

Electricity use by machine drives varies significantly by ...  

U.S. Energy Information Administration (EIA)

Greenhouse gas data, voluntary report- ing, electric power plant emissions. ... Fossil fuels may be used to drive turbines, reciprocating engines, ...

210

Clean Cities 2011 Stakeholders Summit - Electric Drive Vehicles...  

NLE Websites -- All DOE Office Websites (Extended Search)

Department of Energy's Vehicle Technologies Program Vehicle Technologies Program - Clean Cities 2011 Stakeholders Summit - Electric Drive Vehicles and Charging Infrastructure...

211

DC Drive Ride-Through Technology Alternatives and Development  

Science Conference Proceedings (OSTI)

Adjustable speed drive (ASD) ride-through issues have caused increased concerns due to drive susceptibility to power disturbances and the costly results of process disruptions. Losses incurred due to DC drive trips can be avoided for critical production processes by employing ride-through alternatives. The purpose of this study is to determine the DC drive ride-through requirements of industrial customers and match those ride-through needs with possible solutions.

1998-12-19T23:59:59.000Z

212

Electrical Motor Drive Apparatus and Method - Energy Innovation Portal  

Vehicles and Fuels Industrial Technologies Electrical ... Auto manufacturers ; Industrial motor drive manufacturers; Patents and Patent Applications. ID Number.

213

PHEV Energy Storage and Drive Cycle Impacts (Presentation)  

DOE Green Energy (OSTI)

Plug-in Hybrid vehicles energy storage and drive cycle impacts, presented at the 7th Advanced Automotive Battery Conference.

Markel, T.; Pesaran, A.

2007-05-17T23:59:59.000Z

214

New aggregation programs drive consumer participation in Illinois ...  

U.S. Energy Information Administration (EIA)

New aggregation programs drive consumer participation ... Ameren Energy Marketing, Direct Energy ... (buying their electricity from renewable generators) ...

215

CONTROL ROD DRIVE MECHANISM FOR A NUCLEAR REACTOR  

DOE Patents (OSTI)

A lead-screw-type control rod drive featuring an electric motor and a fluid motor arranged to provide a selectably alternative driving means is described. The electric motor serves to drive the control rod slowly during normal operation, while the fluid motor, assisted by an automatic declutching of the electric motor, affords high-speed rod insertion during a scram. (AEC)

Hawke, B.C.; Liederbach, F.J.; Lones, W.

1963-05-14T23:59:59.000Z

216

Upgrade of the Drive LINAC for the AWA Facility Dielectric Two-Beam Accelerator  

SciTech Connect

We report on the design of a seven-cell, standing-wave, 1.3-GHz rf cavity and the associated beam dynamics studies for the upgrade of the drive beamline LINAC at the Argonne Wakefield Accelerator (AWA) facility. The LINAC design is a compromise between single-bunch operation (100 nC {at} 75 MeV) and minimization of the energy droop along the bunch train during bunch-train operation. The 1.3-GHz drive bunch-train target parameters are 75 MeV, 10-20-ns macropulse duration, and 16 x 60 nC microbunches; this is equivalent to a macropulse current and beam power of 80 A and 6 GW, respectively. Each LINAC structure accelerates approximately 1000 nC in 10 ns by a voltage of 11 MV at an rf power of 10 MW. Due to the short bunch-train duration desired ({approx}10 ns) and the existing frequency (1.3 GHz), compensation of the energy droop along the bunch train is difficult to accomplish by means of the two standard techniques: time-domain or frequency-domain beam loading compensation. Therefore, to minimize the energy droop, our design is based on a large stored energy rf cavity. In this paper, we present our rf cavity optimization method, detailed rf cavity design, and beam dynamics studies of the drive beamline.

Power, John; /Argonne; Conde, Manoel; /Argonne; Gai, Wei; /Argonne; Li, Zenghai; /SLAC; Mihalcea, Daniel; /Northern Illinois U.

2012-07-02T23:59:59.000Z

217

Graphene Frequency Multipliers  

E-Print Network (OSTI)

In this letter, the ambipolar transport properties of graphene flakes have been used to fabricate full-wave signal rectifiers and frequency-doubling devices. By correctly biasing an ambipolar graphene field-effect transistor ...

Wang, Han

218

High frequency breakdown voltage  

SciTech Connect

This report contains information about the effect of frequency on the breakdown voltage of an air gap at standard pressure and temperature, 76 mm Hg and O{degrees}C, respectively. The frequencies of interest are 47 MHz and 60 MHz. Additionally, the breakdown in vacuum is briefly considered. The breakdown mechanism is explained on the basis of collision and ionization. The presence of the positive ions produced by ionization enhances the field in the gap, and thus determines the breakdown. When a low-frequency voltage is applied across the gap, the breakdown mechanism is the same as that caused by the DC or static voltage. However, when the frequency exceeds the first critical value f{sub c}, the positive ions are trapped in the gap, increasing the field considerably. This makes the breakdown occur earlier; in other words, the breakdown voltage is lowered. As the frequency increases two decades or more, the second critical frequency, f{sub ce}, is reached. This time the electrons start being trapped in the gap. Those electrons that travel multiple times across the gap before reaching the positive electrode result in an enormous number of electrons and positive ions being present in the gap. The result is a further decrease of the breakdown voltage. However, increasing the frequency does not decrease the breakdown voltage correspondingly. In fact, the associated breakdown field intensity is almost constant (about 29 kV/cm).The reason is that the recombination rate increases and counterbalances the production rate, thus reducing the effect of the positive ions` concentration in the gap. The theory of collision and ionization does not apply to the breakdown in vacuum. It seems that the breakdown in vacuum is primarily determined by the irregularities on the surfaces of the electrodes. Therefore, the effect of frequency on the breakdown, if any, is of secondary importance.

Chu, Thanh Duy

1992-03-01T23:59:59.000Z

219

Oscillatory nonhmic current drive for maintaining a plasma current  

DOE Patents (OSTI)

Apparatus and method of the invention maintain a plasma current with an oscillatory nonohmic current drive. Each cycle of operation has a generation period in which current driving energy is applied to the plasma, and a relaxation period in which current driving energy is removed. Plasma parameters, such as plasma temperature or plasma average ionic charge state, are modified during the generation period so as to oscillate plasma resistivity in synchronism with the application of current driving energy. The invention improves overall current drive efficiencies.

Fisch, Nathaniel J. (Princeton, NJ)

1986-01-01T23:59:59.000Z

220

Oscillatory nonohomic current drive for maintaining a plasma current  

DOE Patents (OSTI)

Apparatus and methods are described for maintaining a plasma current with an oscillatory nonohmic current drive. Each cycle of operation has a generation period in which current driving energy is applied to the plasma, and a relaxation period in which current driving energy is removed. Plasma parameters, such as plasma temperature or plasma average ionic charge state, are modified during the generation period so as to oscillate plasma resistivity in synchronism with the application of current driving energy. The invention improves overall current drive efficiencies.

Fisch, N.J.

1984-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "frequency drives vfds" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

High efficiency compressor uses direct drive  

Science Conference Proceedings (OSTI)

This article focuses on the high efficiency of a compressor which uses only direct drive. This compressor was evaluated by judges and won Top Honors in the 1982 Chemical Processing magazine Vaaler Awards category of compressors, blowers and fans. Applications for the compressor include combustion air, process air and gas booster, incineration, fermentation, and vacuum filtration systems. In addition to a 50% reduction in power comsumption, the use of the compressor eliminated the need for a water seal, thus saving 200 gpm of water. And, since the elimination of the water seal reduced the necessary downtime for seal maintenance, on stream time was increased by 5%.

Not Available

1982-11-01T23:59:59.000Z

222

NREL: Fleet Test and Evaluation - Hybrid Electric Drive Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Hybrid Electric Drive Systems Hybrid Electric Drive Systems The Fleet Test and Evaluation Team conducts performance evaluations of hybrid electric drive systems in fleets of delivery vehicles and transit buses. Hybrid electric drive systems combine a primary power source, an energy storage system, and an electric motor to achieve a combination of emissions, fuel economy, and range benefits unattainable with any of these technologies alone. Hybrid electric drive systems use less petroleum-based fuel and capture energy created during breaking and idling. This collected energy is used to propel the vehicle during normal drive cycles. The batteries supply additional power for acceleration and hill climbing. Learn more about the team's hybrid electric drive system evaluations: Delivery Vehicles

223

Vehicle Technologies Office: Materials for Hybrid and Electric Drive  

NLE Websites -- All DOE Office Websites (Extended Search)

for Hybrid and for Hybrid and Electric Drive Systems to someone by E-mail Share Vehicle Technologies Office: Materials for Hybrid and Electric Drive Systems on Facebook Tweet about Vehicle Technologies Office: Materials for Hybrid and Electric Drive Systems on Twitter Bookmark Vehicle Technologies Office: Materials for Hybrid and Electric Drive Systems on Google Bookmark Vehicle Technologies Office: Materials for Hybrid and Electric Drive Systems on Delicious Rank Vehicle Technologies Office: Materials for Hybrid and Electric Drive Systems on Digg Find More places to share Vehicle Technologies Office: Materials for Hybrid and Electric Drive Systems on AddThis.com... Just the Basics Hybrid & Vehicle Systems Energy Storage Advanced Power Electronics & Electrical Machines

224

Better Buildings Neighborhood Program: Energy Upgrade California Drives  

NLE Websites -- All DOE Office Websites (Extended Search)

Energy Upgrade Energy Upgrade California Drives Demand From Behind the Wheel to someone by E-mail Share Better Buildings Neighborhood Program: Energy Upgrade California Drives Demand From Behind the Wheel on Facebook Tweet about Better Buildings Neighborhood Program: Energy Upgrade California Drives Demand From Behind the Wheel on Twitter Bookmark Better Buildings Neighborhood Program: Energy Upgrade California Drives Demand From Behind the Wheel on Google Bookmark Better Buildings Neighborhood Program: Energy Upgrade California Drives Demand From Behind the Wheel on Delicious Rank Better Buildings Neighborhood Program: Energy Upgrade California Drives Demand From Behind the Wheel on Digg Find More places to share Better Buildings Neighborhood Program: Energy Upgrade California Drives Demand From Behind the Wheel on

225

Spectral effects on fast wave core heating and current drive  

Science Conference Proceedings (OSTI)

Recent results obtained with high harmonic fast wave (HHFW) heating and current drive (CD) on NSTX strongly support the hypothesis that the onset of perpendicular fast wave propagation right at or very near the launcher is a primary cause for a reduction in core heating efficiency at long wavelengths that is also observed in ICRF heating experiments in numerous tokamaks. A dramatic increase in core heating efficiency was first achieved in NSTX L-mode helium majority plasmas when the onset for perpendicular wave propagation was moved away from the antenna and nearby vessel structures. Efficient core heating in deuterium majority L-mode and H-mode discharges, in which the edge density is typically higher than in comparable helium majority plasmas, was then accomplished by reducing the edge density in front of the launcher with lithium conditioning and avoiding operational points prone to instabilities. These results indicate that careful tailoring of the edge density profiles in ITER should be considered to limit radio frequency (rf) power losses to the antenna and plasma facing materials. Finally, in plasmas with reduced rf power losses in the edge regions, the first direct measurements of HHFW CD were obtained with the motional Stark effect (MSE) diagnostic. The location and radial dependence of HHFW CD measured by MSE are in reasonable agreement with predictions from both full wave and ray tracing simulations.

Phillips, Cynthia [Princeton Plasma Physics Laboratory (PPPL); Bell, R. E. [Princeton Plasma Physics Laboratory (PPPL); Berry, Lee [Oak Ridge National Laboratory (ORNL); Jaeger, Erwin Frederick [ORNL; Ryan, Philip Michael [ORNL; Wilgen, John B [ORNL

2009-01-01T23:59:59.000Z

226

OMEGA polar-drive target designs  

SciTech Connect

Low-adiabat polar-drive (PD) [Skupsky et al., Phys. Plasmas 11, 2763 (2004)] implosion designs for the OMEGA [Boehly et al., Opt. Commun. 133, 495 (1997)] laser are described. These designs for cryogenic deuterium-tritium and warm plastic shells use a temporal laser pulse shape with three pickets followed by a main pulse [Goncharov et al., Phys. Rev. Lett. 104, 165001 (2010)]. The designs are at two different on-target laser intensities, with different in-flight aspect ratios (IFARs). These designs permit studies of implosion energetics and target performance closer to ignition-relevant intensities ({approx}7 Multiplication-Sign 10{sup 14} W/cm{sup 2} at the quarter-critical surface, where nonlocal heat conduction and laser-plasma interactions can play an important role) but at lower values of IFAR {approx} 22 or at lower intensity ({approx}3 Multiplication-Sign 10{sup 14} W/cm{sup 2}) but at a higher IFAR (IFAR {approx} 32, where shell instability can play an important role). PD geometry requires repointing of laser beams to improve shell symmetry. The higher-intensity designs optimize target performance by repointing beams to a lesser extent, compensating for the reduced equatorial drive by increasing the energies of the repointed beams. They also use custom beam profiles that improve equatorial illumination at the expense of irradiation at higher latitudes. These latter designs will be studied when new phase plates for the OMEGA Laser System, corresponding to the custom beam profiles, are obtained.

Radha, P. B.; Marozas, J. A.; Marshall, F. J.; Shvydky, A.; Collins, T. J. B.; Goncharov, V. N.; McKenty, P. W.; Sangster, T. C.; Skupsky, S. [Laboratory for Laser Energetics, University of Rochester, 250 E. River Road, Rochester, New York 14623 (United States); McCrory, R. L.; Meyerhofer, D. D. [Laboratory for Laser Energetics, University of Rochester, 250 E. River Road, Rochester, New York 14623 (United States); Department of Mechanical Engineering and Department of Physics, University of Rochester, 250 E. River Road, Rochester, New York 14623 (United States)

2012-08-15T23:59:59.000Z

227

Why inverse document frequency?  

Science Conference Proceedings (OSTI)

Inverse Document Frequency (IDF) is a popular measure of a word's importance. The IDF invariably appears in a host of heuristic measures used in information retrieval. However, so far the IDF has itself been a heuristic. In this paper, we show IDF to ...

Kishore Papineni

2001-06-01T23:59:59.000Z

228

DRIVE(tm) Mobile App | Open Energy Information  

Open Energy Info (EERE)

DRIVE(tm) Mobile App DRIVE(tm) Mobile App Jump to: navigation, search Tool Summary LAUNCH TOOL Name: DRIVE(tm) Mobile App Agency/Company /Organization: Apps for Energy Challenge Participant Sector: Energy Resource Type: Application prototype User Interface: Website, Mobile Device Website: ikehu.cloudapp.net/Drive OpenEI Keyword(s): Challenge Generated, Green Button Apps Language: English References: Apps for Energy[1] The DRIVE(tm) System is a patent-pending solution that provides incentives to residential customers to reduce power consumption during peak and critical peak times. It rewards desired consumer behavior with points or airline miles. The DRIVE(tm) System is a patent-pending solution that provides incentives to residential customers to reduce power consumption during peak and

229

Traction drive automatic transmission for gas turbine engine driveline  

SciTech Connect

A transaxle driveline for a wheeled vehicle has a high speed turbine engine and a torque splitting gearset that includes a traction drive unit and a torque converter on a common axis transversely arranged with respect to the longitudinal centerline of the vehicle. The drive wheels of the vehicle are mounted on a shaft parallel to the turbine shaft and carry a final drive gearset for driving the axle shafts. A second embodiment of the final drive gearing produces an overdrive ratio between the output of the first gearset and the axle shafts. A continuously variable range of speed ratios is produced by varying the position of the drive rollers of the traction unit. After starting the vehicle from rest, the transmission is set for operation in the high speed range by engaging a first lockup clutch that joins the torque converter impeller to the turbine for operation as a hydraulic coupling.

Carriere, Donald L. (Livonia, MI)

1984-01-01T23:59:59.000Z

230

Direct Drive Systems DDS | Open Energy Information  

Open Energy Info (EERE)

Systems DDS Systems DDS Jump to: navigation, search Name Direct Drive Systems (DDS) Place Cerritos, California Zip CA 90703 Product Manufactures high speed, permanent magnet (PM), high-power motors, generators and power electronics. Coordinates 33.868545°, -118.063704° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":33.868545,"lon":-118.063704,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

231

Driving Membrane Curvature | Advanced Photon Source  

NLE Websites -- All DOE Office Websites (Extended Search)

Unlocking the Nanoscale Secrets of Bird-Feather Colors Unlocking the Nanoscale Secrets of Bird-Feather Colors An Unlikely Route to Ferroelectricity How to Make a Splash Pressure-Tuning the Quantum Phase Transition in a Model 2-D Magnet Reappearing Superconductivity Surprises Scientists Science Highlights Archives: 2013 | 2012 | 2011 | 2010 2009 | 2008 | 2007 | 2006 2005 | 2004 | 2003 | 2002 2001 | 2000 | 1998 | Subscribe to APS Science Highlights rss feed Driving Membrane Curvature JUNE 14, 2012 Bookmark and Share Model of conformational change in the HIV gp41 fusion protein induced by cholesterol composition of lipid monolayers. In biological systems, membranes are as important as water. They form the barrier between the inner world, within our cells, where we perform the chemical reactions of life, and the outside environment.

232

Kinetics driving high-density chlorine plasmas  

Science Conference Proceedings (OSTI)

A simple fluid model was developed in order to investigate the driving kinetics of neutral and charged species in high-density chlorine plasmas. It was found that the dissociation degree of Cl{sub 2} molecules is directly linked to the power balance of the discharge which controls the electron density. The model was also used to identify those reactions that could be neglected in the particle balance of charged species and those that must be included. Our results further indicate that diffusion losses need to be considered up to a pressure that depends on magnetic-field intensity and reactor aspect ratio. Finally, it is shown that the dominant charged carriers are linked to the dissociation level of Cl{sub 2} molecules.

Stafford, L.; Margot, J.; Vidal, F.; Chaker, M.; Giroux, K.; Poirier, J.-S.; Quintal-Leonard, A.; Saussac, J. [Department de physique, Universite de Montreal, Montreal, Quebec (Canada); INRS-Energie, Materiaux et Telecommunications, Varennes, Quebec (Canada); Department de physique, Universite de Montreal, Montreal, Quebec (Canada)

2005-09-15T23:59:59.000Z

233

A frequency domain model for 3 kV dc traction dc-side resonance identification  

SciTech Connect

Frequency-dependent effects in railway traction power systems arise from the impedance of substation and locomotive line filters and the traction line. Harmonic noise from traction drives and substations can excite resonances and produce overcurrent or overvoltage conditions at critical points in the network. In this paper, the harmonic feeding impedances of a 3 kV DC traction system seen from the rectifier substation, locomotive drive converter and pantograph terminals are presented. Several substation and locomotive filters are considered with a frequency-dependent traction line. Resonances attributed to the substation filter, locomotive filter and traction line are separate and distinct, the line introducing poles and zeros in the audio frequency (AF) range which vary in frequency and magnitude with locomotive position.

Hill, R.J. [Univ. of Bath (United Kingdom). School of Electronic and Electrical Engineering; Fracchia, M.; Pozzobon, P.; Sciutto, G. [Univ. degli Studi di Genova (Italy). Dipt. di Ingegneria Elettrica

1995-08-01T23:59:59.000Z

234

Wind turbine ring/shroud drive system - Energy Innovation Portal  

A wind turbine capable of driving multiple electric generators having a ring or shroud structure for reducing blade root bending moments, hub loads, blade fastener ...

235

Combined Electric Machine and Current Source Inverter Drive System  

This integration of these two ORNL ... elimination of several components reduces drive system cost, weight, and volume. ... Energy and Transportation Science Division

236

Electrical motor/generator drive apparatus and method - Energy ...  

The present disclosure includes electrical motor/generator drive systems and methods that significantly reduce inverter direct-current (DC) bus ripple currents and ...

237

Battery Electric Vehicle Driving and Charging Behavior Observed...  

NLE Websites -- All DOE Office Websites (Extended Search)

Battery Electric Vehicle Driving and Charging Behavior Observed Early in The EV Project The EV Project John Smart, Idaho National Laboratory Stephen Schey, ECOtality North America...

238

Combination spindle-drive system for high precision machining  

DOE Patents (OSTI)

A combination spindle-drive is provided for fabrication of optical quality surface finishes. Both the spindle-and-drive utilize the spindle bearings for support, thereby removing the conventional drive-means bearings as a source of vibration. An airbearing spindle is modified to carry at the drive end a highly conductive cup-shaped rotor which is aligned with a stationary stator to produce torque in the cup-shaped rotor through the reaction of eddy currents induced in the rotor. This arrangement eliminates magnetic attraction forces and all force is in the form of torque on the cup-shaped rotor.

Gerth, Howard L. (Knoxville, TN)

1977-07-26T23:59:59.000Z

239

Combined Electric Machine and Current Source Inverter Drive System ...  

Wind power generators ; Industrial power generators; More Information John S. Hsu. Combined Electric Machine and Current Source Invertor Drive System, U.S ...

240

Electric vehicle drive train with direct coupling transmission ...  

An electric vehicle drive train includes an electric motor and an associated speed sensor, a transmission operable in a speed reduction mode or a direct coupled mode ...

Note: This page contains sample records for the topic "frequency drives vfds" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Direct drive field actuator motors - Energy Innovation Portal  

A positive-drive field actuator motor including a stator carrying at least one field actuator which changes in dimension responsive to application of an energy field ...

242

EA-1851: Delphi Automotive Systems Electric Drive Vehicle Battery...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

You are here Home EA-1851: Delphi Automotive Systems Electric Drive Vehicle Battery and Component Manufacturing Initiative EA-1851: Delphi Automotive Systems Electric...

243

Design of Electric Drive Vehicle Batteries for Long Life and...  

NLE Websites -- All DOE Office Websites (Extended Search)

Kandler Smith, NREL EDV Battery Robust Design - 1 Design of Electric Drive Vehicle Batteries for Long Life and Low Cost Robustness to Geographic and Consumer-Usage Variation...

244

EA-1722: Toxco, Inc. Electric Drive Vehicle Battery and Component...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Other Agencies You are here Home EA-1722: Toxco, Inc. Electric Drive Vehicle Battery and Component Manufacturing Initiative, Lancaster, OH EA-1722: Toxco, Inc. Electric...

245

Electrical motor/generator drive apparatus and method  

SciTech Connect

The present disclosure includes electrical motor/generator drive systems and methods that significantly reduce inverter direct-current (DC) bus ripple currents and thus the volume and cost of a capacitor. The drive methodology is based on a segmented drive system that does not add switches or passive components but involves reconfiguring inverter switches and motor stator winding connections in a way that allows the formation of multiple, independent drive units and the use of simple alternated switching and optimized Pulse Width Modulation (PWM) schemes to eliminate or significantly reduce the capacitor ripple current.

Su, Gui Jia

2013-02-12T23:59:59.000Z

246

High Temperature Universal Silicon on Insulator (SOI) Gate Drive  

higher current drive, on-chip regulation capacitors, and more space efficient and robust on-chip layout. ... •Development of high temperature galvanic isolation

247

Gasoline product supplied may reflect snowstorm effects on driving ...  

U.S. Energy Information Administration (EIA)

... driving that does not take place due to poor road conditions is ... which may have contributed to the large weekly gasoline stock builds seen in January ...

248

ELECTRICAL MOTOR/GENERATOR DRIVE APPARATUS AND METHOD - Energy ...  

The present disclosure includes electrical motor/generator drive systems and methods that significantly reduce inverter direct-current (DC) bus ripple ...

249

Factors driving wind power development in the United States  

E-Print Network (OSTI)

s Largest Purchase of Wind Power,” September 17, 2001.FACTORS DRIVING WIND POWER DEVELOPMENT IN THE UNITED STATESthe United States third in wind power capacity globally,

Bird, Lori A.; Parsons, Brian; Gagliano, Troy; Brown, Matthew H.; Wiser, Ryan H.; Bolinger, Mark

2003-01-01T23:59:59.000Z

250

Formation of electron bunches with tailored current profiles using multi-frequency linacs  

SciTech Connect

Tailoring an electron bunch with specific current profile can provide substantial enhancement of the transformer ratio in beam-driven acceleration methods. We present a method relying on the use of a linac with accelerating sections operating at different frequencies followed by a magnetic bunch compressor. The experimental verfification of the technique in a two-frequency linac is presented. The compatibility of the proposed technique with the formation and acceleration of a drive and witness bunches is numerically demonstrated.

Piot, P.; Behrens, C.; Gerth, C.; Lemery, F.; Mihalcea, D.; Stoltz, P. [Northern Illinois Center for Accelerator and Detector Development and Department of Physics, Northern Illinois University, DeKalb, IL 60115 (United States) and Accelerator Physics Center, Fermi National Accelerator Laboratory, Batavia, IL 60510 (United States); Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85 D-22607 Hamburg (Germany); Northern Illinois Center for Accelerator and Detector Development and Department of Physics, Northern Illinois University, DeKalb, IL 60115 (United States); Tech-X Corporation, Boulder, CO 80303 (United States)

2012-12-21T23:59:59.000Z

251

Argonne CNM News: Frequency stabilization in nonlinear micromechanical  

NLE Websites -- All DOE Office Websites (Extended Search)

Frequency Stabilization in Nonlinear Micromechanical Oscillators Frequency Stabilization in Nonlinear Micromechanical Oscillators SEM image of one resonator and finite-element simulations of the dynamic deformation characteristics of the coupled vibrational modes SEM image (center) of one resonator and finite-element simulations of the dynamic deformation characteristics of the coupled vibrational modes. The lengths of the three interconnected beams, between the comb-drive electrodes, range from 10 to 500 µm. Using Center for Nanoscale Materials (CNM) expertise in the design and fabrication of micro- and nanoscale devices, a new strategy for engineering low-frequency noise oscillators capitalizes on the intrinsic nonlinear phenomena of micro- and nanomechanical resonators. A fundamental limitation of such resonators was addressed by a team of researchers from the

252

High frequency reference electrode  

DOE Patents (OSTI)

A high frequency reference electrode for electrochemical experiments comprises a mercury-calomel or silver-silver chloride reference electrode with a layer of platinum around it and a layer of a chemically and electrically resistant material such as TEFLON around the platinum covering all but a small ring or halo'' at the tip of the reference electrode, adjacent to the active portion of the reference electrode. The voltage output of the platinum layer, which serves as a redox electrode, and that of the reference electrode are coupled by a capacitor or a set of capacitors and the coupled output transmitted to a standard laboratory potentiostat. The platinum may be applied by thermal decomposition to the surface of the reference electrode. The electrode provides superior high-frequency response over conventional electrodes.

Kronberg, J.W.

1991-03-05T23:59:59.000Z

253

High frequency reference electrode  

DOE Patents (OSTI)

A high frequency reference electrode for electrochemical experiments comprises a mercury-calomel or silver-silver chloride reference electrode with a layer of platinum around it and a layer of a chemically and electrically resistant material such as TEFLON around the platinum covering all but a small ring or halo' at the tip of the reference electrode, adjacent to the active portion of the reference electrode. The voltage output of the platinum layer, which serves as a redox electrode, and that of the reference electrode are coupled by a capacitor or a set of capacitors and the coupled output transmitted to a standard laboratory potentiostat. The platinum may be applied by thermal decomposition to the surface of the reference electrode. The electrode provides superior high-frequency response over conventional electrodes. 4 figs.

Kronberg, J.W.

1994-05-31T23:59:59.000Z

254

High frequency reference electrode  

DOE Patents (OSTI)

A high frequency reference electrode for electrochemical experiments comprises a mercury-calomel or silver-silver chloride reference electrode with a layer of platinum around it and a layer of a chemically and electrically resistant material such as TEFLON around the platinum covering all but a small ring or "halo" at the tip of the reference electrode, adjacent to the active portion of the reference electrode. The voltage output of the platinum layer, which serves as a redox electrode, and that of the reference electrode are coupled by a capacitor or a set of capacitors and the coupled output transmitted to a standard laboratory potentiostat. The platinum may be applied by thermal decomposition to the surface of the reference electrode. The electrode provides superior high-frequency response over conventional electrodes.

Kronberg, James W. (Aiken, SC)

1994-01-01T23:59:59.000Z

255

Analysis of national pay-as-you-drive insurance systems and other variable driving charges  

SciTech Connect

Under Pay as You Drive insurance (PAYD), drivers would pay part of their automobile insurance premium as a per-gallon surcharge every time they filled their gas tank. By transfering a portion of the cost of owning a vehicle from a fixed cost to a variable cost, PAYD would discourage driving. PAYD has been proposed recently in California as a means of reforming how auto insurance is provided. PAYD proponents claim that, by forcing drivers to purchase at least part of their insurance every time they refuel their car, PAYD would reduce or eliminate the need for uninsured motorist coverage. Some versions of PAYD proposed in California have been combined with a no-fault insurance system, with the intention of further reducing premiums for the average driver. Other states have proposed PAYD systems that would base insurance premiums on annual miles driven. In this report we discuss some of the qualitative issues surrounding adoption of PAYD and other policies that would convert other fixed costs of driving (vehicle registration, safety/emission control system inspection, and driver license renewal) to variable costs. We examine the effects of these policies on two sets of objectives: objectives related to auto insurance reform, and those related to reducing fuel consumption, CO{sub 2} emissions, and vehicle miles traveled. We pay particular attention to the first objective, insurance reform, since this has generated the most interest in PAYD to date, at least at the state level.

Wenzel, T.

1995-07-01T23:59:59.000Z

256

Control algorithm for the inverter fed induction motor drive with DC current feedback loop based on principles of the vector control  

Science Conference Proceedings (OSTI)

This paper brings out a control algorithm for VSI fed induction motor drives based on the converter DC link current feedback. It is shown that the speed and flux can be controlled over the wide speed and load range quite satisfactorily for simpler drives. The base commands of both the inverter voltage and frequency are proportional to the reference speed, but each of them is further modified by the signals derived from the DC current sensor. The algorithm is based on the equations well known from the vector control theory, and is aimed to obtain the constant rotor flux and proportionality between the electrical torque, the slip frequency and the active component of the stator current. In this way, the problems of slip compensation, Ri compensation and correction of U/f characteristics are solved in the same time. Analytical considerations and computer simulations of the proposed control structure are in close agreement with the experimental results measured on a prototype drive.

Vuckovic, V.; Vukosavic, S. (Electrical Engineering Inst. Nikola Tesla, Viktora Igoa 3, Belgrade, 11000 (Yugoslavia))

1992-01-01T23:59:59.000Z

257

Development of a Monitoring and Verification (M&V) Plan and Baseline for the Fort Hood ESPC Project  

E-Print Network (OSTI)

Fort Hood has selected an Energy Services Performance Contract (ESPC) contractor to help achieve its energy reduction goals as mandated by Executive Order. This ESPC is expected to be a $3.8 million, 20 year contract, which includes five primary types of Energy Conservation Measures (ECMs) in 56 buildings, and includes boiler insulation, control system upgrades, vending machine controls, cooling tower variable frequency drives (VFDs), and lighting retrofits. The plan of action for the ESPC includes cost effective M&V, using IPMVP Options B and C for the first two years after the retrofits are installed, and Option A combined with annual performance verification for the remainder of the contract. This paper discusses the development the Measurement and Verification (M&V) Plan for the Fort Hood Energy Services Performance Contract, and includes results of the baseline calculations (Haberl et al. 2002, 2003b).

Haberl, J. S.; Liu, Z.; Baltazar-Cervantes, J. C.; Lynn, B.; Underwood, D.

2004-01-01T23:59:59.000Z

258

Evaluation of half wave induction motor drive for use in passenger vehicles. Final report  

SciTech Connect

This report describes research performed to devise and design a lower cost inverter-induction motor drive for electrical propulsion of passenger vehicles. A two-phase inverter-motor system is recommended. It is predicted to provide comparable vehicle performance, improved reliability and nearly a 10% cost advantage for a high production vehicle because of the reduction in total parts count, decreased total rating of the power semiconductor switches and somewhat simpler control hardware compared to the conventional three-phase bridge inverter-motor drive system. The major disadvantages of the two-phase inverter-motor drive are that the tow-phase motor is larger and more expensive than a three-phase machine, the design of snubbers for the power switches is difficult because motor lead and bifilar winding leakage inductances produce higher transient voltages, and the torque pulsations are relatively large because of the necessity to limit the inverter switching frequency to achieve high efficiency. An actuall model of the two-phase system must be constructed and evaluated. The most challenging engineering design task will be to design the inverter, motor and snubber circuits to minimize transient voltages with high system efficiency.

Hoft, R.G.; Kawamura, A.; Goodarzi, A.; Yang, G.Q.; Erickson, C.L.

1985-05-01T23:59:59.000Z

259

Integration and system tests of the Ford/General Electric ac electric drive system  

SciTech Connect

An advanced alternating current electric drive system is being developed by the General Electric Company for Ford Motor Company's ''Advanced Electric Vehicle Powertrain Effort,'' which is a major element of DOE's Single Shaft Electric Propulsion System Program. The integrated transaxle consists of an oil-cooled 50 hp ac induction motor mounted within a 2-speed transaxle. Direct current from the nominal 204 V battery pack is converted to variable frequency, variable voltage 3-phase ac current by a liquid-cooled transistor inverter. A custom-designed inverter motor controller, containing two 8751 microcomputers plus analog and digital circuitry, translates torque commands from the controller to the inverter transistor base drivers that turn on/off power Darlington transistors at appropriate times. After a review of the electric drive system ratings, details of the transistor inverter are presented. Control strategy and controller design are summarized. Electric drive integration and system test results are given.

King, R.D.; Park, J.N.

1985-01-01T23:59:59.000Z

260

Driving Demand for Home Energy Improvements  

NLE Websites -- All DOE Office Websites (Extended Search)

Driving Demand for Home Energy Improvements Driving Demand for Home Energy Improvements Title Driving Demand for Home Energy Improvements Publication Type Report Year of Publication 2010 Authors Fuller, Merrian C., Cathy Kunkel, Mark Zimring, Ian M. Hoffman, Katie L. Soroye, and Charles A. Goldman Tertiary Authors Borgeson, Merrian Pagination 136 Date Published 09/2010 Publisher LBNL City Berkeley Keywords electricity markets and policy group, energy analysis and environmental impacts department Abstract Policy makers and program designers in the U.S. and abroad are deeply concerned with the question of how to scale up energy efficiency to a level that is commensurate both to the energy and climate challenges we face, and to the potential for energy savings that has been touted for decades. When policy makers ask what energy efficiency can do, the answers usually revolve around the technical and economic potential of energy efficiency-they rarely hone in on the element of energy demand that matters most for changing energy usage in existing homes: the consumer. A growing literature is concerned with the behavioral underpinnings of energy consumption. We examine a narrower, related subject: How can millions of Americans be persuaded to divert valued time and resources into upgrading their homes to eliminate energy waste, avoid high utility bills, and spur the economy? With hundreds of millions of public dollars1 flowing into incentives, workforce training, and other initiatives to support comprehensive home energy improvements2, it makes sense to review the history of these programs and begin gleaning best practices for encouraging comprehensive home energy improvements. Looking across 30 years of energy efficiency programs that targeted the residential market, many of the same issues that confronted past program administrators are relevant today: How do we cost-effectively motivate customers to take action? Who can we partner with to increase program participation? How do we get residential efficiency programs to scale? While there is no proven formula-and only limited success to date with reliably motivating large numbers of Americans to invest in comprehensive home energy improvements, especially if they are being asked to pay for a majority of the improvement costs-there is a rich and varied history of experiences that new programs can draw upon. Our primary audiences are policy makers and program designers-especially those that are relatively new to the field, such as the over 2,000 towns, cities, states, and regions who are recipients of American Reinvestment and Recovery Act funds for clean energy programs. This report synthesizes lessons from first generation programs, highlights emerging best practices, and suggests methods and approaches to use in designing, implementing, and evaluating these programs. We examined 14 residential energy efficiency programs, conducted an extensive literature review, interviewed industry experts, and surveyed residential contractors to draw out these lessons.

Note: This page contains sample records for the topic "frequency drives vfds" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Conceptual Design - Polar Drive Ignition Campaign  

SciTech Connect

The Laboratory for Laser Energetics (LLE) at the University of Rochester is proposing a collaborative effort with Lawrence Livermore National Laboratory (LLNL), Los Alamos National Laboratories (LANL), the Naval Research Laboratory (NRL), and General Atomics (GA) with the goal of developing a cryogenic polar drive (PD) ignition platform on the National Ignition Facility (NIF). The scope of this proposed project requires close discourse among theorists, experimentalists, and laser and system engineers. This document describes how this proposed project can be broken into a series of parallel independent activities that, if implemented, could deliver this goal in the 2017 timeframe. This Conceptual Design document is arranged into two sections: mission need and design requirements. Design requirements are divided into four subsystems: (1) A point design that details the necessary target specifications and laser pulse requirements; (2) The beam smoothing subsystem that describes the MultiFM 1D smoothing by spectral dispersion (SSD); (3) New optical elements that include continuous phase plates (CPP's) and distributed polarization rotators (DPR's); and (4) The cryogenic target handling and insertion subsystem, which includes the design, fabrication, testing, and deployment of a dedicated PD ignition target insertion cryostat (PD-ITIC). This document includes appendices covering: the primary criteria and functional requirements, the system design requirements, the work breakdown structure, the target point design, the experimental implementation plan, the theoretical unknowns and technical implementation risks, the estimated cost and schedule, the development plan for the DPR's, the development plan for MultiFM 1D SSD, and a list of acronym definitions. While work on the facility modifications required for PD ignition has been in progress for some time, some of the technical details required to define the specific modifications for a Conceptual Design Review (CDR) remain to be defined. In all cases, the facility modifications represent functional changes to existing systems or capabilities. The bulk of the scope yet to be identified is associated with the DPR's and MultiFM beam smoothing. Detailed development plans for these two subsystems are provided in Appendices H and I; additional discussion of subsystem requirements based on the physics of PD ignition is given in Section 3. Accordingly, LLE will work closely with LLNL to develop detailed conceptual designs for the PD-specific facility modifications, including assessments of the operational impact of implementation (e.g., changing optics for direct rather than indirect-drive illumination and swapping from a hohlraum-based ITIC to one that supports PD). Furthermore, the experimental implementation plan represents the current best understanding of the experimental campaigns required to achieve PD ignition. This plan will evolve based on the lessons learned from the National Ignition Campaign (NIC) and ongoing indirect-drive ignition experiments. The plan does not take the operational realities of the PD configuration into account; configuration planning for the proposed PD experiments is beyond the scope of this document.

Hansen, R

2012-04-05T23:59:59.000Z

262

Conceptual Design - Polar Drive Ignition Campaign  

SciTech Connect

The Laboratory for Laser Energetics (LLE) at the University of Rochester is proposing a collaborative effort with Lawrence Livermore National Laboratory (LLNL), Los Alamos National Laboratories (LANL), the Naval Research Laboratory (NRL), and General Atomics (GA) with the goal of developing a cryogenic polar drive (PD) ignition platform on the National Ignition Facility (NIF). The scope of this proposed project requires close discourse among theorists, experimentalists, and laser and system engineers. This document describes how this proposed project can be broken into a series of parallel independent activities that, if implemented, could deliver this goal in the 2017 timeframe. This Conceptual Design document is arranged into two sections: mission need and design requirements. Design requirements are divided into four subsystems: (1) A point design that details the necessary target specifications and laser pulse requirements; (2) The beam smoothing subsystem that describes the MultiFM 1D smoothing by spectral dispersion (SSD); (3) New optical elements that include continuous phase plates (CPP's) and distributed polarization rotators (DPR's); and (4) The cryogenic target handling and insertion subsystem, which includes the design, fabrication, testing, and deployment of a dedicated PD ignition target insertion cryostat (PD-ITIC). This document includes appendices covering: the primary criteria and functional requirements, the system design requirements, the work breakdown structure, the target point design, the experimental implementation plan, the theoretical unknowns and technical implementation risks, the estimated cost and schedule, the development plan for the DPR's, the development plan for MultiFM 1D SSD, and a list of acronym definitions. While work on the facility modifications required for PD ignition has been in progress for some time, some of the technical details required to define the specific modifications for a Conceptual Design Review (CDR) remain to be defined. In all cases, the facility modifications represent functional changes to existing systems or capabilities. The bulk of the scope yet to be identified is associated with the DPR's and MultiFM beam smoothing. Detailed development plans for these two subsystems are provided in Appendices H and I; additional discussion of subsystem requirements based on the physics of PD ignition is given in Section 3. Accordingly, LLE will work closely with LLNL to develop detailed conceptual designs for the PD-specific facility modifications, including assessments of the operational impact of implementation (e.g., changing optics for direct rather than indirect-drive illumination and swapping from a hohlraum-based ITIC to one that supports PD). Furthermore, the experimental implementation plan represents the current best understanding of the experimental campaigns required to achieve PD ignition. This plan will evolve based on the lessons learned from the National Ignition Campaign (NIC) and ongoing indirect-drive ignition experiments. The plan does not take the operational realities of the PD configuration into account; configuration planning for the proposed PD experiments is beyond the scope of this document.

Hansen, R

2012-04-05T23:59:59.000Z

263

Converter-fed subsea motor drives  

SciTech Connect

A subsea adjustable-speed motor fed via a long cable in range of several tens of kilometers between the converter and the motor are analyzed by simulations. Due to resonance, one critical frequency range occurs where significant generation of harmonics from the inverter should be avoided. A voltage source inverter is more feasible than a current source inverter since it is easier to modify the output waveform in order to avoid resonance problems. The resistive voltage drop in the long cable reduces the air-gap torque of the motor particular at low frequencies. This causes a problem for the start-up of the motor due to stiction torque. A start-up strategy is envisaged which is a compromise between voltage boost, inverter current, and transformer core dimensions. In normal operation mode the inverter voltage is proportional to the frequency. An open speed lop is used which keeps the system stable for potential load variations. The results from a 1-MW full-scale system test are summarized.

Raad, R.O.; Raphael, H.B. [Statoil, Stavanger (Norway); Henriksen, T. [Norwegian Electric Power Research Inst., Trondheim (Norway); Hadler-Jacobsen, A. [Framo Engineering AS, Nesttun (Norway)

1996-09-01T23:59:59.000Z

264

Working on new gas turbine cycle for heat pump drive  

E-Print Network (OSTI)

Working on new gas turbine cycle for heat pump drive FILE COPY TAP By Irwin Stambler, Field Editor DO NOT 16 0 REMOVE 16 Small recuperated gas turbine engine, design rated at 13 hp and 27% efficiency of the cycle- as a heat pump drive for commercial installations. Company is testing prototype gas turbine

Oak Ridge National Laboratory

265

Computer Hard Drive Geolocation by HTTP Feature Extraction  

E-Print Network (OSTI)

files of a set of computers acquired in China, part of a larger research data set of real user data [10Computer Hard Drive Geolocation by HTTP Feature Extraction Technical Report UCSC-SSRC-12-04 May://www.ssrc.ucsc.edu/ #12;Computer Hard Drive Geolocation by HTTP Feature Extraction Ziqian Wan Sichuan University Alex J

Miller, Ethan L.

266

Minimizing Change Aversion for the Google Drive Launch  

E-Print Network (OSTI)

Minimizing Change Aversion for the Google Drive Launch Abstract Change aversion is a natural of the Google Docs List to Google Drive, a product for file storage in the cloud. We describe actions­May 2, 2013, Paris, France. ACM 978-1-4503-1952-2/13/04. Aaron Sedley Google, Inc. 1600 Amphitheatre

Cortes, Corinna

267

Electromechanical coupling model for cutterhead driving system of shield machines  

Science Conference Proceedings (OSTI)

The synchronization of the cutterhead driving system of shield machines is affected by not only the nonlinearity of mechanical transmission mechanism and the characteristics of driving motors, but also their interaction. In this paper, dynamics of the ... Keywords: cutterhead, electromechanical coupling, synchronization

Jianzhong Sun; Ran Liu; Yaqin Luo; Wei Sun

2010-11-01T23:59:59.000Z

268

Test Drive: Honda FCX Clarity | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Test Drive: Honda FCX Clarity Test Drive: Honda FCX Clarity Test Drive: Honda FCX Clarity May 14, 2010 - 10:52am Addthis A member of the Energy Empowers team takes the Honda FCX Clarity for a drive outside the U.S. Department of Energy in Washington, D.C. | Photo by Sunita Satyapal A member of the Energy Empowers team takes the Honda FCX Clarity for a drive outside the U.S. Department of Energy in Washington, D.C. | Photo by Sunita Satyapal Paul Lester Communications Specialist, Office of Energy Efficiency and Renewable Energy Stepping into the driver's seat of the hydrogen powered Honda FCX Clarity is like stepping into the future. A glowing blue 3-D dashboard displays hydrogen and battery levels and a power button fires up fuel cells that provide electricity. An advanced braking system warns the driver about

269

Gift tag drive benefits local children and seniors  

NLE Websites -- All DOE Office Websites (Extended Search)

Gift Tag Drive Gift Tag Drive Community Connections: Our link to Northern New Mexico Communities Latest Issue:Dec. 2013 - Jan. 2014 All Issues » submit Gift tag drive benefits local children and seniors Each year, Lab employees and contractors work to make the holidays brighter for local children and seniors through its Holiday Gift Tag drive. January 1, 2013 dummy image Read our archives Contacts Editor Linda Anderman Email Community Programs Office Kurt Steinhaus Email Individuals identified through regional nonprofit social-welfare organizations indicate what presents might make their holidays happier, and that information is transcribed onto gift tags. Each year, Lab employees and contractors work to make the holidays brighter for local children and seniors through its Holiday Gift Tag drive.

270

Driving Transformation to Energy Efficient Buildings:Policies and Actions |  

Open Energy Info (EERE)

Driving Transformation to Energy Efficient Buildings:Policies and Actions Driving Transformation to Energy Efficient Buildings:Policies and Actions Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Driving Transformation to Energy Efficient Buildings:Policies and Actions Agency/Company /Organization: Johnson Controls Sector: Climate, Energy Focus Area: Energy Efficiency Topics: Implementation, Policies/deployment programs Resource Type: Publications Website: www.institutebe.com/ Cost: Free Driving Transformation to Energy Efficient Buildings:Policies and Actions Screenshot References: Driving Transformation to Energy Efficient Buildings:Policies and Actions[1] "The aim of this paper is to review policy options available for policymakers in developing countries that can accelerate energy efficiency improvements in the built environment and track results over time. It

271

Thanksgiving Goodwill: West Valley Demonstration Project Food Drive  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Thanksgiving Goodwill: West Valley Demonstration Project Food Drive Thanksgiving Goodwill: West Valley Demonstration Project Food Drive Provides 640 Turkeys to People in Need Thanksgiving Goodwill: West Valley Demonstration Project Food Drive Provides 640 Turkeys to People in Need November 26, 2013 - 12:00pm Addthis Volunteers from West Valley Demonstration Project gather before distributing items collected in an annual food drive. Volunteers from West Valley Demonstration Project gather before distributing items collected in an annual food drive. Volunteer John Schelble helps unload a delivery truck at a food pantry. Volunteer John Schelble helps unload a delivery truck at a food pantry. John Rizzo passes canned food to John Rendall to deliver to a food pantry. John Rizzo passes canned food to John Rendall to deliver to a food pantry.

272

NREL: Fleet Test and Evaluation - Hydraulic Hybrid Drive Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Hydraulic Hybrid Drive Systems Hydraulic Hybrid Drive Systems NREL's Fleet Test and Evaluation Team conducts performance evaluations of hydraulic hybrid drive systems in delivery vehicles. Because hydraulic hybrids feature highly efficient regenerative braking systems and "engine off at idle" capabilities, they are ideal for parcel delivery applications where stop-and-go traffic is common. Hydraulic hybrid systems can capture up to 70% of the kinetic energy that would otherwise be lost during braking. This energy drives a pump, which transfers hydraulic fluid from a low-pressure reservoir to a high-pressure accumulator. When the vehicle accelerates, fluid in the high-pressure accumulator moves to the lower-pressure reservoir, which drives a motor and provides extra torque. This process can improve the vehicle's fuel economy

273

Test Drive: Honda FCX Clarity | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Test Drive: Honda FCX Clarity Test Drive: Honda FCX Clarity Test Drive: Honda FCX Clarity May 14, 2010 - 10:52am Addthis A member of the Energy Empowers team takes the Honda FCX Clarity for a drive outside the U.S. Department of Energy in Washington, D.C. | Photo by Sunita Satyapal A member of the Energy Empowers team takes the Honda FCX Clarity for a drive outside the U.S. Department of Energy in Washington, D.C. | Photo by Sunita Satyapal Paul Lester Communications Specialist for the Office of Energy Efficiency and Renewable Energy Stepping into the driver's seat of the hydrogen powered Honda FCX Clarity is like stepping into the future. A glowing blue 3-D dashboard displays hydrogen and battery levels and a power button fires up fuel cells that provide electricity. An advanced braking system warns the driver about

274

Do You Drive a Hybrid Electric Vehicle? | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Do You Drive a Hybrid Electric Vehicle? Do You Drive a Hybrid Electric Vehicle? Do You Drive a Hybrid Electric Vehicle? July 9, 2009 - 1:34am Addthis In Tuesday's entry, Francis X. Vogel from the Wisconsin Clean Cities coalition told us about his plug-in hybrid electric vehicle (PHEV). He's one of the lucky few in the United States to drive one of these vehicles because factory-made PHEV's are not yet available to the public. Regular hybrid electric vehicles, however, are widely available and seem to be more and more common on the roads. Do you drive a hybrid electric vehicle? Please share your experience with it in the comments. Each Thursday, you have the chance to share your thoughts on a topic related to energy efficiency or renewable energy for consumers. Please comment with your answers, and also feel free to respond to other comments.

275

The role of heating and current drive in ITER  

SciTech Connect

This report discusses and summarize the role of heating and non-inductive current drive in ITER as: (1) ITER must have heating power sufficient for ignition. (2) The heating system must be capable of current drive. (3) Steady-state operation is an ``ultimate goal.`` It is recognized that additional heating and current drive power (beyond what is initially installed on ITER) may be required. (4) The ``Ultimate goal of steady-state operation`` means steady-state with Q{sub CD} {ge} 5. Unlike the ``Terms of Reference`` for the ITER CDA, the ``ITER Technical Objectives and Approaches`` for the EDA sets no goal for the neutron wall load during steady-state operation. (5) In addition to bulk current drive, the ITER heating and current drive system should be used for current profile control and for burn control.

Nevins, W.M.; Haney, S.

1993-10-18T23:59:59.000Z

276

Lower Hybrid Heating and Current Drive on the Alcator C-Mod Tokamak  

SciTech Connect

On the Alcator C-Mod tokamak, lower hybrid current drive (LHCD) is being used to modify the current profile with the aim of obtaining advanced tokamak (AT) performance in plasmas with parameters similar to those that would be required on ITER. To date, power levels in excess of 1 MW at a frequency of 4.6 GHz have been coupled into a variety of plasmas. Experiments have established that LHCD on C-Mod behaves globally as predicted by theory. Bulk current drive efficiencies, n20IlhR/Plh ~ 0.25, inferred from magnetics and MSE are in line with theory. Quantitative comparisons between local measurements, MSE, ECE and hard x-ray bremsstrahlung, and theory/simulation using the GENRAY, TORIC-LH CQL3D and TSC-LSC codes have been performed. These comparisons have demonstrated the off-axis localization of the current drive, its magnitude and location dependence on the launched n|| spectrum, and the use of LHCD during the current ramp to save volt-seconds and delay the peaking of the current profile. Broadening of the x-ray emission profile during ICRF heating indicates that the current drive location can be controlled by the electron temperature, as expected. In addition, an alteration in the plasma toroidal rotation profile during LHCD has been observed with a significant rotation in the counter current direction. Notably, the rotation is accompanied by peaking of the density and temperature profiles on a current diffusion time scale inside of the half radius where the LH absorption is taking place.

R. Wilson, R. Parker, M. Bitter, P.T. Bonoli, C. Fiore, R.W. Harvey, K. Hill, A.E. Hubbard, J.W. Hughes, A. Ince-Cushman, C. Kessel, J.S. Ko, O. Meneghini, C.K. Phillips, M. Porkolab, J. Rice, A.E. Schmidt, S. Scott,S. Shiraiwa, E. Valeo, G.Wallace, J.C. Wright and the Alcator C-Mod Team

2009-11-20T23:59:59.000Z

277

Comparing Coordinated Garbage Collection Algorithms for Arrays of Solid-state Drives  

SciTech Connect

Solid-State Drives (SSDs) offer significant performance improvements over hard disk drives (HDD) on a number of workloads. The frequency of garbage collection (GC) activity is directly correlated with the pattern, frequency, and volume of write requests, and scheduling of GC is controlled by logic internal to the SSD. SSDs can exhibit significant performance degradations when garbage collection (GC) conflicts with an ongoing I/O request stream. When using SSDs in a RAID array, the lack of coordination of the local GC processes amplifies these performance degradations. No RAID controller or SSD available today has the technology to overcome this limitation. In our previous work, we presented a Global Garbage Collection (GGC) mechanism to improve response times and reduce performance variability for a RAID array of SSDs. A coordination method is employed so that GCs in the array can run at the same time. The coordination can exhibit substantial performance improvement. In this paper, we explore various GC coordination algorithms. We develop reactive and proactive GC coordination algorithms and evaluate their I/O performance and block erase counts for various workloads. We show that a proactive GC coordination algorithm can improve the I/O response times by up to 9% further and increase the lifetime of SSDs by reducing the number of block erase counts by up to 79% compared to a reactive algorithm.

Lee, Junghee [ORNL; Kim, Youngjae [ORNL; Oral, H Sarp [ORNL; Shipman, Galen M [ORNL; Dillow, David A [ORNL; Wang, Feiyi [ORNL

2012-01-01T23:59:59.000Z

278

Harmonia: A Globally Coordinated Garbage Collector for Arrays of Solid-state Drives  

Science Conference Proceedings (OSTI)

Solid-State Drives (SSDs) offer significant performance improvements over hard disk drives (HDD) on a number of workloads. The frequency of garbage collection (GC) activity is directly correlated with the pattern, frequency, and volume of write requests, and scheduling of GC is controlled by logic internal to the SSD. SSDs can exhibit significant performance degradations when garbage collection (GC) conflicts with an ongoing I/O request stream. When using SSDs in a RAID array, the lack of coordination of the local GC processes amplifies these performance degradations. No RAID controller or SSD available today has the technology to overcome this limitation. This paper presents Harmonia, a Global Garbage Collection (GGC) mechanism to improve response times and reduce performance variability for a RAID array of SSDs. Our proposal includes a high-level design of SSD-aware RAID controller and GGC-capable SSD devices, as well as algorithms to coordinate the global GC cycles. Our simulations show that this design improves response time and reduces performance variability for a wide variety of enterprise workloads. For bursty, write dominant workloads response time was improved by 69% while performance variability was reduced by 71%.

Kim, Youngjae [ORNL; Oral, H Sarp [ORNL; Shipman, Galen M [ORNL; Lee, Junghee [ORNL; Dillow, David A [ORNL; Wang, Feiyi [ORNL

2011-01-01T23:59:59.000Z

279

Laser-frequency multiplication  

SciTech Connect

A high quality mode locked pulse train was obtained at 9.55 micrometers, the CO2 wavelength chosen for frequency doubling into the atmospheric window at 4.8 micrometers. The pulse train consists of a 3 micro sec burst of 1.5 nsec pulses separated by 40 nsec, in a TEM(00) mode and with a total energy of 100 mJ. The pulse intensity without focussing is about 3 MW/sq.cm., already quite close to the target intensity of 10 MW/sq.cm. for frequency doubling in a AgGaSe2 crystal. The mode-locked train is obtained by intracavity modulation at 12.5 MHz using a germanium crystal driven with a power of about 30 Watts. Line selection is achieved firstly by the use of a 0.92 mm thick CaF2 plate at the Brewster angle within the cavity, which completely suppresses 10.6 micrometer band radiation. Secondly, a particular rotational line, the P20 at 9.55 micrometers, is selected by the injection of a continuous beam is mode-matched to the pulsed laser cavity using a long focal length lens, and for best line-locking it is necessary to fine tune the length of the pulsed laser resonator. Injection causes substantial depression of the gain switched spike.

Not Available

1991-11-01T23:59:59.000Z

280

Animation of JILA Frequency Comb Spectroscopy Technique  

Science Conference Proceedings (OSTI)

Animation of JILA Frequency Comb Spectroscopy Technique. The new JILA "frequency comb spectroscopy" technique ...

2012-08-17T23:59:59.000Z

Note: This page contains sample records for the topic "frequency drives vfds" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

UHF FM receiver having improved frequency stability and low RFI emission  

DOE Patents (OSTI)

A UHF receiver which converts UHF modulated carrier signals to baseband video signals without any heterodyne or frequency conversion stages. A bandpass filter having a fixed frequency first filters the signals. A low noise amplifier amplifies the filtered signal and applies the signal through further amplification stages to a limited FM demodulator circuit. The UHF signal is directly converted to a baseband video signal. The baseband video signal is clamped by a clamping circuit before driving a monitor. Frequency stability for the receivers is at a theoretical maximum, and interference to adjacent receivers is eliminated due to the absence of a local oscillator.

Lupinetti, Francesco (Albuquerque, NM)

1990-02-27T23:59:59.000Z

282

UHF FM receiver having improved frequency stability and low RFI emission  

DOE Patents (OSTI)

This invention pertains to a UHF receiver which converts modulated carrier signals to baseband video signals without any heterodyne or frequency conversion stages. A bandpass filter having a fixed frequency first filters the signals. A low noise amplifier amplifies the filtered signal and applies the signal through further amplification stages to a limiter FM demodulator circuit. The UHF signal is directly converted to a baseband video signal. The baseband video signal is clamped by a clamping circuit before driving a monitor. Frequency stability for the receivers is at a theoretical maximum, and interference to adjacent receivers is eliminated due to the absence of a local oscillator. 5 refs.

Lupinetti, F.

1988-08-29T23:59:59.000Z

283

Radio frequency coaxial feedthrough  

DOE Patents (OSTI)

An improved radio frequency coaxial transmission line vacuum feed-through provided based on the use of a half-wavelength annular dielectric pressure barrier disk, or multiple disks comprising an effective half wavelength structure to eliminate reflections from the barrier surfaces. Gas-tight seals are formed about the outer and inner diameter surfaces of the barrier disk using a sealing technique which generates radial forces sufficient to form seals by forcing the conductor walls against the surfaces of the barrier disks in a manner which does not deform the radii of the inner and outer conductors, thereby preventing enhancement of the electric field at the barrier faces which limits voltage and power handling capabilities of a feedthrough.

Owens, Thomas L. (Kingston, TN)

1989-01-17T23:59:59.000Z

284

Frequency mixing crystal  

DOE Patents (OSTI)

In a laser system for converting infrared laser light waves to visible light comprising a source of infrared laser light waves and means of harmonic generation associated therewith for production of light waves at integral multiples of the frequency of the original wave, the improvement of said means of harmonic generation comprising a crystal having the chemical formula X{sub 2} Y(NO{sub 3}){sub 5} {center_dot} 2 nZ{sub 2}O wherein X is selected from the group consisting of Li, Na, K, Rb, Cs, and Tl; Y is selected from the group consisting of Sc, Y, La, Ce, Nd, Pr, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Al, Ga, and In; Z is selected from the group consisting of H and D; and n ranges from 0 to 4.

Ebbers, C.A.; Davis, L.E.; Webb, M.

1990-10-16T23:59:59.000Z

285

Frequency mixing crystal  

DOE Patents (OSTI)

In a laser system for converting infrared laser light waves to visible light comprising a source of infrared laser light waves and means of harmonic generation associated therewith for production of light waves at integral multiples of the frequency of the original wave, the improvement of said means of harmonic generation comprising a crystal having the chemical formula X{sub 2} Y(NO{sub 3}){sub 5} {center dot} 2 nZ{sub 2}O wherein X is selected from the group consisting of Li, Na, K, Rb, Cs, and Tl; Y is selected from the group consisting of Sc, Y, La, Ce, Nd, Pr, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Al, Ga, and In; Z is selected from the group consisting of H and D; and n ranges from 0 to 4.

Ebbers, C.A.; Davis, L.E.; Webb, M.

1990-10-16T23:59:59.000Z

286

Frequency mixing crystal  

DOE Patents (OSTI)

In a laser system for converting infrared laser light waves to visible light comprising a source of infrared laser light waves and means of harmoic generation associated therewith for production of light waves at integral multiples of the frequency of the original wave, the improvement of said means of harmonic generation comprising a crystal having the chemical formula X.sub.2 Y(NO.sub.3).sub.5 .multidot.2 nZ.sub.2 o wherein X is selected from the group consisting of Li, Na, K, Rb, Cs, and Tl; Y is selected from the group consisting of Sc, Y, La, Ce, Nd, Pr, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Al, Ga, and In; Z is selected from the group consisting of H and D; and n ranges from 0 to 4.

Ebbers, Christopher A. (Livermore, CA); Davis, Laura E. (Manteca, CA); Webb, Mark (Salida, CA)

1992-01-01T23:59:59.000Z

287

COAXIAL CONTROL ROD DRIVE MECHANISM FOR NEUTRONIC REACTORS  

DOE Patents (OSTI)

A drive mechanism is presented for the control rod or a nuclear reactor. In this device the control rod is coupled to a drive shaft which extends coaxially through the rotor of an electric motor for relative rotation with respect thereto. A gear reduction mehanism is coupled between the rotor and the drive shaft to convert the rotary motion of the motor into linear motion of the shaft with a comparatively great reduction in speed, thereby providing relatively glow linear movement of the shaft and control rod for control purposes.

Fox, R.J.; Oakes, L.C.

1959-04-14T23:59:59.000Z

288

Base drive circuit for a four-terminal power Darlington  

DOE Patents (OSTI)

A high power switching circuit which utilizes a four-terminal Darlington transistor block to improve switching speed, particularly in rapid turn-off. Two independent reverse drive currents are utilized during turn off in order to expel the minority carriers of the Darlington pair at their own charge sweep-out rate. The reverse drive current may be provided by a current transformer, the secondary of which is tapped to the base terminal of the power stage of the Darlington block. In one application, the switching circuit is used in each power switching element in a chopper-inverter drive of an electric vehicle propulsion system.

Lee, Fred C. (Blacksburg, VA); Carter, Roy A. (Salem, VA)

1983-01-01T23:59:59.000Z

289

Transistorized power switch and base drive circuit therefore  

DOE Green Energy (OSTI)

A high power switching circuit is disclosed which utilizes a four-terminal Darlington transistor block to improve switching speed, particularly in rapid turn-off. Two independent reverse drive currents are utilized during turn-off in order to expel the minority carriers of the Darlington pair at their own charge sweep-out rate. The reverse drive current may be provided by a current transformer, the secondary of which is tapped to the base terminal of the power stage of the Darlington block. In one application, the switching circuit is used in each power switching element in a chopper-inverter drive of an electric vehicle propulsion system.

Lee, F.C.; Carter, R.A.

1981-03-24T23:59:59.000Z

290

OpenXC sample driving data | OpenEI Community  

Open Energy Info (EERE)

OpenXC sample driving data OpenXC sample driving data Home > Groups > Developer Rmckeel's picture Submitted by Rmckeel(297) Contributor 24 September, 2012 - 10:29 OpenXC This file represents raw data from OpenXC, in the form of single-vehicle trace files. This may be accessed from any programming language or existing system you want, but a Python wrapper will soon be made available and linked to OpenEI's energy hackathon resources. A description of the format for each individual measurement: http://openxcplatform.com/vehicle-interface/output-format.html A description of the trace files (including the driving.txt file), which is simple a list of individual measurements with timestamps: http://openxcplatform.com/android/testing.html Note: when this sample data forms a more complete dataset of real driving

291

Driving for $1.14 Per Gallon | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Driving for $1.14 Per Gallon Driving for $1.14 Per Gallon Driving for $1.14 Per Gallon June 11, 2013 - 7:30am Addthis News Media Contact (202) 586-4940 WASHINGTON - The Energy Department today launched the eGallon - a quick and simple way for consumers to compare the costs of fueling electric vehicles vs. driving on gasoline. Today's national average eGallon price is about $1.14, meaning that a typical electric vehicle could travel as far on $1.14 worth of electricity as a similar vehicle could travel on a gallon of gasoline. "Consumers can see gasoline prices posted at the corner gas station, but are left in the dark on the cost of fueling an electric vehicle. The eGallon will bring greater transparency to vehicle operating costs, and help drivers figure out how much they might save on fuel by choosing an

292

Homodyne target tracking for direct drive laser inertial fusion  

E-Print Network (OSTI)

National Laboratory. Inertial Fusion Energy: How IFE Works,Tracking of Direct Drive Inertial Fusion Targets."Fusion Science and Technology 52.3 (2007): 435-439. Tillack,

Spalding, Jon David

2009-01-01T23:59:59.000Z

293

Vehicle Technologies Office: Fact #797: September 16, 2013 Driving...  

NLE Websites -- All DOE Office Websites (Extended Search)

driving ranges for electric vehicles (EVs) offered for the 2013 model year (MY). The Tesla Model S has the longest range of any EV offered, ranging from 139 miles for the 40...

294

Low backlash direct drive actuator - Energy Innovation Portal  

A low backlash direct drive actuator is described which comprises a motor such as a stepper motor having at least 200 steps per revolution; a two part hub assembly ...

295

High efficiency pulse motor drive for robotic propulsion  

E-Print Network (OSTI)

The goal of this research is to improve the power efficiency of robotic locomotion through the use of series elastic actuation, with a focus on swimming motion. To achieve high efficiency, electromechanical drives need to ...

Sun, Zhen, M.S. Massachusetts Institute of Technology

2013-01-01T23:59:59.000Z

296

Driving on "Green" Electrons | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Driving on "Green" Electrons Driving on "Green" Electrons Driving on "Green" Electrons September 6, 2011 - 7:30am Addthis Shannon Brescher Shea Communications Manager, Clean Cities Program So you've decided you want to drive on electricity. You've considered your commute, how often you could plug in your car, and whether you want a plug-in hybrid electric (PHEV) or all-electric vehicle (EV) . But you have one more decision to make - your electricity source. Although electricity is cleaner than petroleum once it gets to your car, not all electricity is created equal. Greenhouse gases that contribute to climate change and smog-forming emissions can come from two different sources in cars - the vehicle's tailpipe and the production of the fuel. The total of these sources is the

297

Driving Home to a Clean Energy Future | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Driving Home to a Clean Energy Future Driving Home to a Clean Energy Future Driving Home to a Clean Energy Future June 7, 2011 - 10:57am Addthis Eric Barendsen Energy Technology Program Specialist, Office of Energy Efficiency and Renewable Energy Working here at the Department of Energy, I hear a lot about the latest efforts to design and build vehicles for a more energy-efficient future. The clean energy innovations in vehicle technologies that DOE and its partners are advancing will help American families save money at the pump-or even allow them to quit the gas pump altogether. Today, I want to highlight a few of the recent developments that will encourage drivers to be smarter consumers, help industry leaders make the cars and trucks we drive more energy efficient, and allow us to spend less of our hard-earned

298

Cruising to Energy Savings This Summer Driving Season | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Cruising to Energy Savings This Summer Driving Season Cruising to Energy Savings This Summer Driving Season Cruising to Energy Savings This Summer Driving Season May 11, 2010 - 7:30am Addthis Eric Barendsen Energy Technology Program Specialist, Office of Energy Efficiency and Renewable Energy My dad is obsessed with fuel efficiency. I joked with him on a recent road trip that when he retires, he'll have more time to pursue his dream career as a fuel-economy promoter. Well guess what, I just found the treasure trove of information on smart driving that's going to make his whole week-it's at fueleconomy.gov. Now, I know we've blogged on this in the past. But it's been a while, and this stuff is good to keep fresh in your mind as the price of gasoline creeps up this summer. The site provides information on everything

299

EA-1851: Delphi Automotive Systems Electric Drive Vehicle Battery and  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

EA-1851: Delphi Automotive Systems Electric Drive Vehicle Battery EA-1851: Delphi Automotive Systems Electric Drive Vehicle Battery and Component Manufacturing Initiative EA-1851: Delphi Automotive Systems Electric Drive Vehicle Battery and Component Manufacturing Initiative Summary This EA evaluates the environmental impacts of a proposal to provide a financial assistance grant under the American Recovery and Reinvestment Act of 2009 (ARRA) to Delphi Automotive Systems, Limited Liability Corporation (LLC) (Delphi). Delphi proposes to construct a laboratory referred to as the "Delphi Kokomo, IN Corporate Technology Center" (Delphi CTC Project) and retrofit a manufacturing facility. The project would advance DOE's Vehicle Technology Program through manufacturing and testing of electric-drive vehicle components as well as assist in the

300

MHK Technologies/Anaconda bulge tube drives turbine | Open Energy  

Open Energy Info (EERE)

Anaconda bulge tube drives turbine Anaconda bulge tube drives turbine < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Anaconda bulge tube drives turbine.jpg Technology Profile Primary Organization Checkmate SeaEnergy Technology Resource Click here Wave Technology Type Click here Oscillating Wave Surge Converter Technology Readiness Level Click here TRL 4 Proof of Concept Technology Description Anaconda uses a large water filled distensible rubber tube floating just beneath the ocean surface and oriented parallel to wave direction As a wave passes the bulge tube is lifted with the surrounding water and this causes a bulge wave to be excited which then passes down the tubes walls gathering energy from the ocean wave as it passes By matching the speed of the bulge wave to that of the sea wave resonance is achieved and high power capture becomes possible The bulge waves are then used to drive a turbine generator located at the stern of the device

Note: This page contains sample records for the topic "frequency drives vfds" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
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301

EcoCar Drives Students to Innovate | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

EcoCar Drives Students to Innovate EcoCar Drives Students to Innovate EcoCar Drives Students to Innovate October 26, 2010 - 5:21pm Addthis EcoCar Drives Students to Innovate Shannon Brescher Shea Communications Manager, Clean Cities Program Last year, Americans used about 138 billion gallons of gasoline - mostly imported - for transportation, costing Americans about $300 billion. The Department of Energy, through the Recovery Act, is investing in more fuel-efficient battery and electric vehicles to reduce these costs and training a strong, talented workforce to develop these cleaner, more sustainable technologies. Recognizing the importance of engaging students in this endeavor, the Department of Energy and General Motors (GM) established the EcoCar Challenge - a three-year Advanced Vehicle

302

NREL: Hydrogen and Fuel Cells Research - Automakers Drive toward...  

NLE Websites -- All DOE Office Websites (Extended Search)

Automakers Drive toward Fuel Cell Electric Vehicles February 4, 2013 A recent Science Friday segment on National Public Radio (NPR) featured Jen Kurtz of the U.S. Department of...

303

Probabilistic lane estimation for autonomous driving using basis curves  

E-Print Network (OSTI)

Lane estimation for autonomous driving can be formulated as a curve estimation problem, where local sensor data provides partial and noisy observations of spatial curves forming lane boundaries. The number of lanes to ...

Huang, Albert S.

304

#LabChat: Innovations Driving More Efficient Vehicles, Dec. 13...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Efficient Vehicles, Dec. 13 at 2 pm ET December 11, 2012 - 10:09am Q&A Researchers are developing technologies that will help consumers drive farther using less fuel. Have...

305

A development framework for Virtools-based DVR driving system  

Science Conference Proceedings (OSTI)

The multi-client technique framework is an essential mechanism of the Distributed Virtual Reality (DVR) driving simulator, which supports remote network real-time interaction and cooperation. As one of the excellent Virtual Reality software Development ...

Xunxiang Li; Dingfang Chen; Le Wang; Anding Li

2006-05-01T23:59:59.000Z

306

Obama Administration drives release of car safety data, unveils...  

NLE Websites -- All DOE Office Websites (Extended Search)

Obama Administration drives release of car safety data, unveils new NHTSA SaferCar app for iOS Safety DataTools Apps Challenges Resources Blogs Let's Talk Safety You are here...

307

Pallets of PV: Communities Purchase Solar and Drive Down Costs...  

Open Energy Info (EERE)

Pallets of PV: Communities Purchase Solar and Drive Down Costs Together Home > Groups > OpenEI Community Central Graham7781's picture Submitted by Graham7781(1982) Super...

308

Microsoft Word - Emittance Evolution of the Drive Electron Beam...  

NLE Websites -- All DOE Office Websites (Extended Search)

WF-NOTE-237 Dec. 21, 2007 Emittance Evolution of the Drive Electron Beam in Helical Undulator for ILC Positron Source Wanming Liu, Wei Gai, Michael Borland, Aimin Xiao, and...

309

Requirements for neutral beam current drive in tokamaks  

SciTech Connect

This paper contains viewgraphs on the use of neutral beam current drive in future tokamaks. Current profiles, slowing down distributions, beam destabilization of alfven waves and plasma parameters are some items covered in this paper. (DWL)

Dory, R.A.

1988-01-01T23:59:59.000Z

310

Homodyne target tracking for direct drive laser inertial fusion  

E-Print Network (OSTI)

direct drive inertial fusion reactor (Sethian). HAPL’sblock from the fusion reactor chamber. 4.3 Demonstration A.fusion reaction for generating electricity (see figure 1.1). In order for such a nuclear reactor

Spalding, Jon David

2009-01-01T23:59:59.000Z

311

Economic/operational advantages of top drive installations  

Science Conference Proceedings (OSTI)

This article addresses specific types of drilling operations, procedures and techniques associated with top drive drilling that create selected and/or specific economic opportunities and justifications for using a rental top drive. Types of drilling operations and/or wells that commonly justify top drive drilling described here include: drilling through sloughing or swelling formations; drilling extended reach, high angle and/or horizontal wells; drilling underbalanced through normal and subnormal formations; and wells with high daily operating costs, time constraints, i.e., days vs. depth, and/or safety and environmental concerns. Top drives, of course, are not justified for every drilling operation. Here, the discussion indicates some situations where portable systems may be applicable.

Brouse, M. [Tesco Drilling Technology, Houston, TX (United States)

1996-10-01T23:59:59.000Z

312

Comparative Assessment of Direct Drive High Temperature Superconductin...  

NLE Websites -- All DOE Office Websites (Extended Search)

Energy, LLC. Contract No. DE-AC36-08GO28308 Comparative Assessment of Direct Drive High Temperature Superconducting Generators in Multi-Megawatt Class Wind Turbines B....

313

Drive-access transit : a regional analytical framework  

E-Print Network (OSTI)

A framework for analyzing drive-access transit at a regional level is developed in this research. This framework is intended primarily for in-house use by regional transit agencies, yet has implications for the regional ...

Sorensen, James B

2005-01-01T23:59:59.000Z

314

Steam Turbines for Critical Applications and Emergency or Standby Drives  

E-Print Network (OSTI)

Steam turbines are frequently preferred over electric motors where operational continuity is important. This often imposes extreme premiums in operating cost. The parameters affecting relative economics are explored and a range of alternatives are discussed. Some light is shed on the often controversial (and even emotional) topics of automatic quick-start turbine drives, “slow” rolling of standby turbines, and the use of other types of emergency drives.

Waterland, A. F.

1986-06-01T23:59:59.000Z

315

Optical frequency combs: From frequency metrology to optical ...  

Science Conference Proceedings (OSTI)

... and to dis- tribute the load of the ... measurements of frequency ratios (ie, energy ratios), and ... accuracy or stability versus power consumption, cost, or ...

2004-01-27T23:59:59.000Z

316

Microsoft PowerPoint - 06 Crawley Drive for Net Zero Energy Commercial...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Microsoft PowerPoint - 06 Crawley Drive for Net Zero Energy Commercial Buildings Microsoft PowerPoint - 06 Crawley Drive for Net Zero Energy Commercial Buildings Microsoft...

317

Effective switching frequency multiplier inverter  

SciTech Connect

A switching frequency multiplier inverter for low inductance machines that uses parallel connection of switches and each switch is independently controlled according to a pulse width modulation scheme. The effective switching frequency is multiplied by the number of switches connected in parallel while each individual switch operates within its limit of switching frequency. This technique can also be used for other power converters such as DC/DC, AC/DC converters.

Su, Gui-Jia (Oak Ridge, TN); Peng, Fang Z. (Okemos, MI)

2007-08-07T23:59:59.000Z

318

Characterization and Suppression of the Electromagnetic Interference Induced Phase Shift in the JLab FEL Photo - Injector Advanced Drive Laser System  

SciTech Connect

The drive laser for the photo-cathode gun used in the JLab Free Electron Laser (FEL) facility had been experiencing various phase shifts on the order of tens of degrees (>20{sup o} at 1497 MHz or >40ps) when changing the Advanced Drive Laser (ADL) [2][3][4] micro-pulse frequencies. These phase shifts introduced multiple complications when trying to setup the accelerator for operation, ultimately inhibiting the robustness and overall performance of the FEL. Through rigorous phase measurements and systematic characterizations, we determined that the phase shifts could be attributed to electromagnetic interference (EMI) coupling into the ADL phase control loop, and subsequently resolved the issue of phase shift to within tenths of a degree (<0.5{sup o} at 1497 MHz or <1ps). The diagnostic method developed and the knowledge gained through the entire process will prove to be invaluable for future designs of similar systems.

F. G. Wilson, D. Sexton, S. Zhang

2011-09-01T23:59:59.000Z

319

Radio Frequency Engineering, MDE, Accelerator Operations and...  

NLE Websites -- All DOE Office Websites (Extended Search)

Home Teams Low-Level Radio Frequency Magnet Power Supplies, Pulsed Power Radio Frequency, High Voltage Technologies Radio Frequency Operations CONTACTS Group Leader Dan Rees Deputy...

320

Frequency Control Performance Measurement and Requirements  

E-Print Network (OSTI)

power systems operations could significantly influence primary frequency control.power system operations could not significantly influence primary frequency control.power system operations. Determination of frequency control

Illian, Howard F.

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "frequency drives vfds" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Infrastructure Failure - Types and Frequency  

U.S. Energy Information Administration (EIA)

Infrastructure Failure - Types and Frequency. Small events that have no impact on supplies Events that require supply/demand responses Events that result in a ...

322

Time and Frequency Division Homepage  

Science Conference Proceedings (OSTI)

... Controlled ClocksTelephone TimeDivision HistoryFrequently Asked Questions (FAQ)Time and Frequency from A to Z: An illustrated glossaryA Walk ...

2013-12-27T23:59:59.000Z

323

Dynamic frequency allocation in fractional frequency reused OFDMA networks  

Science Conference Proceedings (OSTI)

This paper proposes a dynamic fractional frequency reused cell architecture that simplifies the problem of subcarrier allocation with frequency reuse in multicell OFDMA networks. The architecture divides the cell surface into two overlapping geographical ... Keywords: 3G, cellular networks, cross-layer adaptation, data networks, mobile communication systems, opportunistic scheduling, wireless communication

Syed Hussain Ali; Victor C. M. Leung

2009-08-01T23:59:59.000Z

324

Winds of M- and S-type AGB stars: an unorthodox suggestion for the driving mechanism  

E-Print Network (OSTI)

Current knowledge suggests that the dust-driven wind scenario provides a realistic framework for understanding mass loss from C-rich AGB stars. For M-type objects, however, recent detailed models demonstrate that radiation pressure on silicate grains is not sufficient to drive the observed winds, contrary to previous expectations. In this paper, we suggest an alternative mechanism for the mass-loss of M-type AGB stars, involving the formation of both carbon and silicate grains due to non-equilibrium effects, and we study the viability of this scenario. We model the dynamical atmospheres and winds of AGB stars by solving the coupled system of frequency-dependent radiation hydrodynamics and time-dependent dust formation, using a parameterized description of non-equilibrium effects in the gas phase. This approach allows us to assess under which circumstances it is possible to drive winds with small amounts of carbon dust and to get silicate grains forming in these outflows at the same time. The properties of the resulting wind models, such as mass loss rates and outflow velocities, are well within the observed limits for M-type AGB stars. Furthermore, according to our results, it is quite unlikely that significant amounts of silicate grains will condense in a wind driven by a force totally unrelated to dust formation, as the conditions in the upper atmosphere and wind acceleration region put strong constraints on grain growth. The proposed scenario provides a natural explanation for the observed similarities in wind properties of M-type and C-type AGB stars and implies a smooth transition for stars with increasing carbon abundance, from solar-composition to C-rich AGB stars, possibly solving the long-standing problem of the driving mechanism for stars with C/O close to one.

S. Hoefner; A. C. Andersen

2007-02-16T23:59:59.000Z

325

A Novel MagPipe Pipeline transportation system using linear motor drives  

Science Conference Proceedings (OSTI)

A novel capsule pipeline transportation system using linear motor drives, called Magplane MagPipe, is under development with the intention to replace trucks and railways for hauling materials from the mine to the rail head, power plant, or processing plant with reduced operating cost and energy consumption. The initial demonstration of a MagPipe line in Inner Mongolia will be a 500-m-long double-pipe coal transport system with the design transportation capacity of 3 Mega-Mg per year. The pipeline consists of 6-m-long plastic pipe modules with an I-beam suspension system inside the pipe to carry sets of five coupled capsules. The pipe will also contain noncontinuous motor winding modules spaced at 50-m intervals. A set of Halbach-arrayed permanent magnets on the bottom of the capsules interact with the linear motor windings to provide propulsion. The motor is driven by variable frequency drives outside the pipe to control the speed. This paper briefly describes the overall MagPipe pipeline transportation system, including the preliminary conclusions of the linear synchronous motor analysis.

Fang, J.R.; Montgomery, D.B.; Roderick, L. [Magplane Technology Inc., Littleton, MA (United States)

2009-11-15T23:59:59.000Z

326

Stabilized radio-frequency quadrupole  

DOE Patents (OSTI)

A long-vane stabilized radio frequency resonator for accelerating charged particles and including means defining a radio frequency resonator cavity, a plurality of long vanes mounted in the defining means for dividing the cavity into sections, and means interconnecting opposing ones of the plurality of vanes for stabilizing the resonator.

Lancaster, H.D.; Fugitt, J.A.; Howard, D.R.

1982-09-29T23:59:59.000Z

327

Method of driving liquid flow at or near the free surface using magnetic microparticles  

DOE Patents (OSTI)

The present invention provides a method of driving liquid flow at or near a free surface using self-assembled structures composed of magnetic particles subjected to an external AC magnetic field. A plurality of magnetic particles are supported at or near a free surface of liquid by surface tension or buoyancy force. An AC magnetic field traverses the free surface and dipole-dipole interaction between particles produces in self-assembled snake structures which oscillate at the frequency of the traverse AC magnetic field. The snake structures independently move across the free surface and may merge with other snake structures or break up and coalesce into additional snake structures experiencing independent movement across the liquid surface. During this process, the snake structures produce asymmetric flow vortices across substantially the entirety of the free surface, effectuating liquid flow across the free surface.

Snezhko, Oleksiy (Woodridge, IL); Aronson, Igor (Darien, IL); Kwok, Wai-Kwong (Evanston, IL); Belkin, Maxim V. (Woodridge, IL)

2011-10-11T23:59:59.000Z

328

Frequency Conversion of Entangled State  

E-Print Network (OSTI)

The quantum characteristics of sum-frequency process in an optical cavity with an input signal optical beam, which is a half of entangled optical beams, are analyzed. The calculated results show that the quantum properties of the signal beam can be maintained after its frequency is conversed during the intracavity nonlinear optical interaction. The frequency-conversed output signal beam is still in an entangled state with the retained other half of initial entangled beams. The resultant quantum correlation spectra and the parametric dependences of the correlations on the initial squeezing factor, the optical losses and the pump power of the sum-frequency cavity are calculated. The proposed system for the frequency conversion of entangled state can be used in quantum communication network and the calculated results can provide direct references for the design of experimental systems.

Aihong Tan; Xiaojun Jia; Changde Xie

2006-03-01T23:59:59.000Z

329

General Interest NIST Time and Frequency Publications  

Science Conference Proceedings (OSTI)

... Time and Frequency Users Manual A detailed ... Fundamentals of Time and Frequency An overview of ... Lombardi, The Mechatronics Handbook, 2001. ...

2012-01-31T23:59:59.000Z

330

High Frequency Power Modulation - TRIMET Smelters Provide ...  

Science Conference Proceedings (OSTI)

Presentation Title, High Frequency Power Modulation - TRIMET Smelters Provide Primary Control Power for Stabilizing the Frequency in the Electricity Grid.

331

Computer-Aided Engineering for Electric Drive Vehicle Batteries (CAEBAT) (Presentation)  

DOE Green Energy (OSTI)

This presentation describes NREL's computer aided engineering program for electric drive vehicle batteries.

Pesaran, A. A.

2011-05-01T23:59:59.000Z

332

Students' Clean Tech Projects: Driving Commercial Success | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Students' Clean Tech Projects: Driving Commercial Success Students' Clean Tech Projects: Driving Commercial Success Students' Clean Tech Projects: Driving Commercial Success October 6, 2011 - 3:20pm Addthis UCSD Ph.D. candidate (structural engineering) and von Liebig Fellow Arun Manohar demonstrates unique Enhanced Infrared Thermography algorithm to identify structural defects in composite wind turbine plates. | Image Courtesy of the San Diego Renewable Energy Fellowship. UCSD Ph.D. candidate (structural engineering) and von Liebig Fellow Arun Manohar demonstrates unique Enhanced Infrared Thermography algorithm to identify structural defects in composite wind turbine plates. | Image Courtesy of the San Diego Renewable Energy Fellowship. Sarah Jane Maxted Special Assistant, Office of Energy Efficiency & Renewable Energy

333

Agriculture and Energy Departments Announce New Investments to Drive  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Agriculture and Energy Departments Announce New Investments to Agriculture and Energy Departments Announce New Investments to Drive Innovations in Biofuels and Biobased Products Agriculture and Energy Departments Announce New Investments to Drive Innovations in Biofuels and Biobased Products July 25, 2012 - 1:37pm Addthis News Media Contact (202) 586-4940 WASHINGTON - As part of the Obama Administration's all-of-the-above strategy to enhance U.S. energy security, reduce America's reliance on imported oil and leverage our domestic energy supply, while also supporting rural economies, the U.S. Departments of Agriculture (USDA) and Energy today announced a $41 million investment in 13 projects that will drive more efficient biofuels production and feedstock improvements. "If we want to develop affordable alternatives for oil and gasoline that

334

Secretary Moniz Announces New Biofuels Projects to Drive Cost Reductions,  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Moniz Announces New Biofuels Projects to Drive Cost Moniz Announces New Biofuels Projects to Drive Cost Reductions, Technological Breakthroughs Secretary Moniz Announces New Biofuels Projects to Drive Cost Reductions, Technological Breakthroughs August 1, 2013 - 2:00pm Addthis News Media Contact (202) 586-4940 WASHINGTON - During remarks at the Energy Department's Biomass 2013 annual conference, Secretary Moniz today highlighted the important role biofuels play in the Administration's Climate Action Plan to increase our energy security and reduce greenhouse gas emissions from the transportation sector. Secretary Moniz also announced over $22 million in new investments to help develop cost-competitive algae fuels and streamline the biomass feedstock supply chain for advanced biofuels. "By partnering with industry and universities, we can help make clean,

335

Test Drive EIA's New Interactive Electricity Data Browser | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Test Drive EIA's New Interactive Electricity Data Browser Test Drive EIA's New Interactive Electricity Data Browser Test Drive EIA's New Interactive Electricity Data Browser April 6, 2012 - 4:27pm Addthis Check out EIA’s beta test site and leave your feedback. Check out EIA's beta test site and leave your feedback. April Saylor April Saylor Former Digital Outreach Strategist, Office of Public Affairs The Energy Information Administration (EIA) - the statistical and analytical agency within the Energy Department - recently launched an interactive electricity data browser on a test website that allows users to search in one location much of EIA's electricity data and to customize it to meet their information needs. As an experimental product, EIA is encouraging the public to submit

336

MHK Technologies/Direct Drive Power Generation Buoy | Open Energy  

Open Energy Info (EERE)

Power Generation Buoy Power Generation Buoy < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Direct Drive Power Generation Buoy.jpg Technology Profile Primary Organization Columbia Power Technologies Inc Technology Resource Click here Wave Technology Type Click here Point Absorber - Floating Technology Readiness Level Click here TRL 4 Proof of Concept Technology Description Direct drive point absorber In 2005 Oregon State University entered into an exclusive license agreement with Columbia Power Technologies to jointly develop a direct drive wave energy conversion device Designed to be anchored 2 5 miles off the Oregon coast in 130 feet of water it uses the rise and fall of ocean waves to generate electricity Mooring Configuration Anchored

337

Intergral Drive Systems AG IDS | Open Energy Information  

Open Energy Info (EERE)

Intergral Drive Systems AG IDS Intergral Drive Systems AG IDS Jump to: navigation, search Name Intergral Drive Systems AG (IDS) Place Zurich, Swaziland Zip CH-8005 Sector Wind energy Product Zurich based producer of power electronics systems for wind turbines, PV plants, and propulsion systems. Coordinates 47.37706°, 8.53955° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":47.37706,"lon":8.53955,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

338

The drive toward hydrogen vehicles just got shorter  

NLE Websites -- All DOE Office Websites (Extended Search)

The drive toward hydrogen vehicles just got shorter The drive toward hydrogen vehicles just got shorter The drive toward hydrogen vehicles just got shorter Researchers have revealed a new single-stage method for recharging the hydrogen storage compound ammonia borane. March 21, 2011 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Contact

339

Secretary Moniz Announces New Biofuels Projects to Drive Cost Reductions,  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Secretary Moniz Announces New Biofuels Projects to Drive Cost Secretary Moniz Announces New Biofuels Projects to Drive Cost Reductions, Technological Breakthroughs Secretary Moniz Announces New Biofuels Projects to Drive Cost Reductions, Technological Breakthroughs August 1, 2013 - 2:00pm Addthis News Media Contact (202) 586-4940 WASHINGTON - During remarks at the Energy Department's Biomass 2013 annual conference, Secretary Moniz today highlighted the important role biofuels play in the Administration's Climate Action Plan to increase our energy security and reduce greenhouse gas emissions from the transportation sector. Secretary Moniz also announced over $22 million in new investments to help develop cost-competitive algae fuels and streamline the biomass feedstock supply chain for advanced biofuels. "By partnering with industry and universities, we can help make clean,

340

Agriculture and Energy Departments Announce New Investments to Drive  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Agriculture and Energy Departments Announce New Investments to Agriculture and Energy Departments Announce New Investments to Drive Innovations in Biofuels and Biobased Products Agriculture and Energy Departments Announce New Investments to Drive Innovations in Biofuels and Biobased Products July 25, 2012 - 1:37pm Addthis News Media Contact (202) 586-4940 WASHINGTON - As part of the Obama Administration's all-of-the-above strategy to enhance U.S. energy security, reduce America's reliance on imported oil and leverage our domestic energy supply, while also supporting rural economies, the U.S. Departments of Agriculture (USDA) and Energy today announced a $41 million investment in 13 projects that will drive more efficient biofuels production and feedstock improvements. "If we want to develop affordable alternatives for oil and gasoline that

Note: This page contains sample records for the topic "frequency drives vfds" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Driving the National Parks Forward | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Driving the National Parks Forward Driving the National Parks Forward Driving the National Parks Forward June 19, 2012 - 4:02pm Addthis Propane shuttle buses used to transport visitors at Mammoth Cave National Park. | Photo courtesy of the National Parks Service. Propane shuttle buses used to transport visitors at Mammoth Cave National Park. | Photo courtesy of the National Parks Service. Shannon Brescher Shea Communications Manager, Clean Cities Program What does this project do? The Energy Department is partnering with the National Park Service to increase alternative fuel use of vehicle fleets at national parks around the country. Describing America's National Parks, historian Wallace Stegnar once said they were "the best idea we ever had." But like any good idea, the parks are constantly adapting to meet the needs of the present. Clean Cities,

342

Student Entrepreneurs Driving Loyola Biodiesel Program | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Student Entrepreneurs Driving Loyola Biodiesel Program Student Entrepreneurs Driving Loyola Biodiesel Program Student Entrepreneurs Driving Loyola Biodiesel Program August 19, 2010 - 11:00am Addthis Zach Waickman works on a biodiesel project at Loyola University. | Photo courtesy of Mark Beane, Loyola University Zach Waickman works on a biodiesel project at Loyola University. | Photo courtesy of Mark Beane, Loyola University Maya Payne Smart Former Writer for Energy Empowers, EERE Students convert used dining hall cooking oil into biodiesel The alternative fuel to supply 2,500 gallons of fuel to campus shuttles Lab-created biodiesel and biosoap sales support biofuels education program Communications major Zachary Waickman had no idea what he was getting into when he signed up for Loyola University's undergraduate Solutions to

343

Energy Department Announces $60 Million to Drive Affordable, Efficient  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

60 Million to Drive Affordable, 60 Million to Drive Affordable, Efficient Solar Power Energy Department Announces $60 Million to Drive Affordable, Efficient Solar Power October 22, 2013 - 11:45am Addthis News Media Contact (202) 586-4940 WASHINGTON - Building on President Obama's broad-based plan to cut carbon pollution and support clean energy innovation across the country, Energy Secretary Moniz announced today about $60 million to support innovative solar energy research and development. As part of the Department's SunShot Initiative, these awards will help lower the cost of solar electricity, advance seamless grid integration and support a growing U.S. solar workforce. "The tremendous growth in the U.S. solar industry over the past few years is helping to pave the way to a cleaner, more sustainable energy future

344

Thirteen States Receive Energy Department Awards to Drive Greater Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

States Receive Energy Department Awards to Drive Greater States Receive Energy Department Awards to Drive Greater Energy Efficiency, Save Money Thirteen States Receive Energy Department Awards to Drive Greater Energy Efficiency, Save Money November 26, 2013 - 2:44pm Addthis News Media Contact (202) 586-4940 WASHINGTON - Building on the Obama Administration's efforts to double energy productivity by 2030 and help communities save on energy bills, the Energy Department today awarded nearly $4 million to 13 states to increase statewide energy savings and boost the energy efficiency of public institutions, local governments and industrial sectors. The Department's State Energy Program has a long history in assisting states in saving energy and deploying new clean energy technologies. "Smart, cost-effective investments in energy efficiency are helping

345

Radial-Gap Permanent Magnet Motor and Drive Research FY 2004  

SciTech Connect

The objective of this task was to study permanent magnet (PM) radial-gap traction drive systems that could meet the U.S. Department of Energy FreedomCAR Program's 2010 goals to expose weaknesses or identify strengths. Initially, the approach was to compare attributes such as physical deformations during operation, performance (torque, power, efficiency versus speed), material requirements (strength), material costs, manufacturability, weight, power density, specific power, reliability, and drivability for specific motors. Three motors selected were the commercially available 60-kW radial-gap surface-mounted PM motor manufactured by UQM Technologies, Inc.; a hypothetical PM motor with rotor-supported magnets similar to the Honda MCF-21; and Delphi's automotive electric machine drive motor, whose rotor is a ferromagnetic cylinder, held at one end by a shaft that supports the magnets on its inner surface. Potential problems have appeared related to PM motors, such as (1) high no-load spin losses and high operational power losses, probably from eddy current losses in the rotor; (2) the undemonstrated dual mode inverter control (DMIC) for driving a brushless dc motor (BDCM) (UQM and Delphi motors); (3) uncertainty about the potential for reducing current with DMIC; and (4) uncertainty about the relation between material requirements and maximum rotor speed. Therefore, the approach was changed to study in detail three of the comparison attributes: drivability, performance, and material requirements. Drivability and related problems were examined by demonstrating that DMIC may be used to drive an 18-pole 30-kW PM motor to 6000 rpm, where the maximum electrical frequency is 900 Hz. An available axial-gap test motor with 18 poles was used because its control is identical to that of a radial gap PM motor. Performance was analytically examined, which led to a derivation showing that DMIC controls a PM motor so that the motor uses minimum current to produce any power regardless of speed for relative speeds, n = {omega}/{omega}{sub base} {ge} 2. Performance was also examined with efficiency measurements during the 30-kW PM motor test. Material requirements were examined with finite-element analyses (FEA) to determine the speed and location where yield starts and the corresponding deformations and stresses.

McKeever, J.W.

2005-02-11T23:59:59.000Z

346

Small Businesses Helping Drive Economy: Clean Energy, Clean Sites  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Small Businesses Helping Drive Economy: Clean Energy, Clean Sites Small Businesses Helping Drive Economy: Clean Energy, Clean Sites "We should start where most new jobs do - in small businesses, companies that begin when an entrepreneur takes a chance on a dream, or a worker decides its time she became her own boss." --- President Obama, State of the Union Address, January 27, 2010 "Jobs will be our number one focus in 2010. And we're going to start where most new jobs do - with small businesses." --- President Obama, Nashua, New Hampshire, February 2, 2010

347

ELECTRON CYCLOTRON CURRENT DRIVE EFFICIENCY IN GENERAL TOKAMAK GEOMETRY  

SciTech Connect

Green's-function techniques are used to calculate electron cyclotron current drive (ECCD) efficiency in general tokamak geometry in the low-collisionality regime. Fully relativistic electron dynamics is employed in the theoretical formulation. The high-velocity collision model is used to model Coulomb collisions and a simplified quasi-linear rf diffusion operator describes wave-particle interactions. The approximate analytic solutions which are benchmarked with a widely used ECCD model, facilitate time-dependent simulations of tokamak operational scenarios using the non-inductive current drive of electron cyclotron waves.

LIN-LUI,Y.R; CHAN,V.S; PRATER,R

2003-03-01T23:59:59.000Z

348

Frequency multiplying oscillator with an electron beam accelerated in a drift space  

Science Conference Proceedings (OSTI)

In a uniform acceleration region, the behavior of a velocity-modulated electron beam has been analyzed using a particle-in-cell code. By making use of one of the accelerated harmonic components of the velocity-modulated electron beam, we demonstrate a frequency multiplying oscillator for a compact THz emitter, which employs multiple electron beams and a higher order mode resonator to modulate the electron beam without an additional driving source.

Jang, Kyu-Ha; Lee, Kitae; Hee Park, Seong; Uk Jeong, Young [WCI Center for Quantum Beam-based Radiation Research, Korea Atomic Energy Research Institute, 1045 Deadeok, Yuseong, Daejeon 305-353 (Korea, Republic of); Miginsky, S. [WCI Center for Quantum Beam-based Radiation Research, Korea Atomic Energy Research Institute, 1045 Deadeok, Yuseong, Daejeon 305-353 (Korea, Republic of); Budker Institute of Nuclear Physics, SB RAS, Academician Lavrentyev St. 11, Novosibrisk (Russian Federation)

2012-07-02T23:59:59.000Z

349

Observation of ion cyclotron range of frequencies mode conversion plasma flow drive on Alcator C-Mod  

E-Print Network (OSTI)

At modest [superscript 3]He levels (n[subscript 3He]/n[subscript e]~8%–12%), in relatively low density D([superscript 3]He) plasmas, [overline n]eheated with 50 MHz rf power at ...

Lin, Yijun

350

AUTO ID FUTURE - FREQUENCY AGNOSTIC  

E-Print Network (OSTI)

Identification of information is one key to the development of intelligent decision systems of the future. Frequency agnostic automatic identification is only one step in the physical world to make physical objects identify ...

DATTA, SHOUMEN

351

Frequency regulator for synchronous generators  

DOE Patents (OSTI)

The present invention is directed to a novel frequency regulator which controls a generator output frequency for variations in both the input power to the generator and the power supplied to an uncontrolled external load. The present invention further includes over current and current balance protection devices which are relatively inexpensive to manufacture, which may be encapsulated to provide protection from the operating environment and which respond more quickly than previously known electromechanical devices.

Karlicek, Robert F. (1920 Camino Centroloma, Fullerton, CA 92633)

1982-01-01T23:59:59.000Z

352

Frequency regulator for synchronous generators  

DOE Patents (OSTI)

The present invention is directed to a novel frequency regulator which controls a generator output frequency for variations in both the input power to the generator and the power supplied to an uncontrolled external load. The present invention further includes over current and current balance protection devices which are relatively inexpensive to manufacture, which may be encapsulated to provide protection from the operating environment and which respond more quickly than previously known electromechanical devices. 11 figs.

Karlicek, R.F.

1982-08-10T23:59:59.000Z

353

Two frequency ICRF heating of D-T plasmas on TFTR  

Science Conference Proceedings (OSTI)

Modifications have been made to allow two of the ICRF antennas (bays L and M) on TFTR to operate at either of two frequencies, 43 MHz or 64 MHz. This was accomplished by lengthening the resonant loops feeding the antennas (2{lambda} at 43 MHz, 3{lambda} at 64 MHz) and replacing the conventional quarter wave impedance transformers with a tapered impedance design. The other two antennas (bays K and N) will operate at a fixed frequency, 43 MHz. The two frequency operation allows a combination of {sup 3}He-minority (or T second harmonic) and H-minority heating at full toroidal field on TFIR. Multiple frequency operation may also be useful in direct electron heating and current drive experiments. Other modifications have been made which are expected to permit arbitrary phasing between the current straps on bays M and L. The system design of the antenna, resonant loops and impedance matching system as well as preliminary TFTR results are discussed.

Rogers, J.H.; Majeski, R.; Wilson, J.R.; Hosea, J.C.; Schilling, G.; Stevens, J. [Princeton Univ., NJ (United States). Plasma Physics Lab.; Ho, Y.L. [Science Applications International Corp., San Diego, CA (United States); Raman, S. [Michigan Univ., Ann Arbor, MI (United States); Rasmussen, D.A. [Oak Ridge National Lab., TN (United States)

1993-11-01T23:59:59.000Z

354

Relativistic theory of frequency blue-shift of an intense ionizing laser beam in a plasma  

SciTech Connect

Frequency up-conversion of a laser beam causing gas ionization in a cavity is considered in a fully relativistic fashion. A simple ionization model, based on one-photon and multiphoton processes is used. A Vlasov fully nonlinear and ionization-model independent description is used in calculating the current which drives the wave equation for the electric field. The evolution of the wave frequency and its upshift are contrasted with those obtained in the nonrelativistic limit. It is found that the nonrelativistic treatment overestimates the frequency upshift by a factor more than two. Purely relativistic effects, such as a significant frequency modulation and a respective temporal pulse compression, are observed in the exact case.

Hizanidis, K.; Vomvoridis, J.L. [National Technical Univ. of Athens (Greece); Mendonca, J.T. [Instituto Superior Tecnico, Lisbon (Portugal). Dept. of Physics; Frantzeskakis, D.J. [Univ. of Athens (Greece). Dept. of Physics

1996-04-01T23:59:59.000Z

355

Drive cycle analysis of the performance of hybrid electric vehicles  

Science Conference Proceedings (OSTI)

This paper presents a drive cycle analysis of hybrid electric vehicle power train configurations. Based on fuel economy and emissions factors, a tradeoff between conventional, series hybrid, parallel hybrid, and a parallel-series hybrid is drawn. The ... Keywords: emissions, fuel consumption, hybrid electric vehicles, modeling and simulation

Behnam Ganji; Abbas Z. Kouzani; H. M. Trinh

2010-09-01T23:59:59.000Z

356

TTRDC - Light Duty E-Drive Vehicles Monthly Sales Updates  

NLE Websites -- All DOE Office Websites (Extended Search)

Light Duty Electric Drive Vehicles Monthly Sales Updates Currently available electric-drive vehicles (EDV) in the U.S market include hybrid electric vehicles (HEV), plug-in hybrid electric vehicles (PHEV), and all electric vehicles (AEV). Plug-in Vehicles (PEV) include both PHEV and AEV. HEVs debuted in the U.S. market in December 1999 with 17 sales of the first-generation Honda Insight, while the first PHEV (Chevrolet Volt) and AEV (Nissan Leaf) most recently debuted in December 2010. Electric drive vehicles are offered in several car and SUV models, and a few pickup and van models. Historical sales of HEV, PHEV, and AEV are compiled by Argonne's Center for Transportation Research and reported to the U.S. Department of Energy's Vehicle Technology Program Office each month. These sales are shown in Figures 1, 2 and 3. Figure 1 shows monthly new PHEV and AEV sales by model. Figure 2 shows yearly new HEV sales by model. Figure 3 shows electric drive vehicles sales share of total light-duty vehicle (LDV) sales since 1999. Figure 4 shows HEV and PEV sales change with gasoline price..

357

DRIVE: a reconfigurable testbed for advanced vehicular services and communications  

Science Conference Proceedings (OSTI)

This paper introduces DRIVE, a reconfigurable demonstrator that will allow for experimental validation of vehicular networking research, as well as proof of concept and realistic performance studies of advanced services for vehicular users. The testbed ... Keywords: VANET, added-value services, carPC, demonstrator, software platform, vehicular networks, wireless networks

Carolina Pinart; Pilar Sanz; Iván Lequerica; Daniel García; Isaac Barona; Diego Sánchez-Aparisi

2008-03-01T23:59:59.000Z

358

DRIVING DIRECTIONS South Carolina Commissioner's School for Agriculture  

E-Print Network (OSTI)

Page 6 DRIVING DIRECTIONS South Carolina Commissioner's School for Agriculture Directions://www.clemson.edu/campusmap/index.html Directions from Interstate 85 Take exit 19B, Clemson University (Hwy 76/28). Merge onto Hwy 76/28 and follow sign, go to the right. Follow the signs to the registration area in Barnett Hall. Directions to Friday

Bolding, M. Chad

359

Driving Secure Software Development Experience in a Diverse Product Environment  

Science Conference Proceedings (OSTI)

Siemens' central security team drives secure software development across a diverse product portfolio. From factory automation to wind turbines, Siemens builds security in by activities including standardizing roles and responsibilities, threat and risk ... Keywords: Siemens, secure software development, risk analysis, threat analysis, software engineering

Barbara Fichtinger; Frances Paulisch; Peter Panholzer

2012-03-01T23:59:59.000Z

360

Mr. Tad W. Patzek 13331 Trail Drive Street  

E-Print Network (OSTI)

Mr. Tad W. Patzek 13331 Trail Drive Street Austin, Texas 78737 Dear Mr. Patzek: THE SECRETARY OF THE INTERIOR WASHINGTON MAR 11 2011 It is my pleasure to appoint you as a member of the Ocean Energy Safety of the Bureau of Ocean Energy Management, Regulation and Enforcement on matters and actions relating to offshore

Patzek, Tadeusz W.

Note: This page contains sample records for the topic "frequency drives vfds" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

NCEM National Center for Electron Microscopy: Microscope Driving...  

NLE Websites -- All DOE Office Websites (Extended Search)

Microscope Driving Tests 3010 test.pdf CM 200 test.pdf CM 300 test.pdf Libra test.pdf FIB test.pdf Tecnai test.pdf TEAM 0.5 test.pdf TEAM I test.pdf...

362

Progress in Direct-Drive Inertial Confinement Fusion Research  

E-Print Network (OSTI)

Temperature Radius Massdensity Hot spot Burn wave Ablator DT ice #12;A-beam smoothing is critical to ICF ignition I1771 EO phase modulator Grating Amplifiers Grating Focusing optics Angular dispersion f Oscillator Phase Plates1 Measured far field of an OMEGA indirect-drive phase plate

363

Global biofuel drive raises risk of eviction for African farmers  

E-Print Network (OSTI)

Global biofuel drive raises risk of eviction for African farmers African farmers risk being forced from their lands by investors or government projects as global demand for biofuels encourages changes at risk if African farmland is turned over to growing crops for biofuel. With growing pressure to find

364

Measurement of coupling resonance driving terms with the AC dipole  

Science Conference Proceedings (OSTI)

Resonance driving terms for linear coupled betatron motion in a synchrotron ring can be determined from corresponding spectral lines of an excited coherent beam motion. An AC dipole is one of instruments to excite such a motion. When a coherent motion is excited with an AC dipole, measured Courant-Snyder parameters and betatron phase advance have apparent modulations, as if there is an additional quadrupole field at the location of the AC dipole. Hence, measurements of these parameters using the AC dipole require a proper interpretation of observed quantities. The situation is similar in measurements of resonance driving terms using the AC dipole. In this note, we derive an expression of coupled betatron motion excited with two AC dipoles in presence of skew quadrupole fields, discuss an impact of this quadrupole like effect of the AC dipole on a measurement of coupling resonance driving terms, and present an analytical method to determine the coupling resonance driving terms from quantities observed using the AC dipole.

Miyamoto, R.

2010-10-01T23:59:59.000Z

365

BOOK DRIVE! Sponsored by Acacia, the Teaching Writing  

E-Print Network (OSTI)

BOOKS FOR TROOPS BOOK DRIVE! Sponsored by Acacia, the Teaching Writing Club, and the Creative Writing Club Help us collect books to send to U.S. soldiers stationed both at home and abroad! We will accept both new and used books and magazines. All genres are welcome

de Lijser, Peter

366

Physical model of a hybrid electric drive train  

E-Print Network (OSTI)

A motor and flywheel system was designed to simulate the dynamics of the electric drive train and inertial mass of a hybrid electric vehicle. The model will serve as a test bed for students in 2.672 to study the energy ...

Young, Brady W. (Brady William)

2006-01-01T23:59:59.000Z

367

Series Input Modular Architecture for Driving Multiple LEDs  

E-Print Network (OSTI)

, where each cell drives four 700 mA LEDs. Keywords ­ solid-state lighting, light emitting diodes, LED have been achieved over the past decade in solid state light emitting diodes (LEDs), leading to high, L. Zhou, G. Harbers, and M. Craford, "Status and future of high-power light-emitting diodes

368

Job security and fear: Do these drive our radiation guidelines  

SciTech Connect

This commentary asks why scientists want radiation standard setting at a level well below that at which any health related problem has been observed in a human being. The idea that job security and fear actually may drive radiation standards is presented as a possibility. 3 refs.

Thomas, R.G.

1994-01-01T23:59:59.000Z

369

Energy & Financial Markets: What Drives Crude Oil Prices ...  

U.S. Energy Information Administration (EIA)

Search EIA.gov. A-Z Index; A-Z Index A B C D E F G H I J K L M N O P Q R S T U V W XYZ. Energy & Financial Markets What Drives Crude Oil Prices? ...

370

Alternative Fuels Data Center: New York Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: New York Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: New York Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: New York Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: New York Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: New York Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: New York Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type New York Laws and Incentives for Driving / Idling

371

Frequency  

Science Conference Proceedings (OSTI)

... noise terms are the result of environmental changes affecting ... respond to changes in environment, so this ... is probably of broadest concern, but some ...

2002-11-19T23:59:59.000Z

372

Advanced Biofuels: How Scientists are Engineering Bacteria to Help Drive  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Advanced Biofuels: How Scientists are Engineering Bacteria to Help Advanced Biofuels: How Scientists are Engineering Bacteria to Help Drive America Advanced Biofuels: How Scientists are Engineering Bacteria to Help Drive America December 6, 2011 - 2:12pm Addthis Strains of E. coli bacteria were engineered to digest switchgrass biomass and synthesize its sugars into gasoline, diesel and jet fuel. | Image courtesy of Berkeley Lab. Strains of E. coli bacteria were engineered to digest switchgrass biomass and synthesize its sugars into gasoline, diesel and jet fuel. | Image courtesy of Berkeley Lab. Liisa O'Neill Liisa O'Neill Former New Media Specialist, Office of Public Affairs Who knew Escherichia coli (E. coli) could help America reduce its dependence on foreign oil? A breakthrough with the bacteria could make it cheaper to produce fuel from switchgrass -- an advanced biofuel with the

373

Airport Drive, Missouri: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Drive, Missouri: Energy Resources Drive, Missouri: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 37.1425588°, -94.5107824° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":37.1425588,"lon":-94.5107824,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

374

Optimizing Consumer Utility Systems to Drive Engagement and Action  

NLE Websites -- All DOE Office Websites (Extended Search)

Optimizing Consumer Utility Systems to Drive Engagement and Action Optimizing Consumer Utility Systems to Drive Engagement and Action Speaker(s): Stephen Malloy V. Rory Jones Date: November 15, 2012 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Christopher Payne This presentation reviews a new software tool that recommends specific actions for homeowners and others to undertake to optimize their utility system configuration and operation. The tool, the "Utility System Optimizer" (USO), may be configured to optimize across all utilities (electricity, gas, water - and other fuels as propane, oil and wood) to meet objectives that are defined by the owner/operator (homeowner, retailer, etc.). Such objectives may be to maximize net wealth over time, to minimize carbon footprint for the best economics, to maximize health

375

Advanced Biofuels: How Scientists are Engineering Bacteria to Help Drive  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Advanced Biofuels: How Scientists are Engineering Bacteria to Help Advanced Biofuels: How Scientists are Engineering Bacteria to Help Drive America Advanced Biofuels: How Scientists are Engineering Bacteria to Help Drive America December 6, 2011 - 2:12pm Addthis Strains of E. coli bacteria were engineered to digest switchgrass biomass and synthesize its sugars into gasoline, diesel and jet fuel. | Image courtesy of Berkeley Lab. Strains of E. coli bacteria were engineered to digest switchgrass biomass and synthesize its sugars into gasoline, diesel and jet fuel. | Image courtesy of Berkeley Lab. Liisa O'Neill Liisa O'Neill Former New Media Specialist, Office of Public Affairs Who knew Escherichia coli (E. coli) could help America reduce its dependence on foreign oil? A breakthrough with the bacteria could make it cheaper to produce fuel from switchgrass -- an advanced biofuel with the

376

Operation of the APS photoinjector drive laser sytem  

NLE Websites -- All DOE Office Websites (Extended Search)

07 07 Rev. 1, June 2008 Operation of the APS Photoinjector Drive Laser System Yuelin Li Abstract The APS photoinjector drive laser system has been in operation since 1999 and is achieving a performance level exceeding the requirement of stable operation of the LEUTL FEL system. One remarkable number is the UV energy stability of better than 2% rms, sometimes less than 1% rms. This report summarizes the operation experience of the laser system and the improvements made along the way. We also outline the route of upgrade of the system and some frontier laser research and development opportunities in ultrabright electron beam generation. I. Introduction A photoinjector is the only way to generate the high-brightness beams required by fourth-

377

The Role of Telomere Dysfunction in Driving Genomic Instability  

NLE Websites -- All DOE Office Websites (Extended Search)

Telomere Dysfunction in Driving Genomic Instability Telomere Dysfunction in Driving Genomic Instability Susan M. Bailey, Eli S. Williams and Robert L. Ullrich The mechanistic role of radiation-induced genomic instability in radiation carcinogenesis is an attractive hypothesis that remains to be rigorously tested. There are few in vivo studies on which to base judgments, but work in our laboratory with mouse models of radiogenic mammary neoplasia provided the first indications that certain inductive forms of genetically predisposed genomic instability may contribute to tumor development. The central goal of this research project is to more firmly establish the mechanistic basis of this radiation-associated genomic instability and, from this, to assess whether such induced instability might play a major role in tumorigenesis at low doses of low LET radiation. In the case of

378

Driving for $1.14 Per Gallon | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

for $1.14 Per Gallon for $1.14 Per Gallon Driving for $1.14 Per Gallon June 11, 2013 - 7:30am Addthis News Media Contact (202) 586-4940 WASHINGTON - The Energy Department today launched the eGallon - a quick and simple way for consumers to compare the costs of fueling electric vehicles vs. driving on gasoline. Today's national average eGallon price is about $1.14, meaning that a typical electric vehicle could travel as far on $1.14 worth of electricity as a similar vehicle could travel on a gallon of gasoline. "Consumers can see gasoline prices posted at the corner gas station, but are left in the dark on the cost of fueling an electric vehicle. The eGallon will bring greater transparency to vehicle operating costs, and help drivers figure out how much they might save on fuel by choosing an

379

Current-Drive Efficiency in a Degenerate Plasma  

DOE Green Energy (OSTI)

a degenerate plasma, the rates of electron processes are much smaller than the classical model would predict, affecting the efficiencies of current generation by external non-inductive means, such as by electromagnetic radiation or intense ion beams. For electron-based mechanisms, the current-drive efficiency is higher than the classical prediction by more than a factor of 6 in a degenerate hydrogen plasma, mainly because the electron-electron collisions do not quickly slow down fast electrons. Moreover, electrons much faster than thermal speeds are more readily excited without exciting thermal electrons. In ion-based mechanisms of current drive, the efficiency is likewise enhanced due to the degeneracy effects, since the electron stopping power on slow ion beams is significantly reduced.

S. Son and N.J. Fisch

2005-11-01T23:59:59.000Z

380

PHYSICS OF ELCTRON CYCLOTRON CURRENT DRIVE ON DIII-D  

Science Conference Proceedings (OSTI)

OAK A271 PHYSICS OF ELCTRON CYCLOTRON CURRENT DRIVE ON DIII-D. Recent experiments on the DIII-D tokamak have focused on determining the effect of trapped particles on the electron cyclotron current drive (ECCD) efficiency. The measured ECCD efficiency increases as the deposition location is moved towards the inboard midplane or towards smaller minor radius for both co and counter injection. The measured ECCD efficiency also increases with increasing electron density and/or temperature. The experimental ECCD is compared to both the linear theory (Toray-GA) as well as a quasilinear Fokker-Planck model (CQL3D). The experimental ECCD is found to be in better agreement with the more complete Fokker-Planck calculation, especially for cases of high rf power density and/or loop voltage. The narrow width of the measured ECCD profile is consistent with only low levels of radial transport for the current carrying electrons.

PETTY,CC; PRATER,R; LUCE,TC; ELLIS,RA; HARVEY,RW; KINSEY,JE; LAO,LL; LOHR,J; MAKOWSKI,MA

2002-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "frequency drives vfds" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Power and Energy Measurements Low Frequency  

Science Conference Proceedings (OSTI)

... Power and Energy Measurements, Low-Frequency. Rate our Services. ... Power and Energy Measurements, Low-Frequency (56200C-56202C). ...

2013-06-24T23:59:59.000Z

382

Case Study: Driving Operational Changes Through an Energy Monitoring System  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

monthly reporting, checklists, monthly reporting, checklists, energy targets, and feedback leads to effective organizational change. Driving Operational Changes Through an Energy Monitoring System In 2006, IBM launched a corporate efficiency program focused on basic operation im- provements in its diverse and far-flung real estate operations. The efficiency program had behavior change as a major focus. Examples of changes include the following: * IBM implemented a monthly energy reporting system for its various facilities where

383

Extended cage adjustable speed electric motors and drive packages  

DOE Patents (OSTI)

The rotor cage of a motor is extended, a second stator is coupled to this extended rotor cage, and the windings have the same number of poles. The motor torque and speed can be controlled by either injecting energy into or extracting energy out from the rotor cage. The motor produces less harmonics than existing doubly-fed motors. Consequently, a new type of low cost, high efficiency drive is produced.

Hsu, John S. (Oak Ridge, TN)

1999-01-01T23:59:59.000Z

384

Plasma driving system for a Tokamak Experimental Power Reactor  

DOE Green Energy (OSTI)

The Tokamak Experimental Power Reactor is a device designed to operate at or near ignition with the potential for production of net power. It utilizes technology which either exists or can be achieved with a modest extrapolation from the present. The plasma driving systems, and their implications for energy storage and transfer technology are analyzed utilizing dynamic simulation of the plasma startup, burn and shutdown.

Mills, F.E.; Brooks, J.N.; Evans, K. Jr.; Kustom, R.L.; Stacey, W.M. Jr.; Wang, S.T.

1976-01-01T23:59:59.000Z

385

Adjustable Speed Drive (ASD) System Design Specifications Guide Book  

Science Conference Proceedings (OSTI)

This report presents a comprehensive assessment of the applications of adjustable speed drives (ASDs) in motor-driven systems in commercial and industrial environments. The power electronics-type ASD is continuously improving process control. An ASD controls fluid, gas, material, or parts flow by controlling motor speed.BackgroundIn the past, conventional process flow control for liquids and gases used valves, vanes, dampers, or registers. In these systems, ...

2012-11-28T23:59:59.000Z

386

Extended cage adjustable speed electric motors and drive packages  

DOE Patents (OSTI)

The rotor cage of a motor is extended, a second stator is coupled to this extended rotor cage, and the windings have the same number of poles. The motor torque and speed can be controlled by either injecting energy into or extracting energy out from the rotor cage. The motor produces less harmonics than existing doubly-fed motors. Consequently, a new type of low cost, high efficiency drive is produced. 12 figs.

Hsu, J.S.

1999-03-23T23:59:59.000Z

387

What's driving Gigabit/sec channels  

SciTech Connect

This paper summarizes the rationale for the drive towards Gigabit/sec communications for individual users. A description is given of a resulting prototype LAN which will deliver this capability to each user. The prototype is being built for the Lawrence Livermore National Laboratory. It will be delivered this winter and should be available for users by the end of the first quarter of next year. 19 refs., 8 figs.

Rupert, P.R.

1991-09-01T23:59:59.000Z

388

Permanent magnet quadrupoles for the CLIC Drive Beam decelerator  

E-Print Network (OSTI)

STFC in collaboration with CERN has developed a new type of adjustable permanent magnet based quadrupole for the CLIC Drive Beam Decelerator. It uses vertical movement of the permanent magnets to achieve an integrated gradient range of 3.6-14.6T, which will allow it to be used for the first 60% of the decelerator line. Construction of a prototype of this magnet has begun; following this, it will be measured magnetically at CERN and Daresbury Laboratory.

Shepherd, Ben; Collomb, Norbert

2012-01-01T23:59:59.000Z

389

Dielectric Wakefield Accelerator to drive the future FEL Light Source.  

SciTech Connect

X-ray free-electron lasers (FELs) are expensive instruments and a large part of the cost of the entire facility is driven by the accelerator. Using a high-energy gain dielectric wake-field accelerator (DWA) instead of the conventional accelerator may provide a significant cost saving and reduction of the facility size. In this article, we investigate using a collinear dielectric wakefield accelerator to provide a high repetition rate, high current, high energy beam to drive a future FEL x-ray light source. As an initial case study, a {approx}100 MV/m loaded gradient, 850 GHz quartz dielectric based 2-stage, wakefield accelerator is proposed to generate a main electron beam of 8 GeV, 50 pC/bunch, {approx}1.2 kA of peak current, 10 x 10 kHz (10 beamlines) in just 100 meters with the fill factor and beam loading considered. This scheme provides 10 parallel main beams with one 100 kHz drive beam. A drive-to-main beam efficiency {approx}38.5% can be achieved with an advanced transformer ratio enhancement technique. rf power dissipation in the structure is only 5 W/cm{sup 2} in the high repetition rate, high gradient operation mode, which is in the range of advanced water cooling capability. Details of study presented in the article include the overall layout, the transform ratio enhancement scheme used to increase the drive to main beam efficiency, main wakefield linac design, cooling of the structure, etc.

Jing, C.; Power, J.; Zholents, A. (Accelerator Systems Division (APS)); ( HEP); (LLC)

2011-04-20T23:59:59.000Z

390

Frequency Dependence in Forecast Skill  

Science Conference Proceedings (OSTI)

A method is proposed to calculate measures of forecast skill for high, medium and low temporal frequency variations in the atmosphere. This method is applied to a series of 128 consecutive 1 to 10-day forecasts produced at NMC with their ...

H. M. van Den Dool; Suranjana Saha

1990-01-01T23:59:59.000Z

391

Frequency agile optical parametric oscillator  

DOE Patents (OSTI)

The frequency agile OPO device converts a fixed wavelength pump laser beam to arbitrary wavelengths within a specified range with pulse to pulse agility, at a rate limited only by the repetition rate of the pump laser. Uses of this invention include Laser radar, LIDAR, active remote sensing of effluents/pollutants, environmental monitoring, antisensor lasers, and spectroscopy.

Velsko, Stephan P. (Livermore, CA)

1998-01-01T23:59:59.000Z

392

Frequency agile optical parametric oscillator  

DOE Patents (OSTI)

The frequency agile OPO device converts a fixed wavelength pump laser beam to arbitrary wavelengths within a specified range with pulse to pulse agility, at a rate limited only by the repetition rate of the pump laser. Uses of this invention include Laser radar, LIDAR, active remote sensing of effluents/pollutants, environmental monitoring, antisensor lasers, and spectroscopy. 14 figs.

Velsko, S.P.

1998-11-24T23:59:59.000Z

393

GPS Data Filtration Method for Drive Cycle Analysis Applications  

SciTech Connect

When employing GPS data acquisition systems to capture vehicle drive-cycle information, a number of errors often appear in the raw data samples, such as sudden signal loss, extraneous or outlying data points, speed drifting, and signal white noise, all of which limit the quality of field data for use in downstream applications. Unaddressed, these errors significantly impact the reliability of source data and limit the effectiveness of traditional drive-cycle analysis approaches and vehicle simulation software. Without reliable speed and time information, the validity of derived metrics for drive cycles, such as acceleration, power, and distance, become questionable. This study explores some of the common sources of error present in raw onboard GPS data and presents a detailed filtering process designed to correct for these issues. Test data from both light and medium/heavy duty applications are examined to illustrate the effectiveness of the proposed filtration process across the range of vehicle vocations. Graphical comparisons of raw and filtered cycles are presented, and statistical analyses are performed to determine the effects of the proposed filtration process on raw data. Finally, an evaluation of the overall benefits of data filtration on raw GPS data and present potential areas for continued research is presented.

Duran, A.; Earleywine, M.

2013-02-01T23:59:59.000Z

394

Reducing the cost of top-drive installation  

Science Conference Proceedings (OSTI)

To equip an older jackup, the Offshore Mercury, with a completely workable and reliable top drive at minimum cost and without sacrificing performance, Sonat Offshore Drilling installed a power-swivel drilling system that did not require heightening or strengthening the derrick. An electronic crown protection system was installed to allow the driller use of all available reduced crown clearance, thereby increasing drilling safety by reducing the probability of accidentally running the traveling block into the crown. In addition, they modified the DC-DC drilling power equipment to create a completely functional and low-cost alternative to installing additional AC power-generating capacity and an SCR system. When planning a cost-effective top-drive installation on the Offshore Mercury, they recognized that the rig did not fit the average jackup profile: It has a DC-DC electric power drilling system and only a 140-ft (43-m) derrick, rather than the more common SCR system and 147-ft (45-m) derrick. From costs studies made up to the middle of 1991, they believed they could save a significant amount if it were possible to install and use a top drive in a 147-ft (45-m) or even a 140-ft (43-m) derrick without having to extend and strengthen the derrick. This paper reviews the design of this system and the effectiveness of its performance.

Hock, C.J. (Sonat Offshore Drilling Inc., Houston, TX (United States))

1993-09-01T23:59:59.000Z

395

Alternative Fuels Data Center: New Mexico Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: New Mexico Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: New Mexico Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: New Mexico Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: New Mexico Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: New Mexico Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: New Mexico Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type

396

Alternative Fuels Data Center: North Dakota Laws and Incentives for Driving  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: North Dakota Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: North Dakota Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: North Dakota Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: North Dakota Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: North Dakota Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: North Dakota Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type

397

Alternative Fuels Data Center: New Jersey Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: New Jersey Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: New Jersey Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: New Jersey Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: New Jersey Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: New Jersey Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: New Jersey Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type

398

Alternative Fuels Data Center: Rhode Island Laws and Incentives for Driving  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Rhode Island Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Rhode Island Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Rhode Island Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Rhode Island Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Rhode Island Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Rhode Island Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type

399

Experimental Demonstration of X-Ray Drive Enhancement with Rugby-Shaped Hohlraums  

E-Print Network (OSTI)

Rugby-shaped hohlraums have been suggested as a way to enhance x-ray drive in the indirect drive approach to inertial confinement fusion. This Letter presents an experimental comparison of rugby-shaped and cylinder hohlraums ...

Philippe, F.

400

International Assessment of Electric-Drive Vehicles: Policies, Markets, and Technologies  

E-Print Network (OSTI)

Electric-Drive Vehicles In the very early years of the automotive industry,electric-drive vehicles, especially battery-powered EVs The programs are almost aU in countries with major automotive manufacturing industries.

Sperling, Daniel; Lipman, Timothy

2003-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "frequency drives vfds" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Simulation of a novel electromechanical engine valve drive to quantify performance gains in fuel consumption  

E-Print Network (OSTI)

This thesis describes the modeling and simulation of a novel electromechanical valve drive known as the MIT EMV. This valve drive allows an engine to achieve variable valve timing which has been shown to produce improvements ...

Miller, Justin (Justin Lee)

2011-01-01T23:59:59.000Z

402

The eGallon: How Much Cheaper Is It to Drive on Electricity?...  

NLE Websites -- All DOE Office Websites (Extended Search)

The eGallon: How Much Cheaper Is It to Drive on Electricity? The eGallon: How Much Cheaper Is It to Drive on Electricity? June 10, 2013 - 11:00pm Addthis eGallon: Compare the costs...

403

Large-scale battery system modeling and analysis for emerging electric-drive vehicles  

Science Conference Proceedings (OSTI)

Emerging electric-drive vehicles demonstrate the potential for significant reduction of petroleum consumption and greenhouse gas emissions. Existing electric-drive vehicles typi- cally include a battery system consisting of thousands of Lithium-ion battery ... Keywords: analysis, battery system model, electric-drive vehicles

Kun Li; Jie Wu; Yifei Jiang; Zyad Hassan; Qin Lv; Li Shang; Dragan Maksimovic

2010-08-01T23:59:59.000Z

404

Development of a questionnaire for identifying driver's personal values in driving  

Science Conference Proceedings (OSTI)

The speed behavior of drivers is influenced by their personal driving values. It is assumed that these personal values may differ between drivers. In this paper, we describe the development of the Personal Driving Values (PDV) questionnaire. The questionnaire ... Keywords: driving behavior, motivation, questionnaire

Qonita Shahab, Jacques Terken, Berry Eggen

2013-10-01T23:59:59.000Z

405

Direct-Drive Inertial Confinement Fusion Research at the Laboratory for Laser Energetics  

E-Print Network (OSTI)

beams Relative size 240 ft National Ignition Facility (NIF) 1.8 MJ 192 beams NIF The National Ignition (NIF) is predicted to achieve high-gain (~40). · Direct drive targets are predicted to ignite on the NIF while it is in x-ray-drive configuration with polar direct drive (PDD). · Fully integrated fast

406

Influence of voltage drop to electric drive with induction motor and voltage sourced inverter  

Science Conference Proceedings (OSTI)

This paper solves problematic of immunity from the voltage drop of the power supply of the electric drive with induction motor with Voltage-Fed inverter. There are reflected opportune control algorithms for the quickly to change of working regime from ... Keywords: electric drive with induction motor, electric drive with voltage sourced inverter, voltage drop

P. Beneš; J. Fo?t; M. Pittermann

2011-09-01T23:59:59.000Z

407

Damping Control Study of the Drive Train of DFIG Wind Turbine  

Science Conference Proceedings (OSTI)

In this paper, damping controller for dynamic and transient control of a variable speed wind turbine is presented.the phenomenon of drive train oscillations in wind turbines is discussed. It is illustrated how the damping controller is able to reduce ... Keywords: pitch damping, drive train shaft, torque oscillation, damping control, drive train model

Zuo-xia Xing; Li-zhe Liang; Heng-yi Guo; Xiao-dong Wang

2009-10-01T23:59:59.000Z

408

Design of Electric Vehicles DC Traction Motor Drive System Based on Optimal Control  

Science Conference Proceedings (OSTI)

The traditional electric vehicle DC motor drive system can not automatically weaken magnetic field. This paper designs DC motor drive system which control optimally the motor to meet the requirement. The study results show that: the drive system can ... Keywords: electric vehicles, DC motor, controller, optimal control

Yan Jun

2012-12-01T23:59:59.000Z

409

Dynamic Characteristic of the Drive Train of DFIG Wind Turbines during Grid Faults  

Science Conference Proceedings (OSTI)

During a grid voltage drop ,a problem is resonances in the drive-train shaft between the wind turbine and induction generator. Disadvantageous effects caused by this are noticeable vibrations and high mechanical stresses due to torque oscillations. The ... Keywords: damping control, drive train model, drive train shaft, torque oscillation

Yao Xingjia; Liang Lizhe; Xing Zuoxia

2009-10-01T23:59:59.000Z

410

Neuro-Fuzzy Controller of a Sensorless PM Motor Drive For Washing Machines  

E-Print Network (OSTI)

algorithms to enable direct drive from permanent magnet (PM) synchronous motors[3]. #12;Among AC drives, the permanent magnet (PM) motors have became popular, due to its high torque to current ration, large powerNeuro-Fuzzy Controller of a Sensorless PM Motor Drive For Washing Machines Kasim M. Al

411

Hybrid Cascaded H-bridges Multilevel Motor Drive Control for Electric Vehicles  

E-Print Network (OSTI)

Hybrid Cascaded H-bridges Multilevel Motor Drive Control for Electric Vehicles Zhong Du1 , Leon M for electric/hybrid electric vehicles where each phase of a three-phase cascaded multilevel converter can vehicle motor drive applications and hybrid electric vehicle motor drive applications. Keywords: hybrid

Tolbert, Leon M.

412

Radio Frequency Identification Tags - Active Tags ...  

Selectable, license free, RF frequency bands; Ultra low power sleep mode; Miniaturized, encapsulated bendable packaging;

413

Public Transit Use By Non-driving Disabled Persons: The Case Of The Blind And Vision Impaired  

E-Print Network (OSTI)

Transit Use by Non-Driving Disabled Persons: the Case of theTransit Use by Non-Driving Disabled Persons: The Case of theand movement potential of the disabled non-driving group. We

Golledge, R.; Costanzo, C. M.; Marston, J.

1996-01-01T23:59:59.000Z

414

Radio frequency coaxial feedthrough device  

DOE Patents (OSTI)

A radio frequency coaxial vacuum feedthrough is provided which utilizes a cylindrical ceramic vacuum break formed of an alumina ceramic. The cylinder is coaxially disposed and brazed between tapered coaxial conductors to form a vacuum sealed connection between a pressurized upstream coaxial transmission line and a utilization device located within a vacuum container. The feedthrough provides 50 ohm matched impedance RF feedthrough up to about 500 MHz at power levels in the multimegawatt range.

Owens, Thomas L. (Kingston, TN); Baity, Frederick W. (Oak Ridge, TN); Hoffman, Daniel J. (Oak Ridge, TN); Whealton, John H. (Oak Ridge, TN)

1987-01-01T23:59:59.000Z

415

Variable frequency microwave furnace system  

DOE Patents (OSTI)

A variable frequency microwave furnace system designed to allow modulation of the frequency of the microwaves introduced into a furnace cavity for testing or other selected applications. The variable frequency microwave furnace system includes a microwave signal generator or microwave voltage-controlled oscillator for generating a low-power microwave signal for input to the microwave furnace. A first amplifier may be provided to amplify the magnitude of the signal output from the microwave signal generator or the microwave voltage-controlled oscillator. A second amplifier is provided for processing the signal output by the first amplifier. The second amplifier outputs the microwave signal input to the furnace cavity. In the preferred embodiment, the second amplifier is a traveling-wave tube (TWT). A power supply is provided for operation of the second amplifier. A directional coupler is provided for detecting the direction of a signal and further directing the signal depending on the detected direction. A first power meter is provided for measuring the power delivered to the microwave furnace. A second power meter detects the magnitude of reflected power. Reflected power is dissipated in the reflected power load. 5 figs.

Bible, D.W.; Lauf, R.J.

1994-06-14T23:59:59.000Z

416

Mode conversion current drive experiments on Alcator C-Mod  

E-Print Network (OSTI)

In tokamak plasmas with multiple ion species, fast magnetosonic waves (FW) in the Ion Cyclotron Range of Frequency can mode convert to shorter wavelength modes at the Ion-Ion hybrid layer, leading to localized electron ...

Parisot, Alexandre, 1979-

2007-01-01T23:59:59.000Z

417

Wave frequency dependence of H{sup -} ion production and extraction in a transformer coupled plasma H{sup -} ion source at SNU  

Science Conference Proceedings (OSTI)

The effect of rf wave frequencies on the production of H{sup -} ion is investigated in a transformer coupled plasma H{sup -} ion source at Seoul National University. A Langmuir probe is installed to measure the plasma density and temperature, and these plasma parameters are correlated to the extracted H{sup -} beam currents at various frequencies. The Langmuir probe is also used to measure the density of H{sup -} ions at the ion source by generating photodetachment with an Nd:YAG laser. The extracted H{sup -} currents decrease to a minimum value until 13 MHz and then, increase as the driving frequency increases from 13 MHz while the relative H{sup -} population measured by photodetachment monotonically decreases as the driving rf frequency increases from 11 MHz to 15 MHz. A potential well formed at the extraction region at high frequencies of more than 13 MHz is considered responsible for the increased H{sup -} beam extraction even with a lower photodetachment signal. The variation in the driving rf frequency not only affects the density and temperature of the plasma but also modifies the plasma potential with the existence of a filtering magnetic field and consequently, influences the extracted H{sup -} current through the extraction as well as formation of H{sup -} ions.

An, Young Hwa; Cho, Won Hwi; Chung, Kyoung-Jae; Lee, Kern; Jang, Seung Bin; Lee, Seok-Geun; Hwang, Y. S. [Department of Nuclear Engineering, Seoul National University, Seoul 151-744 (Korea, Republic of)

2012-02-15T23:59:59.000Z

418

U.S. DRIVE Highlights of Technical Accomplishments 2011  

NLE Websites -- All DOE Office Websites (Extended Search)

1 1 February 2012 Preface The U.S. DRIVE Partnership is a voluntary government-industry partnership focused on precompetitive, advanced automotive and related infrastructure technology research and development (R&D). Partners are the United States Department of Energy (DOE); the United States Council for Automotive Research LLC (USCAR), a consortium composed of Chrysler Group LLC, Ford Motor Company, and General Motors Company; Tesla Motors; five energy companies (BP America, Chevron Corporation, ConocoPhillips, ExxonMobil Corporation, and Shell Oil Products US); two electric utilities, DTE Energy and Southern California Edison; and the Electric Power Research Institute.

419

FTIR spectrometer with solid-state drive system  

DOE Patents (OSTI)

An FTIR spectrometer (10) and method using a solid-state drive system with thermally responsive members (27) that are subject to expansion upon heating and to contraction upon cooling. Such members (27) are assembled in the device (10) so as to move an angled, reflective surface (22) a small distance. The sample light beam (13) is received at a detector (24) along with a reference light beam (13) and there it is combined into a resulting signal. This allows the "interference" between the two beams to occur for spectral analysis by a processor (29).

Rajic, Slobodan (Knoxville, TN); Seals, Roland D. (Oak Ridge, TN); Egert, Charles M. (Oak Ridge, TN)

1999-01-01T23:59:59.000Z

420

High transformer ratio drive beams for wakefield accelerator studies  

Science Conference Proceedings (OSTI)

For wakefield based acceleration schemes, use of an asymmetric (or linearly ramped) drive bunch current profile has been predicted to enhance the transformer ratio and generate large accelerating wakes. We discuss plans and initial results for producing such bunches using the 20 to 23 GeV electron beam at the FACET facility at SLAC National Accelerator Laboratory and sending them through plasmas and dielectric tubes to generate transformer ratios greater than 2 (the limit for symmetric bunches). The scheme proposed utilizes the final FACET chicane compressor and transverse collimation to shape the longitudinal phase space of the beam.

England, R. J.; Ng, C.-K.; Frederico, J.; Hogan, M. J.; Litos, M.; Muggli, P.; Joshi, C.; An, W.; Andonian, G.; Mori, W.; Lu, W. [SLAC National Accelerator Laboratory, Menlo Park, CA 94025 (United States); Max Planck Institute for Physics, 80805 Munich (Germany); University of California Los Angeles, Los Angeles, CA 90095 (United States); Tsinghua University, Beijing (China)

2012-12-21T23:59:59.000Z

Note: This page contains sample records for the topic "frequency drives vfds" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Linear hydraulic drive system for a Stirling engine  

SciTech Connect

A hydraulic drive system operating from the periodic pressure wave produced by a Stirling engine along a first axis thereof and effecting transfer of power from the Stirling engine to a load apparatus therefor and wherein the movable, or working member of the load apparatus is reciprocatingly driven along an axis substantially at right angles to the first axis to achieve an arrangement of a Stirling engine and load apparatus assembly which is much shorter and the components of the load apparatus more readily accessible. 2 figs.

Walsh, M.M.

1984-02-21T23:59:59.000Z

422

Indirect Drive Warm-Loaded Ignition Target Design  

SciTech Connect

This document summarizes the Indirect Drive Warm-Loaded Ignition Target design. These targets either use a fill tube or the capsule is strong enough to withstand the room temperature pressure of the DT fuel. Only features that affect the design of the NIF Cryogenic Target System (NCTS) are presented. The design presented is the current thinking and may evolve further. The NCTS should be designed to accommodate a range of targets and target scales, as described here. The interface location between the target and the NCTS cryostat is at the target base / gripper joint, the tamping gas gland/gland joint, and the electrical plug/receptacle joint.

Bernat, T P; Gibson, C R

2004-09-03T23:59:59.000Z

423

Fluid equations in the presence of electron cyclotron current drive  

Science Conference Proceedings (OSTI)

Two-fluid equations, which include the physics imparted by an externally applied radiofrequency source near electron cyclotron resonance, are derived in their extended magnetohydrodynamic forms using the formalism of Hegna and Callen [Phys. Plasmas 16, 112501 (2009)]. The equations are compatible with the closed fluid/drift-kinetic model developed by Ramos [Phys. Plasmas 17, 082502 (2010); 18, 102506 (2011)] for fusion-relevant regimes with low collisionality and slow dynamics, and they facilitate the development of advanced computational models for electron cyclotron current drive-induced suppression of neoclassical tearing modes.

Jenkins, Thomas G.; Kruger, Scott E. [Tech-X Corporation, 5621 Arapahoe Avenue, Boulder, Colorado 80303 (United States)

2012-12-15T23:59:59.000Z

424

Linear hydraulic drive system for a Stirling engine  

DOE Patents (OSTI)

A hydraulic drive system operating from the periodic pressure wave produced by a Stirling engine along a first axis thereof and effecting transfer of power from the Stirling engine to a load apparatus therefor and wherein the movable, or working member of the load apparatus is reciprocatingly driven along an axis substantially at right angles to the first axis to achieve an arrangement of a Stirling engine and load apparatus assembly which is much shorter and the components of the load apparatus more readily accessible.

Walsh, Michael M. (Schenectady, NY)

1984-02-21T23:59:59.000Z

425

Alternative Fuels Data Center: Qualified Plug-In Electric Drive Motor  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Qualified Plug-In Qualified Plug-In Electric Drive Motor Vehicle Tax Credit to someone by E-mail Share Alternative Fuels Data Center: Qualified Plug-In Electric Drive Motor Vehicle Tax Credit on Facebook Tweet about Alternative Fuels Data Center: Qualified Plug-In Electric Drive Motor Vehicle Tax Credit on Twitter Bookmark Alternative Fuels Data Center: Qualified Plug-In Electric Drive Motor Vehicle Tax Credit on Google Bookmark Alternative Fuels Data Center: Qualified Plug-In Electric Drive Motor Vehicle Tax Credit on Delicious Rank Alternative Fuels Data Center: Qualified Plug-In Electric Drive Motor Vehicle Tax Credit on Digg Find More places to share Alternative Fuels Data Center: Qualified Plug-In Electric Drive Motor Vehicle Tax Credit on AddThis.com... More in this section...

426

Design of Electron Cyclotron Heating and Current Drive System of ITER  

Science Conference Proceedings (OSTI)

Since the end of EDA, the design of the Electron Cyclotron Heating and Current Drive (ECH and CD) system has been modified to respond to progress in physics understanding and change of interface conditions. Nominal RF power of 20 MW is shared by four upper launchers or one equatorial launcher RF beams are steered by front steering mirrors providing wide sweeping angle for the RF beam. DC high voltage power supply may be composed of IGBT pulse step modulators because of high frequency modulation and design flexibility to three different types of 170 GHz gyrotrons provided by three parties. The RF power from the 170 GHz gyrotron is transmitted to the launcher by 63.5 mm{phi} corrugated waveguide line and remotely switched by a waveguide switch between the upper launcher and the equatorial launcher. The ECH and CD system has also a start-up sub-system for assist of initial discharge composed of three 127.5 GHz gyrotrons and a dedicated DC high voltage power supply. Three of transmission lines are shared between 170 GHz gyrotron and 127.5 GHz gyrotron so as to inject RF beam for the start-up through the equatorial launcher. R and Ds of components for high power long pulse and mirror steering mechanism have been on-going in the parties to establish a reliable ITER ECH and CD system.

Kobayashi, N. [ITER, Cadarache (France); Bigelow, T.; Rasmussen, D. [ORNL, Oak Ridge (United States); Bonicelli, T.; Ramponi, G.; Saibene, G. [EFDA, Garching (Germany); Cirant, S. [ENEA-CNR, Milan (Italy); Denisov, G. [IAP, Nizhny Novgorod (Russian Federation); Heidinger, R.; Piosczyk, B. [FZK, Karlsruhe (Germany); Henderson, M.; Hogge, J.-P.; Thumm, M.; Tran, M. Q. [CRPP, Lausanne (Switzerland); Rao, S. L. [IPR, Bhat (India); Sakamoto, K.; Takahashi, K. [JAEA, Naka (Japan); Temkin, R. J. [MIT PSFC, Cambridge (United States); Verhoeven, A. G. A. [FOM IPP, Rijnhuizen (Netherlands); Zohm, H. [MPI IPP, Garching (Germany)

2007-09-28T23:59:59.000Z

427

Demonstration and Optimization of a Drive Laser for an X-Band Photoinjector  

SciTech Connect

Recently, a drive laser for an S-band (2.86 GHz) rf photoinjector, designed to provide a pulse that has a flat temporal and spatial profile, has been built, commissioned, and put into service as part of the LLNL Compton-scattering monoenergetic {gamma}-ray source program. This laser is based on an all-fiber oscillator and front-end amplification system, and provides both the laser light to generate the electrons as well as the rf signal that is amplified to accelerate them. Now, a new 11.424 GHz photoinjector is being developed, which has required a revised design for the laser system. The higher frequency has placed more stringent requirements on the synchronization stability, delivered pulse length, and pulse rise times to maintain the desired emittance. Presented here are the overall design and measured performance of the current system and a discussion of what changes are being made to address observed shortcomings and more demanding requirements to make the system ready for the next-generation Compton-scattering monoenergetic {gamma}-ray source.

Gibson, D J; Anderson, S G; Betts, S M; Messerly, M J; Phan, H H; Shverdin, M Y; Hartemann, F V; Siders, C W; Barty, C J

2009-04-17T23:59:59.000Z

428

How to Avoid Overestimating Variable Speed Drive Savings  

E-Print Network (OSTI)

This paper addresses eight factors that can cause incorrect and often excessive savings estimates for pump and fan variable speed drive applications. To avoid overestimating savings: 1. Identify system elements that affect head pressure independently of flow rate. 2. Identify system elements that change head pressure in proportion to less than the square of flow rate. 3. Account for dynamic system elements, especially when in systems with minimum static pressure controls. 4. Consider changes in fan efficiency. 5. Account for decreases in motor efficiency at part load, particularly for smaller motors below about 35 percent load. 6. Recognize that existing part load controls may be more efficient than expected. 7. Account for drive losses. 8. Measure full flow power, rather than assuming it is the same as motor nameplate or design power. For many pump and fan systems, none of the eight factors will apply, or their effects will be negligible. However, analysts should consider their applicability when estimating savings for a particular system. This paper provides tools for accounting for the factors.

Maxwell, J. B.

2005-01-01T23:59:59.000Z

429

Modular PM Motor Drives for Automotive Traction Applications  

DOE Green Energy (OSTI)

This paper presents modular permanent magnet (PM) motor drives for automotive traction applications. A partially modularized drive system consisting of a single PM motor and multiple inverters is described. The motor has multiple three-phase stator winding sets and each winding set is driven with a separate three-phase inverter module. A truly modularized inverter and motor configuration based on an axial-gap PM motor is then introduced, in which identical PM motor modules are mounted on a common shaft and each motor module is powered by a separate inverter module. The advantages of the modular approach for both inverter and motor include: (1) power rating scalability--one design meets different power requirements by simply stacking an adequate number of modules, thus avoiding redesigning and reducing the development cost, (2) increased fault tolerance, and (3) easy repairing. A prototype was constructed by using two inverters and an axial-gap PM motor with two sets of three-phase stat or windings, and it is used to assist the diesel engine in a hybrid electric vehicle converted from a Chevrolet Suburban. The effect of different pulse-width-modulation strategies for both motoring and regenerative modes on current control is analyzed. Torque and regenerative control algorithms are implemented with a digital signal processor. Analytical and initial testing results are included in the paper.

Su, G.J.

2001-10-29T23:59:59.000Z

430

Electron cyclotron heating and current drive in toroidal geometry  

SciTech Connect

The Principal Investigator has continued to work on problems associated both with the deposition and with the emission of electron cyclotron power in toroidal plasmas. We have investigated the use of electron cyclotron resonance heating for bringing compact tokamaks (BPX) to ignition-like parameters. This requires that we continue to refine the modeling capability of the TORCH code linked with the BALDUR 1 {1/2} D transport code. Using this computational tool, we have examined the dependence of ignition on heating and transport employing both theoretical (multi-mode) and empirically based transport models. The work on current drive focused on the suppression of tearing modes near the q = 2 surface and sawteeth near the q = 1 surface. Electron cyclotron current drive in CIT near the q =2 surface was evaluated for a launch scenario where electron cyclotron power was launched near the equatorial plane. The work on suppression of sawteeth has been oriented toward understanding the suppression that has been observed in a number of tokamaks, in particular, in the WT-3 tokamak in Kyoto. To evaluate the changes in current profile (shear) near the q =1 surface, simulations have been carried out using the linked BALDUR-TORCH code. We consider effects on shear resulting both from wave-induced current as well as from changes in conductivity associated with changes in local temperature. Abstracts and a paper relating to this work is included in Appendix A.

Kritz, A.H.

1991-11-01T23:59:59.000Z

431

RF heating and current drive on NSTX with high  

SciTech Connect

NSTX is a small aspect ratio tokamak (R = 0.85 m, a = 0.65 m). The High Harmonic Fast Wave (HHFW) system is a 30 MHz, 12-element array capable of launching both symmetric and directional wave spectra for plasma heating and non-inductive current drive. It has delivered up to 6 MW for short pulses and has routinely operated at ~3 MW for 100-400 ms pulses. Results include strong, centrally-peaked electron heating in both D and He plasmas for both high and low phase velocity spectra. H-modes were obtained with application of HHFW power alone, with stored energy doubling after the L-H transition. Beta poloidal as large as unity has been obtained with significant fractions (0.4) of bootstrap current. Differences in the loop voltage are observed depending on whether the array is phased to drive current in the co- or counter-current directions. A fast ion tail with energies extending up to 140 keV has been observed when HHFW interacts with 80 keV neutral beams; neutron rate and lost ion measurements, as well as modeling, indicate significant power absorption by the fast ions. Radial rf power deposition and driven current profiles have been calculated with ray tracing and kinetic full-wave codes and compared with measurements.

Ryan, Philip Michael [ORNL; Peng, Yueng Kay Martin [ORNL

2003-01-01T23:59:59.000Z

432

Spectral Effects on Fast Wave Core Heating and Current Drive  

SciTech Connect

Recent results obtained with high harmonic fast wave (HHFW) heating and current drive (CD) on NSTX strongly support the hypothesis that the onset of perpendicular fast wave propagation right at or very near the launcher is a primary cause for a reduction in core heating efficiency at long wavelengths that is also observed in ICRF heating experiments in numerous tokamaks. A dramatic increase in core heating efficiency was first achieved in NSTX L-mode helium majority plasmas when the onset for perpendicular wave propagation was moved away from the antenna and nearby vessel structures. Efficient core heating in deuterium majority L mode and H mode discharges, in which the edge density is typically higher than in comparable helium majority plasmas, was then accomplished by reducing the edge density in front of the launcher with lithium conditioning and avoiding operational points prone to instabilities. These results indicate that careful tailoring of the edge density profiles in ITER should be considered to limit rf power losses to the antenna and plasma facing materials. Finally, in plasmas with reduced rf power losses in the edge regions, the first direct measurements of high harmonic fast wave current drive were obtained with the motional Stark effect (MSE) diagnostic. The location and radial dependence of HHFW CD measured by MSE are in reasonable agreement with predictions from both full wave and ray tracing simulations.

C.K. Phillips, R.E. Bell, L.A. Berry, P.T. Bonoli, R.W. Harvey, J.C. Hosea, E.F. Jaeger, B.P. LeBlanc, P.M. Ryan, G. Taylor, E.J. Valeo, J.R. Wilson, J.C. Wright, H. Yuh, and the NSTX Team

2009-05-11T23:59:59.000Z

433

Radio frequency sustained ion energy  

SciTech Connect

Electromagnetic (E.M.) energy injection method and apparatus for producing and sustaining suprathermal ordered ions in a neutral, two-ion-species, toroidal, bulk equilibrium plasma. More particularly, the ions are produced and sustained in an ordered suprathermal state of existence above the average energy and velocity of the bulk equilibrium plasma by resonant rf energy injection in resonance with the natural frequency of one of the ion species. In one embodiment, the electromagnetic energy is injected to clamp the energy and velocity of one of the ion species so that the ion energy is increased, sustained, prolonged and continued in a suprathermal ordered state of existence containing appreciable stored energy that counteracts the slowing down effects of the bulk equilibrium plasma drag. Thus, selective deuteron absorption may be used for ion-tail creation by radio-frequency excitation alone. Also, the rf can be used to increase the fusion output of a two-component neutral injected plasma by selective heating of the injected deuterons.

Jassby, Daniel L. (Princeton, NJ); Hooke, William M. (Princeton, NJ)

1977-01-01T23:59:59.000Z

434

Transistors for Electric Motor Drives: High-Performance GaN HEMT Modules for Agile Power Electronics  

SciTech Connect

ADEPT Project: Transphorm is developing transistors with gallium nitride (GaN) semiconductors that could be used to make cost-effective, high-performance power converters for a variety of applications, including electric motor drives which transmit power to a motor. A transistor acts like a switch, controlling the electrical energy that flows around an electrical circuit. Most transistors today use low-cost silicon semiconductors to conduct electrical energy, but silicon transistors don’t operate efficiently at high speeds and voltage levels. Transphorm is using GaN as a semiconductor material in its transistors because GaN performs better at higher voltages and frequencies, and it is more energy efficient than straight silicon. However, Transphorm is using inexpensive silicon as a base to help keep costs low. The company is also packaging its transistors with other electrical components that can operate quickly and efficiently at high power levels—increasing the overall efficiency of both the transistor and the entire motor drive.

None

2010-09-01T23:59:59.000Z

435

Frequency synthesis using MEMS piezoelectric resonators  

E-Print Network (OSTI)

(cont.) Ultimately, this thesis presents two approaches to frequency synthesizer design. The first uses frequency windows of approximately 200 MHz. The 800 MHz to 1 GHz matching network is presented in detail along with ...

Calhoun, Paul Jacob, 1979-

2004-01-01T23:59:59.000Z

436

Definition: Frequency Bias Setting | Open Energy Information  

Open Energy Info (EERE)

Frequency Bias, Balancing Authority, frequency response, smart grid References Glossary of Terms Used in Reliability Standards An inl LikeLike UnlikeLike You like this.Sign...

437

Universal Frequency Spectra of Surface Meteorological Fluctuations  

Science Conference Proceedings (OSTI)

Statistical characteristics of surface meteorology are examined in terms of frequency spectra. According to a recent work using hourly data over 50 yr in the Antarctic, the frequency spectra have a characteristic shape proportional to two ...

Chikara Tsuchiya; Kaoru Sato; Tomoe Nasuno; Akira T. Noda; Masaki Satoh

2011-09-01T23:59:59.000Z

438

A Study of Target Frequency Bond for Frequency Control Performance Score Calculations in an Isolated System.  

E-Print Network (OSTI)

??Power system frequency is one of the key performance indices of system operation. Abnormal frequency deviations would incur negative impacts to power equipments and service… (more)

Lee, Hung-hsi

2010-01-01T23:59:59.000Z

439

Conventional and fuzzy PI control of voltage-source inverter-fed induction motor drive for electric vehicle  

Science Conference Proceedings (OSTI)

Keywords: adaptive control, control algorithm, electric vehicle, fuzzy control, inverter drive system

Tadeusz Stefanski

1995-12-01T23:59:59.000Z

440

Performance evaluation of a permanent magnet brushless DC linear drive for high-speed machining using finite element analysis  

Science Conference Proceedings (OSTI)

Keywords: FEA, coupled magneto-thermal, electric field, electromagnetic, linear motor drives, magnetic field, static

George Abdou; William Tereshkovich

2000-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "frequency drives vfds" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Heterodyne laser instantaneous frequency measurement system  

DOE Patents (OSTI)

A heterodyne laser instantaneous frequency measurement system is disclosed. The system utilizes heterodyning of a pulsed laser beam with a continuous wave laser beam to form a beat signal. The beat signal is processed by a controller or computer which determines both the average frequency of the laser pulse and any changes or chirp of the frequency during the pulse.

Wyeth, Richard W. (Livermore, CA); Johnson, Michael A. (Pleasanton, CA); Globig, Michael A. (Livermore, CA)

1990-01-01T23:59:59.000Z

442

Heterodyne laser instantaneous frequency measurement system  

DOE Patents (OSTI)

A heterodyne laser instantaneous frequency measurement system is disclosed. The system utilizes heterodyning of a pulsed laser beam with a continuous wave laser beam to form a beat signal. The beat signal is processed by a controller or computer which determines both the average frequency of the laser pulse and any changes or chirp of th frequency during the pulse.

Wyeth, Richard W. (Livermore, CA); Johnson, Michael A. (Pleasanton, CA); Globig, Michael A. (Livermore, CA)

1989-01-01T23:59:59.000Z

443

A radio frequency coaxial feedthrough  

DOE Patents (OSTI)

An improved radio frequency coaxial transmission line vacuum feedthrough is provided based on the use of a half-wavelength annular dielectric pressure barrier disk, or multiple disks comprising an effective half wavelength structure to eliminate reflection from the barrier surfaces. Gas-tight seals are formed about the outer and inner diameter surfaces of the barrier disk using a sealing technique which generates radial forces sufficient to form seals by forcing the conductor walls against the surfaces of the barrier disks in a manner which does not deform the radii of the inner and outer conductors, thereby preventing enhancement of the electric field at the barrier faces which limits the voltage and power handling capabilities of a feedthrough.

Owens, T.L.

1987-12-07T23:59:59.000Z

444

Generation of coherent waves by frequency up-conversion and down-conversion of incoherent light  

SciTech Connect

It is revealed that the generation of a coherent wave by frequency conversion of incoherent waves is a characteristic feature of three-wave interaction in a nonlinear medium when angular dispersion of input waves is properly chosen. In this case the combining action of the pairs of spectral components of incoherent waves may result in the cumulative driving of a single plane monochromatic wave in up-conversion and down-conversion processes. As a fundamental result we point out an enhancement of the spectral radiance of the generated wave in comparison with incoherent waves.

Piskarskas, A.; Pyragaite, V.; Stabinis, A. [Department of Quantum Electronics, Vilnius University, Sauletekio Avenue 9, Building 3, LT-10222 Vilnius (Lithuania)

2010-11-15T23:59:59.000Z

445

Design and implementation of low power multistage amplifiers and high frequency distributed amplifiers  

E-Print Network (OSTI)

The advancement in integrated circuit (IC) technology has resulted in scaling down of device sizes and supply voltages without proportionally scaling down the threshold voltage of the MOS transistor. This, coupled with the increasing demand for low power, portable, battery-operated electronic devices, like mobile phones, and laptops provides the impetus for further research towards achieving higher integration on chip and low power consumption. High gain, wide bandwidth amplifiers driving large capacitive loads serve as error amplifiers in low-voltage low drop out regulators in portable devices. This demands low power, low area, and frequency-compensated multistage amplifiers capable of driving large capacitive loads. The first part of the research proposes two power and area efficient frequency compensation schemes: Single Miller Capacitor Compensation (SMC) and Single Miller Capacitor Feedforward Compensation (SMFFC), for multistage amplifiers driving large capacitive loads. The designs have been implemented in a 0.5??m CMOS process. Experimental results show that the SMC and SMFFC amplifiers achieve gain-bandwidth products of 4.6MHz and 9MHz, respectively, when driving a load of 25K?/120pF. Each amplifier operates from a ??1V supply, dissipates less than 0.42mW of power and occupies less than 0.02mm2 of silicon area. The inception of the latest IEEE standard like IEEE 802.16 wireless metropolitan area network (WMAN) for 10 -66 GHz range demands wide band amplifiers operating at high frequencies to serve as front-end circuits (e.g. low noise amplifier) in such receiver architectures. Devices used in cascade (multistage amplifiers) can be used to increase the gain but it is achieved at an expense of bandwidth. Distributing the capacitance associated with the input and the output of the device over a ladder structure (which is periodic), rather than considering it to be lumped can achieve an extension of bandwidth without sacrificing gain. This concept which is also known as distributed amplification has been explored in the second part of the research. This work proposes certain guidelines for the design of distributed low noise amplifiers operating at very high frequencies. Noise analysis of the distributed amplifier with real transmission lines is introduced. The analysis for gain and noise figure is verified with simulation results from a 5-stage distributed amplifier implemented in a 0.18??m CMOS process.

Mishra, Chinmaya

2004-08-01T23:59:59.000Z

446

#LabChat: Innovations Driving More Efficient Vehicles, Dec. 13 at 2 pm ET |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

#LabChat: Innovations Driving More Efficient Vehicles, Dec. 13 at 2 #LabChat: Innovations Driving More Efficient Vehicles, Dec. 13 at 2 pm ET #LabChat: Innovations Driving More Efficient Vehicles, Dec. 13 at 2 pm ET December 11, 2012 - 10:09am Q&A Researchers are developing technologies that will help consumers drive farther using less fuel. Have questions? Ask us here or on #LabChat. Ask Us Addthis What improvements are making vehicles drive farther? Learn about the technologies that are increasing vehicle efficiency. What improvements are making vehicles drive farther? Learn about the technologies that are increasing vehicle efficiency. Rebecca Matulka Rebecca Matulka Digital Communications Specialist, Office of Public Affairs How can I participate? Tweet your questions to @ENERGY using #LabChat. Send questions via email to NewMedia@hq.doe.gov.

447

DOE Hydrogen and Fuel Cells Program: U.S. DRIVE Partnership  

NLE Websites -- All DOE Office Websites (Extended Search)

Mission and Goals Mission and Goals Organization Chart and Contacts Background U.S. DRIVE Partnership Budget Timeline Program Activities Advisory Panels External Coordination U.S. Department of Energy Search help Home > About > Background > U.S. DRIVE Partnership Printable Version U.S. DRIVE Partnership The U.S. DRIVE Partnership is a collaborative effort among DOE and companies from the automotive, fuels, and electric utility industries, focused on advanced automotive and related infrastructure technology research and development. U.S. DRIVE Logo The U.S. DRIVE partners are: Automobile industry: U.S. Council for Automotive Research LLC (USCAR, the cooperative research organization for Chrysler Group, Ford Motor Company, and General Motors Company); Tesla Motors Electric utility industry: DTE Energy Company, Southern California

448

Driving Battery Production in Ohio | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Battery Production in Ohio Battery Production in Ohio Driving Battery Production in Ohio November 1, 2010 - 6:19pm Addthis Randy Turk, Elyria Site Manager; Rep. Betty Sutton (OH); Frank Bozich, President Catalysts, BASF and Patrick Davis, DOE Program Manager participate in groundbreaking ceremony for BASF battery materials plant in Elyria, Ohio | Photo Courtesy of Nat Clymer Photography, LLC | Randy Turk, Elyria Site Manager; Rep. Betty Sutton (OH); Frank Bozich, President Catalysts, BASF and Patrick Davis, DOE Program Manager participate in groundbreaking ceremony for BASF battery materials plant in Elyria, Ohio | Photo Courtesy of Nat Clymer Photography, LLC | Patrick B. Davis Patrick B. Davis Vehicle Technologies Program Manager Last week, I traveled to Elyria, Ohio (not far from Cleveland and the Rock

449

Crossed-beam energy transfer in direct-drive implosions  

SciTech Connect

Direct-drive-implosion experiments on the OMEGA laser [T. R. Boehly et al., Opt. Commun. 133, 495 (1997)] have showed discrepancies between simulations of the scattered (non-absorbed) light levels and measured ones that indicate the presence of a mechanism that reduces laser coupling efficiency by 10%-20%. This appears to be due to crossed-beam energy transfer (CBET) that involves electromagnetic-seeded, low-gain stimulated Brillouin scattering. CBET scatters energy from the central portion of the incoming light beam to outgoing light, reducing the laser absorption and hydrodynamic efficiency of implosions. One-dimensional hydrodynamic simulations including CBET show good agreement with all observables in implosion experiments on OMEGA. Three strategies to mitigate CBET and improve laser coupling are considered: the use of narrow beams, multicolor lasers, and higher-Z ablators. Experiments on OMEGA using narrow beams have demonstrated improvements in implosion performance.

Seka, W; Edgell, D H; Michel, D T; Froula, D H; Goncharov, V N; Craxton, R S; Divol, L; Epstein, R; Follett, R; Kelly, J H; Kosc, T Z; Maximov, A V; McCrory, R L; Meyerhofer, D D; Michel, P; Myatt, J F; Sangster, T C; Shvydky, A; Skupsky, S

2012-05-22T23:59:59.000Z

450

Clean Cities Drive Vol 3 Issue 3 - Summer 1996  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

I I to the sixth issue of the U.S. I I Department of Energy's [DOE) Clean Cities Drive. Each issue of the newsletter will bring you valuable information from the Clean Cities pro- I 1 gram to help you succeed in putting more alternative fuel vehicles ( A M ) 11 onto our roads. If you have a story to ( I tell, a p i h r e to share, or information of interest to Clean Cities participants, 1 1 please call h e Clean Cities Hotline at 1 -800-CCITIES. 1 1 5 Journal: An Electric Vehicle Road Trip Airports Provide a Centerpiece for Clean Cities Programs Alternative Fuels Take to the Skies fnlifnrnin I l c a c Tarhnnlnnv tn Funnnd the Fueling Network 8 Police Departments Hot on the Trail o Cleaner Vehicles 9 Clean Cities a "Dream Job" for D Program Manager

451

Clean Cities Drive Vol 4 Issue 1 May 1997  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Cities Cities to the eighth issue of the I I U.S. Department of Energy's (DOE) Clean Cities Drive. Each issue 1 1 of the newsletter will bring you valuable information from the Clean Cities program to help you succeed I I in putting more alternative fuel vehi- cles onto our roads. If you have a I I story to tell, a picture to share, or information of interest to Clean Cities I I participants, call the Clean Cities I I L / National Partners to Be Honored at Clean Cities Stakeholders' Conference The Mid-Continent Trade Corridor .............. : The West .................................................. ; n . . rl . f i l l r 1. e. .. " LNG Trucks to Fleet 4 Coordinators' Corner 5 EV Market Launch New York Richmond R n c t n n DOE Comments on Proposed Priva

452

The APS direct-drive pulsed septum magnets  

Science Conference Proceedings (OSTI)

The Advanced Photon Source (APS) consists of four separate machines: linac, booster, positron accumulator ring (PAR) and storage ring (SR), plus three transfer lines interconnecting the machines. At least one thin, pulsed septum magnet is located at each splice joint. The stray field tolerances for two of these septum magnets are very stringent. As an example, for clean operation during the proposed top-up mode in the storage ring, the stray fields from the septum magnet must not exceed 1 G-m. The septum wall thickness must also not exceed 2.4 mm. To meet these requirements, direct-drive septum magnets with magnetic shield pipe around the stored beam region were developed and built. These magnets have now been tested and installed, and are used in daily operation. We describe the magnet(s) design, the measurement results, the actual operation, and performance.

Sheynin, S.; Lopez, F.; Milton, S.V.

1995-07-01T23:59:59.000Z

453

Heel and toe driving on fuel cell vehicle  

DOE Patents (OSTI)

A system and method for providing nearly instantaneous power in a fuel cell vehicle. The method includes monitoring the brake pedal angle and the accelerator pedal angle of the vehicle, and if the vehicle driver is pressing both the brake pedal and the accelerator pedal at the same time and the vehicle is in a drive gear, activating a heel and toe mode. When the heel and toe mode is activated, the speed of a cathode compressor is increased to a predetermined speed set-point, which is higher than the normal compressor speed for the pedal position. Thus, when the vehicle brake is removed, the compressor speed is high enough to provide enough air to the cathode, so that the stack can generate nearly immediate power.

Choi, Tayoung; Chen, Dongmei

2012-12-11T23:59:59.000Z

454

Electric vehicle drive train with direct coupling transmission  

DOE Patents (OSTI)

An electric vehicle drive train includes an electric motor and an associated speed sensor, a transmission operable in a speed reduction mode or a direct coupled mode, and a controller responsive to the speed sensor for operating the transmission in the speed reduction mode when the motor is below a predetermined value, and for operating the motor in the direct coupled mode when the motor speed is above a predetermined value. The controller reduces the speed of the motor, such as by regeneratively braking the motor, when changing from the speed reduction mode to the direct coupled mode. The motor speed may be increased when changing from the direct coupled mode to the speed reduction mode. The transmission is preferably a single stage planetary gearbox.

Tankersley, Jerome B. (Fredericksburg, VA); Boothe, Richard W. (Roanoke, VA); Konrad, Charles E. (Roanoke, VA)

1995-01-01T23:59:59.000Z

455

Electric vehicle drive train with direct coupling transmission  

DOE Patents (OSTI)

An electric vehicle drive train includes an electric motor and an associated speed sensor, a transmission operable in a speed reduction mode or a direct coupled mode, and a controller responsive to the speed sensor for operating the transmission in the speed reduction mode when the motor is below a predetermined value, and for operating the motor in the direct coupled mode when the motor speed is above a predetermined value. The controller reduces the speed of the motor, such as by regeneratively braking the motor, when changing from the speed reduction mode to the direct coupled mode. The motor speed may be increased when changing from the direct coupled mode to the speed reduction mode. The transmission is preferably a single stage planetary gearbox. 6 figures.

Tankersley, J.B.; Boothe, R.W.; Konrad, C.E.

1995-04-04T23:59:59.000Z

456

Electric vehicle drive train with rollback detection and compensation  

DOE Patents (OSTI)

An electric vehicle drive train includes a controller for detecting and compensating for vehicle rollback, as when the vehicle is started upward on an incline. The vehicle includes an electric motor rotatable in opposite directions corresponding to opposite directions of vehicle movement. A gear selector permits the driver to select an intended or desired direction of vehicle movement. If a speed and rotational sensor associated with the motor indicates vehicle movement opposite to the intended direction of vehicle movement, the motor is driven to a torque output magnitude as a nonconstant function of the rollback speed to counteract the vehicle rollback. The torque function may be either a linear function of speed or a function of the speed squared.

Konrad, Charles E. (Roanoke, VA)

1994-01-01T23:59:59.000Z

457

Electric vehicle drive train with rollback detection and compensation  

DOE Patents (OSTI)

An electric vehicle drive train includes a controller for detecting and compensating for vehicle rollback, as when the vehicle is started upward on an incline. The vehicle includes an electric motor rotatable in opposite directions corresponding to opposite directions of vehicle movement. A gear selector permits the driver to select an intended or desired direction of vehicle movement. If a speed and rotational sensor associated with the motor indicates vehicle movement opposite to the intended direction of vehicle movement, the motor is driven to a torque output magnitude as a nonconstant function of the rollback speed to counteract the vehicle rollback. The torque function may be either a linear function of speed or a function of the speed squared. 6 figures.

Konrad, C.E.

1994-12-27T23:59:59.000Z

458

Rim-drive cable-aligned heliostat collector system  

DOE Patents (OSTI)

Disclosed is a heliostat collector apparatus comprising at least one heliostat suspended from a plurality of longitudinally extending linkage means. An enclosure structure is disposed adjacent the heliostat and provides a means for allowing the heliostat to be substantially protected from weathering. A first drive means is operatively connected to the heliostat to effect steering thereof in at least one of first and second predetermined directions. Finally, a frame member is adapted for supporting the heliostat at an inner portion thereof. The frame includes a plurality of outer expandable portions. Each one of the expandable portions is adapted to slidably engage a corresponding one of the plurality of linkage means. The expandable portions are further adapted to allow the heliostat to be slidably moved along the linkage means in directions away from and towards the enclosure structure and to substantially reduce stress acting on the heliostat during steering.

Dolan, J.E.; Sands, T.D.

1982-09-30T23:59:59.000Z

459

Homodyne target tracking for direct drive laser inertial fusion  

E-Print Network (OSTI)

systems use a single frequency of light in both reference and measurement legs of the interferometer and can operate independent of laserLasers Office: 408-546-4546 Mobile: 408-506-7504 Email correspondence with Hovemere Ltd, makers of precise wavelength measurement systems

Spalding, Jon David

2009-01-01T23:59:59.000Z

460

WIDE BAND REGENERATIVE FREQUENCY DIVIDER AND MULTIPLIER  

DOE Patents (OSTI)

A regenerative frequency divider and multiplier having wide band input characteristics is presented. The circuit produces output oscillations having frequencies related by a fixed ratio to input oscillations over a wide band of frequencies. In accomplishing this end, the divider-multiplier includes a wide band input circuit coupled by mixer means to a wide band output circuit having a pass band related by a fixed ratio to that of the input circuit. A regenerative feedback circuit derives a fixed frequency ratio feedback signal from the output circuit and applies same to the mixer means in proper phase relation to sustain fixed frequency ratio oscillations in the output circuit.

Laine, E.F.

1959-11-17T23:59:59.000Z

Note: This page contains sample records for the topic "frequency drives vfds" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Progressive Dynamical Drive Train Modeling as Part of NREL Gearbox Reliability Collaborative: Preprint  

DOE Green Energy (OSTI)

The Gearbox Reliabiity Collaborative seeks to integrate several numerical models into the wind turbine drive train design process. This paper describes these models.

Oyague, F.

2008-07-01T23:59:59.000Z

462

Paramagnetic spin-up of a field reversed configuration with rotating magnetic field current drive.  

E-Print Network (OSTI)

??A transverse Rotating Magnetic Field (RMF) can drive toroidal current and sustain the poloidal flux of a Field Reversed Configuration (FRC) through the application of… (more)

Peter, Andrew Maxwell

2009-01-01T23:59:59.000Z

463

Coupled simulation of an indirect field oriented controlled induction motor drive.  

E-Print Network (OSTI)

??Conventionally, system simulations of induction motor drives use lumped parameters model of the motor. This approach assumes motor parameters to be constant during the entire… (more)

Legesse, Michael.

2008-01-01T23:59:59.000Z

464

TransForum v8n2 - Drive Cycle Impact on PHEVs  

NLE Websites -- All DOE Office Websites (Extended Search)

studied the impact of drive cycles on the component requirements of plug-in hybrid electric vehicles (PHEVs). Results showed that vehicles designed to satisy the urban...

465

Initial rotor position estimation for low saliency interior permanent-magnet synchronous motor drives.  

E-Print Network (OSTI)

??This work presents an initial rotor position estimation method for low saliency interior permanent-magnet synchronous motor (IPMSM) drives. The method injects signals into the stationary… (more)

Yang, Yan.

2010-01-01T23:59:59.000Z

466

Depletion and harvesting thermal energy from actuator arm electronics in hard disk drives.  

E-Print Network (OSTI)

??In recent years, thermally assistive magnetic recording (TAMR) has been applied on actuator arm electronics (AE) in hard disk drive (HDD). When HDD operates, temperature… (more)

Wu, Di

2011-01-01T23:59:59.000Z

467

What is Driving Changes in the Tropospheric Circulation? New Insights from Simplified Models.  

E-Print Network (OSTI)

??This thesis seeks an improved understanding of what has been driving changes in the large scale tropospheric circulation. First, we consider the effects of stratospheric… (more)

Tandon, Neil Francis

2013-01-01T23:59:59.000Z

468

International Assessment of Electric-Drive Vehicles: Policies, Markets, and Technologies  

E-Print Network (OSTI)

D. (1995), Future Drive Electric Vehicles and Sustainable1996), "The Case for Electric Vehicles," Sclent~c American,Emissions Impacts of Electric Vehicles," Journal of the Alr

Sperling, Daniel; Lipman, Timothy

2003-01-01T23:59:59.000Z

469

Microsoft PowerPoint - Smart INL - EV Project Nissan Leaf Driving...  

NLE Websites -- All DOE Office Websites (Extended Search)

Electric Vehicle Driving and Charging Behavior Observed Early in The EV Project The EV Project John Smart, Idaho National Laboratory Stephen Schey, ECOtality North America 1...

470

Impacts of Cooling Technology on Solder Fatigue for Power Modules in Electric Traction Drive Vehicles: Preprint  

SciTech Connect

Describes three power module cooling topologies for electric traction drive vehicles: two advanced options using jet impingement cooling and one option using pin-fin liquid cooling.

O' Keefe, M.; Vlahinos, A.

2009-08-01T23:59:59.000Z

471

Progressive Dynamical Drive Train Modeling as Part of NREL Gearbox Reliability Collaborative (Poster)  

DOE Green Energy (OSTI)

The Gearbox Reliabiity Collaborative seeks to integrate several numerical models into the wind turbine drive train design process. This paper decribes these models.

Oyague, F.

2008-06-01T23:59:59.000Z

472

Battery Electric Vehicle Driving and Charging Behavior Observed Early in The EV Project  

DOE Green Energy (OSTI)

As concern about society's dependence on petroleum-based transportation fuels increases, many see plug-in electric vehicles (PEV) as enablers to diversifying transportation energy sources. These vehicles, which include plug-in hybrid electric vehicles (PHEV), range-extended electric vehicles (EREV), and battery electric vehicles (BEV), draw some or all of their power from electricity stored in batteries, which are charged by the electric grid. In order for PEVs to be accepted by the mass market, electric charging infrastructure must also be deployed. Charging infrastructure must be safe, convenient, and financially sustainable. Additionally, electric utilities must be able to manage PEV charging demand on the electric grid. In the Fall of 2009, a large scale PEV infrastructure demonstration was launched to deploy an unprecedented number of PEVs and charging infrastructure. This demonstration, called The EV Project, is led by Electric Transportation Engineering Corporation (eTec) and funded by the U.S. Department of Energy. eTec is partnering with Nissan North America to deploy up to 4,700 Nissan Leaf BEVs and 11,210 charging units in five market areas in Arizona, California, Oregon, Tennessee, and Washington. With the assistance of the Idaho National Laboratory, eTec will collect and analyze data to characterize vehicle consumer driving and charging behavior, evaluate the effectiveness of charging infrastructure, and understand the impact of PEV charging on the electric grid. Trials of various revenue systems for commercial and public charging infrastructure will also be conducted. The ultimate goal of The EV Project is to capture lessons learned to enable the mass deployment of PEVs. This paper is the first in a series of papers documenting the progress and findings of The EV Project. This paper describes key research objectives of The EV Project and establishes the project background, including lessons learned from previous infrastructure deployment and PEV demonstrations. One such previous study was a PHEV demonstration conducted by the U.S. Department of Energy's Advanced Vehicle Testing Activity (AVTA), led by the Idaho National Laboratory (INL). AVTA's PHEV demonstration involved over 250 vehicles in the United States, Canada, and Finland. This paper summarizes driving and charging behavior observed in that demonstration, including the distribution of distance driven between charging events, charging frequency, and resulting proportion of operation charge depleting mode. Charging demand relative to time of day and day of the week will also be shown. Conclusions from the PHEV demonstration will be given which highlight the need for expanded analysis in The EV Project. For example, the AVTA PHEV demonstration showed that in the absence of controlled charging by the vehicle owner or electric utility, the majority of vehicles were charged in the evening hours, coincident with typical utility peak demand. Given this baseline, The EV Project will demonstrate the effects of consumer charge control and grid-side charge management on electricity demand. This paper will outline further analyses which will be performed by eTec and INL to documenting driving and charging behavior of vehicles operated in a infrastructure-rich environment.

John Smart; Stephen Schey

2012-04-01T23:59:59.000Z

473

Integrally formed radio frequency quadrupole  

DOE Patents (OSTI)

An improved radio frequency quadrupole (10) is provided having an elongate housing (11) with an elongate central axis (12) and top, bottom and two side walls (13a-d) symmetrically disposed about the axis, and vanes (14a-d) formed integrally with the walls (13a-d), the vanes (14a-d) each having a cross-section at right angles to the central axis (12) which tapers inwardly toward the axis to form electrode tips (15a-d) spaced from each other by predetermined distances. Each of the four walls (13a-d), and the vanes (14a-d) integral therewith, is a separate structural element having a central lengthwise plane (16) passing through the tip of the vane, the walls (13a-d) having flat mounting surfaces (17, 18) at right angles to and parallel to the control plane (16), respectively, which are butted together to position the walls and vane tips relative to each other.

Abbott, Steven R. (Concord, CA)

1989-01-01T23:59:59.000Z

474

Orbit compensation for the time-varying elliptically polarized wiggler with switching frequency at 100 hz  

SciTech Connect

In October 1996, the elliptically polarized wiggler, installed in the X13 straight section of the NSLS X-ray ring, was commissioned at an operating frequency of 100 hz. This wiggler generates circularly polarized photons in the energy range of 0.1 to 10 keV with AC modulation of polarization helicity. The vertical magnetic field is produced by a hybrid permanent magnet structure, and the horizontal magnetic field is generated by an electromagnet capable of switching at frequencies up to 100 hz. Here, the authors discuss the compensation of the residual vertical and horizontal orbit motion utilizing a time-domain algorithm employing a function generator to drive trim coils at the wiggler ends, and the wideband high precision orbit measurement system of the X-ray ring. The residual orbit motion has been reduced to a level below 1 micron, and the device has been run in regular operations with no negative effect on other users.

Singh, O.; Krinsky, S.

1997-07-01T23:59:59.000Z

475

ANTENNA RADIATION NEAR THE LOCAL PLASMA FREQUENCY BY LANGMUIR WAVE EIGENMODES  

Science Conference Proceedings (OSTI)

Langmuir waves (LWs) in the solar wind are generated by electron beams associated with solar flares, interplanetary shock fronts, planetary bow shocks, and magnetic holes. In principle, LWs localized as eigenmodes of density fluctuations can emit electromagnetic (EM) radiation by an antenna mechanism near the local plasma frequency f{sub p} and twice the local plasma frequency. In this work, analytic expressions are derived for the radiated electric and magnetic fields and power generated near f{sub p} by LW eigenmodes. The EM wave power emitted near f{sub p} is predicted as a function of the eigenmode length scale L, maximum electric field, driving electron beam speed, and the ambient plasma density and temperature. The escape to a distant observer of f{sub p} radiation from a localized Langmuir eigenmode is also briefly explored as a function of the plasma conditions.

Malaspina, David M. [Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO 80303 (United States); Cairns, Iver H. [School of Physics, University of Sydney, New South Wales 2006 (Australia); Ergun, Robert E., E-mail: David.Malaspina@lasp.colorado.edu, E-mail: cairns@physics.usyd.edu.au, E-mail: ree@lasp.colorado.edu [Laboratory for Atmospheric and Space Physics, Department of Astrophysical and Planetary Sciences, University of Colorado, Boulder, CO 80303 (United States)

2012-08-10T23:59:59.000Z

476

Evaluation of 2004 Toyota Prius Hybrid Electric Drive System  

SciTech Connect

The 2004 Toyota Prius is a hybrid automobile equipped with a gasoline engine and a battery- and generator-powered electric motor. Both of these motive-power sources are capable of providing mechanical-drive power for the vehicle. The engine can deliver a peak-power output of 57 kilowatts (kW) at 5000 revolutions per minute (rpm) while the motor can deliver a peak-power output of 50 kW over the speed range of 1200-1540 rpm. Together, this engine-motor combination has a specified peak-power output of 82 kW at a vehicle speed of 85 kilometers per hour (km/h). In operation, the 2004 Prius exhibits superior fuel economy compared to conventionally powered automobiles. To acquire knowledge and thereby improve understanding of the propulsion technology used in the 2004 Prius, a full range of design characterization studies were conducted to evaluate the electrical and mechanical characteristics of the 2004 Prius and its hybrid electric drive system. These characterization studies included (1) a design review, (2) a packaging and fabrication assessment, (3) bench-top electrical tests, (4) back-electromotive force (emf) and locked rotor tests, (5) loss tests, (6) thermal tests at elevated temperatures, and most recently (7) full-design-range performance testing in a controlled laboratory environment. This final test effectively mapped the electrical and thermal results for motor/inverter operation over the full range of speeds and shaft loads that these assemblies are designed for in the Prius vehicle operations. This testing was undertaken by the Oak Ridge National Laboratory (ORNL) as part of the U.S. Department of Energy (DOE) - Energy Efficiency and Renewable Energy (EERE) FreedomCAR and Vehicle Technologies (FCVT) program through its vehicle systems technologies subprogram. The thermal tests at elevated temperatures were conducted late in 2004, and this report does not discuss this testing in detail. The thermal tests explored the derating of the Prius motor design if operated at temperatures as high as is normally encountered in a vehicle engine. The continuous ratings at base speed (1200 rpm) with different coolant temperatures are projected from test data at 900 rpm. A separate, comprehensive report on this thermal control study is available [1].

Staunton, Robert H [ORNL; Ayers, Curtis William [ORNL; Chiasson, J. N. [University of Tennessee, Knoxville (UTK); Burress, Timothy A [ORNL; Marlino, Laura D [ORNL

2006-05-01T23:59:59.000Z

477

Evaluation of 2004 Toyota Prius Hybrid Electric Drive System  

SciTech Connect

The 2004 Toyota Prius is a hybrid automobile equipped with a gasoline engine and a battery- and generator-powered electric motor. Both of these motive-power sources are capable of providing mechanical-drive power for the vehicle. The engine can deliver a peak-power output of 57 kilowatts (kW) at 5000 revolutions per minute (rpm) while the motor can deliver a peak-power output of 50 kW over the speed range of 1200-1540 rpm. Together, this engine-motor combination has a specified peak-power output of 82 kW at a vehicle speed of 85 kilometers per hour (km/h). In operation, the 2004 Prius exhibits superior fuel economy compared to conventionally powered automobiles. To acquire knowledge and thereby improve understanding of the propulsion technology used in the 2004 Prius, a full range of design characterization studies were conducted to evaluate the electrical and mechanical characteristics of the 2004 Prius and its hybrid electric drive system. These characterization studies included (1) a design review, (2) a packaging and fabrication assessment, (3) bench-top electrical tests, (4) back-electromotive force (emf) and locked rotor tests, (5) loss tests, (6) thermal tests at elevated temperatures, and most recently (7) full-design-range performance testing in a controlled laboratory environment. This final test effectively mapped the electrical and thermal results for motor/inverter operation over the full range of speeds and shaft loads that these assemblies are designed for in the Prius vehicle operations. This testing was undertaken by the Oak Ridge National Laboratory (ORNL) as part of the U.S. Department of Energy (DOE)-Energy Efficiency and Renewable Energy (EERE) FreedomCAR and Vehicle Technologies (FCVT) program through its vehicle systems technologies subprogram. The thermal tests at elevated temperatures were conducted late in 2004, and this report does not discuss this testing in detail. The thermal tests explored the derating of the Prius motor design if operated at temperatures as high as is normally encountered in a vehicle engine. The continuous ratings at base speed (1200 rpm) with different coolant temperatures are projected from test data at 900 rpm. A separate, comprehensive report on this thermal control study is available [1].

Staunton, R.H.; Ayers, C.W.; Chiasson, J.N. (U Tennessee-Knoxville); Burress, B.A. (ORISE); Marlino, L.D.

2006-05-01T23:59:59.000Z

478

Optimization of direct drive induction motors for electric ship propulsion with high speed propellers  

Science Conference Proceedings (OSTI)

Direct drive electric ship propulsion can offer increased flexibility and reduced overall fuel consumption compared to geared mechanical systems [Davis 1987, Doerry 2007]. As a well-established technology, induction motors are a dependable and economical ... Keywords: AC motors, induction motor drives, induction motors, thermal analysis

S. C. Englebretson; J. L. Kirtley, Jr; C. Chryssostomidis

2009-07-01T23:59:59.000Z

479

Parallel Magnetic Flow Electromagnet for Movable Coil Control-rod Driving Mechanism  

SciTech Connect

The parallel magnetic flow electromagnet can effectively relax the saturation, which easily takes place in the single magnetic flow electromagnet, and accordingly can improve the drive capacity of the movable coil electromagnet drive mechanism for a mobile reactor control rod. (authors)

Jige, Zhang [School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200030, P.R.China, 1954 Huashan road, Shanghai (China)

2006-07-01T23:59:59.000Z

480

Best Practices for Energy Efficient Cleanrooms Efficient HVAC Systems: Variable-Speed-Drive Chillers  

E-Print Network (OSTI)

LBNL-58636 Best Practices for Energy Efficient Cleanrooms Efficient HVAC Systems: Variable Efficient Cleanrooms Efficient HVAC Water Systems: Variable-Speed-Drive Chillers Tengfang Xu Contents HVAC.................................................................................................................................... 6 #12;HVAC Water Systems Variable-Speed-Drive Chillers Summary Cleanroom energy benchmarking data

Note: This page contains sample records for the topic "frequency drives vfds" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

OMEGA ICF experiments and preparation for direct drive ignition on NIF  

E-Print Network (OSTI)

OMEGA ICF experiments and preparation for direct drive ignition on NIF R.L. McCrorya , R.E. Bahra) is investigating various theoretical aspects of a direct drive National Ignition Facility (NIF) ignition target equivalent to those planned for the NIF. The current experimental studies on OMEGA address the essential

482

Study on Regenerative Brake Method of Hybrid Electric Drive System of Armored Vehicle  

Science Conference Proceedings (OSTI)

Aiming at characteristics of regenerative brake of hybrid electric drive system of tracked armored vehicle, mechanism of regenerative brake by pulse width modulation is in-depth analyzed, motor speed, brake current, feedback current, feedback energy ... Keywords: hybrid electric drive, motor, regenerative brake

Li Hua; Zhong Meng-chun; Zhang Jian; Xu Da; Lin Hai

2011-10-01T23:59:59.000Z

483

Paper Number Development of a Hydro-Mechanical Hydraulic Hybrid Drive  

E-Print Network (OSTI)

of a passenger car. The developed hydro-mechanical drive train enables independent control of the torque at eachPaper Number Development of a Hydro-Mechanical Hydraulic Hybrid Drive Train with Independent Wheel for the Center for Compact and Efficient Fluid Power at the University of Minnesota. The hydro-mechanical hybrid

Li, Perry Y.

484

Contextual push-to-talk: shortening voice dialogs to improve driving performance  

Science Conference Proceedings (OSTI)

We present a driving simulator-based evaluation of a new technique for simplifying in-vehicle device interactions and thereby improving driver safety. We show that the use of multiple, contextually linked push-to-talk buttons (Multi-PTT) shortens voice ... Keywords: driving simulation, listen button, multimodality, push-to-talk, speech recognition, voice dialogs

Garrett Weinberg; Bret Harsham; Clifton Forlines; Zeljko Medenica

2010-09-01T23:59:59.000Z

485

Current Drive and Heating on ARIES-RS/AT, and FIRE-AT  

E-Print Network (OSTI)

requirement, a critical element in systems analysis for the power plant economics. · Select most viable Drive Scenarios for ARIES-RS/AT 1-GWe Power Plants ARIES-AT requires much less current drive power than - Choice of wave launchers · RFCD assessment for FIRE AT modes, based on ARIES experience: - without wall

486

A robust forced dynamic sliding mode minimum energy position controller for permanent magnet synchronous motor drives  

Science Conference Proceedings (OSTI)

As a contribution towards improving the environment, a new position controller for vector controlled electric drives employing permanent magnet synchronous motors (PMSM) is presented that achieves approximately 27% less frictional energy loss than a ... Keywords: forced dynamic control, minimum energy manoeuvres, sliding mode control, synchronous motor drives

Stephen J. Dodds; Gunaratnam. Sooriyakumar; Roy Perryman

2008-04-01T23:59:59.000Z

487

Search on Modeling and Collaborative Simulation for Electric Drive Wheeled Armored Vehicle  

Science Conference Proceedings (OSTI)

In order to evaluate the performance of electric transmission wheeled armored vehicle, models of motor driving system and dynamics of the 8 wheels drive vehicles based on ADAMS/Car were constructed, which compose the model of collaborative simulation ... Keywords: ADAMS/Car, Matlab, electric transmission, wheeled armored vehicle, collaborative simulation, dynamic performance

Zili Liao, Guibing Yang, Chunguang Liu, Yu Xiang

2012-07-01T23:59:59.000Z

488

System analysis approach for the identification of factors driving crude oil prices  

Science Conference Proceedings (OSTI)

A system analysis approach is proposed to identify the main factors driving international crude oil prices by integrating a partial least squares model, an vector error correction model and the directed acyclic graph method. The different mechanisms ... Keywords: Crude oil price, DAG, Driving factors, Financial crisis, VECM

Qiang Ji

2012-11-01T23:59:59.000Z

489

2010 Google -Map data 2010 Google, Sanborn -Driving directions to St Peter Claver School  

E-Print Network (OSTI)

©2010 Google - Map data ©2010 Google, Sanborn - Driving directions to St Peter Claver School (504.google.com/maps?client=firefox-a&rls=org.mozilla:e... 1 of 2 9/2/10 10:45 AM #12;Hide Driving directions ©2010 Google Report a problem St Peter Claver School 1020 North Prieur Street New Orleans, LA 70116

490

Some theoretical results useful in analyzing well performance under solution-gas drive  

SciTech Connect

This paper presents results pertinent to the analysis of well performance in solution-gas-drive systems. The characteristics of wells producing solution-gas-drive systems are documented. Procedures to correlate multiphase flow solutions with single-phase flow systems for both transient and boundary-dominated flows are presented.

Camacho, R.G. (National Univ. of Mexico/PEMEX (MX)); Raghavan, R. (Phillips Petroleum Co. (US))

1991-06-01T23:59:59.000Z

491

A Multiphase Traction/Fast-Battery-Charger Drive for Electric or Plug-in Hybrid Vehicles  

E-Print Network (OSTI)

A Multiphase Traction/Fast-Battery-Charger Drive for Electric or Plug-in Hybrid Vehicles Solutions and torque ripples. Keywords- Electric Vehicle, Plug-in Hybrid Vehicle, On-board Battery Charger, H on an original electric drive [1]-[3] dedicated to the vehicle traction and configurable as a battery charger

Paris-Sud XI, Université de

492

VISUALIZATION OF SOLUTION GAS DRIVE IN VISCOUS OIL SUPRI TR -126  

E-Print Network (OSTI)

is important during nucleation. Li and Yortsos (1991) visualized gas formation by pressure decline of solution gas drive behavior in heavy oil. Five different natural and synthetic oils were used, one of whichVISUALIZATION OF SOLUTION GAS DRIVE IN VISCOUS OIL SUPRI TR - 126 By D.S. George and A.R. Kovscek

493

Entropy driven multi-photon frequency up-conversion  

E-Print Network (OSTI)

Frequency up-conversion of few low-energy photons into a single high-energy photon, greatly contributes to imaging, light sources, detection and other fields of research. However, it offers negligible efficiency when up-converting many photons. This is because coherent process are fundamentally limited due to momentum conservation requirements, while in incoherent up-conversion the finite intermediate states lifetime requires huge intensities. Thermodynamically, conventional incoherent up-conversion is driven by the internal energy of the incoming photons. However, a system can also drive work through change in its collective properties such as entropy. Here we experimentally demonstrate entropy driven ten-fold up-conversion from 10.6{\\mu} to 1{\\mu}m at internal efficiency above 27% and total efficiency above 10%. In addition, the emitted radiance at 1{\\mu}m exceeds the maximal possible Black-Body radiance of our device, indicating emitter's effective-temperature that is considerably above the bulk-temperatur...

Manor, Assaf; Rotschild, Carmel

2013-01-01T23:59:59.000Z

494

Hybrid-drive implosion system for ICF targets  

DOE Patents (OSTI)

Hybrid-drive implosion systems (20,40) for ICF targets (10,22,42) are described which permit a significant increase in target gain at fixed total driver energy. The ICF target is compressed in two phases, an initial compression phase and a final peak power phase, with each phase driven by a separate, optimized driver. The targets comprise a hollow spherical ablator (12) surroundingly disposed around fusion fuel (14). The ablator is first compressed to higher density by a laser system (24), or by an ion beam system (44), that in each case is optimized for this initial phase of compression of the target. Then, following compression of the ablator, energy is directly delivered into the compressed ablator by an ion beam driver system (30,48) that is optimized for this second phase of operation of the target. The fusion fuel (14) is driven, at high gain, to conditions wherein fusion reactions occur. This phase separation allows hydrodynamic efficiency and energy deposition uniformity to be individually optimized, thereby securing significant advantages in energy gain. In additional embodiments, the same or separate drivers supply energy for ICF target implosion.

Mark, James W. (Danville, CA)

1988-01-01T23:59:59.000Z

495

Clean Cities Drive Vol 3 Issue 2 - Spring 1996  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

to the fifth issue of the U.S. to the fifth issue of the U.S. 1 w"" Department of Energy's (DOE) Clean Cities Drive. Each issue of the I I newsletter will bring you valuable information from the Clean Cities pro- I I gram to help you succeed in putting more alternative fuel vehicles (AFVs) I I onto our roads. If you have a story to 1 1 tell, a picture to share, or information of interest to Clean Cities participants, 1 1 please call the Clean Cities Hodine at 1 -800-CCITIES. 1 1 1 Technical and Training Centers Meet Clean Cities' Needs for Skilled Mechanics I NEW M E X I C O SETS EXAMPL C O N N E C I I C U T COLLEGE GETS S E R I O U S NEW T R A I N I N G STANDARDS RELEASED 3 Stakeholders' Corner FOR SOME STAKEHOLDERS, AFVS ARE JUST PART OF T H E I R B I G GREEN P I C T U R Total Petroleum's Cash for Clunkers

496

Hybrid-drive implosion system for ICF targets  

DOE Patents (OSTI)

Hybrid-drive implosion systems for ICF targets are described which permit a significant increase in target gain at fixed total driver energy. The ICF target is compressed in two phases, an initial compression phase and a final peak power phase, with each phase driven by a separate, optimized driver. The targets comprise a hollow spherical ablator surroundingly disposed around fusion fuel. The ablator is first compressed to higher density by a laser system, or by an ion beam system, that in each case is optimized for this initial phase of compression of the target. Then, following compression of the ablator, energy is directly delivered into the compressed ablator by an ion beam driver system that is optimized for this second phase of operation of the target. The fusion fuel is driven, at high gain, to conditions wherein fusion reactions occur. This phase separation allows hydrodynamic efficiency and energy deposition uniformity to be individually optimized, thereby securing significant advantages in energy gain. In additional embodiments, the same or separate drivers supply energy for ICF target implosion. 3 figs.

Mark, J.W.K.

1987-10-14T23:59:59.000Z

497

Fuel Economy Driver Interfaces: Driving Simulator Study of Component Concepts  

E-Print Network (OSTI)

A fuel economy driver interface (FEDI) gives a driver an indication of fuel usage or efficiency. Many passenger vehicles in recent model years have FEDIs and they have been included in some vehicle models for decades. FEDIs present fuel economy information in a variety of forms. Some show fuel economy in miles per gallon (mpg) while others provide a relative measure of economy or provide an alert if fuel economy is especially poor. The appearances of FEDIs vary drastically between vehicle makes and models. FEDIs can provide numerical output, analog or digital gauges, bar charts, illuminator lamps, and a variety of other display features. With the recent emergence of high-resolution LCD screens in cars, detailed and complex color displays are possible, and these make feasible a variety of new FEDI concepts. FEDIs may even include vehicle-adaptive features that influence some aspect of vehicle performance in response to inefficient driver behaviors. While FEDIs have the potential to encourage efficient and safe driving, it is possible that the displays themselves might cause distraction at the expense

unknown authors

2010-01-01T23:59:59.000Z

498

Gas Powered Air Conditioning Absorption vs. Engine-Drive  

E-Print Network (OSTI)

It used to be that the only alternative to costly electric air conditioning was the double-effect gas-fired absorption chiller/heaters. Beginning in the 1980's, they were the "star" equipment promoted by gas companies throughout the nation. Although not a new technology at the time, neither was the gas engine. But now in the 19901s, gas engine-drive (GED) chillers have "hit" the air conditioning market with a "bang". In the Lone Star Gas Company area in 1995, GED chillers are now being considered in as many projects as are Absorption. units. Where once the only studies being analyzed were absorption vs. electric chiller operation costs. Now, the choice is: Why, Where, and How to choose between gas fired Absorption and GED chillers. WHY Absorption or Engine ? . Absorption uses the most environmentally friendly refrigerant - water. . Absorption chillers are chiller/heaters Absorption chillers are manufactured by the four US major manufacturers Absorption chillers have few moving parts . Engine chillers provide "free" hot water Engine chillers retrofit with DX systems . Engine chillers use less gas per ton WHERE Do Absorption And Engine Chillers Belong? . Absorption: Office buildings, restaurants, industries, churches, universities . Engine: Hospitals, universities, hotels, apartments, industries HOW To Choose Between Absorption And Engine Chillers? Energy cost Operation