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Note: This page contains sample records for the topic "motor power rating" 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.


1

Linear Motor Powered Transportation  

E-Print Network (OSTI)

This special issue on linear-motor powered transportation covers both supporting technologies and innovative transport systems in various parts of the World, as this technology moves from the lab to commercial operations. ...

Thornton, Richard D.

2

Electric Motors and Power Quality Disturbances  

Science Conference Proceedings (OSTI)

Electric motors and motor-driven systems form the backbone of the industrial sector, but these systems are susceptible to several power quality-related problems. Unbalanced voltages; voltage sags, swells, and interruptions; and overvoltages or undervoltages can cause havoc with motors, including premature motor failure from increased heating, motor inefficiency, poor power factor, and decreased starting and fullload torques. Because motor failures often result in loss of revenue, industries need to take ...

2011-12-30T23:59:59.000Z

3

Definition: Rated power | Open Energy Information  

Open Energy Info (EERE)

Definition Definition Edit with form History Facebook icon Twitter icon » Definition: Rated power Jump to: navigation, search Dictionary.png Rated power The power output of a device under specific or nominal operating conditions[1] View on Wikipedia Wikipedia Definition In electrical and electronic engineering, the power rating of a device is a guideline set by the manufacturer as a maximum power to be used with that device. This limit is usually set somewhat lower than the level where the device will be damaged, to allow a margin of safety. In devices which primarily dissipate electric power or convert it into mechanical power, such as resistors, electric motors, and speakers, the power rating given is usually the maximum power that can be safely dissipated by the

4

Cooling Tower Fan Motor Power Optimization Study  

Science Conference Proceedings (OSTI)

Cooling towers are in use at more than 200 major electric generating plants in the United States, representing approximately 800 units and a total of more than 210,000 MW. The auxiliary power consumed by cooling tower fan motors can significantly reduce the net power output of steam-cycle power plants. Cooling tower specifications are established by the economic and operational requirements of maximum unit load and the most demanding environmental conditions expected in the towers locale. Since power pl...

2011-11-16T23:59:59.000Z

5

Dual power, constant speed electric motor system  

DOE Patents (OSTI)

A dual capacity permanent split capacitor electric motor system is provided with a stator having main and auxiliary windings. The main stator winding includes two winding sections which are connected in parallel with each other and across a pair of line terminals while the auxiliary winding is connected in series with a capacitor to form a circuit branch which is connected between the line terminals for operation at a first output power level. Switching means are provided to reconnect the main stator winding sections in series with each other and in series with a second capacitor to form a circuit branch which is connected between the line terminals while the stator auxiliary winding is connected directly between the line terminals for operation at a second output power level. Automatic rotation reversal occurs when the motor switches from the first to the second output power level.

Kirschbaum, Herbert S. (Asheville, NC)

1984-01-01T23:59:59.000Z

6

Dual power, constant speed electric motor system  

DOE Patents (OSTI)

A dual capacity permanent split capacitor electric motor system is provided with a stator having main and auxiliary windings. The main stator winding includes two winding sections which are connected in parallel with each other and across a pair of line terminals while the auxiliary winding is connected in series with a capacitor to form a circuit branch which is connected between the line terminals for operation at a first output power level. Switching means are provided to reconnect the main stator winding sections in series with each other and in series with a second capacitor to form a circuit branch which is connected between the line terminals while the stator auxiliary winding is connected directly between the line terminals for operation at a second output power level. Automatic rotation reversal occurs when the motor switches from the first to the second output power level. 6 figs.

Kirschbaum, H.S.

1984-07-31T23:59:59.000Z

7

Traffic of cytoskeletal motors with disordered attachment rates  

E-Print Network (OSTI)

Motivated by experimental results on the interplay between molecular motors and tau proteins, we extend lattice-based models of intracellular transport to include a second species of particle which locally influences the motor-filament attachment rate. We consider various exactly solvable limits of a stochastic multi-particle model before focusing on the low-motor-density regime. Here, an approximate treatment based on the random walk behaviour of single motors gives good quantitative agreement with simulation results for the tau-dependence of the motor current. Finally, we discuss the possible physiological implications of our results.

H. Grzeschik; R. J. Harris; L. Santen

2008-06-24T23:59:59.000Z

8

Lab 4 -Motor Constants and Sensor Calibration Consider a DC servo motor which is connected to a power supply. The motor inertia is Jm. The rotational  

E-Print Network (OSTI)

Lab 4 - Motor Constants and Sensor Calibration PRE-LAB Consider a DC servo motor which is connected to a power supply. The motor inertia is Jm. The rotational damping in the motor is bm. The motor produces a torque Tm = Kmi where Km is the motor's torque constant and i is the current from the power supply. a

Stanford University

9

Ultra-Efficient and Power Dense Electric Motors for U. S. Industry  

SciTech Connect

The primary purpose of this project was to combine the ease-of-installation and ease-of-use attributes of industrial induction motors with the low-loss and small size and weight advantages of PM motors to create an ultra-efficient, high power density industrial motor that can be started across-the-line or operated from a standard, Volts/Hertz drive without the need for a rotor position feedback device. PM motor products that are currently available are largely variable speed motors that require a special adjustable speed drive with rotor position feedback. The reduced size and weight helps to offset the magnet cost in order make these motors commercially viable. The scope of this project covers horsepower ratings from 20 ? 500. Prototypes were built and tested at ratings ranging from 30 to 250 HP. Since fans, pumps and compressors make up a large portion of industrial motor applications, the motor characteristics are tailored to those applications. Also, since there is extensive use of adjustable frequency inverters in these applications, there is the opportunity to design for an optimal pole number and operate at other than 60 Hz frequency when inverters are utilized. Designs with four and eight pole configurations were prototyped as part of this work. Four pole motors are the most commonly used configuration in induction motors today. The results of the prototype design, fabrication, and testing were quite successful. The 50 HP rating met all of the design goals including efficiency and power density. Tested values of motor losses at 50 HP were 30% lower than energy efficient induction motors and the motor weight is 35% lower than the energy efficient induction motor of the same rating. Further, when tested at the 30 HP rating that is normally built in this 286T frame size, the efficiency far exceeds the project design goals with 30 HP efficiency levels indicating a 55% reduction in loss compared to energy efficient motors with a motor weight that is a few percentage points lower than the energy efficient motor. This 30 HP rating full load efficiency corresponds to a 46% reduction in loss compared to a 30 HP NEMA Premium? efficient motor. The cost goals were to provide a two year or shorter efficiency-based payback of a price premium associated with the magnet cost in these motors. That goal is based on 24/7 operation with a cost of electricity of 10 cents per kW-hr. Similarly, the 250 HP prototype efficiency testing was quite successful. In this case, the efficiency was maximized with a slightly less aggressive reduction in active material. The measured full load efficiency of 97.6% represents in excess of a 50% loss reduction compared to the equivalent NEMA Premium Efficiency induction motor. The active material weight reduction was a respectable 14.5% figure. This larger rating demonstrated both the scalability of this technology and also the ability to flexibly trade off power density and efficiency. In terms of starting performance, the 30 ? 50 HP prototypes were very extensively tested. The demonstrated capability included the ability to successfully start a load with an inertia of 25 times the motor?s own inertia while accelerating against a load torque following a fan profile at the motor?s full nameplate power rating. This capability will provide very wide applicability of this motor technology. The 250 HP prototype was also tested for starting characteristics, though without a coupled inertia and load torque. As a result it was not definitively proven that the same 25 times the motor?s own inertia could be started and synchronized successfully at 250 HP. Finite element modeling implies that this load could be successfully started, but it has not yet been confirmed by a test.

Melfi, Michael J.; Schiferl, Richard F.; Umans, Stephen D.

2013-03-12T23:59:59.000Z

10

Wholesale Power Rate Schedules | Department of Energy  

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

Services » Rate Schedules » Wholesale Power Rate Schedules Services » Rate Schedules » Wholesale Power Rate Schedules Wholesale Power Rate Schedules October 1, 2012 ALA-1-N Wholesale Power Rate Schedule Area: PowerSouth Energy Cooperative System: Georgia-Alabama-South Carolina October 1, 2012 Duke-1-E Wholesale Power Rate Schedule Area: Duke On-System System: Georgia-Alabama-South Carolina October 1, 2012 Duke-2-E Wholesale Power Rate Schedule Area: Central System: Georgia-Alabama-South Carolina October 1, 2012 Duke-3-E Wholesale Power Rate Schedule Area: None System: Georgia-Alabama-South Carolina October 1, 2012 Duke-4-E Wholesale Power Rate Schedule Area: Duke Self-Schedulers System: Georgia-Alabama-South Carolina October 1, 2012 MISS-1-N Wholesale Power Rate Schedule Area: South Mississippi Electric Power Association

11

Wholesale Power Rate Schedules | Department of Energy  

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

Services » Rate Schedules » Wholesale Power Rate Schedules Services » Rate Schedules » Wholesale Power Rate Schedules Wholesale Power Rate Schedules October 1, 2012 ALA-1-N Wholesale Power Rate Schedule Area: PowerSouth Energy Cooperative System: Georgia-Alabama-South Carolina October 1, 2012 Duke-1-E Wholesale Power Rate Schedule Area: Duke On-System System: Georgia-Alabama-South Carolina October 1, 2012 Duke-2-E Wholesale Power Rate Schedule Area: Central System: Georgia-Alabama-South Carolina October 1, 2012 Duke-3-E Wholesale Power Rate Schedule Area: None System: Georgia-Alabama-South Carolina October 1, 2012 Duke-4-E Wholesale Power Rate Schedule Area: Duke Self-Schedulers System: Georgia-Alabama-South Carolina October 1, 2012 MISS-1-N Wholesale Power Rate Schedule Area: South Mississippi Electric Power Association

12

Wholesale Power Rate Schedules | Department of Energy  

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

Schedules Schedules Wholesale Power Rate Schedules October 1, 2011 CBR-1-H Wholesale Power Rate Schedule Area: Big Rivers and Henderson, KY System: CU October 1, 2011 CSI-1-H Wholesale Power Rate Schedule Area: Southern Illinois System: CU October 1, 2011 CK-1-H Wholesale Power Rate Schedule Area: KU Area System: CU October 1, 2011 CEK-1-H Wholesale Power Rate Schedule Area: East Kentucky System: CU October 1, 2011 CC-1-I Wholesale Power Rate Schedule Area: CP&L Area, Western Division System: CU September 20, 2011 JW-1-J Wholesale Power Rate Schedule Area: Woodruff Preference Customer System: Jim Woodruff September 20, 2011 JW-2-F Wholesale Power Rate Schedule Area: Florida Power Corporation System: Jim Woodruff November 17, 2010 AP-1-B Wholesale Power Rate Schedule Area: American Electric Power

13

Application of motor capacitors to improve facility power usage in the industrial setting  

E-Print Network (OSTI)

As deregulation of the electric power system in the United States unfolds, many customers are experiencing changes in their billing rate structure. Some face the addition of power factor penalty tariffs, and seek ways to minimize the added burden. The installation of entrance capacitor banks is the common response, but fails to take complete advantage of capacitor abilities. Other project designs exist that can harness these advantages to the full benefit of the customer. This work will show that distributing shunt capacitors in parallel with induction motors will elevate power factor and voltage, and also decrease ohmic losses in the wiring and protection devices that supply the motor. This reduction often produces a better overall economic solution due to energy savings. The distribution of capacitors at induction motors reduces the reactive current in the branch of the distribution system that supplies them. A reduction in the total current flowing to the motor along the distribution system results in smaller losses throughout the system. As losses diminish, the total real power drawn through the distribution system is lessened, and electric bills are reduced. This alternative to entrance capacitor banks is not as commonly implemented. A misconception that the resistance in facility distribution systems is relatively low has discouraged distributed motor capacitor installation for overall facility power factor correction, in favor of entrance capacitor banks. We will show that the resistance in the distribution system is higher than typically thought, that motor capacitors can exploit this fact, and can often economically outperform entrance capacitor banks which are terminated at the point of incoming utility power. Motor capacitors are not a new technology. They are commercially available off the shelf technology, suitable for power factor correction for induction motors. Distributed capacitors can be utilized for all significantly sized induction motors in a facility. The elevation in power factor and voltage, reduction in reactive current and real power are calculated, and trends are observed. The matter is considered from both the standpoint of engineering and economics to provide an integrated study.

Hillhouse, William Jeffrey

2005-08-01T23:59:59.000Z

14

Electric Motors Using High Temperature Superconducting Materials Applied to Power Generating Station Equipment  

Science Conference Proceedings (OSTI)

Large high-temperature superconducting (HTS) electric motors have the potential to operate with much greater efficiencies than conventional iron core induction motors of the same rating. This study describes the design and successful testing in the superconducting state of two synchronous motors, a 2 horsepower motor with stationary HTS field coils and a 5 horsepower motor with rotating HTS field coils.

1997-03-24T23:59:59.000Z

15

Extended Constant Power Speed Range of the Brushless DC Motor Through Dual Mode Inverter Control  

SciTech Connect

The trapezoidal back electromotive force (emf) brushless direct current (dc) motor (BDCM) with surface-mounted magnets has high-power density and efficiency especially when rare-earth magnet materials are used. Traction applications, such as electric vehicles, could benefit significantly from the use of such motors. Unfortunately, a practical means for driving the motor over a constant power speed ratio (CPSR) of 5:1 or more has not yet been developed. A key feature of these motors is that they have low internal inductance. The phase advance method is effective in controlling the motor power over such a speed range, but the current at high speed may be several times greater than that required at the base speed. The increase in current during high-speed operation is due to the low motor inductance and the action of the bypass diodes of the inverter. The use of such a control would require increased current rating of the inverter semiconductors and additional cooling for the inverter, where the conduction losses increase proportionally with current, and especially for the motor, where the losses increase with the square of the current. The high current problems of phase advance can be mitigated by adding series inductance; however, this reduces power density, requires significant increase in supply voltage, and leaves the CPSR performance of the system highly sensitive to variations in the available voltage. A new inverter topology and control scheme has been developed that can drive low-inductance BDCMs over the CPSR that would be required in electric vehicle applications. This new controller is called the dual-mode inverter control (DMIC). It is shown that the BDCM has an infinite CPSR when it is driven by the DMIC.

Lawler, J.S.

2000-06-23T23:59:59.000Z

16

Perspective: Power Lines and Motor Vehicle Electronics  

Science Conference Proceedings (OSTI)

Recent news reports have suggested that the operation of automotive electronic systems (including sudden acceleration) could be affected by the electric and magnetic fields associated with power transmission lines. Based on electromagnetic fundamentals and knowledge of the levels of electric fields, magnetic fields and RF fields from transmission lines, one can evaluate the possibility of an interaction between these exposures and the electronic systems within automobiles, both electric and conventional.

2010-06-06T23:59:59.000Z

17

Rio Grande Project Power Sales Rate History  

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

Power Sales Rate History Updated: 1022009 Rate Schedule Effective Dates Energy (MillskWh) Capacity (kW-mo.) Combined (MillskWh) R5-F1 1940 - 1949 3.000 - 8.000 (declining...

18

Collbran Project Power Sales Rate History  

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

Power Sales Rate History Updated: 1022009 Rate Schedule Effective Dates Energy (MillskWh) Capacity (kW-mo.) Combined (MillskWh) Contract 1262 - 1283 (Firm Only) (Nonfirm...

19

1996 Wholesale Power and Transmission Rate Schedules.  

Science Conference Proceedings (OSTI)

Bonneville Power Administration`s (BPA) 1996 Wholesale Power Rate Schedules, 1996 Ancillary Products and Services Rate Schedule, 1996 Transmission Rate Schedules, and General Rate Schedule Provisions, contained herein, were approved on an interim basis effective October 1, 1996. These rate schedules and provisions were approved by the Federal Energy Regulatory Commission (FERC), United States Department of Energy, in September 1996 (Docket Nos EF96-2011-000 and EF96f-2021-000). These rate schedules and General Rate Schedule Provisions were approved on a final basis by the FERC July 30, 1997, in Dept. of Energy--Bonneville Power Administration, Docket Nos. EF96-2011-000 and EF96-2021-000. Except as noted elsewhere, these 1996 rate schedules and provisions supersede BPA`s Wholesale Power Rate Schedules and General Rate Schedule Provisions, and Transmission Rate Schedules and General Transmission Rate Schedule Provisions, effective October 1, 1995. These rate schedules and general rate schedule provisions include all errata.

United States. Bonneville Power Administration.

1996-10-01T23:59:59.000Z

20

Method and apparatus for monitoring motor operated valve motor output torque and power at valve seating  

DOE Patents (OSTI)

A method and apparatus are provided for monitoring a motor operated valve during the brief period when the valve seats and the torque switch trips to deenergize the valve motor. The method uses voltage measurements on the load side of a deenergizing switch that opens to deenergize the motor to determine, among other things, final motor rotational speed and the decelerating torque at motor deenergization.

Casada, Donald A. (Oak Ridge, TN)

1996-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "motor power rating" 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

Method and apparatus for monitoring motor operated valve motor output torque and power at valve seating  

DOE Patents (OSTI)

A method and apparatus are provided for monitoring a motor operated valve during the brief period when the valve seats and the torque switch trips to deenergize the valve motor. The method uses voltage measurements on the load side of a deenergizing switch that opens to deenergize the motor to determine, among other things, final motor rotational speed and the decelerating torque at motor deenergization. 14 figs.

Casada, D.A.

1996-01-16T23:59:59.000Z

22

Seedskadee Participating Project Power Sales Rate History  

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

Power Sales Rate History Updated: 1022009 Rate Schedule Effective Dates Energy (MillskWh) Capacity (kW-mo.) Combined (MillskWh) R4-F1 thru 474 3.000 1.275 6.000 UC-F1 4...

23

Interim report on the state-of-the-art of solid-state motor controllers. Part 4. Failure-rate and failure-mode data  

SciTech Connect

An assessment of the reliability of solid-state motor controllers for nuclear power plants is made. Available data on failure-rate and failure-mode data for solid-state motor controllers based on industrial operating experience is meager; the data are augmented by data on other solid-state power electronic devices that are shown to have components similar to those found in solid-state motor controllers. In addition to large nonnuclear solid-state adjustable-speed motor drives, the reliability of nuclear plant inverter systems and high-voltage solid-state dc transmission-line converters is assessed. Licensee Event Report analyses from several sources, the open literature, and personal communications are used to determine the realiability of solid-state devices typical of those expected to be used in nuclear power plants in terms of failures per hour.

Jaross, R.A.

1983-09-01T23:59:59.000Z

24

Aging assessment of large electric motors in nuclear power plants  

Science Conference Proceedings (OSTI)

Large electric motors serve as the prime movers to drive high capacity pumps, fans, compressors, and generators in a variety of nuclear plant systems. This study examined the stressors that cause degradation and aging in large electric motors operating in various plant locations and environments. The operating history of these machines in nuclear plant service was studied by review and analysis of failure reports in the NPRDS and LER databases. This was supplemented by a review of motor designs, and their nuclear and balance of plant applications, in order to characterize the failure mechanisms that cause degradation, aging, and failure in large electric motors. A generic failure modes and effects analysis for large squirrel cage induction motors was performed to identify the degradation and aging mechanisms affecting various components of these large motors, the failure modes that result, and their effects upon the function of the motor. The effects of large motor failures upon the systems in which they are operating, and on the plant as a whole, were analyzed from failure reports in the databases. The effectiveness of the industry`s large motor maintenance programs was assessed based upon the failure reports in the databases and reviews of plant maintenance procedures and programs.

Villaran, M.; Subudhi, M. [Brookhaven National Lab., Upton, NY (United States)

1996-03-01T23:59:59.000Z

25

Three-phase power supplying system for induction motor of the diesel-electric locomotive  

Science Conference Proceedings (OSTI)

In the railway traction systems, an important role play Diesel-electric locomotive. The AC traction motor proves its advantages compared to the DC older motor, but the supply (the power inverter) is more sophisticated and expensive and, in many cases, ...

M. Huzau; Eva-Henrietta Dulf; V. Tulbure; Cl. Festila

2008-05-01T23:59:59.000Z

26

Nuclear Maintenance Applications Center: Repair and Reconditioning Specification Guidance for AC Squirrel-Cage and Salient Pole Sync hronous Motors with Voltage Ratings of 2.3 to 13.2 kV: Revision 1 of 1000897  

Science Conference Proceedings (OSTI)

The power industry is experiencing a loss of expertise as the workforce ages and some work is being outsourced to specialty suppliers. Many of the major electric motors in plants were also beginning to experience aging effects. To assist with obtaining proper motor service, EPRI published Report 1000897, Repair and Reconditioning Specification for AC Squirrel-Cage Motors with Voltage Ratings of 2.3 to 13.2 kV in 2000.

2008-12-18T23:59:59.000Z

27

ESS 2012 Peer Review - Higher Power Motor for ARPA-E Flywheel...  

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

Higher Power Motor for ARPA-E Flywheel Limitations of ARPA-E Flywheel * 1 Hour of Storage Program Tasks * Add Back-Iron to Stator to Increase Magnet Flux g * Limited to Longer Term...

28

Analysis of a PM DC motor model for application in feedback design for electric-powered mobility vehicles  

Science Conference Proceedings (OSTI)

Accurate modelling of Permanent Magnet (PM) DC motors is a prerequisite for expedient feedback design of electric-powered mobility vehicles. This paper identifies the parameters in the ideal equations for PM DC motors and considers the methods ... Keywords: electric-powered mobility vehicles, feedback design, frictional torque, model accuracy, modelling, permanent magnet DC motors models

Patrick Wolm; XiaoQi Chen; J. Geoffrey Chase; Warren Pettigrew; Christopher E. Hann

2010-08-01T23:59:59.000Z

29

Guideline for the Specification of Replacement and Spare AC Squirrel-Cage Induction Motors having Voltage Ratings of 2,300V to 13,20 0V  

Science Conference Proceedings (OSTI)

This specification was developed by the Application Working Group which is part of the Large Electric Motor Users Group (LEMUG). This specification was developed to assist electric motor owners who find themselves in the need of a replacement motor or have decided that they should obtain a spare motor for a motor that they have deemed to be critical to their process. Since many power plant motors were supplied in the late 1970s, many processes, suppliers, manufacturing, and testing standards have changed...

2005-12-23T23:59:59.000Z

30

Power Plant Electrical Reference Series: Guide for Rewinding and Reconditioning Medium Voltage Electric Motors: Volume 17  

Science Conference Proceedings (OSTI)

When medium-voltage motors fail, plant managers and other utility personnel have to oversee repair and rewinding. This guide provides a short-course approach to medium voltage motor repair, with sample specifications and check-off sheets to help the nonspecialist get the best service from the repair shop. The guide can also serve as a technical reference for the specialist.BackgroundThe 16 previous volumes of EPRI's Power Plant Electrical Reference Series ...

1996-09-19T23:59:59.000Z

31

Provo River Project Power Sales Rate History  

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

Provo River Project Power Sales Rate History Updated: 12/20/2013 Rate Schedule Effective Dates Energy (Mills/kWh) Capacity ($/kW-mo.) Combined (Mills/kWh) Administrative Action 4/58 - 6/64 (Summer Season) 3.000 N.A. N.A. Administrative Action 10/58 - 4/64 (Winter Season) 4.500 N.A. N.A. Administrative Action 7/64 - 9/79 (Summer Season) 5.000 N.A. N.A. Administrative Action 10/64 - 9/79 (Winter Season) 3.000 N.A. N.A. Administrative Action 10/79 - 9/82 6.000 N.A. N.A. Administrative Action 10/82 - 9/90 6.850 N.A. N.A. Administrative Action 10/90 - 9/94 8.000 N.A. N.A. Administrative Action 10/94 - Present Installments N.A. N.A. Note: The Provo River Project sells energy only. As of October 1994, customers pay all OM&R expenses and in return, receive all the energy produced by the Project.

32

Minimizing Variation in Outdoor CPV Power Ratings (Presentation)  

DOE Green Energy (OSTI)

Module data from NREL's CPV test bed is used to examine methods for calculating outdoor CPV power ratings. IEC 62670 and ASTM E2527 are used as a starting point for determining a module power rating on a monthly basis. Monthly power ratings vary by more than desired using existing methods. The presentation examines modifications to existing methods as well as spectral corrections to reduce variation in monthly module power ratings.

Muller, M.

2011-02-01T23:59:59.000Z

33

MISS-1-N Wholesale Power Rate Schedule | Department of Energy  

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

MISS-1-N Wholesale Power Rate Schedule MISS-1-N Wholesale Power Rate Schedule MISS-1-N Wholesale Power Rate Schedule Area: South Mississippi Electric Power Association System: Georgia-Alabama-South Carolina This rate schedule shall be available to the South Mississippi Electric Power Association (hereinafter called the Customer) to whom power may be wheeled pursuant to contracts between the Government and PowerSouth Energy Cooperative (hereinafter called PowerSouth). This rate schedule shall be applicable to the sale at wholesale of power and accompanying energy generated at the Allatoona, Buford, J. Strom Thurmond, Walter F. George, Hartwell, Millers Ferry, West Point, Robert F. Henry, Carters and Richard B. Russell Projects and sold under appropriate contracts between the Government and the Customer. This rate schedule does

34

ALA-1-N Wholesale Power Rate Schedule | Department of Energy  

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

ALA-1-N Wholesale Power Rate Schedule ALA-1-N Wholesale Power Rate Schedule ALA-1-N Wholesale Power Rate Schedule Area: PowerSouth Energy Cooperative System: Georgia-Alabama-South Carolina This rate schedule shall be available to the PowerSouth Energy Cooperative. This rate schedule shall be applicable to power and accompanying energy generated at the Allatoona, Buford, J. Strom Thurmond, Walter F. George, Hartwell, Millers Ferry, West Point, Robert F. Henry, Carters, and Richard B. Russell Projects and sold under contract between the Cooperative and the Government. This rate schedule does not apply to energy from pumping operations at the Carters and Richard B. Russell Projects. Document Available for Download ALA-1-N Rate Schedule More Documents & Publications MISS-1-N Wholesale Power Rate Schedule

35

NC-1-B Wholesale Power Rate Schedule | Department of Energy  

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

NC-1-B Wholesale Power Rate Schedule NC-1-B Wholesale Power Rate Schedule NC-1-B Wholesale Power Rate Schedule Area: Virginia Power/CP&L System: Kerr-Philpott This rate schedule shall be available to public bodies and cooperatives (any one of whom is hereinafter called the Customer) in Virginia and North Carolina to whom power may be transmitted pursuant to a contract between the Government and Virginia Electric and Power Company (hereinafter called the Virginia Power) and PJM Interconnection LLC (hereinafter called PJM), scheduled pursuant to a contract between the Government and Carolina Power & Light Company (hereinafter called CP&L), and billed pursuant to contracts between the Government and the Customer. This rate schedule shall be applicable to the sale at wholesale of power

36

CM-1-H Wholesale Power Rate Schedule | Department of Energy  

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

CM-1-H Wholesale Power Rate Schedule CM-1-H Wholesale Power Rate Schedule CM-1-H Wholesale Power Rate Schedule Area: MEAM, MDEA, and SMEPA System: CU This rate schedule shall be available to the South Mississippi Electric Power Association, Municipal Energy Agency of Mississippi, and Mississippi Delta Energy Agency. This rate schedule shall be applicable to electric capacity and energy available from the Dale Hollow, Center Hill, Wolf Creek, Cheatham, Old Hickory, Barkley, J. Percy Priest, and Cordell Hull Projects (all of such projects being hereinafter called collectively the "Cumberland Projects") and sold in wholesale quantities. Document Available for Download CM-1-H Rate Schedule More Documents & Publications CEK-1-H Wholesale Power Rate Schedule CSI-1-H Wholesale Power Rate Schedule

37

CM-1-H Wholesale Power Rate Schedule | Department of Energy  

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

CM-1-H Wholesale Power Rate Schedule CM-1-H Wholesale Power Rate Schedule CM-1-H Wholesale Power Rate Schedule Area: MEAM, MDEA, and SMEPA System: CU This rate schedule shall be available to the South Mississippi Electric Power Association, Municipal Energy Agency of Mississippi, and Mississippi Delta Energy Agency. This rate schedule shall be applicable to electric capacity and energy available from the Dale Hollow, Center Hill, Wolf Creek, Cheatham, Old Hickory, Barkley, J. Percy Priest, and Cordell Hull Projects (all of such projects being hereinafter called collectively the "Cumberland Projects") and sold in wholesale quantities. Document Available for Download CM-1-H Rate Schedule More Documents & Publications CEK-1-H Wholesale Power Rate Schedule CSI-1-H Wholesale Power Rate Schedule

38

Power Rate Setting and Repayment process  

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

the transmission system from four regional offices in Billings, Montana, Phoenix, Arizona, Loveland, Colorado, and Folsom, California. We market power from these offices...

39

A Power Presizing Methodology for Electric Vehicle Traction Motors Bekheira Tabbache1,2  

E-Print Network (OSTI)

= Vehicle base speed; Vcr = Vehicle cruising speed; = Grade angle; Pv = Vehicle driving power; Fw = Road for the most appropriate electric propulsion system. In this case, key features are efficiency, reliability manuscript, published in "International Review on Modelling and Simulations 6, 1 (2013) 29-32" #12;motor type

Brest, Université de

40

CC-1-I Wholesale Power Rate Schedule | Department of Energy  

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

CC-1-I Wholesale Power Rate Schedule CC-1-I Wholesale Power Rate Schedule CC-1-I Wholesale Power Rate Schedule Area: Carolina Power & Light Company, Western Division System: CU This rate schedule shall be available to public bodies and cooperatives served through the facilities of Carolina Power & Light Company, Western Division (hereinafter called the Customers). This rate schedule shall be applicable to electric capacity and energy available from the Dale Hollow, Center Hill, Wolf Creek, Cheatham, Old Hickory, Barkley, J. Percy Priest, and Cordell Hull Projects (all of such projects being hereinafter called collectively the "Cumberland Projects") and sold in wholesale quantities. Document Available for Download CC-1-I Rate Schedule More Documents & Publications CM-1-H Wholesale Power Rate Schedule

Note: This page contains sample records for the topic "motor power rating" 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

CC-1-I Wholesale Power Rate Schedule | Department of Energy  

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

CC-1-I Wholesale Power Rate Schedule CC-1-I Wholesale Power Rate Schedule CC-1-I Wholesale Power Rate Schedule Area: Carolina Power & Light Company, Western Division System: CU This rate schedule shall be available to public bodies and cooperatives served through the facilities of Carolina Power & Light Company, Western Division (hereinafter called the Customers). This rate schedule shall be applicable to electric capacity and energy available from the Dale Hollow, Center Hill, Wolf Creek, Cheatham, Old Hickory, Barkley, J. Percy Priest, and Cordell Hull Projects (all of such projects being hereinafter called collectively the "Cumberland Projects") and sold in wholesale quantities. Document Available for Download CC-1-I Rate Schedule More Documents & Publications CM-1-H Wholesale Power Rate Schedule

42

Minimizing Variation in Outdoor CPV Power Ratings: Preprint  

DOE Green Energy (OSTI)

The CPV community has agreed to have both indoor and outdoor power ratings at the module level. The indoor rating provides a repeatable measure of module performance as it leaves the factory line while the outdoor rating provides a measure of true performance under real world conditions. The challenge with an outdoor rating is that the spectrum, temperature, wind speed, etc are constantly in flux and therefore the resulting power rating varies from day to day and month to month. This work examines different methodologies for determining the outdoor power rating with the goal of minimizing variation even if data are collected under changing meteorological conditions.

Muller, M.; Marion, B.; Rodriguez, J.; Kurtz, S.

2011-07-01T23:59:59.000Z

43

AP-3-B Wholesale Power Rate Schedule | Department of Energy  

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

3-B Wholesale Power Rate Schedule 3-B Wholesale Power Rate Schedule AP-3-B Wholesale Power Rate Schedule Area: American Electric Power System: Kerr-Philpott This rate schedule shall be available to public bodies and cooperatives (any one of whom is hereinafter called the Customer) in Virginia to whom power may be scheduled pursuant to contracts between the Government, American Electric Power Service Corporation (hereinafter called the Company), PJM Interconnection LLC (hereinafter called PJM), and the Customer. This rate schedule shall be applicable to the sale at wholesale of power and accompanying energy generated at the John H. Kerr and Philpott Projects (hereinafter called the Projects) and sold under appropriate contracts between the Government and the Customer. Document Available for Download

44

AP-2-B Wholesale Power Rate Schedule | Department of Energy  

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

2-B Wholesale Power Rate Schedule 2-B Wholesale Power Rate Schedule AP-2-B Wholesale Power Rate Schedule Area: American Electric Power System: Kerr-Philpott This rate schedule shall be available to public bodies and cooperatives (any one of whom is hereinafter called the Customer) in Virginia to whom power may be transmitted pursuant to contracts between the Government, American Electric Power Service Corporation (hereinafter called the Company), the Company's Transmission Operator, currently PJM Interconnection LLC (hereinafter called PJM), and the Customer. This rate schedule shall be applicable to the sale at wholesale of power and accompanying energy generated at the John H. Kerr and Philpott Projects and sold under appropriate contracts between the Government and the Customer. Document Available for Download

45

AP-1-B Wholesale Power Rate Schedule | Department of Energy  

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

1-B Wholesale Power Rate Schedule 1-B Wholesale Power Rate Schedule AP-1-B Wholesale Power Rate Schedule Area: American Electric Power System: Kerr-Philpott This rate schedule shall be available to public bodies and cooperatives (any one of whom is hereinafter called the Customer) in Virginia to whom power may be transmitted and scheduled pursuant to contracts between the Government, American Electric Power Service Corporation (hereinafter called the Company), the Company's Transmission Operator, currently PJM Interconnection LLC (hereinafter called PJM), and the Customer. This rate schedule shall be applicable to the sale at wholesale of power and accompanying energy generated at the John H. Kerr and Philpott Projects and sold under appropriate contracts between the Government and the Customer.

46

VA-2-B Wholesale Power Rate Schedule | Department of Energy  

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

2-B Wholesale Power Rate Schedule 2-B Wholesale Power Rate Schedule VA-2-B Wholesale Power Rate Schedule Area: Virginia Power System: Kerr-Philpott This rate schedule shall be available to public bodies and cooperatives (any one of whom is hereinafter called the Customer) in Virginia and North Carolina to whom power may be transmitted pursuant to contracts between the Government, Virginia Electric and Power Company (hereinafter called the Company), the Company's Transmission Operator, currently PJM Interconnection LLC (hereinafter called PJM), and the Customer. This rate schedule shall be applicable to the sale at wholesale of power and accompanying energy generated at the John H. Kerr and Philpott Projects and sold under appropriate contracts between the Government and the Customer. Document Available for Download

47

VA-4-B Wholesale Power Rate Schedule | Department of Energy  

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

4-B Wholesale Power Rate Schedule 4-B Wholesale Power Rate Schedule VA-4-B Wholesale Power Rate Schedule Area: Virginia Power System: Kerr-Philpott This rate schedule shall be available to public bodies and cooperatives (any one of whom is hereinafter called the Customer) in Virginia and North Carolina served through the transmission facilities of Virginia Electric and Power Company (hereinafter called the Company) and PJM Interconnection LLC (hereinafter called PJM). This rate schedule shall be applicable to the sale at wholesale of power and accompanying energy generated at the John H. Kerr and Philpott Projects (hereinafter called the Projects) and sold under appropriate contracts between the Government and the Customer. Document Available for Download VA-4-B Rate Schedule More Documents & Publications

48

AP-4-B Wholesale Power Rate Schedule | Department of Energy  

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

4-B Wholesale Power Rate Schedule 4-B Wholesale Power Rate Schedule AP-4-B Wholesale Power Rate Schedule Area: American Electric Power System: Kerr-Philpott This rate schedule shall be available to public bodies and cooperatives (any one of whom is hereinafter called the Customer) in Virginia served through the facilities of American Electric Power Service Corporation (hereinafter called the Company) and PJM Interconnection LLC (hereinafter called PJM). This rate schedule shall be applicable to the sale at wholesale of power and accompanying energy generated at the John H. Kerr and Philpott Projects (hereinafter called the Projects) and sold under appropriate contracts between the Government and the Customer. Document Available for Download AP-4-B Rate Schedule More Documents & Publications

49

Design criteria linear power rate-of-rise instrumentation  

SciTech Connect

Studies of reactor safety considerations have demonstrated the need for automatic safety circuit action based on the measured rate of power increase in the power level range from 10{sup {minus}2} to 10 {sup 0} times equilibrium power level. Budget and Preliminary Engineering Studies were performed. This document provides the design criteria for detailed design of the proposed Linear Power Rate-Of-Rise Instrumentation facilities and is applicable to any of the eight IPD reactors.

Herrman, B.W.

1964-01-16T23:59:59.000Z

50

Replacement-1 Wholesale Power Rate Schedule | Department of Energy  

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

Replacement-1 Wholesale Power Rate Schedule Replacement-1 Wholesale Power Rate Schedule Replacement-1 Wholesale Power Rate Schedule Area: Replacement Energy System: Georgia-Alabama-South Carolina This rate schedule shall be available to public bodies and cooperatives (any one of whom is hereinafter called the Customer) in Georgia, Alabama, Mississippi, Florida, South Carolina, or North Carolina to whom power is provided pursuant to contracts between the Government and the Customer. This rate schedule shall be applicable to the sale at wholesale energy purchased to meet contract minimum energy and sold under appropriate contracts between the Government and the Customer. Document Available for Download Replacement-1 Rate Schedule More Documents & Publications Replacement-3 Wholesale Power Rate Schedule

51

SOCO-2-E Wholesale Power Rate Schedule | Department of Energy  

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

2-E Wholesale Power Rate Schedule 2-E Wholesale Power Rate Schedule SOCO-2-E Wholesale Power Rate Schedule Area: PowerSouth Off-System System: Georgia-Alabama-South Carolina This rate schedule shall be available to public bodies and cooperatives (any one of whom is hereinafter called the Customer) in Georgia, Alabama, Mississippi, and Florida to whom power may be transmitted pursuant to contracts between the Government and Southern Company Services, Incorporated (hereinafter called the Company) and the Customer. This rate schedule shall be applicable to the sale at wholesale of power and accompanying energy generated at the Allatoona, Buford, J. Strom Thurmond, Walter F. George, Hartwell, Millers Ferry, West Point, Robert F. Henry, Carters and Richard B. Russell Projects and sold under appropriate

52

A power system includes an engine, a motor/generator operatively connected to the engine, and a starter operatively connected to at least one of the engine and the motor/generator.  

Science Conference Proceedings (OSTI)

A power system includes an engine, a motor/generator operatively connected to the engine, and a starter operatively connected to at least one of the engine and the motor/generator.

Hoff, Brian D. (East Peoria, IL); Algrain, Marcelo C. (Peoria, IL)

2008-12-09T23:59:59.000Z

53

Replacement-2-A Wholesale Power Rate Schedule | Department of Energy  

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

2-A Wholesale Power Rate Schedule 2-A Wholesale Power Rate Schedule Replacement-2-A Wholesale Power Rate Schedule Area: Replacement Energy System: Kerr-Philpott This rate schedule shall be available to public bodies and cooperatives (any one of whom is hereinafter called the Customer) in North Carolina and Virginia to whom power is provided pursuant to contracts between the Government and the customer from the John H. Kerr and Philpott Projects (or Kerr-Philpott System). This rate schedule shall be applicable to the sale of wholesale energy purchased to meet contract minimum energy and sold under appropriate contracts between the Government and the Customer. Document Available for Download Replacement-2-A Rate Schedule More Documents & Publications Southeastern Power Administration 2010 Annual Report

54

Santee-3-E Wholesale Power Rate Schedule | Department of Energy  

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

3-E Wholesale Power Rate Schedule 3-E Wholesale Power Rate Schedule Santee-3-E Wholesale Power Rate Schedule Area: None System: Georgia-Alabama-South Carolina This rate schedule shall be available to public bodies and cooperatives (any one of whom is hereinafter call the Customer) in South Carolina to whom power may be scheduled pursuant to contracts between the Government and South Carolina Public Service Authority (hereinafter called the Authority). This rate schedule shall be applicable to the sale at wholesale of power and accompanying energy generated at the Allatoona, Buford, J. Strom Thurmond, Walter F. George, Hartwell, Millers Ferry, West Point, Robert F. Henry, Carters and Richard B. Russell Projects and sold under appropriate contracts between the Government and the Customer. This rate schedule does

55

Santee-1-E Wholesale Power Rate Schedule | Department of Energy  

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

1-E Wholesale Power Rate Schedule 1-E Wholesale Power Rate Schedule Santee-1-E Wholesale Power Rate Schedule Area: Central, Bamberg, and Georgetown System: Georgia-Alabama-South Carolina This rate schedule shall be available to public bodies and cooperatives (any one of whom is hereinafter call the Customer) in South Carolina to whom power may be wheeled and scheduled pursuant to contracts between the Government and South Carolina Public Service Authority (hereinafter called the Authority). This rate schedule shall be applicable to the sale at wholesale of power and accompanying energy generated at the Allatoona, Buford, J. Strom Thurmond, Walter F. George, Hartwell, Millers Ferry, West Point, Robert F. Henry, Carters and Richard B. Russell Projects and sold under appropriate contracts between the Government and the Customer. This rate schedule does

56

Duke-1-E Wholesale Power Rate Schedule | Department of Energy  

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

1-E Wholesale Power Rate Schedule 1-E Wholesale Power Rate Schedule Duke-1-E Wholesale Power Rate Schedule Area: Duke On-System System: Georgia-Alabama-South Carolina This rate schedule shall be available to public bodies and cooperatives (any one of whom is hereinafter called the Customer) in North Carolina and South Carolina to whom power may be transmitted and scheduled pursuant to contracts between the Government and Duke Energy Company (hereinafter called the Company) and the Customer. This rate schedule shall be applicable to the sale at wholesale of power and accompanying energy generated at the Allatoona, Buford, J. Strom Thurmond, Walter F. George, Hartwell, Millers Ferry, West Point, Robert F. Henry, Carters and Richard B. Russell Projects and sold under appropriate contracts between the Government and the Customer. This rate schedule does

57

Santee-2-E Wholesale Power Rate Schedule | Department of Energy  

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

2-E Wholesale Power Rate Schedule 2-E Wholesale Power Rate Schedule Santee-2-E Wholesale Power Rate Schedule Area: None System: Georgia-Alabama-South Carolina This rate schedule shall be available to public bodies and cooperatives (any one of whom is hereinafter call the Customer) in South Carolina to whom power may be wheeled pursuant to contracts between the Government and South Carolina Public Service Authority (hereinafter called the Authority). This rate schedule shall be applicable to the sale at wholesale of power and accompanying energy generated at the Allatoona, Buford, J. Strom Thurmond, Walter F. George, Hartwell, Millers Ferry, West Point, Robert F. Henry, Carters and Richard B. Russell Projects and sold under appropriate contracts between the Government and the Customer. This rate schedule does

58

Assessment of Retro-Fit Energy Savings Devices: Power Efficiency Corporation's Three-Phase Motor Efficiency Controller  

Science Conference Proceedings (OSTI)

This report describes and documents the energy savings and power quality results of testing performed on Power Efficiency Corporation's Motor Efficiency Controller (MEC). The MEC is designed with patented E-Save Technology to help increase motor efficiency at low load levels, which in turn will introduce energy savings for the customer. Testing includes efficiency testing from an unloaded state to 100% load and power quality testing, such as sags and sustained undervoltage. The objectives of this project...

2010-07-08T23:59:59.000Z

59

Nuclear Maintenance Applications Center: Application Guide for Motor-Operated Valves in Nuclear Power Plants - Revision 2  

Science Conference Proceedings (OSTI)

Motor-operated gate and globe valves are widely used in both safety-related and non-safety-related systems in nuclear power plants. Their proper operation is essential for reliable plant performance and can help eliminate costly downtime. This second revision of the Application Guide for Motor-Operated Valves provides the latest in methods for conducting engineering evaluations in order to confirm that motor-operated gate, globe, and butterfly valves will perform their required function and offers sugges...

2007-08-22T23:59:59.000Z

60

Constant power speed range extension of surface mounted PM motors  

DOE Patents (OSTI)

A circuit and method for controlling a rotating machine (11) in the constant horsepower range above base speed uses an inverter (15) having SCR's (T1-T6) connected in series with the primary commutation switches (Q1-Q6) to control turn off of the primary commutation switches and to protect the primary commutation switches from faults. The primary commutation switches (Q1-Q6) are controlled by a controller (14), to fire in advance or after a time when the back emf equals the applied voltage, and then to turn off after a precise dwell time, such that suitable power is developed at speeds up to at least six times base speed.

Lawler, Jack Steward (Knoxville, TN); Bailey, John Milton (Knoxville, TN)

2001-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "motor power rating" 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

System and method for motor speed estimation of an electric motor  

DOE Patents (OSTI)

A system and method for a motor management system includes a computer readable storage medium and a processing unit. The processing unit configured to determine a voltage value of a voltage input to an alternating current (AC) motor, determine a frequency value of at least one of a voltage input and a current input to the AC motor, determine a load value from the AC motor, and access a set of motor nameplate data, where the set of motor nameplate data includes a rated power, a rated speed, a rated frequency, and a rated voltage of the AC motor. The processing unit is also configured to estimate a motor speed based on the voltage value, the frequency value, the load value, and the set of nameplate data and also store the motor speed on the computer readable storage medium.

Lu, Bin (Kenosha, WI); Yan, Ting (Brookfield, WI); Luebke, Charles John (Sussex, WI); Sharma, Santosh Kumar (Viman Nagar, IN)

2012-06-19T23:59:59.000Z

62

Duke-3-E Wholesale Power Rate Schedule | Department of Energy  

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

3-E Wholesale Power Rate Schedule 3-E Wholesale Power Rate Schedule Duke-3-E Wholesale Power Rate Schedule Area: None System: Georgia-Alabama-South Carolina This rate schedule shall be available to public bodies and cooperatives (any one of whom is hereinafter called the Customer) in North Carolina and South Carolina to whom power may be scheduled pursuant to contracts between the Government and Duke Energy Company (hereinafter called the Company) and the Customer. This rate schedule shall be applicable to the sale at wholesale of power and accompanying energy generated at the Allatoona, Buford, J. Strom Thurmond, Walter F. George, Hartwell, Millers Ferry, West Point, Robert F. Henry, Carters and Richard B. Russell Projects and sold under appropriate contracts between the Government and the Customer.

63

SOCO-1-E Wholesale Power Rate Schedule | Department of Energy  

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

1-E Wholesale Power Rate Schedule 1-E Wholesale Power Rate Schedule SOCO-1-E Wholesale Power Rate Schedule Area: AMEA, Unaffil AL Munis and Coops, Hampton, East Miss., SMEPA off-System System: Georgia-Alabama-South Carolina This rate schedule shall be available to public bodies and cooperatives (any one of whom is hereinafter called the Customer) in Georgia, Alabama, Mississippi, and Florida to whom power may be transmitted and scheduled pursuant to contracts between the Government and Southern Company Services, Incorporated (hereinafter called the Company) and the Customer. This rate schedule shall be applicable to the sale at wholesale of power and accompanying energy generated at the Allatoona, Buford, J. Strom Thurmond, Walter F. George, Hartwell, Millers Ferry, West Point, Robert F.

64

SOCO-3-E Wholesale Power Rate Schedule | Department of Energy  

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

3-E Wholesale Power Rate Schedule 3-E Wholesale Power Rate Schedule SOCO-3-E Wholesale Power Rate Schedule Area: MEAG, Dalton System: Georgia-Alabama-South Carolina This rate schedule shall be available to public bodies and cooperatives (any one of whom is hereinafter called the Customer) in Georgia, Alabama, Mississippi, and Florida to whom power may be scheduled pursuant to contracts between the Government and Southern Company Services, Incorporated (hereinafter called the Company) and the Customer. This rate schedule shall be applicable to the sale at wholesale of power and accompanying energy generated at the Allatoona, Buford, J. Strom Thurmond, Walter F. George, Hartwell, Millers Ferry, West Point, Robert F. Henry, Carters and Richard B. Russell Projects (hereinafter referred to collectively as the Projects) and sold under appropriate contracts between

65

Duke-2-E Wholesale Power Rate Schedule | Department of Energy  

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

2-E Wholesale Power Rate Schedule 2-E Wholesale Power Rate Schedule Duke-2-E Wholesale Power Rate Schedule Area: Central System: Georgia-Alabama-South Carolina This rate schedule shall be available to public bodies and cooperatives (any one of whom is hereinafter called the Customer) in North Carolina and South Carolina to whom power may be transmitted pursuant to contracts between the Government and Duke Energy Company (hereinafter called the Company) and the Customer. The Customer is responsible for providing a scheduling arrangement with the Government. This rate schedule shall be applicable to the sale at wholesale of power and accompanying energy generated at the Allatoona, Buford, J. Strom Thurmond, Walter F. George, Hartwell, Millers Ferry, West Point, Robert F. Henry, Carters and Richard B. Russell Projects and sold under appropriate

66

SOCO-1-E Wholesale Power Rate Schedule | Department of Energy  

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

SOCO-1-E Wholesale Power Rate Schedule SOCO-1-E Wholesale Power Rate Schedule SOCO-1-E Wholesale Power Rate Schedule Area: AMEA, Unaffil AL Munis and Coops, Hampton, East Miss., SMEPA off-System System: Georgia-Alabama-South Carolina This rate schedule shall be available to public bodies and cooperatives (any one of whom is hereinafter called the Customer) in Georgia, Alabama, Mississippi, and Florida to whom power may be transmitted and scheduled pursuant to contracts between the Government and Southern Company Services, Incorporated (hereinafter called the Company) and the Customer. This rate schedule shall be applicable to the sale at wholesale of power and accompanying energy generated at the Allatoona, Buford, J. Strom Thurmond, Walter F. George, Hartwell, Millers Ferry, West Point, Robert F.

67

Santee-4-E Wholesale Power Rate Schedule | Department of Energy  

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

4-E Wholesale Power Rate Schedule 4-E Wholesale Power Rate Schedule Santee-4-E Wholesale Power Rate Schedule Area: Santee-Cooper System: Georgia-Alabama-South Carolina This rate schedule shall be available to public bodies and cooperatives (any one of whom is hereinafter call the Customer) in South Carolina served through the transmission facilities of South Carolina Public Service Authority (hereinafter called the Authority). This rate schedule shall be applicable to the sale at wholesale of power and accompanying energy generated at the Allatoona, Buford, J. Strom Thurmond, Walter F. George, Hartwell, Millers Ferry, West Point, Robert F. Henry, Carters and Richard B. Russell Projects and sold under appropriate contracts between the Government and the Customer. This rate schedule does not apply to energy from pumping operations at the Carters and Richard B.

68

Duke-4-E Wholesale Power Rate Schedule | Department of Energy  

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

4-E Wholesale Power Rate Schedule 4-E Wholesale Power Rate Schedule Duke-4-E Wholesale Power Rate Schedule Area: Duke Self-Schedulers System: Georgia-Alabama-South Carolina This rate schedule shall be available to public bodies and cooperatives (any one of whom is hereinafter called the Customer) in North Carolina and South Carolina served through the transmission facilities of Duke Energy Company (hereinafter called the Company) and the Customer. This rate schedule shall be applicable to the sale at wholesale of power and accompanying energy generated at the Allatoona, Buford, J. Strom Thurmond, Walter F. George, Hartwell, Millers Ferry, West Point, Robert F. Henry, Carters and Richard B. Russell Projects and sold under appropriate contracts between the Government and the Customer. This rate schedule does

69

Particle swarm optimisation for power quality improvement of a 12-pulse rectifier-chopper fed LCI-synchronous motor drive  

Science Conference Proceedings (OSTI)

This paper investigates the optimised passive filter combination for power quality improvement of a 12-pulse rectifier-chopper fed load commutated inverter LCI based synchronous motor SM drive. The search of optimised component values of passive filter ...

Sanjeev Singh; Bhim Singh

2012-03-01T23:59:59.000Z

70

Pump-2 Wholesale Power Rate Schedule | Department of Energy  

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

2 Wholesale Power Rate Schedule 2 Wholesale Power Rate Schedule Pump-2 Wholesale Power Rate Schedule Area: Carters & Russell Pumping-Self Schedulers System: Georgia-Alabama-South Carolina This rate schedule shall be available to public bodies and cooperatives who provide their own scheduling arrangement and elect to allow Southeastern to use a portion of their allocation for pumping (any one of whom is hereinafter called the Customer) in Georgia, Alabama, Mississippi, Florida, South Carolina, or North Carolina to whom power is provided pursuant to contracts between the Government and the Customer. This rate schedule shall be applicable to the sale at wholesale energy generated from pumping operations at the Carters and Richard B. Russell Projects and sold under appropriate contracts between the Government and

71

SOCO-4-E Wholesale Power Rate Schedule | Department of Energy  

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

4-E Wholesale Power Rate Schedule 4-E Wholesale Power Rate Schedule SOCO-4-E Wholesale Power Rate Schedule Area: OPC System: Georgia-Alabama-South Carolina This rate schedule shall be available to public bodies and cooperatives (any one of whom is hereinafter called the Customer) in Georgia, Alabama, Mississippi, and Florida served through the transmission facilities of Southern Company Services, Inc. (hereinafter called the Company) or the Georgia Integrated Transmission System. This rate schedule shall be applicable to the sale at wholesale of power and accompanying energy generated at the Allatoona, Buford, J. Strom Thurmond, Walter F. George, Hartwell, Millers Ferry, West Point, Robert F. Henry, Carters and Richard B. Russell Projects (hereinafter referred to collectively as the Projects) and sold under appropriate contracts between

72

CM-1-H Wholesale Power Rate Schedule | Department of Energy  

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

CM-1-H Wholesale Power Rate Schedule CM-1-H Wholesale Power Rate Schedule CM-1-H Wholesale Power Rate Schedule October 1, 2011 - 3:22pm Addthis Availability: This rate schedule shall be available to the South Mississippi Electric Power Association, Municipal Energy Agency of Mississippi, and Mississippi Delta Energy Agency (hereinafter called the Customers). Applicability: This rate schedule shall be applicable to electric capacity and energy available from the Dale Hollow, Center Hill, Wolf Creek, Cheatham, Old Hickory, Barkley, J. Percy Priest, and Cordell Hull Projects (all of such projects being hereinafter called collectively the "Cumberland Projects") and sold in wholesale quantities. Character of Service: The electric capacity and energy supplied hereunder will be three phase

73

Minimizing Variation in Outdoor CPV Power Ratings (Presentation)  

SciTech Connect

Presented at the 7th International Conference on Concentrating Photovoltaic Systems (CPV-7), 4-6 April 2011, Las Vegas, Nevada. The CPV community has agreed to have both indoor and outdoor power ratings at the module level. The indoor rating provides a repeatable measure of module performance as it leaves the factory line while the outdoor rating provides a measure of true performance under real world conditions. The challenge with an outdoor rating is that the spectrum, temperature, wind speed, etc are constantly in flux and therefore the resulting power rating varies from day to day and month to month. This work examines different methodologies for determining the outdoor power rating with the goal of minimizing variation even if data are collected under changing meteorological conditions.

Muller, M.

2011-04-01T23:59:59.000Z

74

CTVI-1-A Wholesale Power Rate Schedule | Department of Energy  

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

CTVI-1-A Wholesale Power Rate Schedule CTVI-1-A Wholesale Power Rate Schedule CTVI-1-A Wholesale Power Rate Schedule Area: Former customers of TVA System: Cumberland This rate schedule shall be available to customers (hereinafter called the Customer) who are or were formerly in the Tennessee Valley Authority (hereinafter called TVA) service area. This rate schedule shall be applicable to electric capacity and energy generated at the Dale Hollow, Center Hill, Wolf Creek, Old Hickory, Cheatham, Barkley, J. Percy Priest, and Cordell Hull Projects (all of such projects being hereafter called collectively the "Cumberland Projects") and the Laurel Project sold under agreement between the Department of Energy and the Customer. Document Available for Download CTVI-1-A Rate Schedule More Documents & Publications

75

Amistad and Falcon Projects Power Sales Rate History  

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

Power Sales Rate History Updated: 1022009 Rate Schedule Effective Dates Energy (MillskWh) Capacity (kW-mo.) Combined (MillskWh) N.A. 1272 - 1277 3.000 N.A. N.A. N.A. 178...

76

Optimal Design of Motor and Gear for Drives with High Acceleration and Load Torque  

E-Print Network (OSTI)

Optimal Design of Motor and Gear for Drives with High Acceleration and Load Torque H. Grotstollen-acceleration product are transmitted unchanged by an ideal gear. At a first step those motors can be selected which offer sufficient rated power and power rate. When designing gears for each of these motors two ranges

Noé, Reinhold

77

Fundamentals of Electric Power Conversion: Volume 1: Operating Characteristics and Testing of AC Induction Motors  

Science Conference Proceedings (OSTI)

The prominence of ac motor-driven systems in the energy consumption field has made them the target of numerous efficiency improvements. This report describes how induction motors work, explains their characteristics, and discusses induction motor testing.

1999-11-18T23:59:59.000Z

78

Optimum Power and Rate Allocation for Coded V-BLAST  

E-Print Network (OSTI)

An analytical framework for minimizing the outage probability of a coded spatial multiplexing system while keeping the rate close to the capacity is developed. Based on this framework, specific strategies of optimum power and rate allocation for the coded V-BLAST architecture are obtained and its performance is analyzed. A fractional waterfilling algorithm, which is shown to optimize both the capacity and the outage probability of the coded V-BLAST, is proposed. Compact, closed-form expressions for the optimum allocation of the average power are given. The uniform allocation of average power is shown to be near optimum at moderate to high SNR for the coded V-BLAST with the average rate allocation (when per-stream rates are set to match the per-stream capacity). The results reported also apply to multiuser detection and channel equalization relying on successive interference cancelation.

Kostina, Victoria

2009-01-01T23:59:59.000Z

79

Extending the Constant Power Speed Range of the Brushless DC Motor through Dual Mode Inverter Control -- Part II: Laboratory Proof-of-Principle  

DOE Green Energy (OSTI)

Previous theoretical work has shown that when all loss mechanisms are neglected the constant power speed range (CPSR) of a brushless dc motor (BDCM) is infinite when the motor is driven by the dual-mode inverter control (DMIC) [1,2]. In a physical drive, losses, particularly speed-sensitive losses, will limit the CPSR to a finite value. In this paper we report the results of laboratory testing of a low-inductance, 7.5-hp BDCM driven by the DMIC. The speed rating of the test motor rotor limited the upper speed of the testing, and the results show that the CPSR of the test machine is greater than 6:1 when driven by the DMIC. Current wave shape, peak, and rms values remained controlled and within rating over the entire speed range. The laboratory measurements allowed the speed-sensitive losses to be quantified and incorporated into computer simulation models, which then accurately reproduce the results of lab testing. The simulator shows that the limiting CPSR of the test motor is 8:1. These results confirm that the DMIC is capable of driving low-inductance BDCMs over the wide CPSR that would be required in electric vehicle applications.

Lawler, J.S.

2001-10-29T23:59:59.000Z

80

Guide for the Specification of Replacement and Spare AC Squirrel-Cage Induction Motors Having Voltage Ratings Up to 600 V  

Science Conference Proceedings (OSTI)

This report was developed by the Electric Power Research Institute (EPRI) Large Electric Motor Users Group (LEMUG) Applications Working Group (AWG), which included motor engineers, consultants, and vendors. This report and the specification it contains provide a solid framework for procuring new or replacement low-voltage (up to 600 Vac) National Electrical Manufacturers Association (NEMA) T-frame squirrel-cage induction motors. This report draws from other industry sources, including NEMA MG-1 and ...

2013-05-31T23:59:59.000Z

Note: This page contains sample records for the topic "motor power rating" 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

Power applications of high-temperature superconductivity: Variable speed motors, current switches, and energy storage for end use  

DOE Green Energy (OSTI)

The objective of this project is to conduct joint research and development activities related to certain electric power applications of high-temperature superconductivity (HTS). The new superconductors may allow development of an energy-efficient switch to control current to variable speed motors, superconducting magnetic energy storage (SMES) systems, and other power conversion equipment. Motor types that were considered include induction, permanent magnet, and superconducting ac motors. Because it is impractical to experimentally alter certain key design elements in radial-gap motors, experiments were conducted on an axial field superconducting motor prototype using 4 NbTi magnets. Superconducting magnetic energy storage technology with 0.25--5 kWh stored energy was studied as a viable solution to short duration voltage sag problems on the customer side of the electric meter. The technical performance characteristics of the device wee assembled, along with competing technologies such as active power line conditioners with storage, battery-based uninterruptible power supplies, and supercapacitors, and the market potential for SMES was defined. Four reports were prepared summarizing the results of the project.

Hawsey, R.A. [Oak Ridge National Lab., TN (United States); Banerjee, B.B.; Grant, P.M. [Electric Power Research Inst., Palo Alto, CA (United States)

1996-08-01T23:59:59.000Z

82

Coal Transportation Rates to the Electric Power Sector  

Gasoline and Diesel Fuel Update (EIA)

Coal reports Coal reports Coal Transportation Rates to the Electric Power Sector With Data through 2010 | Release Date: November 16, 2012 | Next Release Date: December 2013 | Correction Previous editions Year: 2011 2004 Go Figure 1. Deliveries from major coal basins to electric power plants by rail, 2010 Background In this latest release of Coal Transportation Rates to the Electric Power Sector, the U.S. Energy Information Administration (EIA) significantly expands upon prior versions of this report with the incorporation of new EIA survey data. Figure 1. Percent of total U.S. rail shipments represented in data figure data Previously, EIA relied solely on data from the U.S. Surface Transportation Board (STB), specifically their confidential Carload Waybill Sample. While valuable, due to the statistical nature of the Waybill data,

83

Apparatus and method for servicing an elongated suspended pump motor in an electric power plant with limited access  

DOE Patents (OSTI)

Elongated coolant pumps suspended under steam generators within containment in a power plant with limited access space, are removed and replaced by an elongated maintenance cart with an elongated opening along one side in which the motor is received. Rollers support the cart for conveying the elongated motor in an upright position out from under the steam generator and onto an elevator. The elevator is lowered to transfer support of the cart and motor through trunnions to saddles straddling the elevator for rotation of the cart to a generally horizontal position. The elevator then raises the horizontally disposed cart carrying the motor to a higher floor where it is rolled off the elevator and out through the auxiliary equipment hatch. 14 figures.

Chavez, R.V.; Ekeroth, D.E.; Johnson, F.T.; Matusz, J.M.

1994-04-26T23:59:59.000Z

84

Apparatus and method for servicing an elongated suspended pump motor in an electric power plant with limited access  

DOE Patents (OSTI)

Elongated coolant pumps suspended under steam generators within containment in a power plant with limited access space, are removed and replaced by an elongated maintenance cart with an elongated opening along one side in which the motor is received. Rollers support the cart for conveying the elongated motor in an upright position out from under the steam generator and onto an elevator. The elevator is lowered to transfer support of the cart and motor through trunnions to saddles straddling the elevator for rotation of the cart to a generally horizontal position. The elevator then raises the horizontally disposed cart carrying the motor to a higher floor where it is rolled off the elevator and out through the auxiliary equipment hatch.

Chavez, Rossemary V. (Monroeville, PA); Ekeroth, Douglas E. (Delmont, PA); Johnson, F. Thomas (Baldwin Boro, PA); Matusz, John M. (Plum Boro both of Allegheny County, PA)

1994-01-01T23:59:59.000Z

85

Wholesale Power and Transmission Rate Projections 1993--2014 and Historical Wholesale Power Rates 1939--1992.  

SciTech Connect

This document provides a range of high, medium, and low case long-term projections of Bonneville Power Administration`s (BPA) wholesale power rates and a medium case long-term projection of BPA`s wheeling rates. These projections are produced annually by BPA. BPA uses these projections in long-term marketing, resource, transmission, and financial planning assessments. BPA`s projections also are used by public utility commissions, utilities, and others for a variety of planning purposes. The analysis used for these rate projections assumes that current rate making methodologies continue into the future and are further based on certain assumptions about regional loads, extra-regional markets, the costs of resources, BPA`s financial requirements, and the capability of the region`s power plants. While these projections are intended to address the overall uncertainty in rate levels, BPA realizes that the future will not reflect any specific set of assumptions. The rate projections in this document have been prepared prior to the Draft 1993 BPA Marketing Plan, the implementation of which is almost certain to push BPA away from any set of assumptions in this document. Therefore, this document can be thought of as representing the ``old`` BPA with its products and policies. It can be viewed as a starting point or reference point to measure the impact of the ``new`` BPA with its Marketing Plan, and the broader undertaking referred to as the Competitiveness Project.

US Bonneville Power Administration

1993-11-01T23:59:59.000Z

86

Modeling of Electronically Commutated Motor Controlled Fan-powered Terminal Units  

E-Print Network (OSTI)

Empirical models of airflow and power consumption were developed for series and parallel variable air volume fan powered terminal units (FPTUs). An experimental setup and test procedure were developed to test the terminal units over typical operating ranges. The terminal units in this study used either an 8 in. (20.32 cm) or a 12 in. (30.48 cm) primary air inlet. All terminal units utilized electronically commutated motor (ECM) controllers. Data collected were compared against previous data collected for silicon controlled rectifier (SCR) units. Generalized models were developed for both series and parallel units, and compared against models developed for SCR units. In addition to the performance modeling, power factor and power quality data were also collected for each terminal unit. The power quality analysis included recording and analyzing harmonic distortion for current, voltage, and power up to the 25th harmonic. The total harmonic distortion (THD) was also recorded and presented. For the series terminal units, models were developed for fan airflow, fan power, and primary airflow. The models for fan airflow all had R2 values above 0.987. The models for fan power all had R2 values above 0.968. The models for primary airflow all had R2 values above 0.895. For the parallel terminal units, models were developed for leakage, fan airflow, fan power, and primary airflow. All of the leakage models had R2 values above 0.826. All of the fan airflow models had R2 values above 0.955. All of the fan power models had R2 values above 0.922. All of the primary airflow models had R2 values above 0.872. The real power THD was below 1.5 percent for both series and parallel FPTUs. The current THD ranged from 84 percent to 172 percent for series FPTUs and from 83 percent to 183 percent for parallel FPTUs. The voltage THD was below 1.4 percent for both series and parallel FPTUs. The performance models developed will help improve the accuracy of building energy simulation programs for heating, ventilation, and air conditioning (HVAC) systems utilizing ECM controlled FPTUs. Increasing the accuracy of these simulations will allow HVAC system designers to better optimize their designs for specific building types in a wide variety of climates.

Edmondson, Jacob Lee

2009-12-01T23:59:59.000Z

87

Aging Management Guideline for commercial nuclear power plants: Motor control centers; Final report  

SciTech Connect

This Aging Management Guideline (AMG) provides recommended methods for effective detection and mitigation of age-related degradation mechanisms in Boiling Water Reactor (BWR) and Pressurized Water Reactor (PWR) commercial nuclear power plant motor control centers important to license renewal. The intent of this AMG is to assist plant maintenance and operations personnel in maximizing the safe, useful life of these components. It also supports the documentation of effective aging management programs required under the License Renewal Rule 10 CFR Part 54. This AMG is presented in a manner that allows personnel responsible for performance analysis and maintenance to compare their plant-specific aging mechanisms (expected or already experienced) and aging management program activities to the more generic results and recommendations presented herein.

Toman, G.; Gazdzinski, R.; O`Hearn, E. [Ogden Environmental and Energy Services Co., Inc., Blue Bell, PA (United States)

1994-02-01T23:59:59.000Z

88

Engineering evaluation of the General Motors (GM) diesel rating and capabilities  

SciTech Connect

K-Reactor`s number one GM diesel (GM-lK) suffered recurrent, premature piston pin bushing failures between July 1990 and January 1991. These failures raised a concern that the engine`s original design capabilities were being exceeded. Were we asking old engines to do too much by powering 1200 kw (continuous) rated electrical generators? Was excessive wear of the piston pin bushings a result of having exceeded the engine`s capabilities (overload), or were the recent failures a direct result of poor quality, poor design, or defective replacement parts? Considering the engine`s overall performance for the past 30 years, during which an engine failure of this nature had never occurred, and the fact that 1200 kw was approximately 50% of the engine`s original tested capability, Reactor Engineering did not consider it likely that an overloaded engine caused bushing failures. What seemed more plausible was that the engine`s failure to perform was caused by deficiencies in, or poor quality of, replacement parts.The following report documents: (1) the results of K-Reactor EDG failure analysis; (2) correlation of P- and C-Reactor GM diesel teardowns; (3) the engine rebuild to blueprint specification; (4) how the engine was determined ready for test; (5) testing parameters that were developed; (6) a summary of test results and test insights; (7) how WSRC determined engine operation was acceptable; (8) independent review of 1200 kw operational data; (9) approval of the engines` 12OOkw continuous rating.

Gross, R.E.

1992-04-01T23:59:59.000Z

89

Guidelines for the Repair of Nuclear Power Plant Safety-Related Motors (NCIG-12)  

Science Conference Proceedings (OSTI)

These guidelines, the twelfth in a series cosponsored by NCIG, provide utilities with information on the repair of all classes of safety-related electric motors. Use of this information will permit capable repair shops to repair motors under the extension of utility quality assurance programs or by dedication of a commercially repaired motor.

1990-04-24T23:59:59.000Z

90

Engineering evaluation of the General Motors (GM) diesel rating and capabilities  

SciTech Connect

K-Reactor's number one GM diesel (GM-lK) suffered recurrent, premature piston pin bushing failures between July 1990 and January 1991. These failures raised a concern that the engine's original design capabilities were being exceeded. Were we asking old engines to do too much by powering 1200 kw (continuous) rated electrical generators Was excessive wear of the piston pin bushings a result of having exceeded the engine's capabilities (overload), or were the recent failures a direct result of poor quality, poor design, or defective replacement parts Considering the engine's overall performance for the past 30 years, during which an engine failure of this nature had never occurred, and the fact that 1200 kw was approximately 50% of the engine's original tested capability, Reactor Engineering did not consider it likely that an overloaded engine caused bushing failures. What seemed more plausible was that the engine's failure to perform was caused by deficiencies in, or poor quality of, replacement parts.The following report documents: (1) the results of K-Reactor EDG failure analysis; (2) correlation of P- and C-Reactor GM diesel teardowns; (3) the engine rebuild to blueprint specification; (4) how the engine was determined ready for test; (5) testing parameters that were developed; (6) a summary of test results and test insights; (7) how WSRC determined engine operation was acceptable; (8) independent review of 1200 kw operational data; (9) approval of the engines' 12OOkw continuous rating.

Gross, R.E.

1992-04-01T23:59:59.000Z

91

Rail Coal Transportation Rates to the Electric Power Sector  

Gasoline and Diesel Fuel Update (EIA)

Analysis & Projections Analysis & Projections ‹ See all Coal Reports Rail Coal Transportation Rates to the Electric Power Sector Release Date: June 16, 2011 | Next Release Date: July 2012 | full report Introduction The U.S. Energy Information Administration (EIA) is releasing a series of estimated data based on the confidential, carload waybill sample obtained from the U.S. Surface Transportation Board (Carload Waybill Sample). These estimated data represent a continuation of EIA's data and analysis products related to coal rail transportation. These estimated data also address a need expressed by EIA's customers for more detailed coal transportation rate data. Having accurate coal rail transportation rate data is important to understanding the price of electricity for two main reasons. First,

92

In-State Contract Vehicle Rental Rates (State Motor Pool Rental Contract for Business Travel)  

E-Print Network (OSTI)

with a full tank of gas. · Receipts are required to be reimbursed. · Students shall not be authorized to drive/Damage Waiver & 1M Liability Coverage Insurance. · Weekly rates are calculated at 5.5 times the Daily rate. · Monthly rates will be calculated at 20 times the Daily rate. · ½ day rates of 4 hours or less

Harms, Kyle E.

93

In-State Contract Vehicle Rental Rates (State Motor Pool Rental Contract for Business Travel)  

E-Print Network (OSTI)

with a full tank of gas. · Itemized receipts are required to be reimbursed. · Non-employee students/Damage Waiver & 1M Liability Coverage Insurance. · Weekly rates are calculated at 5.5 times the Daily rate. · Monthly rates will be calculated at 20 times the Daily rate. · ½ day rates of 4 hours or less

Harms, Kyle E.

94

In-State Contract Vehicle Rental Rates (State Motor Pool Rental Contract for Business Travel)  

E-Print Network (OSTI)

with a full tank of gas. · Itemized receipts are required to be reimbursed. · Non-employee students Insurance. · Weekly rates are calculated at 5.5 times the Daily rate. · Monthly rates will be calculated

Harms, Kyle E.

95

Colorado River Storage Project Power Sales Rate History  

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

Colorado River Storage Project Power Sales Rate History Updated: 10/2/2009 Rate Schedule Effective Dates Energy (Mills/kWh) Capacity ($/kW-mo.) Combined (Mills/kWh) R4-F1 3/62 - 4/74 3.000 $1.275 6.000 UC-F1 4/74 - 6/77 3.000 $1.320 6.110 UC-F2 (Firm Only) 6/77 - 1/81 3.400 $1.340 6.550 UC-FP2 (Peaking Only) 6/77 - 1/81 N.A. $1.340 N.A. SP-F1 (Firm Only) 1/81 - 6/83 4.000 $1.655 7.890 SP-FP1 (Peaking Only) 1/81 - 6/83 N.A. $1.655 N.A. SP-F2 (Firm Only) 6/83 - 9/87 5.000 $2.090 9.920 SP-FP2 (Peaking Only) 6/83 - 9/87 N.A. $2.090 N.A. None 10/87 - Present N.A. N.A. N.A. Note: Beginning October 1, 1987, all Colorado River Storage Project power became a Salt Lake City Area Integrated Projects resource. As of that date, direct sales to power customers ceased.

96

Design of low-power permanent-magnet synchronous motor for use in high-density heat pump  

E-Print Network (OSTI)

An analytical model for the functionality of a permanent-magnet synchronous motor is developed. Taking as input a specific geometry, it predicts steady-state losses of a design at an average rate of 0.85 seconds per analysis, ...

Jenicek, David P. (David Pierre)

2011-01-01T23:59:59.000Z

97

PowerChoice Residential Customer Response to TOU Rates  

Science Conference Proceedings (OSTI)

Research Into Action, Inc. and the Sacramento Municipal Utility District (SMUD) worked together to conduct research on the behaviors and energy use patterns of SMUD residential customers who voluntarily signed on to a Time-of-Use rate pilot launched under the PowerChoice label. The project was designed to consider the how and why of residential customers ability and willingness to engage in demand reduction behaviors, and to link social and behavioral factors to observed changes in demand. The research drew on a combination of load interval data and three successive surveys of participating households. Two experimental treatments were applied to test the effects of increased information on households ability to respond to the Time-of-Use rates. Survey results indicated that participants understood the purpose of the Time-of-Use rate and undertook substantial appropriate actions to shift load and conserve. Statistical tests revealed minor initial price effects and more marked, but still modest, adjustments to seasonal rate changes. Tests of the two information interventions indicated that neither made much difference to consumption patterns. Despite the lackluster statistical evidence for load shifting, the analysis points to key issues for critical analysis and development of residential Time-of-Use rates, especially pertinent as California sets the stage for demand response in more California residences.

Peters, Jane S.; Moezzi, Mithra; Lutzenhiser, Susan; Woods, James; Dethman, Linda; Kunkle, Rick

2009-10-01T23:59:59.000Z

98

Power-Factor Calculation under Consideration of Cross Saturation of the Interior Permanent Magnet Synchronous Motor with Brushless Field Excitation  

SciTech Connect

This paper introduces a new method for calculating the power factor with consideration of the cross saturation between the direct-axis (d-axis) and the quadrature-axis (q-axis) of an interior permanent magnet synchronous motor (IPMSM). The conventional two-axis IPMSM model is modified to include the cross-saturation effect by adding the cross-coupled inductance terms. This paper also contains the new method of calculating the cross-coupled inductance values as well as self-inductance values in d- and q-axes. The analyzed motor is a high-speed brushless field excitation machine that offers high torque per ampere per core length at low speed and weakened flux at high speed, which was developed for the traction motor of a hybrid electric vehicle.

Lee, Seong T [ORNL; Burress, Timothy A [ORNL; Hsu, John S [ORNL

2009-01-01T23:59:59.000Z

99

In-State Contract Vehicle Rental Rates (State Motor Pool Rental Contract for Business Travel)  

E-Print Network (OSTI)

# · Rates require that the vehicle be returned with a full tank of gas. · Unlimited mileage on all rentals Insurance. Large Truck 51 281 1,020 · Weekly rates are calculated at 5.5 times the Daily rate. Cargo Van/Truck 51 281 1,020 · Monthly rates will be calculated at 20 times the Daily rate. Van - 15 Passenger 90 495

Harms, Kyle E.

100

2007 Wholesale Power Rate Case Initial Proposal : Direct Testimony  

SciTech Connect

The purpose of this testimony is to provide the context and background to the financial and risk policy objectives for BPA's WP-07 Initial Proposal. The testimony contains eight sections. The first is this introduction. Section 2 provides background regarding BPA's Subscription Strategy and the Subscription contracts to which the WP-07 rates will apply. Section 3 describes the financial policy objectives considered when establishing the WP-07 rates. Section 4 describes BPA's risk profile, the risk mitigation tools used in prior rate periods, those proposed here, and additional tools under consideration for the FY 2007-2009 rate period. Section 5 describes financial policy directives and decisions that have shaped the WP-07 Initial Proposal. Section 6 describes the uncertainties of the current litigation regarding the National Marine Fisheries Service (NMFS) Federal Columbia River Power System (FCRPS) Biological Opinion and how it is addressed in this proposal. Section 7 briefly discusses the risk mitigation package in the WP-07 Initial Proposal. Finally, Section 8 describes some liquidity tools that may be incorporated into final studies if circumstances allow.

United States. Bonneville Power Administration.

2005-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "motor power rating" 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

DEPARTMENT OF ENERGY Western Area Power Administration Provo River Project Rate Order No. WAPA-149  

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

DEPARTMENT OF ENERGY Western Area Power Administration Provo River Project Rate Order No. WAPA-149 AGENCY: Western Area Power Administration, DOE. ACTION: Notice of Rate Order Concerning a Power Rate Formula. SUMMARY: The Deputy Secretary of Energy confinned and approved Rate Order No. W AP A-149, placing a power rate fOlIDula for the Provo River Project (PRP) of Western Area Power Administration (Western) into effect on an interim basis. The provisional power rate formula will remain in effect on an interim basis until the Federal Energy Regulatory Commission (FERC) COnfilIDs, approves, and places it into effect on a final basis, or until the power rate formula is replaced by another power rate fOlIDula. DATES: The provisional power rate fonnula will be placed into effect on an interim basis on

102

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 dont 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 levelsincreasing the overall efficiency of both the transistor and the entire motor drive.

None

2010-09-01T23:59:59.000Z

103

Control signal transmission through power supply cables of a 3-phase PWM motor  

E-Print Network (OSTI)

Modem process control systems often employ accurate position or speed controlled PWM motors, which require feedback data for the drive control loop. Current methods require an independently shielded cable for feedback data ...

Mendez, Jose A. (Jose Antonio Mendez Alcazar)

2006-01-01T23:59:59.000Z

104

Plant Support Engineering: Guidance for the Replacement of Large Electric Motors at Nuclear Power Plants  

Science Conference Proceedings (OSTI)

The purpose of this report is to prepare a primary source of guidance for a project manager who is coordinating a team of plant personnel tasked with replacing a large electric motor. The report provides a generic process that describes interfaces and key steps necessary to ensure that the motor is evaluated and replaced in the most cost-effective and efficient means possible. The report also provides guidance regarding the typical composition of the project team and demonstrates how performance of their...

2010-03-15T23:59:59.000Z

105

Salt Lake City Area Integrated Projects Power Sales Rate History  

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

Salt Lake City Area Integrated Projects Power Sales Rate History Updated: 9/11/2013 Rate Schedule Effective Dates Energy (Mills/kWh) Capacity ($/kW-mo.) Combined (Mills/kWh) 1/ Composite (Mills/kWh) 2/ SLIP-F1 10/87-9/90 5.000 $2.09 9.92 - SLIP-F2 10/90-11/91 7.250 $3.08 14.5 - SLIP-F3 12/91-9/92 8.100 $3.44 16.2 - SLIP-F4 10/92-9/94 8.400 $3.54 16.72 - SLIP-F5 12/94-4/98 8.900 $3.83 - 20.17 SLIP-F6 4/98-9/02 8.100 $3.44 - 17.57 SLIP-F7 10/02-9/06 9.500 $4.04 - 20.72 SLIP-F8 10/06-9/08 10.430 $4.43 - 25.28 SLIP-F9 (First Step) 10/08-9/09 11.060 $4.70 - 26.80 SLIP-F9 (Second Step) 10/09-Present 12.190 $5.18 - 29.62 The Salt Lake City Area Integrated Projects is a combination of resources from the Collbran, CRSP, and Rio Grande Projects. 1/ Combined rates are calculated with a load factor which is assumed to be constant over a given period. In the SLCA/IP, the load factor is considered to be 58.2 percent.

106

Extending the Constant Power Speed Range of the Brushless DC Motor through Dual Mode Inverter Control -- Part I: Theory and Simulation  

SciTech Connect

An inverter topology and control scheme has been developed that can drive low-inductance, surface-mounted permanent magnet motors over the wide constant power speed range required in electric vehicle applications. This new controller is called the dual-mode inverter control (DMIC) [1]. The DMIC can drive either the Permanent Magnet Synchronous Machine (PMSM) with sinusoidal back emf, or the brushless dc machine (BDCM) with trapezoidal emf in the motoring and regenerative braking modes. In this paper we concentrate on the BDCM under high-speed motoring conditions. Simulation results show that if all motor and inverter loss mechanisms are neglected, the constant power speed range of the DMIC is infinite. The simulation results are supported by closed form expressions for peak and rms motor current and average power derived from analytical solution to the differential equations governing the DMIC/BDCM drive for the lossless case. The analytical solution shows that the range of motor inductance that can be accommodated by the DMIC is more than an order of magnitude such that the DMIC is compatible with both low- and high-inductance BDCMs. Finally, method is given for integrating the classical hysteresis band current control, used for motor control below base speed, with the phase advance of DMIC that is applied above base speed. The power versus speed performance of the DMIC is then simulated across the entire speed range.

Lawler, J.S.

2001-10-29T23:59:59.000Z

107

U.S. total motor gasoline exports down slightly from last year but ...  

U.S. Energy Information Administration (EIA)

Greenhouse gas data, voluntary report- ing, electric power plant emissions. ... Total motor gasoline = finished motor gasoline + motor gasoline blending components.

108

RATES  

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

Marketing > RATES Marketing > RATES RATES Current Rates Past Rates 2006 2007 2008 2009 2010 2011 2012 Rates Schedules Power CV-F13 CPP-2 Transmissions CV-T3 CV-NWT5 PACI-T3 COTP-T3 CV-TPT7 CV-UUP1 Ancillary CV-RFS4 CV-SPR4 CV-SUR4 CV-EID4 CV-GID1 Future and Other Rates SNR Variable Resource Scheduling Charge FY12-FY16 (October 1, 2012) SNR Rates Process Calendar (PDF - 171K) Procedures Informal Process Transmission Action Items List (PDF - 144K) Power Action Item List updated on 4-27-10 (PDF - 155K) Power Action Item List (Quick links to relevant documents) Formal Process Rates Brochure (01/11/2011) (PDF - 900K) Appendix A - Federal Register Notice (01/03/2011) (PDF - 8000K) Appendix B - Central Valley Project Power Repayment Study (PDF - 22,322K) Appendix C - Development of the CVP Cost of Service Study (PDF - 2038K)

109

RATES  

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

Planning & Projects Planning & Projects Power Marketing Rates You are here: SN Home page > Power Marketing > RATES Rates and Repayment Services Rates Current Rates Power Revenue Requirement Worksheet (FY 2014) (Oct 2013 - Sep 2014) (PDF - 30K) PRR Notification Letter (Sep 27, 2013) (PDF - 959K) FY 2012 FP% True-Up Calculations(PDF - 387K) Variable Resource Scheduling Charge FY12-FY16 (October 1, 2012) PRR Forecast FY14-FY17 (May 23, 2013) (PDF - 100K) Forecasted Transmission Rates (May 2013) (PDF - 164K) Past Rates 2013 2012 2011 2010 2009 Historical CVP Transmission Rates (April 2013) (PDF - 287K) Rate Schedules Power - CV-F13 - CPP-2 Transmission - CV-T3 - CV-NWT5 - PACI-T3 - COTP-T3 - CV-TPT7 - CV-UUP1 Ancillary - CV-RFS4 - CV-SPR4 - CV-SUR4 - CV-EID4 - CV-GID1 Federal Register Notices - CVP, COTP and PACI

110

RATES  

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

RATES RATES Rates Document Library SNR Rates Process Calendar (PDF - 171K) Procedures Informal Process Transmission Action Items List (PDF - 144K) Power Action Item List updated on 4-27-10 (PDF - 155K) Power Action Item List (Quick links to relevant documents) Formal Process Rates Brochure (01/11/2011) (PDF - 900K) Appendix A - Federal Register Notice (01/03/2011) (PDF - 8000K) Appendix B - Central Valley Project Power Repayment Study (PDF - 22,322K) Appendix C - Development of the CVP Cost of Service Study (PDF - 2038K) Appendix D - Western Transmission System Facilities Map (PDF - 274K) Appendix E - Estimated FY12 FP and BR Customer (PDF - 1144K) Appendix F - Forecasted Replacements and Additions FY11 - FY16 (PDF - 491K) Appendix G - Definitions (PDF - 1758K) Appendix H - Acronyms (PDF - 720K)

111

PowerChoice Residential Customer Response to TOU Rates  

E-Print Network (OSTI)

1983. Time-of-Day Electricity Rates for the United States.to Voluntary Time-of-Use Electricity Rates. Resource andCompared to your old electricity rate, would you say that

Peters, Jane S.

2010-01-01T23:59:59.000Z

112

PowerChoice Residential Customer Response to TOU Rates  

E-Print Network (OSTI)

1983. Time-of-Day Electricity Rates for the United States.Effect of Time-of-Use Rates In the Los Angeles ElectricityCustomer Response to TOU Rates. Research Into Action. Public

Peters, Jane S.

2010-01-01T23:59:59.000Z

113

PowerChoice Residential Customer Response to TOU Rates  

E-Print Network (OSTI)

in Residential Electricity Time-of-Use Rates. Journal ofResidential Response to Voluntary Time-of-Use Electricity Rates.

Peters, Jane S.

2010-01-01T23:59:59.000Z

114

VANC-1 Wholesale Power Rate Schedule | Department of Energy  

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

the Customer) in North Carolina and Virginia to whom transmission is provided from the PJM Interconnection LLC (hereinafter called PJM) or Carolina Power & Light Company...

115

PowerChoice Residential Customer Response to TOU Rates  

E-Print Network (OSTI)

adjustment. on your electricity bill. Were you, aware oflike the rate, or their electricity bills while they were onlike the rate, or their electricity bills while they were on

Peters, Jane S.

2010-01-01T23:59:59.000Z

116

CP&L-2-B Wholesale Power Rate Schedule | Department of Energy  

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

2-B Wholesale Power Rate Schedule 2-B Wholesale Power Rate Schedule CP&L-2-B Wholesale Power Rate Schedule Area: Carolina Power & Light, Eastern Division System: Kerr-Philpott This rate schedule shall be available to public bodies and cooperatives (any one of whom is hereinafter called the Customer) in North Carolina and South Carolina to whom power may be transmitted pursuant to contracts between the Government and Carolina Power & Light Company (hereinafter called the Company) and the Customer. This rate schedule shall be applicable to the sale at wholesale of power and accompanying energy generated at the John H. Kerr and Philpott Projects and sold under appropriate contracts between the Government and the Customer. Document Available for Download CP&L-2-B Rate Schedule

117

CP&L-1-B Wholesale Power Rate Schedule | Department of Energy  

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

1-B Wholesale Power Rate Schedule 1-B Wholesale Power Rate Schedule CP&L-1-B Wholesale Power Rate Schedule Area: Carolina Power & Light, Eastern Division System: Kerr-Philpott This rate schedule shall be available to public bodies and cooperatives (any one of whom is hereinafter called the Customer) in North Carolina and South Carolina to whom power may be transmitted and scheduled pursuant to contracts between the Government and Carolina Power & Light Company (hereinafter called the Company) and the Customer. This rate schedule shall be applicable to the sale at wholesale of power and accompanying energy generated at the John H. Kerr and Philpott Projects and sold under appropriate contracts between the Government and the Customer. Document Available for Download CP&L-1-B Rate Schedule

118

Condition Data Aggregation with Application to Failure Rate Calculation of Power Transformers  

E-Print Network (OSTI)

Condition Data Aggregation with Application to Failure Rate Calculation of Power Transformers for condition monitoring and failure rate prediction of power transformers. Specif- ically, the system uses-in-oil field data for assessing the deteriora- tion level of power transformer insulating oil. Keywords: Data

119

PowerChoice Residential Customer Response to TOU Rates  

E-Print Network (OSTI)

of-Day Electricity Rates for the United States. Prepared forrates in the United States is nearly as old as the electricity

Peters, Jane S.

2010-01-01T23:59:59.000Z

120

VA-3-B Wholesale Power Rate Schedule | Department of Energy  

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

Company (hereinafter called the Company), the Company's Transmission Operator, currently PJM Interconnection LLC (hereinafter called PJM), and the Customer. This rate schedule...

Note: This page contains sample records for the topic "motor power rating" 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

VA-1-B Wholesale Power Rate Schedule | Department of Energy  

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

Company (hereinafter called the Company), the Company's Transmission Operator, currently PJM Interconnection LLC (hereinafter called PJM), and the Customer. This rate schedule...

122

CP&L-3-B Wholesale Power Rate Schedule | Department of Energy  

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

3-B Wholesale Power Rate Schedule 3-B Wholesale Power Rate Schedule CP&L-3-B Wholesale Power Rate Schedule Area: Carolina Power & Light, Eastern Division System: Kerr-Philpott This rate schedule shall be available to public bodies and cooperatives (any one of whom is hereinafter called the Customer) in North Carolina and South Carolina to whom power may be scheduled pursuant to contracts between the Government and Carolina Power & Light Company (hereinafter called the Company) and the Customer. This rate schedule shall be applicable to the sale at wholesale of power and accompanying energy generated at the John H. Kerr and Philpott Projects (hereinafter called the Projects) and sold under appropriate contracts between the Government and the Customer. Document Available for Download

123

Power-Factor and Torque Calculation with Consideration of Cross Saturation of the Interior Permanent Magnet Synchronous Motor with  

E-Print Network (OSTI)

Permanent Magnet Synchronous Motor with Brushless Field Excitation Seong Taek Lee1,2 , Timothy A. Burress1 permanent magnet synchronous motor (IPMSM). The conventional two-axis IPMSM model is modified to include motor of a hybrid electric vehicle. I. INTRODUCTION The interior permanent magnet synchronous motor

Tolbert, Leon M.

124

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

125

Impacts of Western Area Power Administration`s power marketing alternatives on retail electricity rates and utility financial viability  

SciTech Connect

Changes in power contract terms for customers of Western`s Salt Lake City Area Office affect electricity rates for consumers of electric power in Arizona, Colorado, Nevada, New Mexico, Utah, and Wyoming. The impacts of electricity rate changes on consumers are studied by measuring impacts on the rates charged by individual utility systems, determining the average rates in regional areas, and conducting a detailed rate analysis of representative utility systems. The primary focus is an evaluation of the way retail electricity rates for Western`s preference customers vary with alternative pricing and power quantity commitment terms under Western`s long-term contracts to sell power (marketing programs). Retail rate impacts are emphasized because changes in the price of electricity are the most direct economic effect on businesses and residences arising from different Western contractual and operational policies. Retail rates are the mechanism by which changes in cost associated with Western`s contract terms are imposed on ultimate consumers, and rate changes determine the dollar level of payments for electric power incurred by the affected consumers. 41 figs., 9 tabs.

Bodmer, E.; Fisher, R.E.; Hemphill, R.C.

1995-03-01T23:59:59.000Z

126

SCE&G-2-E Wholesale Power Rate Schedule | Department of Energy  

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

2-E Wholesale Power Rate Schedule 2-E Wholesale Power Rate Schedule SCE&G-2-E Wholesale Power Rate Schedule Area: None System: Georgia-Alabama-South Carolina This rate schedule shall be available public bodies and cooperatives (any one of which is hereinafter called the Customer) in South Carolina to whom power may be wheeled pursuant to contracts between the Government and the South Carolina Electric & Gas Company (hereinafter called the Company). This rate schedule shall be applicable to the sale at wholesale of power and accompanying energy generated at the Allatoona, Buford, J. Strom Thurmond, Walter F. George, Hartwell, Millers Ferry, West Point, Robert F. Henry, Carters and Richard B. Russell Projects and sold under appropriate contracts between the Government and the Customer. This rate schedule does

127

SCE&G-3-E Wholesale Power Rate Schedule | Department of Energy  

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

3-E Wholesale Power Rate Schedule 3-E Wholesale Power Rate Schedule SCE&G-3-E Wholesale Power Rate Schedule Area: None System: Georgia-Alabama-South Carolina This rate schedule shall be available public bodies and cooperatives (any one of which is hereinafter called the Customer) in South Carolina to whom power may be scheduled pursuant to contracts between the Government and the South Carolina Electric & Gas Company (hereinafter called the Company). This rate schedule shall be applicable to the sale at wholesale of power and accompanying energy generated at the Allatoona, Buford, J. Strom Thurmond, Walter F. George, Hartwell, Millers Ferry, West Point, Robert F. Henry, Carters and Richard B. Russell Projects and sold under appropriate contracts between the Government and the Customer. This rate schedule does

128

A new multi-motor drive system based on two-stage direct power converter.  

E-Print Network (OSTI)

??The two-stage AC to AC direct power converter is an alternative matrix converter topology, which offers the benefits of sinusoidal input currents and output voltages, (more)

Kumar, Dinesh

2011-01-01T23:59:59.000Z

129

Low-power repeater insertion with both delay and slew rate constraints  

Science Conference Proceedings (OSTI)

In this paper, a novel repeater insertion algorithm is presented to minimize the power dissipation of interconnect trees under given timing budgets and slew rate constraints. In contrast to traditional bottom-up dynamic programming approaches, the proposed ... Keywords: interconnect, low power, repeater insertion, slew rate

Yuantao Peng; Xun Liu

2006-07-01T23:59:59.000Z

130

Interruptible Power Rates and Their Role in Utility Distributed Resources Programs  

Science Conference Proceedings (OSTI)

On-site generators installed primarily for use during power outages represent a significant distributed resource (DR). These generators can be readily incorporated into power markets through existing "interruptible" rate structures where customers agree to reduce the electrical demand (on the utility) for specified periods. The extent to which utilities have adopted and/or encouraged interruptible rates is the subject of this report.

2003-02-20T23:59:59.000Z

131

Western Area Power Administration, Desert Southwest Region Facilities Ratings Project  

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

Facilities Ratings Project Facilities Ratings Project Hoover-Mead #1 and #5 230-kV and Mead-Marketplace 500-kV Transmission Lines Continuation Sheet Project Description (Continued) Hoover-Mead # 1 230-kV Transmission Line Along the Hoover-Mead #1 230-kV transmission line, the existing line will be reconductored between structures 0/4 and 4/2, about 3.5 linear miles. Structure 0/4 is located northeast of Mead Substation; structure 4/2 is located southeast of Boulder City Tap. The scope of work for the reconductoring includes the following: * At tangent structures (where there is no change in the angle of the transmission line), pulleys or travelers will be installed where the existing conductor attaches to the insulator. The old conductor will be pulled out through the travelers and new wire will be pulled in. A bucket truck

132

SCE&G-1-E Wholesale Power Rate Schedule | Department of Energy  

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

1-E Wholesale Power Rate Schedule 1-E Wholesale Power Rate Schedule SCE&G-1-E Wholesale Power Rate Schedule Area: South Carolina Electric & Gas Area System: Georgia-Alabama-South Carolina This rate schedule shall be available public bodies and cooperatives (any one of which is hereinafter called the Customer) in South Carolina to whom power may be wheeled and scheduled pursuant to contracts between the Government and the South Carolina Electric & Gas Company (hereinafter called the Company). This rate schedule shall be applicable to the sale at wholesale of power and accompanying energy generated at the Allatoona, Buford, J. Strom Thurmond, Walter F. George, Hartwell, Millers Ferry, West Point, Robert F. Henry, Carters and Richard B. Russell Projects and sold under appropriate

133

SCE&G-4-E Wholesale Power Rate Schedule | Department of Energy  

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

4-E Wholesale Power Rate Schedule 4-E Wholesale Power Rate Schedule SCE&G-4-E Wholesale Power Rate Schedule Area: None System: Georgia-Alabama-South Carolina This rate schedule shall be available public bodies and cooperatives (any one of which is hereinafter called the Customer) in South Carolina served through the transmission facilities of South Carolina Electric & Gas Company (hereinafter called the Company). This rate schedule shall be applicable to the sale at wholesale of power and accompanying energy generated at the Allatoona, Buford, J. Strom Thurmond, Walter F. George, Hartwell, Millers Ferry, West Point, Robert F. Henry, Carters and Richard B. Russell Projects and sold under appropriate contracts between the Government and the Customer. This rate schedule does not apply to energy from pumping operations at the Carters and Richard B.

134

Impact of Dynamic Ratings, Major Power Flow Upgrades, and Green Power Integration on System Planning  

Science Conference Proceedings (OSTI)

Electric power utilities around the world are undergoing a major transformation, which is redefining the utilization of existing power equipment in the electric transmission network due to limited financial incentives and lengthy licensing process for new construction. Under these circumstances, the utilities are forced to find new ways of increasing power flow quickly through existing transmission corridors with minimal investments. Increased power flows of transmission circuits can be achieved by contr...

2009-12-14T23:59:59.000Z

135

PVUSA procurement, acceptance, and rating practices for photovoltaic power plants  

DOE Green Energy (OSTI)

This report is one in a series of PVUSA reports on PVUSA experiences and lessons learned at the demonstration sites in Davis and Kerman, California, and from participating utility host sites. During the course of approximately 7 years (1988--1994), 10 PV systems have been installed ranging from 20 kW to 500 kW. Six 20-kW emerging module technology arrays, five on universal project-provided structures and one turnkey concentrator, and four turnkey utility-scale systems (200 to 500 kW) were installed. PVUSA took a very proactive approach in the procurement of these systems. In the absence of established procurement documents, the project team developed a comprehensive set of technical and commercial documents. These have been updated with each successive procurement. Working closely with vendors after the award in a two-way exchange provided designs better suited for utility applications. This report discusses the PVUSA procurement process through testing and acceptance, and rating of PV turnkey systems. Special emphasis is placed on the acceptance testing and rating methodology which completes the procurement process by verifying that PV systems meet contract requirements. Lessons learned and recommendations are provided based on PVUSA experience.

Dows, R.N.; Gough, E.J.

1995-09-01T23:59:59.000Z

136

Condition monitoring of motor-operated valves in nuclear power plants Pierre Granjon  

E-Print Network (OSTI)

to the valve and increases radiation exposure of operators, leading to long overhaul outage and high techniques rely on the measurement of an internal mechanical quantity and require the presence of human of any internal MOV quantity. In this article, the instantaneous active power absorbed by the induction

Paris-Sud XI, Université de

137

Operating Range Comments Details on page 149 Curve of constant assigned power rating  

E-Print Network (OSTI)

Flat motor ?6 mm, brushless, 0.03 Watt Axial preload > 0.03 N defined through magnetic force between. permissible winding temperature +100°C Weight of motor 0.35 g 8 pole permanent magnet 3 phased coil stator term operation The motor may be briefly overloaded (recurring). Motor with high resistance winding

Ida, Nathan

138

Industry-Wide Error Rate Database in Power Switching: Switching Practices Survey  

Science Conference Proceedings (OSTI)

This report describes a survey that was conducted in 2013 to collect data on utility practices in operational power switching and on rates of switching errors. Over the years, the Electric Power Research Institute (EPRI) Switching Safety and Reliability (SS&R) project has developed two previous estimates of switching errors. These estimates were derived as part of research reported in the 1996 EPRI report Field Operation Power Switching Safety (TR-106465) and in the 2000 EPRI report ...

2013-11-19T23:59:59.000Z

139

Advanced Motors  

SciTech Connect

Project Summary Transportation energy usage is predicted to increase substantially by 2020. Hybrid vehicles and fuel cell powered vehicles are destined to become more prominent as fuel prices rise with the demand. Hybrid and fuel cell vehicle platforms are both dependent on high performance electric motors. Electric motors for transportation duty will require sizeable low-speed torque to accelerate the vehicle. As motor speed increases, the torque requirement decreases which results in a nearly constant power motor output. Interior permanent magnet synchronous motors (IPMSM) are well suited for this duty. , , These rotor geometries are configured in straight lines and semi circular arc shapes. These designs are of limited configurations because of the lack of availability of permanent magnets of any other shapes at present. We propose to fabricate rotors via a novel processing approach where we start with magnet powders and compact them into a net shape rotor in a single step. Using this approach, widely different rotor designs can be implemented for efficiency. The current limitation on magnet shape and thickness will be eliminated. This is accomplished by co-filling magnet and soft iron powders at specified locations in intricate shapes using specially designed dies and automatic powder filling station. The process fundamentals for accomplishing occurred under a previous Applied Technology Program titled, ???????????????¢????????????????????????????????Motors and Generators for the 21st Century???????????????¢???????????????????????????????. New efficient motor designs that are not currently possible (or cost prohibitive) can be accomplished by this approach. Such an approach to motor fabrication opens up a new dimension in motor design. Feasibility Results We were able to optimize a IPMSM rotor to take advantage of the powder co-filling and DMC compaction processing methods. The minimum low speed torque requirement of 5 N-m can be met through an optimized design with magnet material having a Br capability of 0.2 T. This level of magnetic performance can be met with a variety of bonded magnet compositions. The torque ripple was found to drop significantly by using thinner magnet segments. The powder co-filling and subsequent compaction processing allow for thinner magnet structures to be formed. Torque ripple can be further reduced by using skewing and pole shaping techniques. The techniques can be incorporated into the rotor during the powder co-filling process.

Knoth, Edward A.; Chelluri, Bhanumathi; Schumaker, Edward J.

2012-12-14T23:59:59.000Z

140

Development of Ulta-Efficient Electric Motors  

SciTech Connect

Electric motors utilize a large amount of electrical energy in utility and industrial applications. Electric motors constructed with high temperature superconducting (HTS) materials have the potential to dramatically reduce electric motor size and losses. HTS motors are best suited for large motor applications at ratings above 1000 horsepower (hp), where the energy savings from the efficiency improvement can overcome the additional power required to keep the superconductors on the rotor cooled. Large HTS based motors are expected to be half the volume and have half the losses of conventional induction motors of the same rating. For a 5000 hp industrial motor, this energy savings can result in $50,000 in operating cost savings over the course of a single year of operation. Since large horsepower motors utilize (or convert) about 30% of the electrical power generated in the United States and about 70% of large motors are candidates for replacement by HTS motors, the annual energy savings potential through the utilization of HTS motors can be up to $1 Billion in the United States alone. Research in the application of HTS materials to electric motors has lead to a number of HTS motor prototypes yet no industrial HTS motor product has yet been introduced. These motor demonstrations have been synchronous motors with HTS field windings, on the rotor. Figure 1-1 shows a solid model rendering of this type of motor. The rotor winding is made with HTS coils that are held at cryogenic temperature by introducing cooling fluid from the cryocooler to the rotor through a transfer coupling. The stator winding is made of copper wire. The HTS winding is thermally isolated from the warm armature and motor shafts by a vacuum insulation space and through the use of composite torque tubes. The stator in Figure 1-1 is an air core stator in that the stator teeth and a small part of the yoke is made up of nonmagnetic material so the magnetic fields distribute themselves as if in air. Between the HTS field winding and the physical air gap is a series of concentric cylinders that act as vacuum insulation space walls as well as conducting paths for induced currents to flow in order to shield the HTS winding and the rotor cold space from time dependent fields. These time dependent fields may be caused by rotor hunting, during a change in motor load, or by non-fundamental component voltages and currents applied by the inverter. These motors are variable speed controlled by the inverter. Common large motor utility and industrial applications are pump and fan drives that are best suited by a variable speed motor. Inverter control of the HTS motor eliminates the need to design the rotor for line starting, which would dump a large amount of heat into the rotor that would then heavily tax the cryogenic cooling system. The field winding is fed by a brushless exciter that provides DC current to the HTS rotor winding. The stator winding is air or water cooled. Technical and commercial hurdles to industrial HTS motor product introduction and customer acceptance include (1) the high cost of HTS wire and the cryogenic cooling system components, (2) customer concerns about reliability of HTS motors, and (3) the ability to attain the loss reduction potential of large HTS motors. Reliance Electric has demonstrated a number of HTS based electric motors up to a 1000 hp, variable speed synchronous motor with an HTS field winding in the year 2000. In 2001 this motor was tested to 1600 hp with a sinusoidal (constant frequency) supply. Figure 1-2 shows the HTS motor on the dynamometer test stand in the Reliance Electric test lab. The extensive test program of the 1000 hp motor successfully demonstrated the technical feasibility of large HTS motors and the basic technologies involved, however the test results did indicate the need for design refinements. In addition, test results served to identify other more fundamental critical technology issues, and revealed the need to continue research efforts in order to improve future HTS motor first cost, reliability, and performa

Shoykhet, B. (Baldor Comp.); Schiferl, R. (Baldor Comp.); Duckworth, R.; Rey, C.M.; Schwenterly, S.W.; Gouge, M.J.

2008-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "motor power rating" 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

Parametric electric motor study  

DOE Green Energy (OSTI)

Technology for the axial gap motor was developed by DOE with an investment of approximately $15 million. This development effort is for motor technologies of high power density and high efficiency. Such motors that are also small and light-weight are not available on the commercial market because high-power motors have typically been used in large industrial applications where small size and light weight are not requirements. AC Delco has been developing motors since 1918 and is interested in leveraging its research and development dollars to produce an array of motor systems for vehicles and to develop a future line of propulsion products. The DOE focus of the study was applied to machining applications. The most attractive feature of this motor is the axial air gap, which may make possible the removal of the motor`s stationary component from a total enclosure of the remainder of the machine if the power characteristics are adequate. The objectives of this project were to evaluate alternative electric drive systems for machine tools and automotive electric drive systems and to select a best machine type for each of those applications. A major challenge of this project was to produce a small, light-weight, highly efficient motor at a cost-effective price. The project developed machine and machine drive systems and design criteria for the range of applications. The final results included the creation of a baseline for developing electric vehicle powertrain system designs, conventional vehicle engine support system designs, and advanced machine tool configurations. In addition, an axial gap permanent magnet motor was built and tested, and gave, said one engineer involved, a sterling performance. This effort will commercialize advanced motor technology and extend knowledge and design capability in the most efficient electric machine design known today.

Adams, D. [Lockheed Martin Energy Systems, Inc., Oak Ridge, TN (United States); Stahura, D. [GM-AC Delco Systems, Indianapolis, IN (United States)

1995-04-30T23:59:59.000Z

142

Report on Toyota Prius Motor Thermal Management  

DOE Green Energy (OSTI)

In the current hybrid vehicle market, the Toyota Prius drive system is considered the leader in electrical, mechanical, and manufacturing innovations. It is a significant accomplishment that Toyota is able to manufacture and sell the vehicle for a profit. The Toyota Prius traction motor design approach for reducing manufacturing costs and the motor s torque capability have been studied and tested. The findings were presented in two previous Oak Ridge National Laboratory (ORNL) reports. The conclusions from this report reveal, through temperature rise tests, that the 2004 Toyota Prius (THSII) motor is applicable only for use in a hybrid automobile. It would be significantly undersized if used in a fuel cell vehicle application. The power rating of the Prius motor is limited by the permissible temperature rise of the motor winding (170 C) and the motor cooling oil (158 C). The continuous ratings at base speed (1200 rpm) with different coolant temperatures are projected from test data at 900 rpm. They are approximately 15 kW with 105 C coolant and 21 kW with 35 C coolant. These continuous ratings are much lower than the 30 kW specified as a technical motor target of the U.S. Department of Energy FreedomCAR Program. All tests were conducted at about 24 C ambient temperature. The load angle of each torque adjustment was monitored to prevent a sudden stop of the motor if the peak torque were exceeded, as indicated by the load angle in the region greater than 90 electrical degrees. For peak power with 400 Nm torque at 1200 rpm, the permissible running time depends upon the initial winding temperature condition. The projected rate of winding temperature rise is approximately 2.1 C/sec. The cooling-oil temperature does not change much during short peak power operation. For light and medium load situations, the efficiency varies from 80% to above 90%, and the power factor varies from 70% to above 90%, depending on the load and speed. When the motor is loaded heavily near the peak-torque (400-Nm) region, the efficiency goes down to the 40-50% range, and the power factor is nearly 100%. The efficiency is not a major concern at the high-torque region. The water-ethylene-glycol heat exchanger attached to the motor is small. During continuous operation, it dissipates about 76% of the total motor heat loss with 35 C coolant. The heat exchanger is less effective when the coolant temperature increases. With 75 C coolant, the heat exchanger dissipates about 38% of the motor heat. When the coolant temperature is 105 C, the heat exchanger not only stops cooling the motor but also adds heat to the large motor housing that acts as an air-cooled heat sink. From start to the base speed, 400 Nms of torque can be produced by the Prius motor with a reasonably low stator current. However, the permissible running time of the motor depends on the load drawn from the motor and the coolant temperature. In the Toyota Prius hybrid configuration, if the motor gets too hot and cannot keep running, the load can be shifted back to the engine. The motor acts to improve the system efficiency without being overly designed. A detailed thermal model was developed to help predict the temperature levels in key motor components. The model was calibrated and compared with the experimentally measured temperatures. Very good agreement was obtained between model and experiment. This model can now be used to predict the temperature of key motor components at a variety of operating conditions and to evaluate the thermal characteristics of new motor designs. It should be pointed out that a fuel-cell motor does not have an engine to fall back on to provide the needed wheel power. Therefore, the design philosophy of a fuel-cell motor is very different from that of a hybrid Prius motor. Further thermal management studies in the high-speed region of the Prius motor, fed by its inverter, are planned.

Hsu, J.S.

2005-02-11T23:59:59.000Z

143

Improved Motors for Utility Applications, Volume 1: Industry Assessment Study: Update and Analysis  

Science Conference Proceedings (OSTI)

This comprehensive analysis of power plant motor failures, which updates an earlier data base, relates failure rates to operating and maintenance practices, as well as application and manufacture. Using the expanded analytic methodology, utilities can analyze the data for other factors significant to improving motor reliability.

1985-10-01T23:59:59.000Z

144

Comparison and Analysis of Classical Motor with Amorphous Iron Motor Based on Ansoft  

Science Conference Proceedings (OSTI)

At present, various types of motors of total power is up to 420 million kilowatts and the consumption accounts for 60% of country's total electricity. The motor is high cost, energy consumption and so on while it is produced using traditional materials ... Keywords: Ansoft, amorphous iron motor, motor modeling, motor simulation

Jianwei Leng; Ting Liu

2010-08-01T23:59:59.000Z

145

Regional economic impacts of changes in electricity rates resulting from Western Area Power Administration`s power marketing alternatives  

SciTech Connect

This technical memorandum describes an analysis of regional economic impacts resulting from changes in retail electricity rates due to six power marketing programs proposed by Western Area Power Administration (Western). Regional economic impacts of changes in rates are estimated in terms of five key regional economic variables: population, gross regional product, disposable income, employment, and household income. The REMI (Regional Impact Models, Inc.) and IMPLAN (Impact Analysis for Planning) models simulate economic impacts in nine subregions in the area in which Western power is sold for the years 1993, 2000, and 2008. Estimates show that impacts on aggregate economic activity in any of the subregions or years would be minimal for three reasons. First, the utilities that buy power from Western sell only a relatively small proportion of the total electricity sold in any of the subregions. Second, reliance of Western customers on Western power is fairly low in each subregion. Finally, electricity is not a significant input cost for any industry or for households in any subregion.

Allison, T.; Griffes, P.; Edwards, B.K.

1995-03-01T23:59:59.000Z

146

Electric Motors and Critical Materials  

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

Research Suggestions (Have an idea of how to get there) * Integration of motor, power converter, and speed reducer * Soft magnetic core material with high saturation...

147

Primary Metals - Compressor Motors Failing  

Science Conference Proceedings (OSTI)

This power quality (PQ) case study presents the investigation of four failures of compressor motors for a two stage chiller at a primary metals manufacturing facility.

2003-12-31T23:59:59.000Z

148

motor vehicles | OpenEI  

Open Energy Info (EERE)

motor vehicles motor vehicles Dataset Summary Description The data included in this submission is United States Department of Transportation (DOT) data on rates and revenue statistics up to 1995. The data includes state motor-fuel tax receipts, 1919-1995, state motor fuel taxes and related receipts, 1950-1995, and state and federal motor fuel tax rates, 1919-1995 The data is presented in .xlsx format. Source DOT Date Released Unknown Date Updated Unknown Keywords DOT highway motor vehicles rates revenues Data application/vnd.openxmlformats-officedocument.spreadsheetml.sheet icon State motor-fuel tax receipts, 1919-1995 (xlsx, 13.8 KiB) application/vnd.openxmlformats-officedocument.spreadsheetml.sheet icon State motor fuel taxes and related receipts, 1950-1995 (xlsx, 78.5 KiB)

149

A Distributed Power Control and Transmission Rate Allocation Algorithm over Multiple Channels  

E-Print Network (OSTI)

In this paper, we consider multiple channels and wireless nodes with multiple transceivers. Each node assigns one transmitter at each available channel. For each assigned transmitter the node decides the power level and data rate of transmission in a distributed fashion, such that certain Quality of Service (QoS) demands for the wireless node are satisfied. More specifically, we investigate the case in which the average SINR over all channels for each communication pair is kept above a certain threshold. A joint distributed power and rate control algorithm for each transmitter is proposed that dynamically adjusts the data rate to meet a target SINR at each channel, and to update the power levels allowing for variable desired SINRs. The algorithm is fully distributed and requires only local interference measurements. The performance of the proposed algorithm is shown through illustrative examples.

Charalambous, Themistoklis

2011-01-01T23:59:59.000Z

150

Energy Efficient Motors  

E-Print Network (OSTI)

Efficiency is only one aspect of motor performance. This paper discusses how efficiency is influenced by such factors as horsepower rating, poles, actual load, and starting requirements. It discusses some of the variables affecting efficiency, and how to interpret efficiency data. A perspective is given from which to evaluate available energy efficient motor offerings for a given application.

Hoffmeyer, W.

1982-01-01T23:59:59.000Z

151

Utilizing the connected power electronic converter for improved condition monitoring of induction motors and claw-pole generators.  

E-Print Network (OSTI)

??This dissertation proposes several simple, robust, and non-intrusive condition monitoring methods for induction motors fed by closed-loop inverters and claw-pole generators with built-in rectifiers. While (more)

Cheng, Siwei

2012-01-01T23:59:59.000Z

152

A Novel Approach to Determining Motor Load  

E-Print Network (OSTI)

Properly sized electric motors are essential if industrial plant efficiency is to be optimized and energy costs minimized. Because of the difficulty in making power measurements on three phase motors, loading is rarely, if ever, checked. A simple indication of motor load can be achieved by measuring operating speed because speed and load are almost linearly related. The decrease in motor speed from no load conditions, referred to as slip, can be determined with a non-contact, optical tachometer. Field measurements of motor slip were conducted at a textile plant to quantify motor load conditions. To verify the relationship between operating speed and load, measurements of motor power consumption on a representative number of motors were also conducted. The results of the motor survey, including number of motors, size, and load, are summarized in this paper along with an estimate of the savings from replacing oversized motors.

Brown, M.

1992-04-01T23:59:59.000Z

153

Delay Bounded Rate and Power Control in Energy Harvesting Wireless Networks  

E-Print Network (OSTI)

. In [3] solar energy was modeled as a Markov process after analysis of years of observed dataDelay Bounded Rate and Power Control in Energy Harvesting Wireless Networks R.A. Raghuvir and Dinesh Rajan Department of Electrical Engineering Southern Methodist University Dallas, TX 75275

Rajan, Dinesh

154

Asymptotic performance analysis of coded BLAST architectures with statistical rate and power allocations  

Science Conference Proceedings (OSTI)

In this paper we first analyze some mathematical properties of ergodic capacity and outage capacity functions of the layers in Bell labs layered space-time (BLAST) architectures employing successive decoding and interference cancellation. We then present ... Keywords: ergodic capacity, layered architecture, low-density parity-check (LDPC) code, multiple antennas, outage capacity, power allocation, rate allocation

Hyo-Jin Lee; Dong-Min Shin; Kyeongcheol Yang

2010-08-01T23:59:59.000Z

155

Heat engine and electric motor torque distribution strategy for a hybrid electric vehicle  

DOE Patents (OSTI)

A method is provided for controlling a power train system for a hybrid electric vehicle. The method includes a torque distribution strategy for controlling the engine and the electric motor. The engine and motor commands are determined based upon the accelerator position, the battery state of charge and the amount of engine and motor torque available. The amount of torque requested for the engine is restricted by a limited rate of rise in order to reduce the emissions from the engine. The limited engine torque is supplemented by motor torque in order to meet a torque request determined based upon the accelerator position.

Boberg, Evan S. (Hazel Park, MI); Gebby, Brian P. (Hazel Park, MI)

1999-09-28T23:59:59.000Z

156

Simple cost model for EV traction motors  

DOE Green Energy (OSTI)

A simple cost model has been developed that allows the calculation of the OEM cost of electric traction motors of three different types, normalized as a function of power in order to accommodate different power and size. The model includes enough information on the various elements integrated in the motors to allow analysis of individual components and to factor-in the effects of changes in commodities prices. A scalable cost model for each of the main components of an electric vehicle (EV) is a useful tool that can have direct application in computer simulation or in parametric studies. For the cost model to have wide usefulness, it needs to be valid for a range of values of some parameter that determines the magnitude or size of the component. For instance, in the case of batteries, size may be determined by energy capacity, usually expressed in kilowatt-hours (kWh), while in the case of traction motors, size is better determined by rated power, usually expressed in kilowatts (kW). The simplest case is when the cost of the component in question is a direct function of its size; then cost is simply the product of its specific cost ($/unit size) and the number of units (size) in the vehicle in question. Batteries usually fall in this category (cost = energy capacity x $/kWh). But cost is not always linear with size or magnitude; motors (and controllers), for instance, become relatively less expensive as power rating increases. Traction motors, one of the main components for EV powertrains are examined in this paper, and a simplified cost model is developed for the three most popular design variations.

Cuenca, R.M.

1995-02-01T23:59:59.000Z

157

Steam Generator Replacement and Power Up-rating on Tihange 2 Nuclear Plant Safety Study Analyses  

SciTech Connect

The Tihange2 900 MWe 3-L PWR NPP, operated by the Belgian utility Electrabel, was first commissioned in 1982 with a design core power of 2775 MWth. Following an initial core power up-rating by 4,5% in 1995, Electrabel has since replaced the Steam Generators which has allowed a further core power increase by roughly 5% (total 10%) in 2001. For both of each projects, licensing and implementation studies were successfully performed by Tractebel Energy Engineering and Framatome ANP. The demanding new operating conditions required a complete review of the plant design basis for which advanced methods were applied and licensed through a continuous process of discussions with the client and the Belgian Safety Authorities AVN. The licensing process required flexibility in the methods application in order to meet the specific requirements of the S.A., which was achieved within the time schedule and without jeopardising the technical objectives of the utility. (authors)

Malaval, Andre; Marin-Lafleche, Pascale; Forgeot d'Arc, Myriam; Collin, Celine [Framatome ANP (France)

2002-07-01T23:59:59.000Z

158

Image transmission over OFDM channel with rate allocation scheme and minimum peak-toaverage power ratio  

E-Print Network (OSTI)

This paper proposes new scheme for efficient rate allocation in conjunction with reducing peak-to-average power ratio (PAPR) in orthogonal frequency-division multiplexing (OFDM) systems. Modification of the set partitioning in hierarchical trees (SPIHT) image coder is proposed to generate four different groups of bit-stream relative to its significances. The significant bits, the sign bits, the set bits and the refinement bits are transmitted in four different groups. The proposed method for reducing the PAPR utilizes twice the unequal error protection (UEP), using the Read-Solomon codes (RS), in conjunction with bit-rate allocation and selective interleaving to provide minimum PAPR. The output bit-stream from the source code (SPIHT) will be started by the most significant types of bits (first group of bits). The optimal unequal error protection (UEP) of the four groups is proposed based on the channel destortion. The proposed structure provides significant improvement in bit error rate (BER) performance. Per...

Mohammed, Usama S

2010-01-01T23:59:59.000Z

159

Modeling, analysis and neural MPPT control design of a PV-generator powered dc motor-pump system  

Science Conference Proceedings (OSTI)

This paper presents the optimization of a photovoltaic (PV) water pumping system using maximum power point tracking technique (MPPT). The optimization is suspended to reference optimal power. This optimization technique is developed to assure the optimum ... Keywords: artificial neural network controller, drive systems, maximum power point tracking, photovoltaic

Ahmed. M. Kassem

2011-12-01T23:59:59.000Z

160

AC Resonant charger with charge rate unrelated to primary power frequency  

DOE Patents (OSTI)

An AC resonant charger for a capacitive load, such as a PFN, is provided with a variable repetition rate unrelated to the frequency of a multi-phase AC power source by using a control unit to select and couple the phase of the power source to the resonant charger in order to charge the capacitive load with a phase that is the next to begin a half cycle. For optimum range in repetition rate and increased charging voltage, the resonant charger includes a step-up transformer and full-wave rectifier. The next phase selected may then be of either polarity, but is always selected to be of a polarity opposite the polarity of the last phase selected so that the transformer core does not saturate. Thyristors are used to select and couple the correct phase just after its zero crossover in response to a sharp pulse generated by a zero-crossover detector. The thyristor that is turned on then automatically turns off after a full half cycle of its associated phase input. A full-wave rectifier couples the secondary winding of the transformer to the load so that the load capacitance is always charged with the same polarity.

Watson, Harold (Torrance, CA)

1982-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "motor power rating" 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

Ac resonant charger with charge rate unrelated to preimary power requency  

DOE Patents (OSTI)

An ac resonant charger for a capacitive load, such as a pulse forming network (PFN), is provided with a variable repetition rate unrelated to the frequency of a multi-phase ac power source by using a control unit to select and couple the phase of the power source to the resonant charger in order to charge the capacitive load with a phase that is the next to begin a half cycle. For optimum range in repetition rate and increased charging voltage, the resonant charger includes a step-up transformer and full-wave rectifier. The next phase selected may then be of either polarity, but is always selected to be of a polarity opposite the polarity of the last phase selected so that the transformer core does not saturate. Thyristors are used to select and couple the correct phase just after its zero crossover in response to a sharp pulse generated by a zero-crossover detector. The thyristor that is turned on then automatically turns off after a full half cycle of its associated phase input. A full-wave rectifier couples the secondary winding of the transformer to the load so that the load capacitance is always charged with the same polarity.

Not Available

1979-12-07T23:59:59.000Z

162

Burnup increase and Power Up-rate - Operation history of KKL  

Science Conference Proceedings (OSTI)

The Leibstadt nuclear power plant in Switzerland? (KKL), a GE BWR/6 boiling water reactor with an up-rated thermal power of 3600 MW and a nominal net electrical output of 1145 W has been operated for more than 20 years. The core today consists of 648 modern 10x10 assemblies with part length rods which results in a power density of 32 kW/kg Uranium or 63 kW/dm{sup 3}. The plant is operated in a 12 month cycle with shut downs in August. During the last 15 years the transformation of the core was carefully monitored and different fuel assemblies and control rods have been evaluated for an optimized performance of the core. Experience has been gained on core design with control cell core operation and a number of operational issues like change of the isothermal temperature coefficient (ITC), water chemistry with zinc addition and operation with failed fuel. The fuel and fuel assembly behavior has been monitored with numerous fuel inspections on lead use assemblies and selected reload batch assemblies. They have established a good understanding of an optimal fuel performance up to high burnup and the inspection techniques applied in the spent fuel pool on site normally during the outage. (authors)

Ledergerber, G.; Kaufmann, W.; Ritter, A.; Greiner, D. [Kernkraftwerk Leibstadt AG, CH-5325 Leibstadt (Switzerland); Parmar, Y.; Jacot-Guillarmod, R.; Krouthen, J. [Nordostschweizerische Kraftwerke AG, CH-5400 Baden (Switzerland)

2007-07-01T23:59:59.000Z

163

Power-Factor and Torque Calculation under Consideration of Cross Saturation of the Interior Permanent Magnet Synchronous Motor with Brushless Field Excitation  

SciTech Connect

This paper introduces a new method for calculating the power factor and output torque by considering the cross saturation between direct-axis (d-axis) and quadrature-axis (q-axis) of an interior permanent magnet synchronous motor (IPMSM). The conventional two-axis IPMSM model is modified to include the cross saturation effect by adding the cross-coupled inductance terms. This paper also contains the new method of calculating the cross-coupled inductance values as well as self-inductance values in d- and q-axes. The analyzed motor is a high-speed brushless field excitation machine that offers high torque per ampere per core length at low speed and weakened flux at high speed, which was developed for the traction motor of a hybrid electric vehicle. The conventional two-axis IPMSM model was modified to include the cross-saturation effect by adding the cross-coupled inductance terms Ldq and Lqd. By the advantage of the excited structure of the experimental IPMSM, the analyzing works were performed under two conditions, the highest and lowest excited conditions. Therefore, it is possible to investigate the cross-saturation effect when a machine has higher magnetic flux from its rotor. The following is a summary of conclusions that may be drawn from this work: (1) Considering cross saturation of an IPMSM offers more accurate expected values of motor parameters in output torque calculation, especially when negative d-axis current is high; (2) A less saturated synchronous machine could be more affected by the cross-coupled saturation effect; (3) Both cross-coupled inductances, L{sub qd} and L{sub dq}, are mainly governed by d-axis current rather than q-axis current; (4) The modified torque equation, can be used for the dynamic model of an IPMSM for developing a better control model or control strategy; and (5) It is possible that the brushless field excitation structure has a common magnetic flux path on both d- and q-axis, and as a result, the reluctance torque of the machine could be reduced.

Lee, Seong T [ORNL; Burress, Timothy A [ORNL; Tolbert, Leon M [ORNL

2009-01-01T23:59:59.000Z

164

Enhanced IGCC regulatory control and coordinated plant-wide control strategies for improving power ramp rates  

SciTech Connect

As part of ongoing R&D activities at the National Energy Technology Laboratorys (NETL) Advanced Virtual Energy Simulation Training & Research (AVESTAR) Center, this paper highlights strategies for enhancing low-level regulatory control and system-wide coordinated control strategies implemented in a high-fidelity dynamic simulator for an Integrated Gasification Combined Cycle (IGCC) power plant with carbon capture. The underlying IGCC plant dynamic model contains 20 major process areas, each of which is tightly integrated with the rest of the power plant, making individual functionally-independent processes prone to routine disturbances. Single-loop feedback control although adequate to meet the primary control objective for most processes, does not take into account in advance the effect of these disturbances, making the entire power plant undergo large offshoots and/or oscillations before the feedback action has an opportunity to impact control performance. In this paper, controller enhancements ranging from retuning feedback control loops, multiplicative feed-forward control and other control techniques such as split-range control, feedback trim and dynamic compensation, applicable on various subsections of the integrated IGCC plant, have been highlighted and improvements in control responses have been given. Compared to using classical feedback-based control structure, the enhanced IGCC regulatory control architecture reduces plant settling time and peak offshoots, achieves faster disturbance rejection, and promotes higher power ramp-rates. In addition, improvements in IGCC coordinated plant-wide control strategies for Gasifier-Lead, GT-Lead and Plantwide operation modes have been proposed and their responses compared. The paper is concluded with a brief discussion on the potential IGCC controller improvements resulting from using advanced process control, including model predictive control (MPC), as a supervisory control layer.

Mahapatra, P.; Zitney, S.

2012-01-01T23:59:59.000Z

165

System and method to determine electric motor efficiency nonintrusively  

Science Conference Proceedings (OSTI)

A system and method for nonintrusively determining electric motor efficiency includes a processor programed to, while the motor is in operation, determine a plurality of stator input currents, electrical input data, a rotor speed, a value of stator resistance, and an efficiency of the motor based on the determined rotor speed, the value of stator resistance, the plurality of stator input currents, and the electrical input data. The determination of the rotor speed is based on one of the input power and the plurality of stator input currents. The determination of the value of the stator resistance is based on at least one of a horsepower rating and a combination of the plurality of stator input currents and the electrical input data. The electrical input data includes at least one of an input power and a plurality of stator input voltages.

Lu, Bin (Kenosha, WI); Habetler, Thomas G. (Snellville, GA); Harley, Ronald G. (Lawrenceville, GA)

2011-08-30T23:59:59.000Z

166

Clock division as a power saving strategy in a system constrained by high transmission frequency and low data rate  

E-Print Network (OSTI)

Systems are often restricted to have higher transmission frequency than required by their data rates. Possible constraints include channel attenuation, power requirements, and backward compatibility. As a result these ...

Selbst, Andrew D. (Andrew David)

2005-01-01T23:59:59.000Z

167

Electric Motor Predictive and Preventive Maintenance Guide  

Science Conference Proceedings (OSTI)

Electric motor failure could result in lost capacity as well as excessive repair and maintenance costs. This guide provides information on establishing an effective maintenance program to help prevent unexpected motor failures, costly downtime, and unnecessary maintenance costs. Specifically, the guide summarizes technical data relative to four basic power plant motor types and associated components.

1992-05-02T23:59:59.000Z

168

Power and transmission rate orders and related documents. Office of Power Marketing Coordination, data compiled January 1, 1980-December 31, 1981  

Science Conference Proceedings (OSTI)

This publication contains the power and transmission rate orders and related documents issued by the Department of Energy. It covers calendar years 1980 and 1981. The first publication, DOE/CE-007 covering the period from March through December 1979, was published July 1981. This publication is a compilation of all rate orders issued by the Assistant Secretary for Resource Applications and the Assistant Secretary for Conservation and Renewable Energy during calendar years 1980 and 1981 under Delegation Order No. 0204-33. It also includes all final approvals, remands, and disapprovals by the FERC, and a petition to the FERC for reconsideration by a Power Marketing Administration during 1980 and 1981. Also included are two delegation orders along with an amendment and a supplement to one delegation order, a departmental order on financial reporting, and Power and Transmission Rate Adjustment Procedures relating to federal power marketing.

None

1982-08-01T23:59:59.000Z

169

Proceedings of the North American Power Symposium NAPS, MIT, November 1996, pp.559-565. Bifurcation Analysis of Induction Motor Loads  

E-Print Network (OSTI)

Analysis of Induction Motor Loads for Voltage Collapse Studies Claudio A. Ca~nizares William Rosehart, aggregated loads, induction motor models, voltage collapse. I. Introduction Voltage stability problems- lapse of combined induction motor and impedance loads by means of lab measurements and computer

Cañizares, Claudio A.

170

Food Industry - Motor Contactors Burning Up  

Science Conference Proceedings (OSTI)

This power quality (PQ) case study presents the investigation of motor contactors that have burnt up several times in the last year at a food manufacturing facility.

2003-12-31T23:59:59.000Z

171

2007 Wholesale Power Rate Case Final Proposal : Market Price Forecast Study.  

Science Conference Proceedings (OSTI)

This study presents BPA's market price forecasts for the Final Proposal, which are based on AURORA modeling. AURORA calculates the variable cost of the marginal resource in a competitively priced energy market. In competitive market pricing, the marginal cost of production is equivalent to the market-clearing price. Market-clearing prices are important factors for informing BPA's power rates. AURORA was used as the primary tool for (a) estimating the forward price for the IOU REP Settlement benefits calculation for fiscal years (FY) 2008 and 2009, (b) estimating the uncertainty surrounding DSI payments and IOU REP Settlements benefits, (c) informing the secondary revenue forecast and (d) providing a price input used for the risk analysis. For information about the calculation of the secondary revenues, uncertainty regarding the IOU REP Settlement benefits and DSI payment uncertainty, and the risk run, see Risk Analysis Study WP-07-FS-BPA-04.

United States. Bonneville Power Administration.

2006-07-01T23:59:59.000Z

172

Property:OpenEI/UtilityRate/DemandReactivePowerCharge | Open Energy  

Open Energy Info (EERE)

DemandReactivePowerCharge DemandReactivePowerCharge Jump to: navigation, search This is a property of type Number. Pages using the property "OpenEI/UtilityRate/DemandReactivePowerCharge" Showing 25 pages using this property. (previous 25) (next 25) 0 00b7ccdc-c7e0-40d2-907f-acb6ae828292 + 0.25 + 00e0b930-90c6-43c2-971a-91dade33f76a + 0.32 + 00e2a43f-6844-417a-b459-edf32d33b051 + 0.0092 + 00fb7dca-d0a6-4b11-b7de-791c2fb9f2e1 + 2.7 + 01a64840-7edc-4193-8073-ed5604e098ca + 0.83 + 035f3d22-3650-47cc-a427-bb35170db128 + 0.3 + 042f06f4-6a5b-424f-a31f-8e1c5a838700 + 0.27 + 0479cd85-894d-412b-b2ce-3b96912e9014 + 0.2 + 04bab597-fe1e-4507-8d90-144980aeba73 + 0.3 + 05211bd7-b6d3-425c-9f96-0845b7828c3c + 0.27 + 052fbe23-ac02-4195-b76d-e572cc53f669 + 0.68 + 05490683-8158-4d2f-ad96-66d5e4980890 + 0.25 +

173

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

174

The Relation Between Accretion Rate And Jet Power in X-Ray Luminous Elliptical Galaxies  

SciTech Connect

Using Chandra X-ray observations of nine nearby, X-ray luminous elliptical galaxies with good optical velocity dispersion measurements, we show that a tight correlation exists between the Bondi accretion rates calculated from the observed gas temperature and density profiles and estimated black hole masses, and the power emerging from these systems in relativistic jets. The jet powers, which are inferred from the energies and timescales required to inflate cavities observed in the surrounding X-ray emitting gas, can be related to the accretion rates using a power law model of the form log (P{sub Bondi}/10{sup 43} erg s{sup -1}) = A + B log (P{sub jet}/10{sup 43} erg s{sup -1}), with A = 0.62 {+-} 0.15 and B = 0.77 {+-} 0.18. Our results show that a significant fraction of the energy associated with the rest mass of material entering the Bondi accretion radius (2.4{sub -0.7}{sup +1.0} per cent, for P{sub jet} = 10{sup 43} erg s{sup -1}) eventually emerges in the relativistic jets. Our results have significant implications for studies of accretion, jet formation and galaxy formation. The observed tight correlation suggests that the Bondi formulae provide a reasonable description of the accretion process in these systems, despite the likely presence of magnetic pressure and angular momentum in the accreting gas. The similarity of the P{sub Bondi} and P{sub jet} values argues that a significant fraction of the matter entering the accretion radius flows down to regions close to the black holes, where the jets are presumably formed. The tight correlation between P{sub Bondi} and P{sub jet} also suggests that the accretion flows are approximately stable over timescales of a few million years. Our results show that the black hole ''engines'' at the hearts of large elliptical galaxies and groups feed back sufficient energy to stem cooling and star formation, leading naturally to the observed exponential cut off at the bright end of the galaxy luminosity function.

Allen, Steven W.; /KIPAC, Menlo Park; Dunn, R.J.H.; Fabian, A.C.; /Cambridge U., Inst. of Astron.; Taylor, G.B.; /New Mexico U.; Reynolds, C.S.; /Maryland U.

2006-03-10T23:59:59.000Z

175

Self-constructive high-rate system energy modeling for battery-powered mobile systems  

E-Print Network (OSTI)

System energy models are important for energy optimization and management in mobile systems. However, existing system energy models are built in a lab setting with the help from a second computer. Not only are they labor-intensive; but also they do not adequately account for the great diversity in the hardware and usage of mobile systems. Moreover, existing system energy models are intended for energy estimation for time intervals of one second or longer; they do not provide the required rate for fine-grain use such as per-application energy accounting. In this work, we study a self-modeling paradigm in which a mobile system automatically generates its energy model without any external assistance. Our solution, Sesame, leverages the possibility of self power measurement through the smart battery interface and employs a suite of novel techniques to achieve accuracy and rate much higher than that of the smart battery interface. We report the implementation and evaluation of Sesame on a laptop and a smartphone. The experiment results show that Sesame is able to generate system energy models of 95 % accuracy at one estimation per second and of 88 % accuracy at one estimation per 10 ms, without any external assistance. Two fiveday field studies with four laptop and four smartphones users further demonstrate the effectiveness, efficiency, and noninvasiveness of Sesame.

Mian Dong; Lin Zhong

2011-01-01T23:59:59.000Z

176

Deposition Rates of High Power Impulse Magnetron Sputtering: Physics and Economics  

E-Print Network (OSTI)

2007). R. Chistyakov, High deposition rate sputtering, USD. M. Mihut, and S. L. Rohde, Rate enhancement in high powerand often reduced normalized rates, it will find application

Anders, Andre

2010-01-01T23:59:59.000Z

177

2304 IEEE TRANSACTIONS ON INFORMATION THEORY, VOL. 55, NO. 5, MAY 2009 Service-Outage-Based Power and Rate Control for  

E-Print Network (OSTI)

and the receiver and use the channel state information (CSI) to dynamically adapt transmit power and rate according function. The service-outage-based power and rate allocation problem is stated below. In the following, we.g., wireless RF communication, dynamic allocation of resources, e.g., transmit power and in- formation rate

Franceschetti, Massimo

178

Rates and Repayment Services  

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

Rates Loveland Area Project Firm Power Rates Transmission and Ancillary Services Rates 2012 Rate Adjustment-Transmission and Ancillary Services 2010 Rate Adjustment-Firm Power 2009...

179

A University of Alabama Axial-Gap Electric Motor Developmenty  

E-Print Network (OSTI)

­ Develop axial gap permanent-magnet electric Axial motor ­ Develop axial gap permanent-magnet electricCAVT A University of Alabama Axial-Gap Electric Motor Developmenty Research Center OBJECTIVE motor topologies with high torque and power densities MOTIVATION ­ Axial-gap ("pancake") motors have

Carver, Jeffrey C.

180

Method for assessing in-service motor efficiency and in-service motor/load efficiency  

DOE Patents (OSTI)

A method and apparatus for assessing the efficiency of an in-service motor. The operating characteristics of the in-service motor are remotely measured. The operating characteristics are then applied to an equivalent circuit for electrical motors. Finally the equivalent circuit is evaluated to determine the performance characteristics of said in-service motor. Based upon the evaluation an individual is able to determine the rotor speed, power output, efficiency, and toque of the in-service motor. Additionally, an individual is able to confirm the calculations by comparing measured values with values obtained as a result of the motor equivalent circuit evaluation.

Kueck, John D. (Oak Ridge, TN); Otaduy, Pedro J. (Oak Ridge, TN)

1997-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "motor power rating" 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

TFTR Motor Generator  

SciTech Connect

A general description is given of 475 MVA pulsed motor generators for TFTR at Princeton Plasma Physics Laboratory. Two identical generators operating in parallel are capable of supplying 950 MVA for an equivalent square pulse of 6.77 seconds and 4,500 MJ at 0.7 power factor to provide the energy for the pulsed electrical coils and heating system for TFTR. The description includes the operational features of the 15,000 HP wound rotor motors driving each generator with its starting equipment and cycloconverter for controlling speed, power factor, and regulating line voltage during load pulsing where the generator speed changes from 87.5 to 60 Hz frequency variation to provide the 4,500 MJ or energy. The special design characteristics such as fatigue stress calculations for 10/sup 6/ cycles of operation, forcing factor on exciter to provide regulation, and low generator impedance are reviewed.

Murray, J.G.; Bronner, G.; Horton, M.

1977-01-01T23:59:59.000Z

182

7-88 A geothermal power plant uses geothermal liquid water at 160C at a specified rate as the heat source. The actual and maximum possible thermal efficiencies and the rate of heat rejected from this power plant  

E-Print Network (OSTI)

7-31 7-88 A geothermal power plant uses geothermal liquid water at 160ºC at a specified rate and potential energy changes are zero. 3 Steam properties are used for geothermal water. Properties Using saturated liquid properties, the source and the sink state enthalpies of geothermal water are (Table A-4) k

Bahrami, Majid

183

Segmented rail linear induction motor  

DOE Patents (OSTI)

A segmented rail linear induction motor has a segmented rail consisting of a plurality of nonferrous electrically conductive segments aligned along a guideway. The motor further includes a carriage including at least one pair of opposed coils fastened to the carriage for moving the carriage. A power source applies an electric current to the coils to induce currents in the conductive surfaces to repel the coils from adjacent edges of the conductive surfaces.

Cowan, Jr., Maynard (1107 Stagecoach Rd. SE., Albuquerque, NM 87123); Marder, Barry M. (1412 Pinnacle View Dr. NE., Albuquerque, NM 87123)

1996-01-01T23:59:59.000Z

184

Segmented rail linear induction motor  

DOE Patents (OSTI)

A segmented rail linear induction motor has a segmented rail consisting of a plurality of nonferrous electrically conductive segments aligned along a guideway. The motor further includes a carriage including at least one pair of opposed coils fastened to the carriage for moving the carriage. A power source applies an electric current to the coils to induce currents in the conductive surfaces to repel the coils from adjacent edges of the conductive surfaces. 6 figs.

Cowan, M. Jr.; Marder, B.M.

1996-09-03T23:59:59.000Z

185

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

186

High Average Power, 100 Hz Repetition Rate, Table-top EUV/Soft X-ray Lasers  

Science Conference Proceedings (OSTI)

Compact =13.9 nm and =18.9 nm lasers with >0.1 mW average power at 100 Hz repetition rate driven by a diode-pumped, 1 J, CPA laser were demonstrated. Wavelength scaling to =10.9 nm will be discussed.

Reagan, Brendon [Colorado State University, Fort Collins; Wernsing, Keith [Colorado State University, Fort Collins; Baumgarten, Cory [Colorado State University, Fort Collins; Durivage, Leon [Colorado State University, Fort Collins; Berrill, Mark A [ORNL; Furch, Federico [Colorado State University, Fort Collins; Curtis, Alden [Colorado State University, Fort Collins; Salsbury, Chase [Colorado State University, Fort Collins; Luther, Brad [Colorado State University, Fort Collins; Patel, Dinesh [Colorado State University, Fort Collins; Menoni, Carmen [Colorado State University, Fort Collins; Rocca, Jorge [Colorado State University, Fort Collins

2013-01-01T23:59:59.000Z

187

Rates & Repayment  

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

Environmental Review-NEPA Financial Data Operations Planning & Projects Power Marketing Rates Rate Adjustments Transmission Ancillary Services Rates WAPA-137 Rate Order Environmental Review-NEPA Financial Data Operations Planning & Projects Power Marketing Rates Rate Adjustments Transmission Ancillary Services Rates WAPA-137 Rate Order Rates and Repayment Services Rates Current and Historical Rate Information Collbran Power Rates CRSP Power Rates CRSP Transmission System Rates CRSP Management Center interest rates Falcon-Amistad Power Rates Provo River Power Rates Rio Grande Power Rates Seedskadee Power Rates SLCA/IP Power Rates Rate Schedules & Supplemental Rate Information Current Rates for Firm Power, Firm & Non-firm Transmission Service, & Ancillary Services Current Transmission & Ancillary Services Rates Tariffs Components of the SLCA/IP Existing Firm Power Rate Cost Recovery Charge (CRC) Page MOA Concerning the Upper Colorado River Basin

188

Electrical system for a motor vehicle  

DOE Patents (OSTI)

In one embodiment of the present invention, an electrical system for a motor vehicle comprises a capacitor, an engine cranking motor coupled to receive motive power from the capacitor, a storage battery and an electrical generator having an electrical power output, the output coupled to provide electrical energy to the capacitor and to the storage battery. The electrical system also includes a resistor which limits current flow from the battery to the engine cranking motor. The electrical system further includes a diode which allows current flow through the diode from the generator to the battery but which blocks current flow through the diode from the battery to the cranking motor. 2 figs.

Tamor, M.A.

1999-07-20T23:59:59.000Z

189

Electrical system for a motor vehicle  

SciTech Connect

In one embodiment of the present invention, an electrical system for a motor vehicle comprises a capacitor, an engine cranking motor coupled to receive motive power from the capacitor, a storage battery and an electrical generator having an electrical power output, the output coupled to provide electrical energy to the capacitor and to the storage battery. The electrical system also includes a resistor which limits current flow from the battery to the engine cranking motor. The electrical system further includes a diode which allows current flow through the diode from the generator to the battery but which blocks current flow through the diode from the battery to the cranking motor.

Tamor, Michael Alan (Toledo, OH)

1999-01-01T23:59:59.000Z

190

Condition Data Aggregation with Application to Failure Rate Calculation of Power Transformers  

E-Print Network (OSTI)

in electric power systems, power transmission and distribution grids are critical for a nation's growth multiple, highly distributed, and heterogeneous data sources storing various infor- mation about equipment substation equipment condition data collected from distributed data resources, some of which may be local

Honavar, Vasant

191

Nuclear Maintenance Applications Center: Motor Management Guide Supporting Plant License Renewal Including Environmental Qualification Considerations  

Science Conference Proceedings (OSTI)

This report was developed by the Electric Power Research Institutes Large Electric Motor Users Group Information Working Group, which includes motor engineers, motor specialist consultants, and vendors. Environmental qualification (EQ) program owners were also involved in the development of this report. This report addresses the most important elements of a sound motor management program to support an informed decision on motor preservation and motor life extension. Motor life extensions of ...

2013-06-07T23:59:59.000Z

192

Transient Peak Currents in Permanent Magnet Synchronous Motors  

E-Print Network (OSTI)

Transient Peak Currents in Permanent Magnet Synchronous Motors for Symmetrical Short Circuits Terms-- Permanent magnet synchronous motor, short circuit, protection measure, transient behavior I 33095 Paderborn, Germany Abstract--To enable constant-power areas with permanent magnet synchronous

Noé, Reinhold

193

Definition: Power density | Open Energy Information  

Open Energy Info (EERE)

density density Jump to: navigation, search Dictionary.png Power density The rate of energy flow (power) per unit volume, area or mass. Common metrics include: horsepower per cubic inch, watts per square meter and watts per kilogram.[1][2] View on Wikipedia Wikipedia Definition Power density (or volume power density or volume specific power) is the amount of power (time rate of energy transfer) per unit volume. In energy transformers like batteries, fuel cells, motors, etc. but also power supply units or similar, power density refers to a volume. It is then also called volume power density which is expressed as W/m. Volume power density is sometimes an important consideration where space is constrained. In reciprocated internal combustion engines, power density- power per swept

194

Three phase AC motor controller  

DOE Patents (OSTI)

A motor controller for a three phase AC motor (10) which is adapted to operate bidirectionally from signals received either from a computer (30) or a manual control (32). The controller is comprised of digital logic circuit means which implement a forward and reverse command signal channel (27, 29) for the application of power through the forward and reverse power switching relays (16, 18, 20, 22). The digital logic elements are cross coupled to prevent activation of both channels simultaneously and each includes a plugging circuit (65, 67) for stopping the motor upon the removal of control signal applied to one of the two channels (27, 29) for a direction of rotation desired. Each plugging circuit (65, 67) includes a one-shot pulse signal generator (88, 102) which outputs a single pulse signal of predetermined pulsewidth which is adapted to inhibit further operation of the application of power in the channel which is being activated and to apply a reversal command signal to the other channel which provides a reversed phase application of power to the motor for a period defined by the pulse-width output of the one-shot signal generator to plug the motor (10) which will then be inoperative until another rotational command signal is applied to either of the two channels.

Vuckovich, Michael (Elizabeth, PA); Wright, Maynard K. (Bethel Park, PA); Burkett, John P. (South Huntington Township, Westmoreland County, PA)

1984-03-20T23:59:59.000Z

195

Adaptive Rate and Power Allocation Schemes for OFDM/SDMA Systems  

Science Conference Proceedings (OSTI)

In this paper, adaptive resource allocation approaches, which jointly adapts power distribution and subcarrier allocation according to instantaneous channel conditions, is proposed for uplink OFDM/SDMA-based multiuser system. The first scheme utilizes ...

Behrouz Maham; Esrafil Jedari; Alireza Enayati

2007-08-01T23:59:59.000Z

196

Rates and Repayment Services  

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

Customer Letter - Preliminary Review of Drought Adder Component for 2011 Firm Power Rates 2010 Rates and Rate Schedule - Current * 2009 Rates and Rate Schedule 2008 Rates and...

197

Submersible canned motor mixer pump  

DOE Patents (OSTI)

A mixer pump used in a waste tank for mobilizing high-level radioactive liquid waste having a column assembly containing power cables, a motor housing with electric motor means which includes a stator can of a stator assembly and a rotor can of a rotor assembly, and an impeller assembly with an impeller connected to a shaft of the rotor assembly. The column assembly locates the motor housing with the electric motor means adjacent to the impeller which creates an hydraulic head, and which forces the liquid waste into the motor housing to cool the electric motor means and to lubricate radial and thrust bearing assemblies. Hard-on-hard bearing surfaces of the bearing assemblies and a ring assembly between the impeller and electric motor means act to grind down large particles in the liquid waste flow. These larger particles are received in slots in the static bearing members of the radial bearing assemblies. Only solid waste particles smaller than the clearances in the system can pass therethrough, thereby resisting damage to and the interruption of the operation of the mixer pump.

Guardiani, Richard F. (Ohio Township, PA); Pollick, Richard D. (Sarver, PA)

1997-01-01T23:59:59.000Z

198

Submersible canned motor mixer pump  

DOE Patents (OSTI)

A mixer pump is described used in a waste tank for mobilizing high-level radioactive liquid waste having a column assembly containing power cables, a motor housing with electric motor means which includes a stator can of a stator assembly and a rotor can of a rotor assembly, and an impeller assembly with an impeller connected to a shaft of the rotor assembly. The column assembly locates the motor housing with the electric motor means adjacent to the impeller which creates an hydraulic head, and which forces the liquid waste into the motor housing to cool the electric motor means and to lubricate radial and thrust bearing assemblies. Hard-on-hard bearing surfaces of the bearing assemblies and a ring assembly between the impeller and electric motor means act to grind down large particles in the liquid waste flow. These larger particles are received in slots in the static bearing members of the radial bearing assemblies. Only solid waste particles smaller than the clearances in the system can pass there through, thereby resisting damage to and the interruption of the operation of the mixer pump. 10 figs.

Guardiani, R.F.; Pollick, R.D.

1997-10-07T23:59:59.000Z

199

Not a Babe in the Woods: Using MotorMaster Software to Make Sophisticated Electric Motor Purchase Decisions  

E-Print Network (OSTI)

Three-phase motors use more than half of all electricity in the United States. Energy efficient models are available in most motor classes in the 1 to 500 horsepower range, offering simple pay backs under two years. In practice, few motor buyers have performed an economic analysis, resulting in missed energy and dollar savings. MotorMaster software helps identify the best motor for a specific application. Its database of 9,000 motors includes the majority of three-phase motors sold in the United State. Performance information such as Full-Load RPM, torque and amperage rating identify models that meet specific design criteria. MotorMaster calculates operating costs and simple paybacks. This paper reviews the importance of proper electric motor selection and explains how MotorMaster software can be used to identify the most efficient, cost effective and reliable motor for each specific application.

Litman, T.

1993-03-01T23:59:59.000Z

200

Writing Motor Specifications - How to Include Efficiency  

E-Print Network (OSTI)

The escalating cost of electric power coupled with the rapid depletion of our non-renewable resources makes consideration of motor efficiency good sense both from economic and conservation viewpoints. The efficiency of an electric motor can be assessed during bid evaluation by applying loss penalties: however, the actual value can be influenced at an earlier stage by a careful review of what goes into the motor specification.

Quartermaine, B. J.

1980-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "motor power rating" 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

Influence of direct motor-motor interaction in models for cargo transport by a single team of motors  

E-Print Network (OSTI)

We analyze theoretically the effects of excluded-volume interactions between motors on the dynamics of a cargo driven by multiple motors. The model considered shares many commons with other recently proposed in the literature, with the addition of direct interaction between motors and motor back steps. The cargo is assumed to follow a continuum Langevin dynamics, while individual motors evolve following a Monte Carlo algorithm based on experimentally accessible probabilities for discrete forward and backward jumps, and attachment and detachment rates. The links between cargo and motors are considered as non linear springs. By means of numerical simulations we compute the relevant quantities characterizing the dynamical properties of the system, and we compare the results to those for non interacting motors. We find that interactions lead to quite relevant changes in the force-velocity relation for cargo, with a considerable reduction of the stall force, and cause also a notable decrease of the run length. The...

Bouzat, Sebastian; 10.1088/1478-3975/7/4/046009

2010-01-01T23:59:59.000Z

202

AQWON Motors | Open Energy Information  

Open Energy Info (EERE)

AQWON Motors AQWON Motors Jump to: navigation, search Name AQWON-Motors Place Speinshart, Germany Zip 92676 Sector Hydro, Hydrogen Product AQWON-Motors has developed the first hydrogen powered 2 stroke-engine scooter. It has been approved by the German TÃœVÂ (the official technical inspection agency). Coordinates 49.78699°, 11.820385° 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":49.78699,"lon":11.820385,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

203

Sum-Rate Optimal Power Policies for Energy Harvesting Transmitters in an Interference Channel  

E-Print Network (OSTI)

This paper considers a two-user Gaussian interference channel with energy harvesting transmitters. Different than conventional battery powered wireless nodes, energy harvesting transmitters have to adapt transmission to availability of energy at a particular instant. In this setting, the optimal power allocation problem to maximize sum throughput within a given deadline is formulated. The convergence of the proposed iterative coordinate descent method for the problem is proved and the short-term throughput maximizing offline power allocation policy is found. Examples for interference regions with known sum capacities are given with directional water-filling interpretations when possible. Next, stochastic data arrivals are addressed. Finally online and/or distributed near-optimal policies are proposed. Performance of the proposed algorithms are demonstrated through simulations.

Tutuncuoglu, Kaya

2011-01-01T23:59:59.000Z

204

Efficient, High-Torque Electric Vehicle Motor: Advanced Electric Vehicle Motors with Low or No Rare Earth Content  

SciTech Connect

REACT Project: QM Power will develop a new type of electric motor with the potential to efficiently power future generations of EVs without the use of rare-earth-based magnets. Many of todays EV motors use rare earth magnets to efficiently provide torque to the wheels. QM Powers motors would contain magnets that use no rare earth minerals, are light and compact, and can deliver more power with greater efficiency and at reduced cost. Key innovations in this project include a new motor design with iron-based magnetic materials, a new motor control technique, and advanced manufacturing techniques that substantially reduce the cost of the motor. The ultimate goal of this project is to create a cost-effective EV motor that offers the rough peak equivalent of 270 horsepower.

None

2012-01-01T23:59:59.000Z

205

Rare-Earth-Free Traction Motor: Rare Earth-Free Traction Motor for Electric Vehicle Applications  

Science Conference Proceedings (OSTI)

REACT Project: Baldor will develop a new type of traction motor with the potential to efficiently power future generations of EVs. Unlike todays large, bulky EV motors which use expensive, imported rare-earth-based magnets, Baldors motor could be light, compact, contain no rare earth materials, and have the potential to deliver more torque at a substantially lower cost. Key innovations in this project include the use of a unique motor design, incorporation of an improved cooling system, and the development of advanced materials manufacturing techniques. These innovations could significantly reduce the cost of an electric motor.

None

2012-01-01T23:59:59.000Z

206

Method and apparatus for controlling multiple motors  

DOE Patents (OSTI)

A method and apparatus are provided for simultaneously controlling a plurality of stepper motors. Addressing circuitry generates address data for each motor in a periodic address sequence. Memory circuits respond to the address data for each motor by accessing a corresponding memory location containing a first operational data set functionally related to a direction for moving the motor, speed data, and rate of speed change. First logic circuits respond to the first data set to generate a motor step command. Second logic circuits respond to the command from the first logic circuits to generate a third data set for replacing the first data set in memory with a current operational motor status, which becomes the first data set when the motor is next addressed.

Jones, Rollin G. (Los Alamos, NM); Kortegaard, Bert L. (Los Alamos, NM); Jones, David F. (Los Alamos, NM)

1987-01-01T23:59:59.000Z

207

Method and apparatus for controlling multiple motors  

DOE Patents (OSTI)

A method and apparatus are provided for simultaneously controlling a plurality of stepper motors. Addressing circuitry generates address data for each motor in a periodic address sequence. Memory circuits respond to the address data for each motor by accessing a corresponding memory location containing a first operational data set functionally related to a direction for moving the motor, speed data, and rate of speed change. First logic circuits respond to the first data set to generate a motor step command. Second logic circuits respond to the command from the first logic circuits to generate a third data set for replacing the first data set in memory with a current operational motor status, which becomes the first data set when the motor is next addressed.

Jones, R.G.; Kortegaard, B.L.; Jones, D.F.

1986-07-22T23:59:59.000Z

208

Motor generator electric automotive vehicle  

SciTech Connect

A motor generator electric automotive vehicle is described comprising in combination, a traction drive motor coupled by a first drive shaft to a differential of an axle of the vehicle, a main battery bank electrically connected by wires to a small electric motor driving a large D.C. generator having a second drive shaft therebetween, an on-off switch in series with one of the wires to the small motor, a speed control unit attached to an accelerator pedal of the vehicle being coupled with a double pole-double throw reverse switch to the traction drive motor, a charger regulator electrically connected to the generator, a bank of solar cells coupled to the charge regulator, an electric extension cord from the charge regulator having a plug on its end for selective connection to an exterior electric power source, a plurality of pulleys on the second drive shaft, a belt unit driven by the pulley, one the belt unit being connected to a present alternator of the vehicle which is coupled to a present battery and present regulator of the vehicle, and other of the units being connected to power brakes and equipment including power steering and an air conditioner.

Weldin, W.

1986-07-29T23:59:59.000Z

209

Record of Decision for the Safety-Net Cost Recovery Adjustment Clause (SN CRAC) Adjustment to 2002 Wholesale Power Rates (DOE/EIS-0183) (6/30/03)  

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

BONNEVILLE POWER ADMINISTRATION BONNEVILLE POWER ADMINISTRATION NATIONAL ENVIRONMENTAL POLICY ACT RECORD OF DECISION for the Safety-Net Cost Recovery Adjustment Clause (SN CRAC) Adjustment to 2002 Wholesale Power Rates INTRODUCTION The Bonneville Power Administration (BPA) has decided to implement its proposed Safety-Net Cost Recovery Adjustment Clause (SN CRAC) Adjustment to 2002 Wholesale Power Rates. This rate adjustment allows BPA to address potential revenue shortfalls and recover its costs through rates. This rate adjustment involves implementation of one of BPA's existing risk mitigation tools that has been previously subject to review under the National Environmental Policy Act (NEPA), as described more fully below. I have reviewed this previous NEPA documentation and determined that the SN CRAC rate adjustment is adequately covered within

210

2007 Wholesale Power Rate Case Initial Proposal : Market Price Forecast Study.  

SciTech Connect

This chapter presents BPA's market price forecasts, which are based on AURORA modeling. AURORA calculates the variable cost of the marginal resource in a competitively priced energy market. In competitive market pricing, the marginal cost of production is equivalent to the market-clearing price. Market-clearing prices are important factors for informing BPA's rates. AURORA is used as the primary tool for (a) calculation of the demand rate, (b) shaping the PF rate, (c) estimating the forward price for the IOU REP settlement benefits calculation for fiscal years 2008 and 2009, (d) estimating the uncertainty surrounding DSI payments, (e) informing the secondary revenue forecast and (f) providing a price input used for the risk analysis.

United States. Bonneville Power Administration.

2005-11-01T23:59:59.000Z

211

Self-Constructive High-Rate System Energy Modeling for Battery-Powered Mobile Systems  

E-Print Network (OSTI)

and Lin Zhong Department of Electrical and Computer Engineering, Rice University 6100 Main St., TX 77005 for the great diversity in the hardware and usage of mobile systems. Moreover, existing system energy models intervals of at least 10 ms, or at a rate no lower than 100 Hz. Per-application energy accounting is useful

Zhong, Lin

212

MotorMaster+ International  

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

Motors with MotorMaster+ International * Are your plant motor systems running at optimal energy efficiency? * Do you know how to cost-effectively determine whether to repair or...

213

Feasibility Study of a Multi-Purpose Computer Program for Optimizing Heat Rates in Power Cycles  

E-Print Network (OSTI)

A study of currently available commercial codes which evaluate the thermal performance of turbine cycles in power plants is presented. The analytical basis, capabilities, and possible applications of these codes are described. A survey of some user utilities has revealed their strengths and limitations. This paper examines some actual cases where the use of existing codes is either inconvenient or not satisfactory, and might produce somewhat inaccurate or incomplete results. A brief outline of a computer program that can overcome some of these weaknesses is given.

Menuchin, Y.; Singh, K. P.; Hirota, N.

1981-01-01T23:59:59.000Z

214

Motor voltage high harmonics influence to efficient energy usage  

Science Conference Proceedings (OSTI)

Analysis of the effect of non-sinusoidal voltages on the three-phase induction motor is presented in the paper. When the induction motors are supplied by a rectangular shape of the voltage inverter with high levels of harmonic voltage (Uh,i ... Keywords: energy efficiency, harmonics, induction motor, non-sinusoidal voltage, power losses

Miloje M. Kostic; Branka B. Kostic

2011-07-01T23:59:59.000Z

215

Modeling and optimization of permanent magnetic motors  

E-Print Network (OSTI)

This thesis develops analytic models for the prediction and optimization of radial-flux permanent magnet motor torque and efficiency. It also facilitates the design optimization of electromagnetically-powered rotorcraft ...

Pinkham, Andrew P

2008-01-01T23:59:59.000Z

216

Power Spectrum Analysis of Physikalisch-Technische Bundesanstalt Decay-Rate Data: Evidence for Solar Rotational Modulation  

E-Print Network (OSTI)

Evidence for an anomalous annual periodicity in certain nuclear decay data has led to speculation concerning a possible solar influence on nuclear processes. We have recently analyzed data concerning the decay rates of Cl-36 and Si-32, acquired at the Brookhaven National Laboratory (BNL), to search for evidence that might be indicative of a process involving solar rotation. Smoothing of the power spectrum by weighted-running-mean analysis leads to a significant peak at frequency 11.18/yr, which is lower than the equatorial synodic rotation rates of the convection and radiative zones. This article concerns measurements of the decay rates of Ra-226 acquired at the Physikalisch-Technische Bundesanstalt (PTB) in Germany. We find that a similar (but not identical) analysis yields a significant peak in the PTB dataset at frequency 11.21/yr, and a peak in the BNL dataset at 11.25/yr. The change in the BNL result is not significant since the uncertainties in the BNL and PTB analyses are estimated to be 0.13/yr and 0.07/yr, respectively. Combining the two running means by forming the joint power statistic leads to a highly significant peak at frequency 11.23/yr. We comment briefly on the possible implications of these results for solar physics and for particle physics.

P. A. Sturrock; J. B. Buncher; E. Fischbach; J. T. Gruenwald; D. Javorsek II; J. H. Jenkins; R. H. Lee; J. J. Mattes; J. R. Newport

2010-10-11T23:59:59.000Z

217

Electric machine for hybrid motor vehicle - Energy Innovation ...  

A power system for a motor vehicle having an internal combustion engine and an electric machine is disclosed. The electric machine has a stator, a permanent magnet ...

218

Dual-circuit segmented rail phased induction motor - Energy ...  

An improved linear motor utilizes two circuits, rather that one circuit and an opposed plate, to gain efficiency. The powered circuit is a flat conductive coil. The ...

219

Fractional-Slot Surface Mounted PM Motors with Concentrated Windings for HEV Traction Drives  

Science Conference Proceedings (OSTI)

High-power density and efficiency resulting from elimination of rotor windings and reduced magnetic-flux losses have made the rare earth permanent magnet (PM) motor a leading candidate for the Department of Energy's Office of FreedomCAR and Vehicle Technologies (FCVTs) traction drive motor. These traction drives are generally powered by radial-gap motors, having the magnets on or embedded in a rotating cylinder separated from the inside surface of a slotted cylindrical stator by an annular gap. The two main types of radial-gap PM rotors are those with magnets mounted on the surface of a supporting back iron, called PM surface mounted (PMSM) motors, and those with magnets mounted in slots in the rotor, called interior PM (IPM) motors. Most early PM motor research was on the PMSM motor, which was thought to have an inherently low stator inductance. A low stator inductance can lead to currents dangerously exceeding rated current as the back-emf across the inductance increases with speed; consequently, part of the attempted solution has been to increase the stator inductance to reduce the rate of current rise. Although analysis suggested that there should be no problem designing sufficiently high stator inductance into PMSMs, attempts to do so were often not successful and a motor design was sought that would have a higher intrinsic inductance. Commercial research at Toyota has focused on IPM motors because they can achieve a high-saliency ratio, which helps them operate over a high constant power speed ratio (CPSR), but they are more difficult to fabricate. The Oak Ridge National Laboratory's (ORNL) position has been to continue research on brushless direct current (dc) motors (BDCMs) because of ease of fabrication and increased power output. Recently there has been a revival of interest in a fractional-slot PMSMs [15] made with concentrated windings because they possess three important features. First, they can increase the motor's inductance sufficiently to reduce the characteristic current to value of the rated current, which will enable them to operate at high CPSR. This feature also limits short-circuit fault currents. Second, their segmented structure simplifies assembly problems and is expected to reduce assembly costs. Third, the back-emf waveform is nearly sinusoidal with low cogging. To examine in depth this design ORNL entered into a collaborative agreement with the University of Wisconsin to build and test a 6 kW laboratory demonstration unit. Design, fabrication, and testing of the unit to 4000 rpm were completed during FY 2005. The motor will be sent to ORNL to explore ways to control its inverter to achieve higher efficiency during FY 2006. This paper first reviews the concept of characteristic current and what is meant by optimal flux weakening. It then discusses application of the fractional-slot concentrated winding technique to increase the d-axis inductance of a PMSM showing how this approach differs from an integral-slot motor with sinusoidal-distributed windings. This discussion is followed by a presentation of collaborative analyses and comparison with the University of Wisconsin's measured data on a 6 kW, 36-slot, 30-pole motor with concentrated windings. Finally ORNL presents a PMSM design with integral-slot windings that appears to meet the FreedomCAR Specifications, but has some disadvantages. Further collaboration with the University of Wisconsin is planned for FY 2006 to design a motor that meets FreedomCAR specifications.

Bailey, J.M.

2005-10-24T23:59:59.000Z

220

Proposed changes in interest rate criteria and the amortization method for repayment of federal hydro-power investments  

DOE Green Energy (OSTI)

Where review of government policies followed in charging interest on unrepaid investment (32% of total program cost) disclosed those interest rates were less than cost to the US Treasury to borrow funds to finance federal programs, IG recommended consideration of policy changes to recover interest costs on new project more closely to true costs, i.e., perhaps use of a weighted average over entire construction period. Also, a policy to amortize all unrepaid investments on a simultaneous basis should be developed. Comments are appended from the Assistant Secretary for Resource Applications, and from the Director of the Office of Power Regulation, Federal Energy Regulatory Commission. (PSB)

Not Available

1981-01-26T23:59:59.000Z

Note: This page contains sample records for the topic "motor power rating" 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

Thermoelectric generator for motor vehicle  

DOE Patents (OSTI)

A thermoelectric generator for producing electric power for a motor vehicle from the heat of the exhaust gasses produced by the engine of the motor vehicle. The exhaust gasses pass through a finned heat transfer support structure which has seat positions on its outside surface for the positioning of thermoelectric modules. A good contact cylinder provides a framework from which a spring force can be applied to the thermoelectric modules to hold them in good contact on their seats on the surface of the heat transfer support structure.

Bass, John C. (6121 La Pintra Dr., La Jolla, CA 92037)

1997-04-29T23:59:59.000Z

222

Homopolar motor with dual rotors  

DOE Patents (OSTI)

A homopolar motor has a field rotor mounted on a frame for rotation in a first rotational direction and for producing an electromagnetic field, and an armature rotor mounted for rotation on said frame within said electromagnetic field and in a second rotational direction counter to said first rotational direction of said field rotor. The two rotors are coupled through a 1:1 gearing mechanism, so as to travel at the same speed but in opposite directions. This doubles the output voltage and output power, as compared to a motor in which only the armature is rotated. Several embodiments are disclosed. 7 figs.

Hsu, J.S.

1998-12-01T23:59:59.000Z

223

DC Motor control using motor-generator set with controlled generator field  

DOE Patents (OSTI)

A d.c. generator is connected in series opposed to the polarity of a d.c. power source supplying a d.c. drive motor. The generator is part of a motor-generator set, the motor of which is supplied from the power source connected to the motor. A generator field control means varies the field produced by at least one of the generator windings in order to change the effective voltage output. When the generator voltage is exactly equal to the d.c. voltage supply, no voltage is applied across the drive motor. As the field of the generator is reduced, the drive motor is supplied greater voltage until the full voltage of the d.c. power source is supplied when the generator has zero field applied. Additional voltage may be applied across the drive motor by reversing and increasing the reversed field on the generator. The drive motor may be reversed in direction from standstill by increasing the generator field so that a reverse voltage is applied across the d.c. motor.

Belsterling, Charles A. (Norristown, PA); Stone, John (Medford, NJ)

1982-01-01T23:59:59.000Z

224

Force-velocity relations for multiple-molecular-motor transport  

E-Print Network (OSTI)

A transition rate model of cargo transport by $N$ molecular motors is proposed. Under the assumption of steady state, the force-velocity curve of multi-motor system can be derived from the force-velocity curve of single motor. Our work shows, in the case of low load, the velocity of multi-motor system can decrease or increase with increasing motor number, which is dependent on the single motor force-velocity curve. And most commonly, the velocity decreases. This gives a possible explanation to some recent

Ziqing Wang; Ming Li

2009-06-26T23:59:59.000Z

225

Power Electronics and Electric Machines  

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

PEEM Activities Application Power Electronics Electric Machines Traction Drive System Inverter & Boost Converter (if needed) MotorGenerator Vehicle Power Management Bi-directional...

226

Synchronous operation of the BLDC motor  

E-Print Network (OSTI)

The brushless de (BLDC) motor is becoming widely used and popular in the small horsepower motor applications. Factors such as simplicity in control, low cost, high efficiency, low frame size, high torque per inertia, high power density and, most importantly, being br-ushless are the reasons that make the BLDC motor very attractive in motor drive applications. In this research a systematic approach to synchronous operation of the brushless DC (BLDC) motor has been investigated and implemented. This thesis establishes principles of synchronous operation of the BLDC motor, develops stable operating conditions, derives the required implementation formulas and introduces some new definitions. The synchronous system follows, open loop, a speed command. The system has been provided by two input references: current and speed. The current reference throughout the operation has been kept constant at the maximum applicable continuous current to obtain maximum torque. Current regulation has been achieved by hysteresis current control. The speed reference has been varied from zero speed to the desired speed linearly. Once speed reaches to the desired speed, it is kept constant at the desired speed. Since the motor operates synchronously and no position information has been used, the motor has to follow exactly the reference speed, otherwise pull out occurs. By this implementation, three operating points of the BLDC motor with synchronous operational system has been presented. One of the three operating points at maximum speed corresponds to maximum load operation.

Guzelgunler, Yilcan

1998-01-01T23:59:59.000Z

227

Advanced regulatory control and coordinated plant-wide control strategies for IGCC targeted towards improving power ramp-rates  

Science Conference Proceedings (OSTI)

As part of ongoing R&D activities at the National Energy Technology Laboratory's (NETL) Advanced Virtual Energy Simulation Training & Research (AVESTAR) Center, this paper highlights strategies for enhancing low-level regulatory control and system-wide coordinated control strategies implemented in a high-fidelity dynamic simulator for an Integrated Gasification Combined Cycle (IGCC) power plant with carbon capture. The underlying IGCC plant dynamic model contains 20 major process areas, each of which is tightly integrated with the rest of the power plant, making individual functionally-independent processes prone to routine disturbances. Single-loop feedback control although adequate to meet the primary control objective for most processes, does not take into account in advance the effect of these disturbances, making the entire power plant undergo large offshoots and/or oscillations before the feedback action has an opportunity to impact control performance. In this paper, controller enhancements ranging from retuning feedback control loops, multiplicative feed-forward control and other control techniques such as split-range control, feedback trim and dynamic compensation, applicable on various subsections of the integrated IGCC plant, have been highlighted and improvements in control responses have been given. Compared to using classical feedback-based control structure, the enhanced IGCC regulatory control architecture reduces plant settling time and peak offshoots, achieves faster disturbance rejection, and promotes higher power ramp-rates. In addition, improvements in IGCC coordinated plant-wide control strategies for Gasifier-Lead, GT-Lead and Plantwide operation modes have been proposed and their responses compared. The paper is concluded with a brief discussion on the potential IGCC controller improvements resulting from using advanced process control, including model predictive control (MPC), as a supervisory control layer.

Mahapatra, P.; Zitney, S.

2012-01-01T23:59:59.000Z

228

EV Everywhere Grand Challenge - Electric Motors and Critical Materials Breakout  

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

Electric Motors and Critical Electric Motors and Critical Materials Breakout Laura Marlino Oak Ridge National Laboratory Iver Anderson Ames Laboratory Facilitators July 24, 2012 EV Everywhere Grand Challenge Vehicle Technologies Program - Advanced Power Electronics and Electric Motors eere.energy.gov Electric Drive Status and Targets Current Status* PHEV 40** AEV 100** AEV 300+ System Cost $/kW 20 ($1100) 5 ($600) 14 ($1680) 4 ($600) Motor Specific Power kW/kg 1.3 1.9 1.5 2 PE Specific Power kW/kg 10.5 16 12 16.7 System Peak Efficiency % 90 97 91 98 2022 EV Everywhere Targets Extremely Aggressive Targets Especially Challenging for the Electric Motor * 55kW system ** 120kW system + 150 kW system Vehicle Technologies Program - Advanced Power Electronics and Electric Motors eere.energy.gov

229

Lab 1 -Motor Spin Down Test The angular speed ! of a motor is governed by the rst order di erential equation  

E-Print Network (OSTI)

Lab 1 - Motor Spin Down Test PRE-LAB The angular speed ! of a motor is governed by the rst order di erential equation I _! + b! = 0 where I is the moment of inertia of the motor and attachments about the motor's axis and b is the linear viscous damping constant. a. The rate of the exponential decay of !t

Stanford University

230

Variable-Rate State Gasoline Taxes  

E-Print Network (OSTI)

gasoline tax, fell correspondingly. As shown in Figure 3, state motorGasoline Taxes Inflation and increased fuel economy have reduced the buying power of the revenues collected from state and federal motor

Ang-Olson, Jeffrey; Wachs, Martin; Taylor, Brian D.

2000-01-01T23:59:59.000Z

231

Motor torque compensation of an induction electric motor by ...  

Motor torque compensation of an induction electric motor by adjusting a slip command during periods of supposed change in motor temperature United States Patent

232

Application of Extruded Dielectric Cable Model in the Dynamic Thermal Circuit Rating (DTCR) System for San Diego Gas & Electric's Ot ay Mesa Power Loop Project  

Science Conference Proceedings (OSTI)

Due to limited incentives for new construction, utilities around the world are undergoing a major transformation that is redefining the use of existing power equipment in the electric transmission network. Under these circumstances, utilities are forced to find new ways to increase power flow through the existing transmission corridors with minimal investments. This report addresses the application of the Electric Power Research Institute's (EPRI's) Dynamic Thermal Circuit Rating (DTCR) program to San Di...

2010-02-02T23:59:59.000Z

233

Doubly Fed Induction Generator in an Offshore Wind Power Plant Operated at Rated V/Hz: Preprint  

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

Doubly Fed Induction Generator Doubly Fed Induction Generator in an Offshore Wind Power Plant Operated at Rated V/Hz Preprint Eduard Muljadi, Mohit Singh, and Vahan Gevorgian To be presented at the IEEE Energy Conversion Congress and Exhibition Raleigh, North Carolina September 15-20, 2012 Conference Paper NREL/CP-5500-55573 June 2012 NOTICE The submitted manuscript has been offered by an employee of the Alliance for Sustainable Energy, LLC (Alliance), a contractor of the US Government under Contract No. DE-AC36-08GO28308. Accordingly, the US Government and Alliance retain a nonexclusive royalty-free license to publish or reproduce the published form of this contribution, or allow others to do so, for US Government purposes. This report was prepared as an account of work sponsored by an agency of the United States government.

234

Distributive Subband Allocation, Power and Rate Control for Relay-Assisted OFDMA Cellular System with Imperfect System State Knowledge  

E-Print Network (OSTI)

In this paper, we consider distributive subband, power and rate allocation for a two-hop transmission in an orthogonal frequency-division multiple-access (OFDMA) cellular system with fixed relays which operate in decode-and-forward strategy. We take into account of system fairness by considering weighted sum goodput as our optimization objective. Based on the cluster-based architecture, we obtain a fast-converging distributive solution with only local imperfect CSIT by using decomposition of the optimization problem. To further reduce the signaling overhead and computational complexity, we propose a reduced feedback distributive solution, which can achieve asymptotically optimal performance for large number of users with arbitrarily small feedback overhead per user. We also derive asymptotic average system throughput for the relay-assisted OFDMA system so as to obtain useful design insights.

Cui, Ying; Wang, Rui

2009-01-01T23:59:59.000Z

235

Motor voltage asymmetry influence to the efficient energy usage  

Science Conference Proceedings (OSTI)

Analysis of the effect of unbalanced voltages on the three-phase induction motor is presented in the paper. Since the unbalanced voltage of 2%, 3.5% and 5% increase in losses could reach, in the same order, the amount of 8%, 25% and 50% of nominal power ... Keywords: asymetry, energy efficiency, induction motor, power losses, standard

Miloje Kostic; Aleksandar Nikolic

2010-07-01T23:59:59.000Z

236

Microsoft PowerPoint - Clean Cities Web Presentation - Francfort...  

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

off-board electricity source, mostly from power plants via the electric grid * Captures energy during regenerative braking: electric motor(s) acts as a generator * No...

237

Developing a Motor Management Policy at BASF  

E-Print Network (OSTI)

In early 1998 Thomas R. Theising, BASF Corporate Engineering initiated the formation of a motor management team. The goal of the team was to develop a Motor Management Guideline to better manage the purchase and repair of motors used throughout the company. BASF draws a 240MW electrical power load. Accepting that 70% (industry standards range from 63 to 75% for BASF's businesses) of this load was consumed by rotating equipment and assuming an average cost of$401MWh at 8400 hours of annual operation BASF spends over $56M annually to operate electric motors. A guideline to better manage the purchase and repair of these motors could reduce this operating cost by 3 to 5%, which translates to $1.7M to $2.8M annually. An estimated total cost to BASF for implementation is $200K. The development of a Motor Management Guideline required the cooperative effort of a team of individuals. This team consisted of representatives from several BASF manufacturing locations, Corporate Engineering, Corporate Purchasing and Energy Management. Also, BASF included representatives from Duke Power and from Advanced Energy (AE). Advanced Energy had previously provided motor testing services to the BASF facility in Enka, NC.

Zickefoose, B.; Theising, T. R.

2001-05-01T23:59:59.000Z

238

Solid Rocket Motor Acoustic Testing  

DOE Green Energy (OSTI)

Acoustic data are often required for the determination of launch and powered flight loads for rocket systems and payloads. Such data are usually acquired during test firings of the solid rocket motors. In the current work, these data were obtained for two tests at a remote test facility where we were visitors. This paper describes the data acquisition and the requirements for working at a remote site, interfacing with the test hosts.

Rogers, J.D.

1999-03-31T23:59:59.000Z

239

Influence of direct motor-motor interaction in models for cargo transport by a single team of motors  

E-Print Network (OSTI)

We analyze theoretically the effects of excluded-volume interactions between motors on the dynamics of a cargo driven by multiple motors. The model considered shares many commons with other recently proposed in the literature, with the addition of direct interaction between motors and motor back steps. The cargo is assumed to follow a continuum Langevin dynamics, while individual motors evolve following a Monte Carlo algorithm based on experimentally accessible probabilities for discrete forward and backward jumps, and attachment and detachment rates. The links between cargo and motors are considered as non linear springs. By means of numerical simulations we compute the relevant quantities characterizing the dynamical properties of the system, and we compare the results to those for non interacting motors. We find that interactions lead to quite relevant changes in the force-velocity relation for cargo, with a considerable reduction of the stall force, and cause also a notable decrease of the run length. These effects are mainly due to traffic-like phenomena in the microtubule. The consideration of several parallel tracks for motors reduces such effects. However, we find that for realistic values of the number of motors and the number of tracks, the influence of interactions on the global parameters of transport of cargo are far from being negligible. Our studies provide also an analysis of the relevance of motor back steps on the modeling, and of the influence of different assumptions for the detachment rates. In particular, we discuss these two aspects in connection with the possibility of observing processive back motion of cargo at large load forces.

Sebastian Bouzat; Fernando Falo

2010-12-14T23:59:59.000Z

240

Effective Rate Period  

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

10012012 - 09302013 Mid-Year Changes (if applicable) 10012012 - 09302013 Power Rates Annual Revenue Requirement Rate Schedule Power Revenue Requirement 73,381,487...

Note: This page contains sample records for the topic "motor power rating" 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

Voltage unbalance effects on induction motor performance  

Science Conference Proceedings (OSTI)

The reliability of electric drives and driven motors depends on the quality of the power supply voltage especially in the critical industrial process. In this work, a theoretical study of the effects of voltage unbalances, sags and swells on induction ... Keywords: efficiency, power losses and derating factor, sags, symmetrical components, voltage unbalance

L. Refoufi; H. Bentarzi; F. Z. Dekhandji

2006-09-01T23:59:59.000Z

242

Stepping Motor Control System  

E-Print Network (OSTI)

This paper describes a hardware system designed to facilitate position and velocity control of a group of eight stepping motors using a PDP-11. The system includes motor driver cards and other interface cards in addition ...

Larson, Noble G.

243

OMNI SMARTPUMP: DIRECT CURRENT POWERED  

E-Print Network (OSTI)

the energy savings of the variable speed DC motor over existing variable speed AC motors that couldOMNI SMARTPUMP: DIRECT CURRENT POWERED DRIP IRRIGATION SYSTEM Prepared For: California Energy Commission Energy Innovations Small Grant Program Prepared By: Omni Instruments

244

Quantum motor and future  

E-Print Network (OSTI)

In a popular language, the possibilities of the Casimir expulsion effect are presented, which can be the basis of quantum motors. Such motors can be in the form of a special multilayer thin film with periodic and complex nanosized structures. Quantum motors of the type of the Casimir platforms can be the base of transportation, energy and many other systems in the future.

Evgeny G. Fateev

2013-01-20T23:59:59.000Z

245

Quantum motor and future  

E-Print Network (OSTI)

In a popular language, the possibilities of the Casimir expulsion effect are presented, which can be the basis of quantum motors. Such motors can be in the form of a special multilayer thin film with periodic and complex nanosized structures. Quantum motors of the type of the Casimir platforms can be the base of transportation, energy and many other systems in the future.

Fateev, Evgeny G

2013-01-01T23:59:59.000Z

246

Nuclear Maintenance Applications Center: Guidance for Developing an Electric Motor Specialist  

Science Conference Proceedings (OSTI)

The people responsible for electric motors in the power industry are known by various titlesmotor specialist, component engineer, motor technician, and electrical technician, to name a few. Although motor duties and responsibilities are often spread across several departmentssuch as maintenance, operations, engineering, and procurementit is up to the motor specialist to ensure that motor health and reliability are maintained. This report presents a tiered approach to developing the necessary skills and k...

2010-12-23T23:59:59.000Z

247

Motor/generator  

DOE Patents (OSTI)

A motor/generator is provided for connecting between a transmission input shaft and an output shaft of a prime mover. The motor/generator may include a motor/generator housing, a stator mounted to the motor/generator housing, a rotor mounted at least partially within the motor/generator housing and rotatable about a rotor rotation axis, and a transmission-shaft coupler drivingly coupled to the rotor. The transmission-shaft coupler may include a clamp, which may include a base attached to the rotor and a plurality of adjustable jaws.

Hickam, Christopher Dale (Glasford, IL)

2008-05-13T23:59:59.000Z

248

Study of Shifting without Driving Force Interrupt for Double Electric Motor HEV  

Science Conference Proceedings (OSTI)

For traditional gearbox, the engine power is cut off while shifting, which will interrupt the power of power-train, make velocity down, affect the acceleration of up gear and lower the vehicle dynamic. A double electric motor hybrid electric vehicle ... Keywords: Double Electric Motor HEV, Shifting Without Driving Force Interrupt (SWDFI), Integrated Power-train

Wang Jiaxue; Wang Qingnian; Wang Weihua; Zeng Xiaohua; Li Chuan

2009-10-01T23:59:59.000Z

249

Variable current speed controller for eddy current motors  

DOE Patents (OSTI)

A speed control system for eddy current motors is provided in which the current to the motor from a constant frequency power source is varied by comparing the actual motor speed signal with a setpoint speed signal to control the motor speed according to the selected setpoint speed. A three-phase variable voltage autotransformer is provided for controlling the voltage from a three-phase power supply. A corresponding plurality of current control resistors is provided in series with each phase of the autotransformer output connected to inputs of a three-phase motor. Each resistor is connected in parallel with a set of normally closed contacts of plurality of relays which are operated by control logic. A logic circuit compares the selected speed with the actual motor speed obtained from a digital tachometer monitoring the motor spindle speed and operated the relays to add or substract resistance equally in each phase of the motor input to vary the motor current to control the motor at the selected speed.

Gerth, H.L.; Bailey, J.M.; Casstevens, J.M.; Dixon, J.H.; Griffith, B.O.; Igou, R.E.

1982-03-12T23:59:59.000Z

250

The torque-speed relationship of the bacterial flagellar motor  

E-Print Network (OSTI)

Many swimming bacteria are propelled by flagellar filaments driven by a rotary motor. Each of these tiny motors can generate an impressive torque. The motor torque vs. speed relationship is considered one of the most important measurable characteristics of the motor and therefore is a major criterion for judging models proposed for the working mechanism. Here we give an explicit explanation for this torquespeed curve. The same physics also can explain certain puzzling properties of other motors. energy conversion ? mathematical model ? molecular motor ? proton motive force ? mechanochemistry The bacterial flagellar motor (BFM) consists of a rotary motor embedded in the cell envelope connected to an extracellular helical propeller (see Fig. 1) (14). The motor is powered by the flow of ions down an electrochemical gradient across the cytoplasmic membrane into the cell. The ions are typically H ? (protons) in Escherichia coli and Na ? in alkalophiles and marine Vibrio species. For convenience of discussion, we will focus on the proton motor, although most of the discussion applies to the sodium motor as well. The electrochemical gradient, ?? (proton-motive force or sodium-motive force), consists of a transmembrane voltage and a concentration difference across the membrane, both of which are maintained by various metabolic processes. The proton-motive force is defined as ?? ? pmf ? ?? membrane potential ? 2.303 kBT e ?pH.

Jianhua Xing; Fan Bai; Richard Berry; George Oster; Transmembrane Ion

2006-01-01T23:59:59.000Z

251

7-29 A coal-burning power plant produces 300 MW of power. The amount of coal consumed during a one-day period and the rate of air flowing through the furnace are to be determined.  

E-Print Network (OSTI)

7-11 7-29 A coal-burning power plant produces 300 MW of power. The amount of coal consumed during The heating value of the coal is given to be 28,000 kJ/kg. Analysis (a) The rate and the amount of heat inputs'tQQ The amount and rate of coal consumed during this period are kg/s48.33 s360024 kg10893.2 MJ/kg28 MJ101.8 6

Bahrami, Majid

252

Low-power low-rate goes long-range: the case for secure and cooperative machine-to-machine communications  

Science Conference Proceedings (OSTI)

The vision of connecting a large amount of objects on this planet to improve well-being and safety is slowly taking shape. Preceded by a decade-long era of research on low-power low-rate short-range wireless sensor networks, first proprietary and later ...

Andrea Bartoli; Mischa Dohler; Juan Hernndez-Serrano; Apostolos Kountouris; Dominique Barthel

2011-05-01T23:59:59.000Z

253

Hybrid vehicle motor alignment  

DOE Patents (OSTI)

A rotor of an electric motor for a motor vehicle is aligned to an axis of rotation for a crankshaft of an internal combustion engine having an internal combustion engine and an electric motor. A locator is provided on the crankshaft, a piloting tool is located radially by the first locator to the crankshaft. A stator of the electric motor is aligned to a second locator provided on the piloting tool. The stator is secured to the engine block. The rotor is aligned to the crankshaft and secured thereto.

Levin, Michael Benjamin (Ann Arbor, MI)

2001-07-03T23:59:59.000Z

254

MotorMaster+  

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

industrial facilities, MotorMaster+ 4.0 contains expanded capabilities for inventory management, maintenance logging, lifecycle costing, savings tracking and trending,...

255

Electric Motor Tiered Maintenance Program  

Science Conference Proceedings (OSTI)

Electric motor predictive and preventive maintenance guidance has been developed to provide information to help maximize motor reliability and to minimize the need for major motor repairs. However, if all recommendations presented in most guides are followed and applied to all motors, the cost of motor maintenance would be unwieldy and consume more than its share of maintenance budgets.

2002-08-27T23:59:59.000Z

256

Life Expectancy of Motors in Mild Nuclear Plant Environments  

Science Conference Proceedings (OSTI)

Predicted life expectancies of commercial-grade motors used in the milder environments of nuclear power plants indicate that those motors can last for the life of the plant if properly maintained. This report details methods by which utilities can make such predictions and supplies the extensive data on which the analytic techniques are based.

1985-02-21T23:59:59.000Z

257

Neural correlates underlying motor map plasticity and skilled motor behavior  

E-Print Network (OSTI)

of neurons within the motor cortex. Physiol Rev, 1975. 55(and S.P. Wise, The motor cortex of the rat: cytoarchitecturedelayed changes of rat motor cortical output representation

Ramanathan, Dhakshin

2007-01-01T23:59:59.000Z

258

Power Plant Electrical Reference Series, Volumes 1-16: Volume 1: Electric Generators; Volume 2: Power Transformers; Volume 3: Auxili ary System Planning; Volume 4: Wire and Cable; Volume 5: Grounding and Lightning Protection; Volume 6: Motors; Volume 7..  

Science Conference Proceedings (OSTI)

This comprehensive and practical guide to electric power apparatus and electrical phenomena provides an up-to-date source book for power plant managers, engineers, and operating personnel. Aiding in the recognition and prevention of potential problems, the 16-volume guide can help utilities save staff time and reduce operating expenses.

1988-05-01T23:59:59.000Z

259

PowerPoint Presentation  

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

Batteries Batteries for Hybrid Electric Automobiles What is a hybrid electric vehicle? What does it do? What does the battery have to do? What are the candidate batteries? How should we choose between them? Battery (size proportional to capacity) Generator / motor Electrical energy flow (flow rate proportional to thickness) Mechanical energy flow (flow rate proportional to thickness) ISG Series hybrid Electric drive Battery (size proportional to capacity) Generator / motor Electrical energy flow (flow rate proportional to thickness) Mechanical energy flow (flow rate proportional to thickness) SLI only Parallel hybrid Battery (size proportional to capacity) Generator / motor Electrical energy flow (flow rate proportional to thickness) Mechanical energy flow (flow rate proportional to thickness)

260

Dynamic Phase Transitions in Coupled Motor Proteins  

E-Print Network (OSTI)

The effect of interactions on dynamics of coupled motor proteins is investigated theoretically. A simple stochastic discrete model, that allows to calculate explicitly the dynamic properties of the system, is developed. It is shown that there are two dynamic regimes, depending on the interaction between the particles. For strong interactions the motor proteins move as one tight cluster, while for weak interactions there is no correlation in the motion of the proteins, and the particle separation increases steadily with time. The boundary between two dynamic phases is specified by a critical interaction that has a non-zero value only for the coupling of the asymmetric motor proteins, and it depends on the temperature and the transitions rates. At the critical interaction there is a change in a slope for the mean velocities and a discontinuity in the dispersions of the motor proteins as a function of the interaction energy.

Evgeny B. Stukalin; Anatoly B. Kolomeisky

2005-09-16T23:59:59.000Z

Note: This page contains sample records for the topic "motor power rating" 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

Energy Savings of Variable Speed Motors  

E-Print Network (OSTI)

This paper investigates the energy savings available by utilizing variable speed motors on pump and fan applications. Conventional control of flow or pressure in process plants is normally accomplished by throttling the various streams with control valves. Depending on the system and the actual operating conditions, this throttling may consume a considerable amount of energy. The hydraulics of different systems are investigated to generalize high energy saving applications. Typical pump characteristics at varying speeds are investigated since most performance curves are only available at a constant speed. The various types of variable speed electric motors are discussed. However, the primary variable speed system recommended is a variable frequency speed system which utilizes standard induction motors. Specific cases of centrifugal pump applications and cooling tower fan service are presented. Turndown frequencies, stream factors, and electric rates are included in the evaluation. The energy savings of a variable speed system becomes significant when flow rates vary widely and the electrical rates are high.

Fishel, F. D.

1979-01-01T23:59:59.000Z

262

Doubly Fed Induction Generator in an Offshore Wind Power Plant Operated at Rated V/Hz: Preprint  

DOE Green Energy (OSTI)

This paper introduces the concept of constant Volt/Hz operation of offshore wind power plants. The deployment of offshore WPPs requires power transmission from the plant to the load center inland. Since this power transmission requires submarine cables, there is a need to use High-Voltage Direct Current transmission, which is economical for transmission distances longer than 50 kilometers. In the concept presented here, the onshore substation is operated at 60 Hz synced with the grid, and the offshore substation is operated at variable frequency and voltage, thus allowing the WPP to be operated at constant Volt/Hz.

Muljadi, E.; Singh, M.; Gevorgian, V.

2012-06-01T23:59:59.000Z

263

Rates - WAPA-137 Rate Order  

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

WAPA-137 Rate Order WAPA-137 Rate Order 2009 CRSP Management Center Customer Rates Second Step Presentation from the June 25, 2009, Customer Meeting Handout Materials from the June 25, 2009, Customer Meeting Customer Comment Letters ATEA CREDA Farmington ITCA AMPUA Rate Adjustment Information The second step of WAPA-137 SLCA/IP Firm Power, CRSP Transmission and Ancillary Services rate adjustment. FERC Approval of Rate Order No. WAPA-137 Notice Of Filing for Rate Order No. WAPA-137 Published Final FRN for Rate Order No. WAPA-137 Letter to Customers regarding the published Notice of Extension of Public Process for Rate Order No. WAPA-137 Published Extension of Public Process for Rate Order No. WAPA-137 FRN Follow-up Public Information and Comment Forum Flier WAPA-137 Customer Meetings and Rate Adjustment Schedule

264

Advanced Manufacturing Office: Motor Systems  

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

Motor Systems to Motor Systems to someone by E-mail Share Advanced Manufacturing Office: Motor Systems on Facebook Tweet about Advanced Manufacturing Office: Motor Systems on Twitter Bookmark Advanced Manufacturing Office: Motor Systems on Google Bookmark Advanced Manufacturing Office: Motor Systems on Delicious Rank Advanced Manufacturing Office: Motor Systems on Digg Find More places to share Advanced Manufacturing Office: Motor Systems on AddThis.com... Quick Links Energy Resource Center Technical Publications by Energy System Energy-Efficient Technologies Incentives & Resources by Zip Code Better Plants Superior Energy Performance Contacts Motor Systems Photo of Man Checking Motor Performance Motor-driven equipment accounts for 54% of manufacturing electricity use. Dramatic energy and cost savings can be achieved in motor systems by

265

Power system  

DOE Patents (OSTI)

A power system includes a prime mover, a transmission, and a fluid coupler having a selectively engageable lockup clutch. The fluid coupler may be drivingly connected between the prime mover and the transmission. Additionally, the power system may include a motor/generator drivingly connected to at least one of the prime mover and the transmission. The power-system may also include power-system controls configured to execute a control method. The control method may include selecting one of a plurality of modes of operation of the power system. Additionally, the control method may include controlling the operating state of the lockup clutch dependent upon the mode of operation selected. The control method may also include controlling the operating state of the motor/generator dependent upon the mode of operation selected.

Hickam, Christopher Dale (Glasford, IL)

2008-03-18T23:59:59.000Z

266

Stepping motor controller  

SciTech Connect

A stepping motor is microprocessingly controlled by digital circuitry which monitors the output of a shaft encoder adjustably secured to the stepping motor and generates a subsequent stepping pulse only after the preceding step has occurred and a fixed delay has expired. The fixed delay is variable on a real-time basis to provide for smooth and controlled deceleration.

Bourret, Steven C. (Los Alamos, NM); Swansen, James E. (Los Alamos, NM)

1984-01-01T23:59:59.000Z

267

Stepping motor controller  

DOE Patents (OSTI)

A stepping motor is microprocessor controlled by digital circuitry which monitors the output of a shaft encoder adjustably secured to the stepping motor and generates a subsequent stepping pulse only after the preceding step has occurred and a fixed delay has expired. The fixed delay is variable on a real-time basis to provide for smooth and controlled deceleration.

Bourret, S.C.; Swansen, J.E.

1982-07-02T23:59:59.000Z

268

motor | OpenEI  

Open Energy Info (EERE)

0 0 Varnish cache server Browse Upload data GDR 429 Throttled (bot load) Error 429 Throttled (bot load) Throttled (bot load) Guru Meditation: XID: 2142279950 Varnish cache server motor Dataset Summary Description The data included in this submission is United States Department of Transportation (DOT) data up to 1995. The data includes motor-fuel gallonage taxes 1950-1995, motor-fuel use 1919-1995, private and commercial highway use of special fuels, by state 1949-1995, highway use of gasoline, by state 1949-1995, gasohol sales by state, 1980-1992, and estimated use of gasohol, 1993-1995. The data is presented in .xlsx format. Source DOT Date Released Unknown Date Updated Unknown Keywords DOT Fuel highway motor vehicle Data application/vnd.openxmlformats-officedocument.spreadsheetml.sheet icon Motor-fuel gallonage taxes 1950-1995 (xlsx, 37.3 KiB)

269

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

270

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

271

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

272

Direct Torque Control for Interior Permanent Magnet Synchronous Motors with Respect to Optimal Efficiency  

E-Print Network (OSTI)

Direct Torque Control for Interior Permanent Magnet Synchronous Motors with Respect to Optimal@lea.upb.de, boecker@lea.upb.de URL: http://wwwlea.upb.de Keywords «Interior permanent magnet synchronous motor to their high torque and power per volume ratio, interior permanent magnet synchronous motors (IPMSM

Noé, Reinhold

273

A Precise Open-Loop Torque Control for an Interior Permanent Magnet Synchronous Motor  

E-Print Network (OSTI)

A Precise Open-Loop Torque Control for an Interior Permanent Magnet Synchronous Motor (IPMSM@lea.upb.de Abstract-Interior permanent magnet synchronous motors (IPMSM) are preferentially chosen as traction drives. INTRODUCTION Interior permanent magnet synchronous motors (IPMSM) provide high power and torque densities

Noé, Reinhold

274

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

275

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

276

Control of Surface Mounted Permanent Magnet Motors with Special Application to Fractional-Slot Motors with Concentrated Windings  

SciTech Connect

A 30 pole, 6 kW, and 6000 maximum revolutions per minute (rpm) prototype of the permanent magnet synchronous motor (PMSM) with fractional-slot concentrated windings (FSCW) has been designed, built, and tested at the University of Wisconsin at Madison (UWM). This machine has significantly more inductance than that of regular PMSMs. The prototype was delivered in April 2006 to the Oak Ridge National Laboratory (ORNL) for testing and development of a controller that will achieve maximum efficiency. In advance of the test/control development effort, ORNL has used the PMSM models developed over a number of previous studies to study how steady state performance of high inductance PMSM machines relates to control issues. This report documents the results of this research. The amount of inductance that enables the motor to achieve infinite constant power speed ratio (CPSR) is given by L{sub {infinity}} = E{sub b}/{Omega}{sub b}I{sub R}, where E{sub b} is the root-mean square (rms) magnitude of the line-to-neutral back-electromotive force (emf) at base speed, {Omega}{sub b} is the base speed in electrical radians per second, and I{sub R} is the rms current rating of the motor windings. The prototype machine that was delivered to ORNL has about 1.5 times as much inductance as a typical PMSM with distributed integral slot windings. The inventors of the FSCW method, who designed the prototype machine, remarked that they were 'too successful' in incorporating inductance into their machine and that steps would be taken to modify the design methodology to reduce the inductance to the optimum value. This study shows a significant advantage of having the higher inductance rather than the optimal value because it enables the motor to develop the required power at lower current thereby reducing motor and inverter losses and improving efficiency. The main problem found with high inductance machines driven by a conventional phase advance (CPA) method is that the motor current at high speed depends solely on machine parameters and is virtually independent of the load level and the direct current (dc) supply voltage. Thus, the motor current is virtually the same at no load as at full load resulting in poor efficiency at less than full load conditions. While an inductance higher than the value cited above is warranted, it still does not ensure that the motor current is proportional to load; consequently, the problem of low efficiency at high speed and partial load is not resolved but is only mitigated. A common definition of 'base speed' is the speed at which the voltage applied to the motor armature is equal to the magnitude of the back-emf. The results in this study indicate that the dc supply voltage should be adequate to drive rated current into the motor winding at the specified base speed. At a minimum this requires sufficient voltage to overcome not only the back-emf but also the voltage drop across the internal impedance of the machine. For a high inductance PMSM, the internal impedance at base speed can be considerable and substantial additional voltage is required to overcome the internal voltage drop. It is further shown that even more voltage than the minimum required for injecting rated current at base speed can be beneficial by allowing the required power to be developed at lower current, which reduces losses in the motor and inverter components. Further, it is shown that the current is minimized at a unique speed; consequently, there may be room for optimization if the drive spends a substantial amount of its operating life at a certain speed (for example 60 mph). In this study, fundamental frequency phasor models are developed for a synchronous PMSM and the control systems that drive them is CPA. The models were compared with detailed simulations to show their validity. The result was used to design a traction drive control system with optimized efficiency to drive the fractional-slot motor with concentrated windings. The goal is to meet or exceed the FreedomCAR inverter cost and performance targets.

McKeever, John W [ORNL; Patil, Niranjan [University of Tennessee, Knoxville (UTK); Lawler, Jack [ORNL

2007-07-01T23:59:59.000Z

277

Control of Surface Mounted Permanent Magnet Motors with Special Application to Fractional-Slot Motors with Concentrated Windings  

SciTech Connect

A 30 pole, 6 kW, and 6000 maximum revolutions per minute (rpm) prototype of the permanent magnet synchronous motor (PMSM) with fractional-slot concentrated windings (FSCW) has been designed, built, and tested at the University of Wisconsin at Madison (UWM). This machine has significantly more inductance than that of regular PMSMs. The prototype was delivered in April 2006 to the Oak Ridge National Laboratory (ORNL) for testing and development of a controller that will achieve maximum efficiency. In advance of the test/control development effort, ORNL has used the PMSM models developed over a number of previous studies to study how steady state performance of high inductance PMSM machines relates to control issues. This report documents the results of this research. The amount of inductance that enables the motor to achieve infinite constant power speed ratio (CPSR) is given by L{sub {infinity}} = E{sub b}/{Omega}{sub b}I{sub R}, where E{sub b} is the root-mean square (rms) magnitude of the line-to-neutral back-electromotive force (emf) at base speed, {Omega}{sub b} is the base speed in electrical radians per second, and I{sub R} is the rms current rating of the motor windings. The prototype machine that was delivered to ORNL has about 1.5 times as much inductance as a typical PMSM with distributed integral slot windings. The inventors of the FSCW method, who designed the prototype machine, remarked that they were 'too successful' in incorporating inductance into their machine and that steps would be taken to modify the design methodology to reduce the inductance to the optimum value. This study shows a significant advantage of having the higher inductance rather than the optimal value because it enables the motor to develop the required power at lower current thereby reducing motor and inverter losses and improving efficiency. The main problem found with high inductance machines driven by a conventional phase advance (CPA) method is that the motor current at high speed depends solely on machine parameters and is virtually independent of the load level and the direct current (dc) supply voltage. Thus, the motor current is virtually the same at no load as at full load resulting in poor efficiency at less than full load conditions. While an inductance higher than the value cited above is warranted, it still does not ensure that the motor current is proportional to load; consequently, the problem of low efficiency at high speed and partial load is not resolved but is only mitigated. A common definition of 'base speed' is the speed at which the voltage applied to the motor armature is equal to the magnitude of the back-emf. The results in this study indicate that the dc supply voltage should be adequate to drive rated current into the motor winding at the specified base speed. At a minimum this requires sufficient voltage to overcome not only the back-emf but also the voltage drop across the internal impedance of the machine. For a high inductance PMSM, the internal impedance at base speed can be considerable and substantial additional voltage is required to overcome the internal voltage drop. It is further shown that even more voltage than the minimum required for injecting rated current at base speed can be beneficial by allowing the required power to be developed at lower current, which reduces losses in the motor and inverter components. Further, it is shown that the current is minimized at a unique speed; consequently, there may be room for optimization if the drive spends a substantial amount of its operating life at a certain speed (for example 60 mph). In this study, fundamental frequency phasor models are developed for a synchronous PMSM and the control systems that drive them is CPA. The models were compared with detailed simulations to show their validity. The result was used to design a traction drive control system with optimized efficiency to drive the fractional-slot motor with concentrated windings. The goal is to meet or exceed the FreedomCAR inverter cost and performance targets.

McKeever, John W [ORNL; Patil, Niranjan [University of Tennessee, Knoxville (UTK); Lawler, Jack [ORNL

2007-07-01T23:59:59.000Z

278

Genetics of motor neuron disease  

Science Conference Proceedings (OSTI)

The number of genes associated with motor neuron degen- eration has increased ... Motor neurons are affected in a large number of neurologic diseases

279

Motor Vehicle Parts Compliance Requirements  

Science Conference Proceedings (OSTI)

... The OVSC compliance testing program is a strong incentive for manufacturers of motor vehicles and items of motor vehicle equipment to ...

2012-09-24T23:59:59.000Z

280

Aurica Motors | Open Energy Information  

Open Energy Info (EERE)

Product California-based Aurica Motors is planning to develop and manufacture an electric vehicle at a former Toyota plant in the state. References Aurica Motors1...

Note: This page contains sample records for the topic "motor power rating" 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

Pacing plant motors for energy savings  

SciTech Connect

Electronic adjustable-speed drives (ASDs) allow power plant auxiliary motors to work only as hard as they need to. In some cases, ASDs can reduce energy requirements by 30-50%, while minimizing wear and tear. Electronic ASDs' advanced hardware and software make them more compact than their mechanical counterparts, so retrofits are a relatively simple undertaking. Electric Power Research Institute studies include development and testing on ASDs retrofits and seeking new applications. 2 references, 6 figures.

Lihach, N.; Ferraro, R.

1984-03-01T23:59:59.000Z

282

Table 2.8 Motor Vehicle Mileage, Fuel Consumption, and Fuel ...  

U.S. Energy Information Administration (EIA)

Greenhouse gas data, voluntary report- ing, electric power plant emissions. ... Table 2.8 Motor Vehicle Mileage, Fuel Consumption, and Fuel Economy, 1949-2010:

283

Microsoft PowerPoint - srnl_24x36vert Nov2010 EM tech exchange melt rate model choi.ppt  

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

Enhancement of DWPF Melt Rate Model (WP 4.2.3) Enhancement of DWPF Melt Rate Model (WP 4.2.3) A.S. Choi, D. H. Miller, Engineering Process Development D. M. Immel, Imaging and Radiation Systems Free energy output is re-arranged into various functional groups based on literature data on aluminoborosilicate glass structural units Methodology: Objective: Develop a predictive tool for the impact of feed chemistry on relative melt rate of HLW glasses. Input Semi-empirical 4-Stage DWPF Cold Cap Model Output Phase Equilibria & Speciation of Melt, Intermediate Condensed Phases, Calcine Gases and Their Free Energies Feed Chemistry NIST Free Energy Database for Complex Liquids Melt Rate Furnace (MRF) Experiments Derive an empirical correlation of relative melt rates using free energy functional groups. X-Ray Imaging &

284

The Effects of Stator Compliance, Backs Steps, Temperature, and Clockwise Rotation on the Torque-Speed Curve of Bacterial Flagellar Motor  

E-Print Network (OSTI)

Rotation of a single bacterial flagellar motor is powered by multiple stators tethered to the cell wall. In a "power-stroke" model the observed independence of the speed at low load on the number of stators is explained by a torque-dependent stepping mechanism independent of the strength of the stator tethering spring. On the other hand, in models that depend solely on the stator spring to explain the observed behavior, exceedingly small stator spring constants are required. To study the dynamics of the motor driven by external forces (such as those exerted by an optical tweezer), back-stepping is introduced when stators are driven far out of equilibrium. Our model with back-stepping reproduces the observed absence of a barrier to backward rotation, as well the behaviors in the high-speed negative-torque regime. Recently measured temperature dependence of the motor speed near zero load (Yuan & Berg 2010 Biophys J) is explained quantitatively by the thermally activated stepping rates in our model. Finally, we suggest that the general mechanical properties of all molecular motors (linear and rotary), characterized by their force(torque)-speed curve, can be determined by their power-stroke potentials and the dependence of the stepping rates on the mechanical state of the motor (force or speed). The torque-speed curve for the clockwise rotating flagellar motor has been observed for the first time recently (Yuan et al. 2010 PNAS). Its quasi-linear behavior is quantitatively reproduced by our model. In particular, we show that concave and convex shapes of the torque-speed curve can be achieved by changing the interaction potential from linear to quadratic form. We also show that reversing the stepping rate dependence on force (torque) can lead to non-monotonicity in the speed-load dependency.

Giovanni Meacci; Ganhui Lan; Yuhai Tu

2010-08-13T23:59:59.000Z

285

Advanced Ultra-High Speed Motor for Drilling  

Science Conference Proceedings (OSTI)

Three (3) designs have been made for two sizes, 6.91 cm (2.72 inch) and 4.29 cm (1.69 inch) outer diameters, of a patented inverted configured Permanent Magnet Synchronous Machines (PMSM) electric motor specifically for drilling at ultra-high rotational speeds (10,000 rpm) and that can utilize advanced drilling methods. Benefits of these motors are stackable power sections, full control (speed and direction) of downhole motors, flow hydraulics independent of motor operation, application of advanced drilling methods (water jetting and abrasive slurry jetting), and the ability of signal/power electric wires through motor(s). Key features of the final designed motors are: fixed non-rotating shaft with stator coils attached; rotating housing with permanent magnet (PM) rotor attached; bit attached to rotating housing; internal channel(s) in a nonrotating shaft; electric components that are hydrostatically isolated from high internal pressure circulating fluids ('muds') by static metal to metal seals; liquid filled motor with smoothed features for minimized turbulence in the motor during operation; and new inverted coated metal-metal hydrodynamic bearings and seals. PMSM, Induction and Switched Reluctance Machines (SRM), all pulse modulated, were considered, but PMSM were determined to provide the highest power density for the shortest motors. Both radial and axial electric PMSM driven motors were designed with axial designs deemed more rugged for ultra-high speed, drilling applications. The 6.91 cm (2.72 inch) OD axial inverted motor can generate 4.18KW (5.61 Hp) power at 10,000 rpm with a 4 Nm (2.95 ft-lbs) of torque for every 30.48 cm (12 inches) of power section. The 6.91 cm (2.72 inch) OD radial inverted motor can generate 5.03 KW (6.74 Hp) with 4.8 Nm (3.54 ft-lb) torque at 10,000 rpm for every 30.48 cm (12 inches) of power section. The 4.29 cm (1.69 inch) OD radial inverted motor can generate 2.56 KW (3.43 Hp) power with 2.44 Nm (1.8 ft-lb) torque at full speed 10,000 rpm for every 30.48 cm (12 inches) of power section. Operating conditions are 300 voltage AC at the motor leads. Power voltage losses in the cables/wirelines to the motor(s) are expected to be about 10% for 5000 feet carrying 2 amperes. Higher voltages and better insulators can lower these losses and carry more amperes. Cutting elements for such high tip velocities are currently not available, consequently these motors will not be built at this time. However, 7.62 cm (3 inch) OD, low speed, PMSM radial electric motors based on this project design are being built under a 2006 Oklahoma Center for the Advancement of Science and Technology 'proof of concept' grant.

Impact Technologies LLC; University of Texas at Arlington

2007-03-31T23:59:59.000Z

286

Method and apparatus for monitoring the rotating frequency of de-energized induction motors  

DOE Patents (OSTI)

The rotational speed of a coasting induction motor is measured by sensing e residual electrical voltages at the power terminals of the motor, thus eliminating the need for conventional tachometer equipment, additional mechanical components or modifications to the induction motor itself. The power terminal voltage signal is detected and transformed into a DC voltage proportional to the frequency of the signal. This DC voltage can be input to the control system of a variable frequency motor controller to regulate the output characteristics thereof relative to the speed of the coasting motor.

Mikesell, Harvey E. (McMurray, PA); Lucy, Eric (Murrysville, PA)

1998-01-01T23:59:59.000Z

287

Method and apparatus for monitoring the rotating frequency of de-energized induction motors  

DOE Patents (OSTI)

The rotational speed of a coasting induction motor is measured by sensing e residual electrical voltages at the power terminals of the motor, thus eliminating the need for conventional tachometer equipment, additional mechanical components or modifications to the induction motor itself. The power terminal voltage signal is detected and transformed into a DC voltage proportional to the frequency of the signal. This DC voltage can be input to the control system of a variable frequency motor controller to regulate the output characteristics thereof relative to the speed of the coasting motor. 6 figs.

Mikesell, H.E.; Lucy, E.

1998-02-03T23:59:59.000Z

288

Amorphous silicon cell array powered solar tracking apparatus  

DOE Patents (OSTI)

An array of an even number of amorphous silicon solar cells are serially connected between first and second terminals of opposite polarity. The terminals are connected to one input terminal of a DC motor whose other input terminal is connected to the mid-cell of the serial array. Vane elements are adjacent the end cells to selectively shadow one or the other of the end cells when the array is oriented from a desired attitude relative to the sun. The shadowing of one cell of a group of cells on one side of the mid-cell reduces the power of that group substantially so that full power from the group of cells on the other side of the mid-cell drives the motor to reorient the array to the desired attitude. The cell groups each have a full power output at the power rating of the motor. When the array is at the desired attitude the power output of the two groups of cells balances due to their opposite polarity so that the motor remains unpowered.

Hanak, Joseph J. (Lawrenceville, NJ)

1985-01-01T23:59:59.000Z

289

Summer 2003 Motor Gasoline Outlook  

U.S. Energy Information Administration (EIA)

Summer 2003 Motor Gasoline Outlook ... State gasoline taxes ... that occurred between spring 1999 and fall 2001, ...

290

MOTOR POOL RESERVATIONS Reservation Number:_______________  

E-Print Network (OSTI)

MOTOR POOL RESERVATIONS Reservation Number:_______________ Evanston campus: Chicago campus: 2020: 312/503-9243 E-mail: motor-pool@northwestern.edu E-mail: motor-pool@northwestern.edu Hours: 8:00 a reservations require the "Organization Authorization for University Vehicles" form to be faxed to Motor Pool

Shull, Kenneth R.

291

Ford Motor Company  

E-Print Network (OSTI)

All statements, findings, and conclusions in this report are those of the authors and do not necessarily reflect those of the Global Interdependence Center, Ford Motor Company, or the Center for Automotive Research. TABLE OF CONTENTS Acknowledgements......................................................................................................................... iv

Ellen Hughes-cromwick; Joshua Cregger

2013-01-01T23:59:59.000Z

292

Retail Motor Gasoline Prices*  

Gasoline and Diesel Fuel Update (EIA)

motor gasoline is projected to be about 1.38 per gallon. As was the case with heating oil, last year's peak average gasoline price, at 1.633 per gallon in June, was the...

293

Markov Process of Muscle Motors  

E-Print Network (OSTI)

We study a Markov random process describing a muscle molecular motor behavior. Every motor is either bound up with a thin filament or unbound. In the bound state the motor creates a force proportional to its displacement from the neutral position. In both states the motor spend an exponential time depending on the state. The thin filament moves at its velocity proportional to average of all displacements of all motors. We assume that the time which a motor stays at the bound state does not depend on its displacement. Then one can find an exact solution of a non-linear equation appearing in the limit of infinite number of the motors.

Yu. Kondratiev; E. Pechersky; S. Pirogov

2007-06-20T23:59:59.000Z

294

High Temperature, Buried Permanent Magnet, Brushless DC Motor  

E-Print Network (OSTI)

A high temperature magnetic bearing system using high temperature permanent magnets from Electron Energy Corporation (EEC) is under development. The system consists of two radial bearings, one thrust bearing, two radial catcher bearings and one motor. The purpose of this research is to develop one of the critical components of the system, namely, the High Temperature Permanent Magnet motor. A novel High Temperature Permanent Magnet (HTPM) Brushless DC(BLDC) motor capable of operating at 1000 degrees F (538 degrees C) is designed. HTPMs developed at Electron Energy Corporation are buried into the rotor. The high temperature motor is designed to produce 5.1kw of power at a top running speed of 20000 rpm. The numerical values of the motor voltage, power and torque output are predicted from calculations of the nonlinear finite element model of the motor. The motor stator is wound, potted, cured and high potential tested at 1000 degrees F. A servo amplifier from Advanced Motion Control is used to drive the high temperature motor. High temperature displacement sensors are set up for sensing the rotor position to form a closed loop motion control. However, the noise problem of the high temperature sensors causes a failure of this approach. An open loop approach is then developed and this approach succeeds in spinning the rotor with the capability of self-starting. The status of the full system assembling is introduced. Some other components of the system are briefly presented.

Zhang, Zhengxin

2010-08-01T23:59:59.000Z

295

3M's Motor Challenge Showcase Demonstration Project  

E-Print Network (OSTI)

In January 1994, 3M began the task of optimizing the electric motor systems at 3M Center, a 26 building, 7 million square foot corporate campus. A cross-functional, cross-company team was established which included four 3M employees representing two different departments within 3M, an engineer specializing in demand side management programs from Northern States Power Company, and a sales engineer from General Electric Supply Company. The team was later joined by an engineering specialist from Landis & Staefa, Inc., a building automation controls supplier. The team began the task of identifying the projects that could save energy and provide a reasonable return on 3M's investment on a building by building approach. As surveys were completed, proposals were prepared and presented to management requesting funding. The team continued the process of identifying projects in remaining buildings and took on the responsibility of designing, contracting and implementing projects as funding was approved for those already studied. Follow-up measurements to ascertain that the savings predicted was actually achieved are done before project close-out. This project was submitted and accepted as a Motor Challenge Showcase Demonstration Project. The Motor Challenge is a U.S. Department of Energy initiative to promote the efficient use of energy in electric motor systems. Showcase Demonstration Projects are used to exemplify the benefits that motor system optimization can provide. This Showcase Project is different from most as it emphasizes the process that was developed to carry out a project of this magnitude rather than any single specific technologies or applications. The team has completed the project at 3M Center. Measured savings are $823,000 per year. This paper will discuss the Motor Challenge Showcase Demonstration project that was completed at 3M Center, the motor systems survey methodology the team developed, analysis tools and techniques and the results that have been attained.

Schultz, S. C.

1998-04-01T23:59:59.000Z

296

3M's Motor Challenge Showcase Demonstration Project  

E-Print Network (OSTI)

In January 1994, 3M began the task of optimizing the electric motor systems at 3M Center, a 26 building, 7 million square foot corporate campus. A cross-functional, cross-company team was established which included four 3M employees representing two different departments within 3M, an engineer specializing in demand side management programs from Northern States Power Company, and a sales engineer from General Electric Supply Company. The team was later joined by an engineering specialist from Landis & Gyr, Inc., a building automation controls supplier. The team began the task of identifying the projects that could save energy and provide a reasonable return on 3M's investment on a building by building approach. As surveys were completed, proposals were prepared and presented to management requesting funding. The team continued the process of identifying projects in remaining buildings and took on the responsibility of designing, contracting and implementing projects as funding was approved for those already studied. Follow-up measurements to ascertain that the savings predicted was actually achieved are done before project close-out. This project was submitted and has been accepted as a Motor Challenge Showcase Demonstration Project. The Motor Challenge is a U. S. Department of Energy initiative to promote the efficient use of energy in electric motor systems. Showcase Demonstration Projects are used to exemplify the benefits that motor system optimization can provide. This Showcase Project is different from most as it emphasizes the process that was developed to carry out a project of this magnitude rather than any single specific technologies or applications. The team has nearly completed the studies at 3M Center and is well into the implementation phase with six buildings being complete. Savings identified to date are approximately $810,000 per year. This paper will discuss the Motor Challenge Showcase Demonstration project currently underway at 3M Center, the motor systems survey methodology the team developed, analysis tools and techniques and the results that have been attained.

Schultz, S. C.

1996-04-01T23:59:59.000Z

297

Solar-powered aroma generator  

SciTech Connect

In combination with a switch-controlled electric light bulb having a threaded plug and a threaded socket disposed in a room which is also subject to natural ambient light, a switchless aroma generator is installed in the room which is automatically activated only when the electric light bulb is switched on. The activated generator functions to discharge an air current into the room which conveys an aromatic vapor to modify the atmosphere. The generator described in this patent consists of: A.) an air-permeable cartridge containing an aroma supply which is exuded into the atmosphere at a relatively rapid rate as an air current is forced through the cartridge; B.) a fan driven by a low-voltage, direct-current motor having predetermined power requirements, the fan being arranged to force an air current through the cartridge; C.) a housing incorporating the cartridge and the motordriven fan, the housing containing an apparatus for mounting it on a wall in the room; and D.) a solar cell assembly producing a direct-current output placed in close proximity to the bulb in the room and irradiated when the bulb is switched on. The assembly is connected to the motor to supply power, the electrical relationship of the assembly to the motor being such that the cell output is sufficient to power the motor only when the bulb is switched on to irradiate the assembly, and is insufficient when the bulb is switched off. The cell output then depends on ambient light in the room, and the operation of the generator is coordinated with that of the bulb despite the absence of a wired connection between and an aroma is generated only when the bulb is switched on.

Spector, D.

1986-02-04T23:59:59.000Z

298

Definition: Rating | Open Energy Information  

Open Energy Info (EERE)

power, such as transformers, or transport it from one location to another, such as transmission lines, the power rating almost always refers to the maximum power flow...

299

Modeling Reluctance-Assisted PM Motors  

SciTech Connect

This report contains a derivation of the fundamental equations used to calculate the base speed, torque delivery, and power output of a reluctance-assisted PM motor which has a saliency ratio greater than 1 as a function of its terminal voltage, current, voltage-phase angle, and current-phase angle. The equations are applied to model Motor X using symbolically-oriented methods with the computer tool Mathematica to determine: (1) the values of current-phase angle and voltage-phase angle that are uniquely determined once a base speed has been selected; (2) the attainable current in the voltage-limited region above base speed as a function of terminal voltage, speed, and current-phase angle; (3) the attainable current in the voltage-limited region above base speed as a function of terminal voltage, speed, and voltage-phase angle; (4) the maximum-power output in the voltage-limited region above base speed as a function of speed; (5) the optimal voltage-phase angle in the voltage-limited region above base speed required to obtain maximum-power output; (6) the maximum-power speed curve which was linear from rest to base speed in the current limited region below base speed; (7) the current angle as a function of saliency ratio in the current-limited region below base speed; and (8) the torque as a function of saliency ratio which is almost linear in the current-limited region below base speed. The equations were applied to model Motor X using numerically-oriented methods with the computer tool LabVIEW. The equations were solved iteratively to find optimal current and voltage angles that yield maximum power and maximum efficiency from rest through the current-limited region to base speed and then through the voltage-limited region to high-rotational speeds. Currents, voltages, and reluctance factors were all calculated and external loops were employed to perform additional optimization with respect to PM pitch angle (magnet fraction) and with respect to magnet strength. The conclusion was that the optimal-magnet fraction for Motor X is 0.72 which corresponds to a PM pitch angle of 130{sup o}, a value close to the maximum-saliency ratio in a plot of saliency ratio versus PM pitch angle. Further, the strength of Motor X magnets may be lowered to 80% of full strength without significantly impacting motor performance for PM pitch angles between the peak saliency (130{sup o}) and peak-characteristic current (160{sup o}). It is recommended that future research involve maximizing a driving-cycle-weighted efficiency based on the Federal Urban Driving Cycle and the Federal Highway Driving Cycle as criteria for selecting the final optimal-PM fraction and magnet strength for this inset PM motor. Results of this study indicate that the reduction in PM torque due to reduced-magnet fraction will be more than compensated by the reluctance torque resulting from the higher saliency ratio. It seems likely that the best overall performance will require saliency; consequently, we think the best motor will be a reluctance-assisted PM motor. This should be explored for use with other types of PM motors, such as fractional-slot motors with concentrated windings.

Otaduy, P.J.

2006-01-13T23:59:59.000Z

300

Rate schedule  

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

Firm Power Service Provided by Rate/Charges Firm Power Service Provided by Rate/Charges Rate/Charges Effective Through (or until superceded) Firm Sales (SLIP-F9) Composite Rate SLIP 29.62 mills/kWh 9/30/2015 Demand Charge SLIP $5.18/kW-month 9/30/2015 Energy Charge SLIP 12.19 mills/kWh 9/30/2015 Cost Recovery Charge (CRC) SLIP 0 mills/kWh 9/30/2015 Transmission Service Provided by Current Rates effective10/12 - 9/15 (or until superceded) Rate Schedule Effective Through Firm Point-to-Point Transmission (SP-PTP7) CRSP $1.14 per kW-month $13.69/kW-year $0.00156/kW-hour $0.04/kW-day $0.26/kW-week 10/1/2008-9/30/2015 Network Integration Transmission (SP-NW3) CRSP see rate schedule 10/1/2008-9/30/2015 Non-Firm Point-to-Point Transmission (SP-NFT6) CRSP see rate schedule 10/1/2008-9/30/2015 Ancillary Services Provided by Rate Rate Schedule

Note: This page contains sample records for the topic "motor power rating" 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.


301

Dynein Motor Domain Shows Ring-Shaped Motor, Buttress  

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

Dynein Motor Domain Shows Ring-Shaped Motor, Buttress Print Dynein Motor Domain Shows Ring-Shaped Motor, Buttress Print Movement is fundamental to life. It takes place even at the cellular level where cargo is continually being transported by motor proteins. These tiny machines convert the energy gained from hydrolysing ATP into a series of small conformational changes that allow them to literally "walk" along microscopic tracks. Motor proteins (in the kinesin and myosin families) have been extensively studied by x-ray crystallography, but until recently there was little molecular structural information for dyneins, another type of motor protein. A group from the University of California, San Francisco, working at ALS Beamline 8.3.1 has reported the 6-Å-resolution structure of the motor domain of dynein in yeast. It reveals details of the ring-shaped motor as well as a new, unanticipated feature called the buttress that may play an important role in dynein's mechanical cycle.

302

Dynein Motor Domain Shows Ring-Shaped Motor, Buttress  

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

Dynein Motor Domain Shows Ring-Shaped Motor, Buttress Print Dynein Motor Domain Shows Ring-Shaped Motor, Buttress Print Movement is fundamental to life. It takes place even at the cellular level where cargo is continually being transported by motor proteins. These tiny machines convert the energy gained from hydrolysing ATP into a series of small conformational changes that allow them to literally "walk" along microscopic tracks. Motor proteins (in the kinesin and myosin families) have been extensively studied by x-ray crystallography, but until recently there was little molecular structural information for dyneins, another type of motor protein. A group from the University of California, San Francisco, working at ALS Beamline 8.3.1 has reported the 6-Å-resolution structure of the motor domain of dynein in yeast. It reveals details of the ring-shaped motor as well as a new, unanticipated feature called the buttress that may play an important role in dynein's mechanical cycle.

303

Dynein Motor Domain Shows Ring-Shaped Motor, Buttress  

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

Dynein Motor Domain Shows Ring-Shaped Motor, Buttress Print Dynein Motor Domain Shows Ring-Shaped Motor, Buttress Print Movement is fundamental to life. It takes place even at the cellular level where cargo is continually being transported by motor proteins. These tiny machines convert the energy gained from hydrolysing ATP into a series of small conformational changes that allow them to literally "walk" along microscopic tracks. Motor proteins (in the kinesin and myosin families) have been extensively studied by x-ray crystallography, but until recently there was little molecular structural information for dyneins, another type of motor protein. A group from the University of California, San Francisco, working at ALS Beamline 8.3.1 has reported the 6-Å-resolution structure of the motor domain of dynein in yeast. It reveals details of the ring-shaped motor as well as a new, unanticipated feature called the buttress that may play an important role in dynein's mechanical cycle.

304

Dynein Motor Domain Shows Ring-Shaped Motor, Buttress  

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

Dynein Motor Domain Shows Ring-Shaped Motor, Buttress Print Dynein Motor Domain Shows Ring-Shaped Motor, Buttress Print Movement is fundamental to life. It takes place even at the cellular level where cargo is continually being transported by motor proteins. These tiny machines convert the energy gained from hydrolysing ATP into a series of small conformational changes that allow them to literally "walk" along microscopic tracks. Motor proteins (in the kinesin and myosin families) have been extensively studied by x-ray crystallography, but until recently there was little molecular structural information for dyneins, another type of motor protein. A group from the University of California, San Francisco, working at ALS Beamline 8.3.1 has reported the 6-Å-resolution structure of the motor domain of dynein in yeast. It reveals details of the ring-shaped motor as well as a new, unanticipated feature called the buttress that may play an important role in dynein's mechanical cycle.

305

Electric machine for hybrid motor vehicle  

DOE Patents (OSTI)

A power system for a motor vehicle having an internal combustion engine and an electric machine is disclosed. The electric machine has a stator, a permanent magnet rotor, an uncluttered rotor spaced from the permanent magnet rotor, and at least one secondary core assembly. The power system also has a gearing arrangement for coupling the internal combustion engine to wheels on the vehicle thereby providing a means for the electric machine to both power assist and brake in relation to the output of the internal combustion engine.

Hsu, John Sheungchun (Oak Ridge, TN)

2007-09-18T23:59:59.000Z

306

Natural Gas Conveyance and Rates  

Reports and Publications (EIA)

Natural gas transportation market; Competition vs. market power; Rate structures Cost-of-service Performance based rates

Information Center

2001-02-01T23:59:59.000Z

307

Ontario Hydro Motor Efficiency Study  

E-Print Network (OSTI)

Electric motors consume more than one-half of the electrical energy produced by Ontario Hydro. In the residential sector, the major motor load is for refrigerators and freezers while packaged equipment dominate the motor load in the commercial market. However, this paper concentrates on the industrial market since 76% of this market's load is motors. The poly phase integral horsepower motor is the "workhorse" of industry. The efficiency of the standard induction motor can be improved. The new "high efficiency" motor is described and the operating cost is compared to the standard motor. Payback for high efficiency motors is found to be about one year for continuous duty applications. Specific instructions are presented for use in industry.

Dautovich, D. R.

1980-01-01T23:59:59.000Z

308

Energetics and efficiency of a molecular motor model  

E-Print Network (OSTI)

The energetics and efficiency of a linear molecular motor model proposed by Mogilner et al. (Phys. Lett. 237, 297 (1998)) is analyzed from an analytical point of view. The model which is based on protein friction with a track is described by coupled Langevin equations for the motion in combination with coupled master equations for the ATP hydrolysis. Here the energetics and efficiency of the motor is addressed using a many body scheme with focus on the efficiency at maximum power (EMP). It is found that the EMP is reduced from about 10 pct in a heuristic description of the motor to about 1 per mille when incorporating the full motor dynamics, owing to the strong dissipation associated with the motor action.

Fogedby, Hans C

2013-01-01T23:59:59.000Z

309

A Quantitative EMG Assessment of Motor Unit Recruitment in Patients with Ulnar Neuropathy.  

E-Print Network (OSTI)

??The aim of the current study was to assess the test retest reliability of motor unit firing rates with the use of decomposition based (more)

Ryan, Kayla N

2013-01-01T23:59:59.000Z

310

Drilling motor deviation tool  

Science Conference Proceedings (OSTI)

An extension for a down hole drilling motor is described, which adapts the motor for selective configuration for straight hole drilling or directional drilling, selectively. It consists of: an elongated generally tubular body, adapted at a first end to rigidly attach to the lower end of a down hole drilling motor housing, the body having an opening extending along the general centerline of the body; fluid channel means situated in the opening to conduct drilling fluid from the motor fluid output means to a downwardly continuing drill string element; output shaft means situated in the body and extending from a second end of the body, the output shaft adapted at the extended extreme for attachment to a downwardly continuing drill string element; selector valve means situated in the body, operatively associated with drilling fluid channels in the body, responsive to drilling fluid flow to produce a first output signal in response to fluid flow manipulations having a first characteristic and to produce a second output signal in response to fluid flow manipulations having a second characteristic; and driveshaft connector means in the opening, operatively associated with the output shaft of the motor and the output shaft means to connect the two for sympathetic rotation.

Falgout, T.E.; Schoeffler, W.N.

1989-03-14T23:59:59.000Z

311

Trends in motor gasolines: 1942-1981  

Science Conference Proceedings (OSTI)

Trends in motor gasolines for the years of 1942 through 1981 have been evaluated based upon data contained in surveys that have been prepared and published by the Bartlesville Energy Technology Center (BETC). These surveys have been published twice annually since 1935 describing the properties of motor gasolines from throughout the country. The surveys have been conducted in cooperation with the American Petroleum Institute (API) since 1948. Various companies from throughout the country obtain samples from retail outlets, analyze the samples by the American Society for Testing and Materials (ASTM) procedures, and report data to the Bartlesville center for compilation, tabulation, calculation, analysis and publication. A typical motor gasoline report covers 2400 samples from service stations throughout the country representing some 48 companies that manufacture and supply gasoline. The reports include trend charts, octane plots, and tables of test results from about a dozen different tests. From these data in 77 semiannual surveys, a summary report has thus been assembled that shows trends in motor gasolines throughout the entire era of winter 1942 to 1943 to the present. Trends of physical properties including octane numbers, antiknock ratings, distillation temperatures, Reid vapor pressure, sulfur and lead content are tabulated, plotted and discussed in the current report. Also included are trend effects of technological advances and the interactions of engine design, societal and political events and prices upon motor gasoline evolution during the 40 year period.

Shelton, E M; Whisman, M L; Woodward, P W

1982-06-01T23:59:59.000Z

312

Sensory-Motor Integration and Control  

E-Print Network (OSTI)

spinal interneurons during motor pattern generation inStep, Swim, and Scratch Motor Patterns in the Turtle. JStep, Swim, and Scratch Motor Patterns in the Turtle. J

Welch, Dan Bruce

2011-01-01T23:59:59.000Z

313

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

314

The MotorMaster+ Software Tool  

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

motors.html MotorMaster+ also provides technical data that can assist with the optimization of drive systems, motor purchasing, and energy accounting, as well as energy...

315

Brushless Motor Controller Report Spring 2010  

E-Print Network (OSTI)

Brushless Motor Controller Report Spring 2010 May 15, 2010 Brian Clementi MAE of 2010 322 Bogert ...................................................................................................... 5 A. Motor Description...................................................................................................... 5 B. The Motor Controller Board

Ruina, Andy L.

316

Commercial Motor Vehicle Brake-Related Research  

E-Print Network (OSTI)

Commercial Motor Vehicle Brake-Related Research Commercial Motor Vehicle Roadside Technology Corridor Safety Technology Showcase October 14, 2010 Commercial Motor Vehicle Roadside Technology Corridor

317

Advanced Manufacturing Office: MotorMaster+ International  

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

special or definite purpose motors. To quickly determine the annual energy and dollar savings of a NEMA Premium efficiency or EFF1 motor over a lower efficiency motor...

318

Design of a low-mass high-torque brushless motor for application in quadruped robotics  

E-Print Network (OSTI)

The Biomimetic Robotics Group is attempting to build the fastest quadruped robot powered by electromagnetic means. The limitations in achieving this goal are the torque produced from motors used to power the robot, as well ...

Farve, Niaja Nichole

2012-01-01T23:59:59.000Z

319

Bent shaft motor  

DOE Patents (OSTI)

A nonelectromagnetic motor comprising a base, a bent shaft which is rotable relative to the base wherein the bent shaft comprises a straight portion aligned with a main axis and an offset portion that is offset with respect to the main axis; and a drive means for driving the offset portion of the bent shaft along a generally circular path in a plane perpendicular to the main axis to rotate the bent shaft. The bent shaft and drive means for driving the bent shaft can be selected from piezoelectric, magnetostrictive, rheological and shape memory alloys. The drive means of the nonelectromagnetic motor can additionally comprise a shell which shell surrounds and houses the bent shaft and precesses or gyrates which in turn causes the bent drive shaft to rotate. The nonelectromagnetic motor does not rely on friction for the application of torque upon a rotor.

Benavides, Gilbert L. (Albuquerque, NM)

1998-01-01T23:59:59.000Z

320

Dynein Motor Domain Shows Ring-Shaped Motor, Buttress  

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

Dynein Motor Domain Shows Ring-Shaped Motor, Buttress Print Movement is fundamental to life. It takes place even at the cellular level where cargo is continually being transported...

Note: This page contains sample records for the topic "motor power rating" 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

Motor current signature analysis method for diagnosing motor operated devices  

DOE Patents (OSTI)

A motor current noise signature analysis method and apparatus for remotely monitoring the operating characteristics of an electric motor-operated device such as a motor-operated valve. Frequency domain signal analysis techniques are applied to a conditioned motor current signal to distinctly identify various operating parameters of the motor driven device from the motor current signature. The signature may be recorded and compared with subsequent signatures to detect operating abnormalities and degradation of the device. This diagnostic method does not require special equipment to be installed on the motor-operated device, and the current sensing may be performed at remote control locations, e.g., where the motor-operated devices are used in accessible or hostile environments.

Haynes, Howard D. (Kingston, TN); Eissenberg, David M. (Oak Ridge, TN)

1990-01-01T23:59:59.000Z

322

Design and prototyping methods for brushless motors and motor control  

E-Print Network (OSTI)

In this report, simple, low-cost design and prototyping methods for custom brushless permanent magnet synchronous motors are explored. Three case-study motors are used to develop, illustrate and validate the methods. Two ...

Colton, Shane W. (Shane William)

2010-01-01T23:59:59.000Z

323

Corona and Motor Voltage Interim Report  

SciTech Connect

It has been suggested that to meet the FreedomCAR objectives for cost, size, weight, efficiency, and reliability higher buss voltages be utilized in HEV and FC automotive applications. The reasoning is that since electric power is equal to the product of voltage and current for a given power a higher voltage and lower current would result in smaller cable and inverter switching components. Consequently, the system can be lighter and smaller. On the other hand, higher voltages are known to require better and thicker electrical insulation that reduce the available slot area for motor windings. One cause of slow insulation breakdown is corona that gradually erodes the insulation and shortens the life expectancy of the motor. This study reports on the results of a study on corona initiating voltages for mush-wound and bobbin-wound stators. A unique testing method is illustrated.

Hsu, J.S.

2005-05-06T23:59:59.000Z

324

Method and apparatus for generating motor current spectra to enhance motor system fault detection  

DOE Patents (OSTI)

A method and circuitry for sampling periodic amplitude modulations in a nonstationary periodic carrier wave to determine frequencies in the amplitude modulations. The method and circuit are described in terms of an improved motor current signature analysis. The method insures that the sampled data set contains an exact whole number of carrier wave cycles by defining the rate at which samples of motor current data are collected. The circuitry insures that a sampled data set containing stationary carrier waves is recreated from the analog motor current signal containing nonstationary carrier waves by conditioning the actual sampling rate to adjust with the frequency variations in the carrier wave. After the sampled data is transformed to the frequency domain via the Discrete Fourier Transform, the frequency distribution in the discrete spectra of those components due to the carrier wave and its harmonics will be minimized so that signals of interest are more easily analyzed.

Linehan, Daniel J. (Knoxville, TN); Bunch, Stanley L. (Oak Ridge, TN); Lyster, Carl T. (Knoxville, TN)

1995-01-01T23:59:59.000Z

325

Method and apparatus for generating motor current spectra to enhance motor system fault detection  

DOE Patents (OSTI)

A method and circuitry are disclosed for sampling periodic amplitude modulations in a nonstationary periodic carrier wave to determine frequencies in the amplitude modulations. The method and circuit are described in terms of an improved motor current signature analysis. The method insures that the sampled data set contains an exact whole number of carrier wave cycles by defining the rate at which samples of motor current data are collected. The circuitry insures that a sampled data set containing stationary carrier waves is recreated from the analog motor current signal containing nonstationary carrier waves by conditioning the actual sampling rate to adjust with the frequency variations in the carrier wave. After the sampled data is transformed to the frequency domain via the Discrete Fourier Transform, the frequency distribution in the discrete spectra of those components due to the carrier wave and its harmonics will be minimized so that signals of interest are more easily analyzed. 29 figs.

Linehan, D.J.; Bunch, S.L.; Lyster, C.T.

1995-10-24T23:59:59.000Z

326

Guide for Increasing the Capacity of Induction Motors  

Science Conference Proceedings (OSTI)

In 2002, as a result of re-licensing, nearly 700 MW of U.S. nuclear power capacity was added in 13 uprate programs. Over the past two years, similar re-licensing efforts have resulted in 33 uprates, which have increased nuclear capacity by over 1,700 MW. With this re-licensing and uprating of nuclear power plants, there is seen an accompanying need to increase the output of some of the major auxiliary motors. With the special motors used in nuclear power plants, some of which have flywheels and some of w...

2004-12-20T23:59:59.000Z

327

Method for assessing motor insulation on operating motors  

DOE Patents (OSTI)

A method for monitoring the condition of electrical-motor-driven devices. The method is achieved by monitoring electrical variables associated with the functioning of an operating motor, applying these electrical variables to a three phase equivalent circuit and determining non-symmetrical faults in the operating motor based upon symmetrical components analysis techniques.

Kueck, John D. (Oak Ridge, TN); Otaduy, Pedro J. (Oak Ridge, TN)

1997-01-01T23:59:59.000Z

328

Method for assessing motor insulation on operating motors  

DOE Patents (OSTI)

A method for monitoring the condition of electrical-motor-driven devices is disclosed. The method is achieved by monitoring electrical variables associated with the functioning of an operating motor, applying these electrical variables to a three phase equivalent circuit and determining non-symmetrical faults in the operating motor based upon symmetrical components analysis techniques. 15 figs.

Kueck, J.D.; Otaduy, P.J.

1997-03-18T23:59:59.000Z

329

Microwave lamp with multi-purpose rotary motor  

DOE Patents (OSTI)

In a microwave powered electrodeless lamp, a single rotary motor is used to (a) rotate the bulb and (b) provide rotary motion to a blower or pump means for providing cooling fluid to the magnetron and/or to a forced gas cooler for providing cooling gas to the bulb. The blower may consist of only of an impeller without the usual blower housing. The motor, bulb stem and bulb, or motor, bulb stem, bulb and blower may be formed as an integral unit so as to facilitate replacement. 8 figs.

Ury, M.G.; Turner, B.; Wooten, R.D.

1999-02-02T23:59:59.000Z

330

Microwave lamp with multi-purpose rotary motor  

DOE Patents (OSTI)

In a microwave powered electrodeless lamp, a single rotary motor is used to a) rotate the bulb and b) provide rotary motion to a blower or pump means for providing cooling fluid to the magnetron and/or to a forced gas cooling for providing cooler gas to the bulb. The blower may consist of only of an impeller without the usual blower housing. The motor, bulb stem and bulb, or motor, bulb stem, bulb and blower may be formed as an integral unit so as to facilitate replacement.

Ury, Michael G. (Bethesda, MD); Turner, Brian (Myersville, MD); Wooten, Robert D. (Rockville, MD)

1999-01-01T23:59:59.000Z

331

High Efficiency Fans and High Efficiency Electrical Motors  

E-Print Network (OSTI)

Replacing nominal efficient electrical motors with premium efficiency can save on electrical power costs in cotton gins. Connected horsepower load on industrial air fans is approximately 60% of the total horsepower in a typical cotton gin. By replacing old inefficient centrifugal fans with new higher efficiency fans, additional power savings can be achieved.

Breedlove, C. W.

1989-09-01T23:59:59.000Z

332

BPM Motors in Residential Gas Furnaces: What are theSavings?  

Science Conference Proceedings (OSTI)

Residential gas furnaces contain blowers to distribute warm air. Currently, furnace blowers use either a Permanent Split Capacitor (PSC) or a Brushless Permanent Magnet (BPM) motor. Blowers account for the majority of furnace electricity consumption. Therefore, accurate determination of the blower electricity consumption is important for understanding electricity consumption of furnaces. The electricity consumption of blower motors depends on the static pressure across the blower. This paper examines both types of blower motors in non-condensing non-weatherized gas furnaces at a range of static pressures. Fan performance data is based on manufacturer product literature and laboratory tests. We use field-measured static pressure in ducts to get typical system curves to calculate how furnaces would operate in the field. We contrast this with the electricity consumption of a furnace blower operating under the DOE test procedure and manufacturer rated conditions. Furnace electricity use is also affected by operating modes that happen at the beginning and end of each furnace firing cycle. These operating modes are the pre-purge and post-purge by the draft inducer, the on-delay and off-delay of the blower, and the hot surface ignitor operation. To accurately calculate this effect, we use the number of firing cycles in a typical California house in the Central Valley of California. Cooling hours are not considered in the DOE test procedure. We also account for furnace blower use by the air conditioner and stand-by power. Overall BPM motors outperform PSC motors, but the total electricity savings are significantly less than projected using the DOE test procedure conditions. The performance gains depend on the static pressure of the household ducts, which are typically much higher than in the test procedures.

Lutz, James; Franco, Victor; Lekov, Alex; Wong-Parodi, Gabrielle

2006-05-12T23:59:59.000Z

333

Brandl Motor | Open Energy Information  

Open Energy Info (EERE)

Motor Jump to: navigation, search Name Brandl Motor Address Calvinstr 24 Place Berlin Zip 10557 Sector Marine and Hydrokinetic Phone number +49 30 39 48 06 38 Website http:http:...

334

AGNI Motors | Open Energy Information  

Open Energy Info (EERE)

Place India Zip 370 230 Sector Vehicles Product UK-based manufacturer of DC Motors and Battery Management Systems for Electric Vehicles References AGNI Motors1 LinkedIn...

335

Commercial Motor Vehicle Brake Assessment Tools  

E-Print Network (OSTI)

Commercial Motor Vehicle Brake Assessment Tools Commercial Motor Vehicle Roadside Technology Corridor Safety Technology Showcase October 14, 2010 Commercial Motor Vehicle Roadside Technology Corridor #12;Overview · Commercial Motor Vehicle (CMV) Air Brake System · North American Standard Level-1

336

1060 IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, VOL. 47, NO. 5, OCTOBER 2000 Neural-Network-Based Motor Rolling  

E-Print Network (OSTI)

-Network-Based Motor Rolling Bearing Fault Diagnosis Bo Li, Student Member, IEEE, Mo-Yuen Chow, Senior Member, IEEE, Yodyium Tipsuwan, Student Member, IEEE, and James C. Hung, Fellow, IEEE Abstract--Motor systems are very forms of energy to provide power to other equipment. In the performance of all motor systems, bearings

Chow, Mo-Yuen

337

Southeast Colorado Power Association - Energy Efficiency Rebate Program |  

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

Southeast Colorado Power Association - Energy Efficiency Rebate Southeast Colorado Power Association - Energy Efficiency Rebate Program Southeast Colorado Power Association - Energy Efficiency Rebate Program < Back Eligibility Commercial Residential Savings Category Heating & Cooling Commercial Heating & Cooling Cooling Appliances & Electronics Heat Pumps Manufacturing Water Heating Program Info State Colorado Program Type Utility Rebate Program Rebate Amount Water Heater (Fossil Fuel to Electric): $200, plus $25 lifetime warranty bonus Water Heater (Electric to Electric): $1 per gallon, plus $50 six year warranty bonus Refrigerators/Freezers: $50 Clothes Washers: $50 Dishwashers: $40 Motors: $10 per HP Motors (Wiring Assistance): $1.50 per HP Radiant Heater: $4.00 per KW Air-Source Heat Pump: $150 - $175/ton; bonus of $150 for Energy Star rating

338

UQM Power Products Inc | Open Energy Information  

Open Energy Info (EERE)

80530 Product Colorado-based, subsidiary if UQM Technologies, manufacturer of proprietary electric motors. References UQM Power Products Inc1 LinkedIn Connections CrunchBase...

339

Advanced Manufacturing Office: MotorMaster+  

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

schedules Motor inventory information, including motor nameplate information, operating profile, load status, and field measurements Life cycle economics, including depreciation...

340

Multiple stage miniature stepping motor  

DOE Patents (OSTI)

A stepping motor comprising a plurality of stages which may be selectively activated to effect stepping movement of the motor, and which are mounted along a common rotor shaft to achieve considerable reduction in motor size and minimum diameter, whereby sequential activation of the stages results in successive rotor steps with direction being determined by the particular activating sequence followed.

Niven, William A. (Livermore, CA); Shikany, S. David (Danville, CA); Shira, Michael L. (Fremont, CA)

1981-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "motor power rating" 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

Guide for Determining Motor Repair versus Motor Replacement  

Science Conference Proceedings (OSTI)

The Motor Replacement/Refurbishment Guide (MRRG) was written to aid with the determination on whether to repair an existing motor or to purchase a replacement motor. This guideline provides the basic tools necessary to make a determination based upon, but not limited to, the extent of the repair scope and the cost of the repair. This guideline presents a process to be utilized by the station or corporate motor specialist to assess the motor repair scope both initial and revised. The data gathering proces...

2005-12-23T23:59:59.000Z

342

Motor technology for mining applications advances  

SciTech Connect

AC motors are steadily replacing DC motors in mining and mineral processing equipment, requiring less maintenance. The permanent magnet rotor, or the synchronous motor, has enabled Blador to introduce a line of cooling tower motors. Synchronous motors are soon likely to take over from the induction motor. 1 photo.

Fiscor, S.

2009-08-15T23:59:59.000Z

343

ams2000.com Stepper Motor System Basics  

E-Print Network (OSTI)

. STEPPING MOTORS TYPES OF STEPPING MOTORS VARIABLE RELUCTANCE PERMANENT MAGNET HYBRID MOTOR WINDINGS motor with the magnetic field electronically switched to rotate the armature magnet around. A Stepping MOTORS There are basically three types of stepping motors; variable reluctance, permanent magnet

Bechtold, Jill

344

Nuclear Maintenance Applications Center: Guide for the Performance of OnSite and Vendor Shop Inspections of Electric Motors  

Science Conference Proceedings (OSTI)

The power industry is experiencing a loss of expertise as its workforce ages. Compounding the problem is that many plants find that there is limited time to train new workers. Periodically, station and corporate motor specialists are asked to perform inspections of on-site motors to maintain a level of equipment reliability or to perform inspections for customers at vendor motor shops. This report should prove valuable during visual inspections of electric motors.

2008-12-19T23:59:59.000Z

345

Evaluating High Efficiency Motor Retrofit  

E-Print Network (OSTI)

In the petrochemical and refining Industries, and most manufacturing plants, the reliable operation of AC motors always has been crucial to the continuous operation of the process. Now, the cost of operating these motors has also become a significant factor. Engineers Involved In motor specification can help lower plant operating costs and reduce electrical energy consumption dramatically by a relatively simple technique: retrofit of existing, standard-efficiency motors with new, high efficiency models. This article demonstrates strong reasons for motor retrofit, and explains step-by step how process and manufacturing engineering personnel can fully evaluate a retrofit decision.

Evans, T. A.

1984-01-01T23:59:59.000Z

346

Retail Motor Gasoline Prices*  

Gasoline and Diesel Fuel Update (EIA)

6 6 Notes: Gasoline pump prices have backed down from the high prices experienced last summer and fall. The retail price for regular motor gasoline fell 11 cents per gallon from September to December. However, with crude oil prices rebounding somewhat from their December lows combined with lower than normal stock levels, we project that prices at the pump will rise modestly as the 2001 driving season begins this spring. For the summer of 2001, we expect only a little difference from the average price of $1.50 per gallon seen during the previous driving season, as motor gasoline stocks going into the driving season are projected to be slightly less than they were last year. The situation of relatively low inventories for gasoline could set the stage for some regional imbalances in supply that could once again

347

Motor gasolines, Summer 1982  

Science Conference Proceedings (OSTI)

The samples were collected from service stations throughout the country and were analyzed in the laboratories of various refiners, motor manufacturers, and chemical companies. The analytical data for 796 samples of motor gasoline, were submitted to the Bartlesville Energy Technology Center for study, necessary calculations, and compilation under a cooperative agreement between the Bartlesville Energy Technology Center (BETC) and the American Petroleum Institute (API). They represent the products of 22 companies, large and small, which manufacture and supply gasoline. These data are tabulated by groups according to brands (unlabeled) and grades for 17 marketing districts into which the country is divided. A map included in this report, shows marketing areas, districts and sampling locations. The report also includes charts indicating the trends of selected properties of motor fuels since 1959. Sixteen octane distribution percent charts for areas 1, 2, 3, and 4 for unleaded antiknock index (R + M)/2 below 90.0, unleaded antiknock index (R + M)/2 90.0 and above, leaded antiknock index (R + M)/2 below 93.0, and leaded antiknock index (R + M)/2 93.0 and above grades of gasoline are presented in this report. The antiknock (octane) index (R + M)/2 averages of gasoline sold in this country were 87.3 for unleaded below 90.0, 91.7 for unleaded 90.0 and above, 89.0 for leaded below 93.0, and no data in this report for 93.0 and above grades of leaded gasoline.

Shelton, E.M.

1983-03-01T23:59:59.000Z

348

Economic Realities and Energy Efficient Polyphase Integral Horsepower Electric Motors  

E-Print Network (OSTI)

Energy efficient polyphase integral horsepower electric motors are currently being vigorously promoted as a profitable method of conserving energy in many industrial and commercial applications. While the goal to be attained is indeed laudable, and must be tenaciously pursued, the economic realities of investment payback on increased efficiency versus cost of change out, power factor, etc. must have a meaningful review before decision making. Actual savings on a discount cash flow basis must be documented. and validity of the claims for the energy efficient motor must be verified. This paper develops the procedures used by the chemical manufacturing divisions of the Union Carbide Corporation in developing a long range plan for evolution from a motor population of standard efficiency units to one of higher efficiency and increased reliability. It notes statistics publicized by the U.S. Department of Energy, Union Carbide's overall electric equipment efficiency review, their own efficiency testing of sample small electric motors, and a pilot program to determine the number of lightly loaded motors in plant location. It further depicts an economic appraisal on the payback of replacing a standard efficiency motor with a higher efficiency unit and an action plan for purchasing energy efficient motors while simultaneously securing optimization of other parameters.

Whittington, B. W.

1980-01-01T23:59:59.000Z

349

Low Power Design Low PowerLow Power  

E-Print Network (OSTI)

, correlations among system state transitions #12;Low Power Design USC/LPCAD Page 11 USCUSC Low PowerLow Power for the requestsIncoming rates for the requests 21,rr 12 ,rr, :, : State transition ratesState transition rates OS and hardware Abstract, hierarchical finite-state machine Each state represents power

Pedram, Massoud

350

Self contained, independent, in-vacuum spinner motor  

DOE Patents (OSTI)

An independent, self contained apparatus for operation within a vacuum chamber. A sealed enclosure is located in the chamber. The enclosure contains its own atmosphere independent of the vacuum in the chamber. A motor, power unit, and controls are located entirely within the enclosure. They do not have a direct structural connection outside of the enclosure in any way that would effect the atmosphere within the enclosure. The motor, power unit, and controls drive a spinner plate located outside the enclosure but within the vacuum chamber.

Ayers, Marion J. (Livermore, CA)

2002-01-01T23:59:59.000Z

351

Motor Starting Module (MSM V2.0)  

Science Conference Proceedings (OSTI)

MSM 2.0 allows evaluation of the potential Power Quality impacts (voltage drop and resultant flicker) of motor starting operations on the surrounding system. The developed module is an improvement on the Motor starting module of Power Quality Diagnostic System (PQDS) software that was developed earlier by EPRI. The user-friendly module has been developed on an EMTP-RV platform and serves to overcome the rigidity of the single line structure of the PQDS version. Customer will need to install a licensed co...

2009-10-22T23:59:59.000Z

352

Power Marketing  

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

Certificate Solicitations Benefit Review Energy Services Rates and Repayment WindHydro Integration Feasibility Study Send correspondence to: Power Marketing Manager Western...

353

Method and apparatus for monitoring motor operated valve motor ...  

A method and apparatus are provided for monitoring a motor operated valve during the brief period when the valve seats and the torque switch trips to deenergize the ...

354

lectric Motors are used to drive tools and machines of all sizes. They move huge pots of molten steel in steel mills; they run mixers in the kitchen and drills in the garage.You may have used model cars or trains  

E-Print Network (OSTI)

model cars or trains powered by electric motors. Electricity for these motors may come from batteries, from house current, or from some special supply. The electric motor in your Discovery Kit is powered by a small battery. 3 E L E C T R I C M O T O R 2Student's Workbook 3IntroductIon Electric Motors are used

Weston, Ken

355

Energy Conservation and Efficiency Improvement for the Electric Motors Operating in U.S. Oil Fields  

E-Print Network (OSTI)

Because of its versatility, electricity consumption continues to grow all over the world more rapidly than any other energy form. The portion of the United States' primary energy supply used as electricity has expanded from near zero at the turn of the century to 38 percent in 1987. Electric motors use as input about 64% of all electricity in the U.S. and many other countries. The cost of powering motors in the U.S. is estimated to be roughly $90 billion a year. In terms of primary energy input, motor energy use in the U.S. is comparable to all auto energy use. Electric motors are the largest users of energy in all mineral extraction activities. In oil fields, electric motors drive the pumping units used for lifting the oil and water to the surface. To find out actual efficiencies of operating motors in the oil fields, the University of Wyoming and the U.S. Department of Energy -Denver Support Office have been working for the last twelve months on two Naval Petroleum Reserve oil fields -one each in California and Wyoming. So far, actual motor loading of all operating oil fields motors has been determined by actual field measurements. We have also completed the analysis of economy of operation of existing motors and evaluating the candidate replacement motors. In this paper, we will present these results along with the methodologies and protocol developed for motor energy efficiency improvement in oil field applications.

Ula, S.; Cain, W.; Nichols, T.

1993-03-01T23:59:59.000Z

356

Advanced Manufacturing Office: MotorMaster+  

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

MotorMaster+ to MotorMaster+ to someone by E-mail Share Advanced Manufacturing Office: MotorMaster+ on Facebook Tweet about Advanced Manufacturing Office: MotorMaster+ on Twitter Bookmark Advanced Manufacturing Office: MotorMaster+ on Google Bookmark Advanced Manufacturing Office: MotorMaster+ on Delicious Rank Advanced Manufacturing Office: MotorMaster+ on Digg Find More places to share Advanced Manufacturing Office: MotorMaster+ on AddThis.com... MotorMaster+ This photo shows the inner workings of an industrial electric motor with gears. In the lower left hand corner are the words "MotorMaster+" and underneath are the words "Motor-Driven Systems." Download MotorMaster+ now! Version: 4.01.01 Release Date: September 21, 2010 Release Notes Metric Unit Measurements: No

357

NVLAP Efficiency of Electric Motors  

Science Conference Proceedings (OSTI)

... program was originally developed at the request of the National Electrical Manufacturers Association (NEMA) to assist the electric motor industry in ...

2013-05-14T23:59:59.000Z

358

Imports of Total Motor Gasoline  

U.S. Energy Information Administration (EIA)

Reformulated and conventional gasoline production excludes adjustments for fuel ethanol and motor gasoline blending components. Historical data prior to June 4, ...

359

Finished Motor Gasoline Net Production  

U.S. Energy Information Administration (EIA)

-No Data Reported; --= Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. Notes: Finished motor gasoline ...

360

A new structure for bidirectional power flow  

Science Conference Proceedings (OSTI)

In this paper, methods of energy recovery for electric motors in braking mode are presented. Also for motors with low and medium regenerative power, a low cost and simple structure is proposed. In this method, for converting the high voltage of DC bus ... Keywords: bidirectional power flow, energy saving, regenerative brake

Seyed Borhan Azimi; Hassan Ghafoori Fard

2005-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "motor power rating" 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

Shipping and Storage of Electric Motors  

Science Conference Proceedings (OSTI)

Electric motor predictive and preventive maintenance programs have been written and describe the best methodology for increasing motor reliability. However, many utilities have invested substantial resources into the procurement of spare motors. These motors are stored both onsite and off site (at vendor facilities). In addition, motors are being refurbished/reconditioned and must be shipped and possibly stored upon return.

2004-12-20T23:59:59.000Z

362

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

363

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

364

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. Bene; J. Fo?t; M. Pittermann

2011-09-01T23:59:59.000Z

365

The distributed multilevel ant-stigmergy algorithm used at the electric-motor design  

Science Conference Proceedings (OSTI)

This article presents an optimization method used at the electric-motor design. The goal of the optimization was to find the geometrical parameter values that would generate the rotor and the stator geometries with minimum power losses. A new, distributed ... Keywords: Ant-colony optimization, Distributed computing, Multi-parameter optimization, Numerical simulation, Stigmergy, Universal electric-motor

Peter Koroec; Jurij ilc

2008-09-01T23:59:59.000Z

366

Low-cost motor drive embedded fault diagnosis systems  

E-Print Network (OSTI)

Electric motors are used widely in industrial manufacturing plants. Bearing faults, insulation faults, and rotor faults are the major causes of electric motor failures. Based on the line current analysis, this dissertation mainly deals with the low cost incipient fault detection of inverter-fed driven motors. Basically, low order inverter harmonics contributions to fault diagnosis, a motor drive embedded condition monitoring method, analysis of motor fault signatures in noisy line current, and a few specific applications of proposed methods are studied in detail. First, the effects of inverter harmonics on motor current fault signatures are analyzed in detail. The introduced fault signatures due to harmonics provide additional information about the motor faults and enhance the reliability of fault decisions. It is theoretically and experimentally shown that the extended fault signatures caused by the inverter harmonics are similar and comparable to those generated by the fundamental harmonic on the line current. In the next chapter, the reference frame theory is proposed as a powerful toolbox to find the exact magnitude and phase quantities of specific fault signatures in real time. The faulty motors are experimentally tested both offline, using data acquisition system, and online, employing the TMS320F2812 DSP to prove the effectiveness of the proposed tool. In addition to reference frame theory, another digital signal processor (DSP)-based phasesensitive motor fault signature detection is presented in the following chapter. This method has a powerful line current noise suppression capability while detecting the fault signatures. It is experimentally shown that the proposed method can determine the normalized magnitude and phase information of the fault signatures even in the presence of significant noise. Finally, a signal processing based fault diagnosis scheme for on-board diagnosis of rotor asymmetry at start-up and idle mode is presented. It is quite challenging to obtain these regular test conditions for long enough time during daily vehicle operations. In addition, automobile vibrations cause a non-uniform air-gap motor operation which directly affects the inductances of electric motor and results quite noisy current spectrum. The proposed method overcomes the challenges like aforementioned ones simply by testing the rotor asymmetry at zero speed.

Akin, Bilal

2007-08-01T23:59:59.000Z

367

Using MotorMaster to Track Motor Inventory and Analyze Purchasing Decisions  

E-Print Network (OSTI)

MotorMaster 4.0 can be a useful software package for electric motor management decisions in industrial facilities. To be successful, the MotorMaster database must be populated with detailed motor nameplate information. Georgia Tech worked with a large, motor intensive chemical manufacturing plant to collect motor nameplate information on motors 60 hp or larger and populate the motor database. Approximately 130 motors were identified and surveyed. The completed motor database is used to track maintenance actions and to analyze motor replacement options. The approach used to secure and enter motor nameplate data along with examples of purchasing analyses completed will be presented. The success of the MotorMaster software with large motors has convinced the firm to expand its use to smaller horsepower motors.

Brown, M.; Meffort, W.

2007-01-01T23:59:59.000Z

368

Patterning of the Ciona intestinalis Motor Ganglion  

E-Print Network (OSTI)

Pitx2 as markers for fast motor neurons and partition cells.for the specification of motor neuron identity. Cell Gans,Tsuda, M. (2010). Simple motor system of the ascidian larva:

Stolfi, Alberto Sunao

2011-01-01T23:59:59.000Z

369

Motor/generator - Energy Innovation Portal  

A motor/generator is provided for connecting between a transmission input shaft and an output shaft of a prime mover. The motor/generator may include a motor ...

370

Industrial motor repair in the United States  

Science Conference Proceedings (OSTI)

This report characterizes the motor repair industry in the United States; summarizes current motor repair and testing practice; and identifies barriers to energy motor repair practice and recommends strategies for overcoming those barriers.

Schueler, V.; Leistner, P.; Douglass, J.

1994-09-01T23:59:59.000Z

371

COMMERICAL MOTOR VEHICLE OPERATOR EMPLOYMENT APPLICATION SUPPLEMENT  

E-Print Network (OSTI)

COMMERICAL MOTOR VEHICLE OPERATOR EMPLOYMENT APPLICATION SUPPLEMENT _________________________________________________________ Applicants for positions involving the operation of a commercial motor vehicle must comply with Title 49 CFR: _______________ Please list the following information for each unexpired commercial motor vehicle operator license

Roy, Subrata

372

Commercial Motor Vehicle Roadside Technology Corridor (CMVRTC)  

E-Print Network (OSTI)

Commercial Motor Vehicle Roadside Technology Corridor (CMVRTC) Oak Ridge National Laboratory Safety Security Vehicle Technologies Research Brief T he Commercial Motor Vehicle Roadside Technology in Tennessee to demonstrate, test, evaluation, and showcase innovative commercial motor vehicle (CMV) safety

373

A multidiscipline and multi-rate modeling framework for planar solid-oxide fuel cell based power-conditioning system for vehicular APU  

Science Conference Proceedings (OSTI)

We develop a numerical modeling framework for planar solid-oxide fuel cell (PSOFC) based vehicular auxiliary power unit (APU). The power-conditioning system (PCS) model comprises the comprehensive transient models of PSOFC, balance-of-plant and power-electronics ...

Sudip K. Mazumder; Sanjaya Pradhan; Joseph Hartvigsen; Diego Rancruel; Michael R. von Spakovsky; Moe Khaleel

2007-07-01T23:59:59.000Z

374

IEMDC -IN-LINE ELECTRIC MOTOR DRIVEN COMPRESSOR  

SciTech Connect

Dresser-Rand completed the preliminary aerodynamic flowpath of the volute and inlet design for the compressor section. This has resulted in considerable progress being made on the development of the compressor section and ultimately towards the successful integration of the IEMDC System design. Significant effort was put forth in the design of aerodynamic components which resulted in a design that meets the limits of aerodynamically induced radial forces previously established. Substantial effort has begun on the mechanical design of the compressor pressure containing case and other internal components. These efforts show progression towards the successful integration of a centrifugal compressor and variable speed electric motor ventilated by the process gas. All efforts continue to confirm the feasibility of the IEMDC system design. During the third quarter reporting period, the focus was to further refine the motor design and to ensure that the IEMDC rotor system supported on magnetic bearing is in compliance with the critical speed and vibration requirements of the API standards 617 and 541. Consequently specification to design magnetic bearings was developed and an RFQ to three magnetic bearing suppliers was issued. Considerable work was also performed to complete preliminary reports on some of the deliverable tasks under phase 1.0. These include specification for the VFD, RFQ for the magnetic bearings, and preliminary write-up for motor instrumentation and control schematic. In order to estimate motor efficiency at various operating points, plots of calculated motor losses, and motor cooling gas flow rates were also prepared. Preliminary evaluations of motor support concepts were performed via FEA to determine modal frequencies. Presentation was made at DOE Morgantown on August 12, 2003 to provide project status update. Preparations for the IEMDC motor-compressor presentation, at the GMRC conference in Salt Lake City to be held on October 5, 2003, were also started. Detailed calculations of cooling gas flow requirements for the motor and magnetic bearings, per several new operating points designated by DR, confirmed that the required gas flow was within the compressor design guidelines. Previous thrust load calculations had confirmed that the magnetic thrust bearing design load capacity of 6,000 lb. was sufficient to handle the net thrust load produced by the motor and compressor pressure loading. Thus the design data that has been generated, for the variable speed 10 MW 12,000 rpm motor, during the last three quarters, continue to confirm the feasibility of an efficient and robust motor design.

Michael J. Crowley; Prem N. Bansal; John E. Tessaro

2004-01-01T23:59:59.000Z

375

Obstacles and Opportunity: Turbine Motorization in Refineries Today  

E-Print Network (OSTI)

Steam turbines have been widely used in oil refineries for driving pumps, compressors and other rotary machines. However, in recent years, the authors of this paper have seen substantial turbine motorization projects completed or being planned in the refineries. This paper discusses the key aspects that should be considered in evaluating the feasibility of motorization projects. Based on the literature review and a refinery survey conducted by the authors, the key factors include the critical level of the related equipment, the potential energy savings and capital cost, the steam and power balance in the related area, and the reliability in the refinery's power supply. Based on the authors' experience, the utilities' energy efficiency incentive programs in California also influence the decision-making process for turbine motorization projects. Therefore, this paper includes a description of the utilities' guidelines for fuel substitution projects. In particular, the utilities' three-prong requirements on net source-BTU energy savings, cost effectiveness, and avoidance of adverse impacts to the environment are discussed. Two real life case studies are presented to demonstrate how the above criteria should be applied for determining if a motorization opportunity is economically viable. A discussion on suggested features is also included for prescreening turbine motorization project candidates for better energy and environment economics such as venting of exhaust steam from a back pressure turbine and oversized design of the existing turbine and pump.

Feng, Hua; Liu, Jinghing; Liu, Xiang; Ahmad, Mushtaq; Deng, Alan

2012-01-01T23:59:59.000Z

376

Trexa Motor Corporation TMC | Open Energy Information  

Open Energy Info (EERE)

Trexa Motor Corporation TMC Jump to: navigation, search Name Trexa Motor Corporation (TMC) Place Los Angeles, California Sector Vehicles Product Los Angeles - based subsidiary of...

377

PC Based wireless stepper motor control.  

E-Print Network (OSTI)

??This project is about making an embedded system in order to control different functionalities of a stepper motor. The main functions of this stepper motor (more)

Jamal, Omar; Khan, Shahnawaz

2013-01-01T23:59:59.000Z

378

CQST/CNEX Efficiency of Electric Motors  

Science Conference Proceedings (OSTI)

CQST/CNEX Efficiency of Electric Motors. NVLAP Lab Code: 200609-0. ... Send E-Mail to NVLAP at: NVLAP@nist.gov. Efficiency of Electric Motors. ...

2013-08-16T23:59:59.000Z

379

Mission Motors Company | Open Energy Information  

Open Energy Info (EERE)

Motors Company Place San Francisco, California Zip 94103 Product San Francisco-based electric Motorcycle manufacturer. References Mission Motors Company1 LinkedIn...

380

CQST/CNEX Efficiency of Electric Motors  

Science Conference Proceedings (OSTI)

... of Electric Motors. Accreditation Valid From: January 1, 2013 Through: December 31, 2013. [24/M01] IEEE 112, Method B Electric Motor Efficiency ...

2013-08-16T23:59:59.000Z

Note: This page contains sample records for the topic "motor power rating" 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

Determining Electric Motor Load and Efficiency  

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

nance logging, inventory control, energy and dollar savings tracking, and life cycle cost analysis. MotorMaster+ is available at no cost to Motor Challenge Partners. 10 Electrical...

382

Advanced Manufacturing Office: MotorMaster+ International  

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

on Twitter Bookmark Advanced Manufacturing Office: MotorMaster+ International on Google Bookmark Advanced Manufacturing Office: MotorMaster+ International on Delicious Rank...

383

Turn Motors Off When Not in Use  

SciTech Connect

This is one in a series of tip sheets to help manufacturers optimize their industrial motor and motor-driven systems.

Not Available

2008-07-01T23:59:59.000Z

384

Magnetically Coupled Adjustable Speed Motor Drives  

Science Conference Proceedings (OSTI)

This is one in a series of tip sheets to help manufacturers optimize their industrial motor and motor-driven systems.

Not Available

2008-07-01T23:59:59.000Z

385

Highly Efficient Electric Motor Systems - National Renewable ...  

Electric Motor Systems ... savings. Conical hubs Matching axial field poles. Issued Patents on Motor Geometry. 7 NREL Energy Forum November 2009 www.novatorque.com.

386

Piezoelectric wave motor  

DOE Patents (OSTI)

A piezoelectric motor having a stator in which piezoelectric elements are contained in slots formed in the stator transverse to the desired wave motion. When an electric field is imposed on the elements, deformation of the elements imposes a force perpendicular to the sides of the slot, deforming the stator. Appropriate frequency and phase shifting of the electric field will produce a wave in the stator and motion in a rotor. In a preferred aspect, the piezoelectric elements are configured so that deformation of the elements in direction of an imposed electric field, generally referred to as the d.sub.33 direction, is utilized to produce wave motion in the stator. In a further aspect, the elements are compressed into the slots so as to minimize tensile stresses on the elements in use.

Yerganian, Simon Scott (Lee' s Summit, MO)

2001-07-17T23:59:59.000Z

387

Piezoelectric wave motor  

DOE Patents (OSTI)

A piezoelectric motor having a stator in which piezoelectric elements are contained in slots formed in the stator transverse to the desired wave motion. When an electric field is imposed on the elements, deformation of the elements imposes a force perpendicular to the sides of the slot, deforming the stator. Appropriate frequency and phase-shifting of the electric field will produce a wave in the stator and motion in a rotor. In a preferred aspect, the piezoelectric elements are configured so that deformation of the elements in the direction of an imposed electric field, generally referred to as the d.sub.33 direction, is utilized to produce wave motion in the stator. In a further aspect, the elements are compressed into the slots so as to minimize tensile stresses on the elements in use.

Yerganian, Simon Scott (Lee' s Summit, MO)

2003-02-11T23:59:59.000Z

388

Internal combustion electric power hybrid power plant  

SciTech Connect

An internal combustion-electric motor hybrid power plant for an automotive vehicle is disclosed. The power plant includes an internal combustion engine and a direct current electric motor generator which are connected to a drive shaft for the vehicle. A clutch mechanism is provided to connect the internal combustion engine, the direct current electric motor generator and the drive shaft for selectively engaging and disengaging the drive shaft with the internal combustion engine and the motor generator. A storage battery is electrically connected to the motor generator to supply current to and receive current therefrom. Thermoelectric semi-conductors are arranged to be heated by the waste heat of the internal combustion engine. These thermoelectric semi-conductors are electrically connected to the battery to supply current thereto. The thermoelectric semi-conductors are mounted in contact with the outer surfaces of the exhaust pipe of the internal combustion engine and also with the outer surfaces of the cylinder walls of the engine.

Cummings, T.A.

1979-04-10T23:59:59.000Z

389

Upper Great Plains Rates information  

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

Rates and Repayment Services Rates and Repayment Services Rates 2010 Firm Power Rate (effective January 1, 2010) Rate Adjustments 2010 Firm Power Rate Adjustment 2009 Firm Power Rate Adjustment IS Rate Adjustments Rate Adjustment Process Rate Orders Signed, December 23, 2009 (16kb pdf) Announcements Firm Electric Service Customer Letter - Preliminary Review of Drought Adder Component, June 27, 2013 (74kb pdf) Customer Letter - Final Notice of Drought Adder Component, October 2, 2013 (68kb pdf) Integrated System (IS) Rates 2014 IS Rates Customer Information Meeting Presentation, October 15, 2013 (611kb pdf) Customer Letter - Notification of 2014 Rates, September 13, 2013 (160kb pdf) 2014 Transmission and Ancillary Services Rate Calculation and 2012 Rate True-up Calculation (4.9mb pdf) 2013 IS Rates

390

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

391

Submersible canned motor transfer pump  

DOE Patents (OSTI)

A transfer pump used in a waste tank for transferring high-level radioactive liquid waste from a waste tank and having a column assembly, a canned electric motor means, and an impeller assembly with an upper impeller and a lower impeller connected to a shaft of a rotor assembly. The column assembly locates a motor housing with the electric motor means adjacent to the impeller assembly which creates an hydraulic head, and which forces the liquid waste, into the motor housing to cool the electric motor means and to cool and/or lubricate the radial and thrust bearing assemblies. Hard-on-hard bearing surfaces of the bearing assemblies and a ring assembly between the upper impeller and electric motor means grind large particles in the liquid waste flow. Slots in the static bearing member of the radial bearing assemblies further grind down the solid waste particles so that only particles smaller than the clearances in the system can pass therethrough, thereby resisting damage to and the interruption of the operation of the transfer pump. The column assembly is modular so that sections can be easily assembled, disassembled and/or removed. A second embodiment employs a stator jacket which provides an alternate means for cooling the electric motor means and lubricating and/or cooling the bearing assemblies, and a third embodiment employs a variable level suction device which allows liquid waste to be drawn into the transfer pump from varying and discrete levels in the waste tank.

Guardiani, Richard F. (Ohio Township, Allegheny County, PA); Pollick, Richard D. (Sarver, PA); Nyilas, Charles P. (Monroeville, PA); Denmeade, Timothy J. (Lower Burrell, PA)

1997-01-01T23:59:59.000Z

392

Effects of the chemomechanical stepping cycle on the traffic of molecular motors  

E-Print Network (OSTI)

We discuss effects of the stepping kinetics of molecular motors on their traffic behavior on crowded filaments using a simple two-state chemomechanical cycle. While the general traffic behavior is quite robust with respect to the detailed kinetics of the step, a few observable parameters exhibit a strong dependence on these parameters. Most strikingly, the effective unbinding rate of the motors may both increase and decrease with increasing traffic density, depending on the details of the motor step. Likewise the run length either exhibits a strong decrease or almost no dependence on the traffic density. We compare our theoretical results with recent experimental observations on motor traffic.

Stefan Klumpp; Yan Chai; Reinhard Lipowsky

2008-10-09T23:59:59.000Z

393

Future High Voltage Silicon Carbide Power Devices Future ...  

Science Conference Proceedings (OSTI)

... PFC) in Switch Mode Power Supplies (SMPS) Anti-Parallel rectifier in Motor Control Boost Converter and Inverter Section for solar conversion ...

2013-04-20T23:59:59.000Z

394

Design and Development of a Power Modulator for Insulation Testing.  

E-Print Network (OSTI)

??Variable speed drives allow for more precise speed control of induction motors, are of high power factor, and offer fast response characteristics, compared to older (more)

Montasser, Yuseph

2007-01-01T23:59:59.000Z

395

Magnetic levitation configuration incorporating levitation, guidance and linear synchronous motor  

DOE Patents (OSTI)

A propulsion and suspension system for an inductive repulsion type magnetically levitated vehicle which is propelled and suspended by a system which includes propulsion windings which form a linear synchronous motor and conductive guideways, adjacent to the propulsion windings, where both combine to partially encircling the vehicle-borne superconducting magnets. A three phase power source is used with the linear synchronous motor to produce a traveling magnetic wave which in conjunction with the magnets propel the vehicle. The conductive guideway combines with the superconducting magnets to provide for vehicle leviation.

Coffey, Howard T. (Darien, IL)

1993-01-01T23:59:59.000Z

396

Design of Chemotaxis Devices Using Nano-Motors  

E-Print Network (OSTI)

Several designs for micro-devices for chemotaxis based on nano-motors are proposed. The nano- or micro-motors are the conventional Janus rods or spheres that are powered by the catalytic reaction of fuels such as hydrogen peroxide. It is shown how these can be linked to make a device that can follow a concentration gradient of the fuel. The feasibility of assembling the devices using micromanipulation or metallic deposition is discussed. A possible design principle is suggested for a device that follows the concentration gradient of an analyte other than the fuel.

Attard, Phil

2012-01-01T23:59:59.000Z

397

Magnetic levitation configuration incorporating levitation, guidance and linear synchronous motor  

DOE Patents (OSTI)

A propulsion and suspension system for an inductive repulsion type magnetically levitated vehicle which is propelled and suspended by a system which includes propulsion windings which form a linear synchronous motor and conductive guideways, adjacent to the propulsion windings, where both combine to partially encircling the vehicle-borne superconducting magnets. A three phase power source is used with the linear synchronous motor to produce a traveling magnetic wave which in conjunction with the magnets propel the vehicle. The conductive guideway combines with the superconducting magnets to provide for vehicle levitation. 3 figures.

Coffey, H.T.

1993-10-19T23:59:59.000Z

398

Magnetic levitation configuration incorporating levitation, guidance and linear synchronous motor  

DOE Patents (OSTI)

A propulsion and suspension system for an inductive repulsion type magnetically levitated vehicle which is propelled and suspended by a system which includes propulsion windings which form a linear synchronous motor and conductive guideways, adjacent to the propulsion windings, where both combine to partially encircling the vehicle-borne superconducting magnets. A three phase power source is used with the linear synchronous motor to produce a traveling magnetic wave which in conjunction with the magnets propel the vehicle. The conductive guideway combines with the superconducting magnets to provide for vehicle leviation.

Coffey, H.T.

1992-12-31T23:59:59.000Z

399

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

400

Research Laboratories General Motors Corporation General Motors Technical Center  

Office of Legacy Management (LM)

MI. 1-q Research Laboratories General Motors Corporation General Motors Technical Center Warren, Michigan 48090 January 21, 1977 Occupational Health Standards Branch Office of Standards Development U. S. Nuclear Requlatory Commission Washington, D.C. 20555 Attention: Mr. Robert E. Alexander, Chief Dear Mr. Alexander: In 1974, General Motors Corporation acquired a manufacturing plant in Adrian, Michigan. On October 21, 1976, General Motors announced that work would begin immediately to prepare the plant for manufacturing operations (Appendix A). A news release, made by Mr. Irving Loop of ERDA and carried by radio station WABJ of Adrian, Michigan on May 11, 1976, stated that natural uranium was handled in the plant after World War II and that

Note: This page contains sample records for the topic "motor power rating" 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

State observer for synchronous motors  

DOE Patents (OSTI)

A state observer driven by measurements of phase voltages and currents for estimating the angular orientation of a rotor of a synchronous motor such as a variable reluctance motor (VRM). Phase voltages and currents are detected and serve as inputs to a state observer. The state observer includes a mathematical model of the electromechanical operation of the synchronous motor. The characteristics of the state observer are selected so that the observer estimates converge to the actual rotor angular orientation and velocity, winding phase flux linkages or currents.

Lang, Jeffrey H. (Waltham, MA)

1994-03-22T23:59:59.000Z

402

Finished Motor Gasoline Net Production  

Gasoline and Diesel Fuel Update (EIA)

Data Series: Finished Motor Gasoline Finished Motor Gasoline (less Adj.) Reformulated Gasoline Reformulated Gasoline Blenede w/ Fuel Ethanol Reformulated Other Gasoline Conventional Gasoline Conventional Gasoline Blended w/ Fuel Ethanol Conventional Gasoline Blended w/ Fuel Ethanol, Ed55 & Ed55 Other Conventional Gasoline Finished Motor Gasoline Adjustment Kerosene-Type Jet Fuel Kerosene-Type Jet, Commercial Kerosene-Type Jet, Military Distillate Fuel Oil Distillate Fuel Oil, 15 ppm Sulfur and Under Distillate Fuel Oil > 15 ppm to 500 ppm Sulfur Distillate Fuel Oil > 500 ppm Sulfur Residual Fuel Oil Propane/Propylene Period: Weekly 4-Week Average

403

Cargo transportation by two species of motor protein  

E-Print Network (OSTI)

The cargo motion in living cells transported by two species of motor protein with different intrinsic directionality is discussed in this study. Similar to single motor movement, cargo steps forward and backward along microtubule stochastically. Recent experiments found that, cargo transportation by two motor species has a memory, it does not change its direction as frequently as expected, which means that its forward and backward step rates depends on its previous motion trajectory. By assuming cargo has only the least memory, i.e. its step direction depends only on the direction of its last step, two cases of cargo motion are detailed analyzed in this study: {\\bf (I)} cargo motion under constant external load; and {\\bf (II)} cargo motion in one fixed optical trap. Due to the existence of memory, for the first case, cargo can keep moving in the same direction for a long distance. For the second case, the cargo will oscillate in the trap. The oscillation period decreases and the oscillation amplitude increases with the motor forward step rates, but both of them decrease with the trap stiffness. The most likely location of cargo, where the probability of finding the oscillated cargo is maximum, may be the same as or may be different with the trap center, which depends on the step rates of the two motor species. Meanwhile, if motors are robust, i.e. their forward to backward step rate ratios are high, there may be two such most likely locations, located on the two sides of the trap center respectively. The probability of finding cargo in given location, the probability of cargo in forward/backward motion state, and various mean first passage times of cargo to give location or given state are also analyzed.

Yunxin Zhang

2012-11-06T23:59:59.000Z

404

Effective Rate Period  

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

Fiscal Year 2014 Fiscal Year 2014 Effective Rate Period As of Beginning of the FY 10/01/2013 - 09/30/2014 Mid-Year Changes (if applicable) 10/01/2013 - 09/30/2014 Power Rates Annual Revenue Requirement Rate Schedule Power Revenue Requirement $73,441,557 CV-F13 Base Resource Revenue Requirement $69,585,875 First Preference Revenue Requirement $3,855,682

405

Characterization of Motor Unit Behavior in Patients with Amyotrophic Lateral Sclerosis  

E-Print Network (OSTI)

Abstract In this study, we investigated the behavior of active motor units identified via analysis of electromyographic (EMG) signals recorded from the first dorsal interosseous (FDI) muscle using a quadrifilar needle electrode. Data was collected from control subjects and patients with both lower (LMN) and upper (UMN) motor neuron dominant forms of amyotrophic lateral sclerosis (ALS). EMG recordings were gathered during isometric contractions reaching 20 or 50 % of the force output produced during a maximum voluntary contraction (MVC). Recordings were analyzed using available EMG decomposition software (EMGLAB). Results showed differences in mean motor unit firing rates between patients with ALS and control subjects. Differences were also observed between patients with LMN- and UMN-dominant forms of ALS. Motor unit substitution was observed in patients despite the contractions lasting just a few seconds. Finally, we observed that motor unit action potential (MUAP) waveforms recorded from patients were more complex than those recorded from control subjects as often observed in motor neuron diseases.

Patrick K. Kasi; Lisa S. Krivickas; Melvin Meister; Effie Chew; Paolo Bonato; Maurizio Schmid; Roma Tre; Gary Kamen; Pu Liu

2009-01-01T23:59:59.000Z

406

The mean velocity of two-state models of molecular motor  

E-Print Network (OSTI)

The motion of molecular motor is essential to the biophysical functioning of living cells. In principle, this motion can be regraded as a multiple chemical states process. In which, the molecular motor can jump between different chemical states, and in each chemical state, the motor moves forward or backward in a corresponding potential. So, mathematically, the motion of molecular motor can be described by several coupled one-dimensional hopping models or by several coupled Fokker-Planck equations. To know the basic properties of molecular motor, in this paper, we will give detailed analysis about the simplest cases: in which there are only two chemical states. Actually, many of the existing models, such as the flashing ratchet model, can be regarded as a two-state model. From the explicit expression of the mean velocity, we find that the mean velocity of molecular motor might be nonzero even if the potential in each state is periodic, which means that there is no energy input to the molecular motor in each of the two states. At the same time, the mean velocity might be zero even if there is energy input to the molecular motor. Generally, the velocity of molecular motor depends not only on the potentials (or corresponding forward and backward transition rates) in the two states, but also on the transition rates between the two chemical states.

Yunxin Zhang

2010-07-10T23:59:59.000Z

407

A Tariff for Reactive Power  

DOE Green Energy (OSTI)

Two kinds of power are required to operate an electric power system: real power, measured in watts, and reactive power, measured in volt-amperes reactive or VARs. Reactive power supply is one of a class of power system reliability services collectively known as ancillary services, and is essential for the reliable operation of the bulk power system. Reactive power flows when current leads or lags behind voltage. Typically, the current in a distribution system lags behind voltage because of inductive loads such as motors. Reactive power flow wastes energy and capacity and causes voltage droop. To correct lagging power flow, leading reactive power (current leading voltage) is supplied to bring the current into phase with voltage. When the current is in phase with voltage, there is a reduction in system losses, an increase in system capacity, and a rise in voltage. Reactive power can be supplied from either static or dynamic VAR sources. Static sources are typically transmission and distribution equipment, such as capacitors at substations, and their cost has historically been included in the revenue requirement of the transmission operator (TO), and recovered through cost-of-service rates. By contrast, dynamic sources are typically generators capable of producing variable levels of reactive power by automatically controlling the generator to regulate voltage. Transmission system devices such as synchronous condensers can also provide dynamic reactive power. A class of solid state devices (called flexible AC transmission system devices or FACTs) can provide dynamic reactive power. One specific device has the unfortunate name of static VAR compensator (SVC), where 'static' refers to the solid state nature of the device (it does not include rotating equipment) and not to the production of static reactive power. Dynamic sources at the distribution level, while more costly would be very useful in helping to regulate local voltage. Local voltage regulation would reduce system losses, increase circuit capacity, increase reliability, and improve efficiency. Reactive power is theoretically available from any inverter-based equipment such as photovoltaic (PV) systems, fuel cells, microturbines, and adjustable-speed drives. However, the installation is usually only economical if reactive power supply is considered during the design and construction phase. In this report, we find that if the inverters of PV systems or the generators of combined heat and power (CHP) systems were designed with capability to supply dynamic reactive power, they could do this quite economically. In fact, on an annualized basis, these inverters and generators may be able to supply dynamic reactive power for about $5 or $6 per kVAR. The savings from the local supply of dynamic reactive power would be in reduced losses, increased capacity, and decreased transmission congestion. The net savings are estimated to be about $7 per kVAR on an annualized basis for a hypothetical circuit. Thus the distribution company could economically purchase a dynamic reactive power service from customers for perhaps $6/kVAR. This practice would provide for better voltage regulation in the distribution system and would provide an alternate revenue source to help amortize the cost of PV and CHP installations. As distribution and transmission systems are operated under rising levels of stress, the value of local dynamic reactive supply is expected to grow. Also, large power inverters, in the range of 500 kW to 1 MW, are expected to decrease in cost as they become mass produced. This report provides one data point which shows that the local supply of dynamic reactive power is marginally profitable at present for a hypothetical circuit. We expect that the trends of growing power flow on the existing system and mass production of inverters for distributed energy devices will make the dynamic supply of reactive power from customers an integral component of economical and reliable system operation in the future.

Kueck, John D [ORNL; Kirby, Brendan J [ORNL; Li, Fangxing [ORNL; Tufon, Christopher [Pacific Gas and Electric Company; Isemonger, Alan [California Independent System Operator

2008-07-01T23:59:59.000Z

408

Biophysics of filament length regulation by molecular motors  

E-Print Network (OSTI)

Regulating physical size is an essential problem that biological organisms must solve from the subcellular to the organismal scales, but it is not well understood what physical principles and mechanisms organisms use to sense and regulate their size. Any biophysical size-regulation scheme operates in a noisy environment and must be robust to other cellular dynamics and fluctuations. This work develops theory of filament length regulation inspired by recent experiments on kinesin-8 motor proteins, which move with directional bias on microtubule filaments and alter microtubule dynamics. Purified kinesin-8 motors can depolymerize chemically-stabilized microtubules. In the length-dependent depolymerization model, the rate of depolymerization tends to increase with filament length, because long filaments accumulate more motors at their tips and therefore shorten more quickly. When balanced with a constant filament growth rate, this mechanism can lead to a fixed polymer length. However, the mechanism by which kinesin-8 motors affect the length of dynamic microtubules in cells is less clear. We study the more biologically realistic problem of microtubule dynamic instability modulated by a motor-dependent increase in the filament catastrophe frequency. This leads to a significant decrease in the mean filament length and a narrowing of the filament length distribution. The results improve our understanding of the biophysics of length regulation in cells.

Hui-Shun Kuan; M. D. Betterton

2013-02-13T23:59:59.000Z

409

Doubly Salient Permanent Magnet Motor Development Review  

Science Conference Proceedings (OSTI)

The research of doubly salient permanent magnet motor (DSPM), arises as the emergence of a novel type mechatronic control of AC drive system. Currently, on the international realm, the studies regarding on this kind of motor mainly focus on calculation ... Keywords: Doubly Salient, Permanent Magnet Motor, AC Variable Speed, Magnetic Materials, Switched Reluctance Motor

Lina Yi, Meng Zhao

2013-09-01T23:59:59.000Z

410

Myers Motors | Open Energy Information  

Open Energy Info (EERE)

Myers Motors Myers Motors Jump to: navigation, search Name Myers Motors Place Tallmadge, Ohio Zip 44278 Sector Vehicles Product Myers Motors produces three wheeled electric vehicles. Coordinates 41.10294°, -81.440864° 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":41.10294,"lon":-81.440864,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

411

General Motors | Open Energy Information  

Open Energy Info (EERE)

description http:www.nrel.govnewspress2006375.html LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now General Motors is a company located in...

412

Tesla Motors | Open Energy Information  

Open Energy Info (EERE)

Tesla Motors Tesla Motors Jump to: navigation, search Logo: Tesla Motors Name Tesla Motors Address 1050 Bing Street Place San Carlos, California Zip 94070 Sector Vehicles Product Produces electric vehicles Website http://www.teslamotors.com/ Coordinates 37.496737°, -122.245323° 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":37.496737,"lon":-122.245323,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

413

Transport Characteristics of Molecular Motors  

E-Print Network (OSTI)

Properties of transport of molecular motors are investigated. A simplified model based on the concept of Brownian ratchets is applied. We analyze a stochastic equation of motion by means of numerical methods. The transport is systematically studied with respect to its energetic efficiency and quality expressed by an effective diffusion coefficient. We demonstrate the role of friction and non-equilibrium driving on the transport quantifiers and identify regions of a parameter space where motors are optimally transported.

Machura, Lukasz; Luczka, Jerzy; 10.1016/j.biosystems.2008.05.033

2011-01-01T23:59:59.000Z

414

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

415

Coupling between switching regulation and torque generation in bacterial flagellar motor  

E-Print Network (OSTI)

The bacterial flagellar motor plays a crucial role in both bacterial locomotion and chemotaxis. Recent experiments reveal that the switching dynamics of the motor depends on the motor rotation speed, and thus the motor torque, non-monotonically. Here we present a unified mathematical model which models motor torque generation based on experimental torque-speed curves and torque-dependent switching based on the conformational spread model. The model successfully reproduces the observed switching rate as a function of the rotation speed, and provides a generic physical explanation independent of most details. A stator affects the switching dynamics through two mechanisms: accelerating the conformation flipping rates of individual rotor switching units, which favours slower motor speed and thus increasing torque; and affecting more switching units within unit time, which favours faster speed. Consequently, the switching rate shows a maximum at intermediate speed. Our model predicts that a motor switches more often with more stators. The load-switching relation may serve as a mechanism for sensing the physical environment, similar to the chemotaxis system for sensing the chemical environment. It may also coordinate the switch dynamics of motors within a cell.

Fan Bai; Tohru Minamino; Zhanghan Wu; Keiichi Namba; Jianhua Xing

2011-06-01T23:59:59.000Z

416

2011 Heat Rate Improvement Conference  

Science Conference Proceedings (OSTI)

With the rising cost of fuel and the strong possibility of CO2 emissions regulations and limitations in the near future, utilities and power generation companies are focusing on power plant heat rate and performance. The Electric Power Research Institute (EPRI) 17th Heat Rate Improvement Conference is the latest in a series of meetings designed to assist attendees in addressing problems with power plant performance and in identifying cost-effective solutions for achieving and sustaining heat rate improve...

2011-03-28T23:59:59.000Z

417

Reactive Power Compensating System.  

DOE Patents (OSTI)

The circuit was designed for the specific application of wind-driven induction generators. It has great potential for application in any situation where a varying reactive power load is present, such as with induction motors or generators, or for transmission network compensation.

Williams, Timothy J.; El-Sharkawi, Mohamed A.; Venkata, Subrahmanyam S.

1985-01-04T23:59:59.000Z

418

EERE-2010-BT-STD-0027 Ex Parte Letter NEMA Motor Training re DOE Motors  

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

0-BT-STD-0027 Ex Parte Letter NEMA Motor Training re DOE 0-BT-STD-0027 Ex Parte Letter NEMA Motor Training re DOE Motors Rule 15 July 2013. EERE-2010-BT-STD-0027 Ex Parte Letter NEMA Motor Training re DOE Motors Rule 15 July 2013. This memorandum memorializes a communication between DOE staff and members of the NEMA Motor and Generator Section in connection with this proceeding. NEMA thanks the DOE for the opportunity to conduct training for DOE staff and its consultants on July 15th, 2013 which illustrated the different types of motors, motor construction theory and motor applications by type. It is our hope that better understanding of motor types and construction will assist the Department and its consultants with the discharge of their duties. EERE-2010-BT-STD-0027 Ex Parte Letter NEMA Motor Training re DOE Motors

419

Conducting a Motor Survey: Key Step for Establishing a Motor Management Policy  

E-Print Network (OSTI)

Roughly 70% of the energy consumed by manufacturing processes is used by electric motors. According to the U.S. Department of Energy, greater attention to motor systems management can reduce motor-related energy costs by 18%. Establishing a motor management policy is therefore an essential task for any plant manager or engineer concerned with minimizing motor (and process) downtime and reducing energy costs. In order to develop an effective motor policy, a manager needs information on the number and condition of motors in use. A targeted motor survey will collect data on a representative sample of a plant's motor population. This survey information will then provide a basis for further development of the motor policy. This paper discusses the process of conducting a motor survey. It identifies the type of information to be collected, along with a methodology for selecting appropriate sample motors for more detailed investigations.

Miller, R. B.

2002-04-01T23:59:59.000Z

420

Rate Schedules | Department of Energy  

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

Rate Schedules Rate Schedules Rate Schedules One of the major responsibilities of Southeastern is to design, formulate, and justify rate schedules. Repayment studies prepared by the agency determine revenue requirements and appropriate rate levels and these studies for each of Southeastern's four power marketing systems are updated annually. They demonstrate the adequacy of the rates for each system. Rates are considered to be adequate when revenues are sufficient to repay all costs associated with power production and transmission costs, which include the amortization of the Federal investment allocated to power. Latest Rate Schedules October 1, 2012 ALA-1-N Wholesale Power Rate Schedule Area: PowerSouth Energy Cooperative System: Georgia-Alabama-South Carolina October 1, 2012

Note: This page contains sample records for the topic "motor power rating" from the National Library of EnergyBeta (NLEBeta).
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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

Submersible canned motor transfer pump  

DOE Patents (OSTI)

A transfer pump is described which is used in a waste tank for transferring high-level radioactive liquid waste from a waste tank and having a column assembly, a canned electric motor means, and an impeller assembly with an upper impeller and a lower impeller connected to a shaft of a rotor assembly. The column assembly locates a motor housing with the electric motor means adjacent to the impeller assembly which creates an hydraulic head, and which forces the liquid waste, into the motor housing to cool the electric motor means and to cool and/or lubricate the radial and thrust bearing assemblies. Hard-on-hard bearing surfaces of the bearing assemblies and a ring assembly between the upper impeller and electric motor means grind large particles in the liquid waste flow. Slots in the static bearing member of the radial bearing assemblies further grind down the solid waste particles so that only particles smaller than the clearances in the system can pass there through, thereby resisting damage to and the interruption of the operation of the transfer pump. The column assembly is modular so that sections can be easily assembled, disassembled and/or removed. A second embodiment employs a stator jacket which provides an alternate means for cooling the electric motor means and lubricating and/or cooling the bearing assemblies, and a third embodiment employs a variable level suction device which allows liquid waste to be drawn into the transfer pump from varying and discrete levels in the waste tank. 17 figs.

Guardiani, R.F.; Pollick, R.D.; Nyilas, C.P.; Denmeade, T.J.

1997-08-19T23:59:59.000Z

422

The infant motor profile : a standardized and qualitative assessment of motor bahaviour in infancy.  

E-Print Network (OSTI)

??This thesis presents the Infant Motor Profile (IMP), a new, video-based qualitative assessment of motor behaviour of infants aged 3 to 18 months. The IMP (more)

Heineman, Kirsten Roselien

2010-01-01T23:59:59.000Z

423

Analysis of vibration and pressure pulsation in positive displacement drilling motors  

Science Conference Proceedings (OSTI)

Three, Moineau principle, positive displacement (drilling) motors were tested on a dynamometer using water, air/mist, and foam. In conjunction with a traditional motor performance test, data were collected at 5000 samples per second using an adapted seismic data acquisition system. Shaft speed, torque, pressure, and three-axis vibration data were processed using Seismic Analysis Code (SAC) to obtain energy density spectrums (EDSs). Cascade plots were generated by plotting the EDSs against shaft speed. The cascade plots revealed that pressure pulses and motor vibrations are closely related to the eccentric rotation of the rotor in the power section. Excessive no-load vibrations were not observed in the small motors and test apparatus used; increasing torque usually decreases the amplitude of vibrations observed. Motor vibration amplitudes were as a rule not increased when compressible fluids were substituted for water.

Hamlin, D.B.; Dreesen, D.S.

1998-12-31T23:59:59.000Z

424

Guidelines for the Selection, Procurement, and Acceptance of Nuclear Safety-Related Mild Environment Motor Insulation for Rewinds  

Science Conference Proceedings (OSTI)

As existing nuclear power plants mature, a need exists to provide high quality repair services for safety-related electric motors. This guideline supplements previous EPRI efforts to provide guidance on the selection, procurement, acceptance, and dedication of the insulating materials used during the rewinding of motors located in mild environment plant areas.

1994-09-14T23:59:59.000Z

425

Reduced vibration motor winding arrangement  

DOE Patents (OSTI)

The present invention relates generally to an electric motor winding and, more particularly, to a three phase motor armature winding arrangement designed to reduce motor vibration and improve efficiency. An individual phase winding arrangement having a sixty electrical degree phase belt width for use with a three phase motor armature includes a delta connected phase winding portion and a wye connected phase winding portion. Both the delta and wye connected phase winding portions have a thirty electrical degree phase belt width. The delta and wye connected phase winding portions are each formed from a preselected number of individual coils each formed, in turn, from an unequal number of electrical conductor turns in the approximate ratio of {radical}3. The individual coils of the delta and wye connected phase winding portions may either be connected in series or parallel. This arrangement provides an armature winding for a three phase motor which retains the benefits of the widely known and utilized thirty degree phase belt concept, including improved mmf waveform and fundamental distribution factor.

Slavik, C.J.; Rhudy, R.G.; Bushman, R.E.

1995-12-31T23:59:59.000Z

426

Phenomenological analysis of ATP dependence of motor protein  

E-Print Network (OSTI)

In this study, through phenomenological comparison of the velocity-force data of processive motor proteins, including conventional kinesin, cytoplasmic dynein and myosin V, we found that, the ratio between motor velocities of two different ATP concentrations is almost invariant for any substall, superstall or negative external loads. Therefore, the velocity of motor can be well approximated by a Michaelis-Menten like formula $V=\\atp k(F)L/(\\atp +K_M)$, with $L$ the step size, and $k(F)$ the external load $F$ dependent rate of one mechanochemical cycle of motor motion in saturated ATP solution. The difference of Michaelis-Menten constant $K_M$ for substall, superstall and negative external load indicates, the ATP molecule affinity of motor head for these three cases are different, though the expression of $k(F)$ as a function of $F$ might be unchanged for any external load $F$. Verifications of this Michaelis-Menten like formula has also been done by fitting to the recent experimental data.

Yunxin Zhang

2011-08-09T23:59:59.000Z

427

Motor monitoring method and apparatus using high frequency ...  

A motor current analysis method and apparatus for monitoring electrical-motor-driven devices. The method and apparatus utilize high frequency portions of the motor ...

428

Carbonyl Emissions from Gasoline and Diesel Motor Vehicles  

E-Print Network (OSTI)

Carbonyl compounds present in motor vehicle exhaust, rangingfrom gasoline and diesel motor vehicles. Environ. Sci. Tech.composition and toxicity of motor vehicle emission samples.

Jakober, Chris A.

2008-01-01T23:59:59.000Z

429

Mechanisms of motor activity regulation in axonal transport  

E-Print Network (OSTI)

emerging principles of kinesin motor utilization." Annu Revopposite-polarity microtubule motors." J Cell Biol 156( 4):Kinesin mutations cause motor neuron disease phenotypes by

Reis, Gerald Feliz

2008-01-01T23:59:59.000Z

430

VIA Motors electric vehicle platform | Department of Energy  

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

VIA Motors electric vehicle platform VIA Motors electric vehicle platform extended range electric vehicle technologies VIA Motors electric vehicle platform More Documents &...

431

Demand, Supply, and Price Outlook for Reformulated Motor Gasoline 1995  

U.S. Energy Information Administration (EIA)

benzene extracted from the reformulated motor gasoline pool in their conventional motor gasoline. Importers lacking 1990 motor gasoline quality data with which to

432

Building Energy Software Tools Directory: MotorMaster+  

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

implement an effective energy management program. MotorMaster+ contains a motor inventory module, where motor nameplate data is stored and linked to utility, facility, plant...

433

<RatesMiscInfo>  

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

Rates MISCELLANEOUS INFORMATION Power Supply Report June 2013 (53kb pdf) May 2013 (53kb pdf) April 2013 (52kb pdf) March 2013 (54kb pdf) February 2013 (54kb pdf) January 2013 (54kb...

434

Vehicle Technologies Office: Power Electronics  

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

Power Electronics Power Electronics The power electronics activity focuses on research and development (R&D) for flexible, integrated, modular power electronics for power conditioning and control, including a power switch stage capable of running a variety of motors and loads. Efforts are underway to reduce overall system costs for these vehicles through the elimination of additional cooling loops to keep the power electronics within their safe operation ranges. These challenges are being met within the program through research in: Silicon carbide and Gallium Nitride semiconductors, which can be operated at much higher temperatures than current silicon semiconductors; Packaging innovations for higher temperature operation; Improved thermal control technologies; and

435

Heat Rate Program Guidelines  

Science Conference Proceedings (OSTI)

Power plant facilities with performance or heat rate improvement programs perform better than those that do not have those programs. A heat rate improvement program typically provides sufficient information for decision making with respect to timely maintenance actions and/or operational adjustments. Monitoring the performance of any power plant component includes the trending of parameters that also describe the performance of other plant components, providing insight and information on improving ...

2012-12-31T23:59:59.000Z

436

Mission Motors | Open Energy Information  

Open Energy Info (EERE)

Motors Motors Jump to: navigation, search Name Mission Motors Place San Francisco, California Sector Vehicles Product Electric Motorcycles Year founded 2007 Number of employees 11-50 Website http://www.ridemission.com/ Coordinates 37.7749295°, -122.4194155° 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":37.7749295,"lon":-122.4194155,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

437

Aptera Motors | Open Energy Information  

Open Energy Info (EERE)

Aptera Motors Aptera Motors Jump to: navigation, search Name Aptera Motors Address 2778 Loker Avenue West Place Carlsbad, California Zip 92008 Sector Vehicles Product Aims to to make an aerodynamic two-seater hybrid electric vehicle Website http://www.aptera.com/ Coordinates 33.1412124°, -117.3205123° 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":33.1412124,"lon":-117.3205123,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

438

The Allocation of the Social Costs of Motor-Vehicle Use to Six Classes of Motor Vehicles  

E-Print Network (OSTI)

alcohol Unfinished oils Motor gasoline blending componentsalcohol Unfinished oils Motor gasoline blending componentsthe Use of Persian-Gulf Oil for Motor Vehicles (M. Delucchi

Delucchi, Mark A.

1996-01-01T23:59:59.000Z

439

JOURNAL OF COMMUNICATIONS AND NETWORKS, VOL. 14, NO. 2, APRIL 2012 151 Sum-Rate Optimal Power Policies for Energy Harvesting  

E-Print Network (OSTI)

Policies for Energy Harvesting Transmitters in an Interference Channel Kaya Tutuncuoglu and Aylin Yener by harvesting from ambient sources. Optimal power policies for energy harvesting nodes have attracted recent (Invited Paper) Abstract: This paper considers a two-user Gaussian interference channel with energy

Yener, Aylin

440

Climate VISION: Private Sector Initiatives: Electric Power - Energy  

Office of Scientific and Technical Information (OSTI)

Energy Management Expertise Energy Management Expertise Pumping System Assessment Tool Qualification PSAT helps users assess energy savings opportunities in pumping systems, relying on field measurements of flow rate, head, and either motor power or current to perform the assessment. AIRMaster+ Qualification AirMaster+ provides comprehensive information on assessing compressed AirMaster+ air systems, including modeling, existing and future system upgrades, and savings and effectiveness of energy efficiency measures. Processing Heating Assessment and Survey Tool Qualification (PHAST) PHAST assists users to survey process heating equipment and identify the most energy-intensive equipment and to perform energy (heat) balances on furnaces to identify and reduce non-productive energy use

Note: This page contains sample records for the topic "motor power rating" 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

Dual-circuit segmented rail phased induction motor  

DOE Patents (OSTI)

An improved linear motor utilizes two circuits, rather that one circuit and an opposed plate, to gain efficiency. The powered circuit is a flat conductive coil. The opposed segmented rail circuit is either a plurality of similar conductive coils that are shorted, or a plurality of ladders formed of opposed conductive bars connected by a plurality of spaced conductors. In each embodiment, the conductors are preferably cables formed from a plurality of intertwined insulated wires to carry current evenly.

Marder, Barry M. (Albuquerque, NM); Cowan, Jr., Maynard (Albuquerque, NM)

2002-01-01T23:59:59.000Z

442

Motor Control Center End-of-Expected-Life Guidance  

Science Conference Proceedings (OSTI)

This report presents information and recommendations related to end-of-life considerations for motor control centers (MCCs) in use at nuclear power plants. Typically an MCC, as a unit, does not reach an end of expected lifeit is the failure of MCC subcomponents that creates maintenance program challenges and leads to MCC inoperability. Therefore, a major focus of the report is on expected life, diagnostics, and logistics aspects of the various MCC subcomponents such as relays, transformers, ...

2013-12-18T23:59:59.000Z

443

Analysis of hunting in Synchronous Hysteresis Motor  

E-Print Network (OSTI)

The Synchronous Hysteresis Motor has an inherent instability when it is used to drive a gyroscope wheel. The motor ideally should spin at a constant angular velocity, but it instead sporadically oscillates about synchronous ...

Truong, Cang Kim, 1979-

2004-01-01T23:59:59.000Z

444

Hybrid vehicle motor alignment - Energy Innovation Portal  

A rotor of an electric motor for a motor vehicle is aligned to an axis of rotation for a crankshaft of an internal combustion engine having an internal combustion ...

445

Electric Motor Predictive Maintenance: Draft Guidelines  

Science Conference Proceedings (OSTI)

Predictive Maintenance can enhance the early detection and avoidance of incipient equipment failures in electric motors. This report provides draft guidelines to support the development of electric motor predictive maintenance (EMPM) programs at utility sites.

1997-10-16T23:59:59.000Z

446

Self-bearing motor design & control  

E-Print Network (OSTI)

This thesis presents the design, implementation and control of a new class of self-bearing motors. The primary thesis contributions include the design and experimental demonstration of hysteresis self-bearing motors, novel ...

Imani Nejad, Mohammad

2013-01-01T23:59:59.000Z

447

Estimating electricity storage power rating and discharge duration for utility transmission and distribution deferral :a study for the DOE energy storage program.  

DOE Green Energy (OSTI)

This report describes a methodology for estimating the power and energy capacities for electricity energy storage systems that can be used to defer costly upgrades to fully overloaded, or nearly overloaded, transmission and distribution (T&D) nodes. This ''sizing'' methodology may be used to estimate the amount of storage needed so that T&D upgrades may be deferred for one year. The same methodology can also be used to estimate the characteristics of storage needed for subsequent years of deferral.

Eyer, James M. (Distributed Utility Associates, Livermore, CA); Butler, Paul Charles; Iannucci, Joseph J., Jr. (,.Distributed Utility Associates, Livermore, CA)

2005-11-01T23:59:59.000Z

448

NEW MOTOR DESIGN CONCEPT FOR ENERGY SAVING APPLIED TO  

E-Print Network (OSTI)

SHARK, NEW MOTOR DESIGN CONCEPT FOR ENERGY SAVING APPLIED TO SWITCHED RELUCTANCE MOTOR by Ana of the cylindrical and Shark air gap Switched Reluctance Motors and their assistance during the experimental work with other motor technologies such

449

Design and performance evaluation of an electric go-kart and custom permanent magnet brushless DC motor  

E-Print Network (OSTI)

This undergraduate thesis documents the design considerations and specifications of building a personal battery-powered go-kart. This includes designing and building a custom brushless DC motor for use in the drivetrain. ...

Davis, Eli Marc

2012-01-01T23:59:59.000Z

450

Power Spectrum Analysis of LMSU (Lomonosov Moscow State University) Nuclear Decay-Rate Data: Further Indication of r-Mode Oscillations in an Inner Solar Tachocline  

E-Print Network (OSTI)

This article presents a power-spectrum analysis of 2,350 measurements of the $^{90}$Sr/$^{90}$Y decay process acquired over the interval 4 August 2002 to 6 February 2009 at the Lomonosov Moscow State University (LMSU). As we have found for other long sequences of decay measurements, the power spectrum is dominated by a very strong annual oscillation. However, we also find a set of low-frequency peaks, ranging from 0.26 year$^{-1}$ to 3.98 year$^{-1}$, which are very similar to an array of peaks in a power spectrum formed from Mt Wilson solar diameter measurements. The Mt Wilson measurements have been interpreted in terms of r-mode oscillations in a region where the sidereal rotation frequency is 12.08 year$^{-1}$. We find that the LMSU measurements may also be attributed to the same type of r-mode oscillations in a solar region with the same sidereal rotation frequency. We propose that these oscillations occur in an inner tachocline that separates the radiative zone from a more slowly rotating solar core.

Peter A. Sturrock; Alexander G. Parkhomov; Ephraim Fischbach; Jere H. Jenkins

2012-03-14T23:59:59.000Z

451

Measuring Devices: Compressed Natural Gas Retail Motor ...  

Science Conference Proceedings (OSTI)

Compressed Natural Gas Retail Motor-Fuel Dispensers. ... Hydrogen Measuring Devices; Liquefied Petroleum Gas Liquid-Measuring Devices; ...

2010-10-05T23:59:59.000Z

452

Motorized control for mirror mount apparatus  

DOE Patents (OSTI)

A motorized control and automatic braking system for adjusting mirror mount apparatus is disclosed. The motor control includes a planetary gear arrangement to provide improved pitch adjustment capability while permitting a small packaged design. The motor control for mirror mount adjustment is suitable for laser beam propagation applications. The brake is a system of constant contact, floating detents which engage the planetary gear at selected between-teeth increments to stop rotation instantaneously when the drive motor stops.

Cutburth, Ronald W. (Tracy, CA)

1989-01-01T23:59:59.000Z

453

Advanced Electric Motor Predictive Maintenance Project  

Science Conference Proceedings (OSTI)

EPRI sponsored the three-year Advanced Electric Motor Predictive Maintenance (AEMPM) project in 2000 to increase the effectiveness of motor maintenance at a time when utilities were in a state of declining motor knowledge due to downsizing and restructuring. The project identified areas for improvement that were common to most utilities and selected appropriate measures to address these concerns. Areas addressed include documenting motor knowledge, increasing utility confidence in newer technologies and ...

2003-05-28T23:59:59.000Z

454

Retail Motor-Fuel Dispensers and Consoles  

Science Conference Proceedings (OSTI)

Retail Motor-Fuel Dispensers and Consoles. Purpose: This 5-day RMFD course provides participants with the knowledge ...

2013-01-11T23:59:59.000Z

455

Coupling between motor proteins determines dynamic behaviors of motor protein assemblies  

E-Print Network (OSTI)

Coupling between motor proteins determines dynamic behaviors of motor protein assemblies Jonathan W of intracellular cargos by multiple microtubule motor proteins is believed to be a common and significant phenomenon in vivo, yet signatures of the microscopic dynamics of multiple motor systems are only now

456

Rate Schedule CV-TPT7  

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

OF ENERGY WESTERN AREA POWER ADMINISTRATION CENTRAL VALLEY PROJECT SCHEDULE OF RATE FOR TRANSMISSION OF WESTERN POWER BY OTHERS Effective: October 1, 2011, through September 30,...

457

Definition: Facility Rating | Open Energy Information  

Open Energy Info (EERE)

any equipment comprising the facility.1 Related Terms reactive power, equipment rating, power, smart grid References Glossary of Terms Used in Reliability Standards An inl...

458

Ameren Illinois (Electric) - Custom, HVAC, and Motor Business...  

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

Custom, HVAC, and Motor Business Efficiency Incentives Ameren Illinois (Electric) - Custom, HVAC, and Motor Business Efficiency Incentives Eligibility Commercial Industrial...

459

Improved motors for utility applications. Volume 2. Industry assessment study. Final report  

SciTech Connect

Auxiliary drive motor failures in electric utility applications result in large repair costs and, energy replacement costs. In order to assess the motor reliability experience of the utility industry and identify specific problem areas, information or more than 4800 motors at 132 generating units owned by 56 utilities was collected. The computerized database encompasses all fuel sources, geographic factors and motor manufacturers. Analysis of the data, field interviews with utilities across the country and technical judgment were used to identify the major factors influencing motor reliability. In total, 1221 failures were reported which represents a rate of 4.6% failure per motor per year. Several utilities reported experience as good as 1 or 2% and others as poor as 12%. Although all manufacturers can supply reliable equipment for most applications, failures of specific components in certain specific applications appear to be associated with specific manufacturers. However, overall, 22% of all reported failures were attributed to winding failure and 13% to sleeve bearings. Numerous examples of misapplication were discovered such as the horizontal motor which was vertically mounted by an OEM, inadequately balanced hydraulic thrust loads in a packaged motor/pump system and inappropriate enclosure specified for a motor located outdoors.The internal procedures and practices of those utilities which had particularly low failure rate experience included such factors as, stringent specifications, objective purchasing policies, adequate record keeping and preventative maintenance programs. Auxiliary large drive motor failures are estimated to cost the average utility over $350,000 per unit per year for alternate energy source during outages. Future cooperative efforts by the manufacturers, the A and E firms, the OEM's and the utilities could significantly reduce this value.

Mighdoll, P.; Bloss, R.P.; Hayashi, F.

1982-10-01T23:59:59.000Z

460

Total Cost of Motor-Vehicle Use  

E-Print Network (OSTI)

the use of Persian-Gulf oil by motor vehicles The sociallye r s i a n - G u l f Oil f o r Motor Vehicles 16. T h e C ofor motor vehicles: lost consumer surplus in other oil-

Delucchi, Mark A.

1996-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "motor power rating" 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

Magnetic tweezers to study DNA motors  

E-Print Network (OSTI)

Magnetic tweezers to study DNA motors Maria Mañosas Ritort lab UB Barcelona Croquette-Bensimon lab ENS France #12;· Introduction to MT (magnetic tweezers) · Applications: 1. Tracking DNA motors: (i) Helicases (ii) Annealing motor 2. Studying a multiprotein system: DNA replication Outline #12;· Atomic force

Ritort, Felix

462

Thermodynamics and Kinetics of a Brownian Motor  

E-Print Network (OSTI)

Thermodynamics and Kinetics of a Brownian Motor R. Dean Astumian Nonequilibrium fluctuations particle separation and the design of molecular motors and pumps. A small particle in a liquid is subject in conjunction with an- isotropy to drive a motor in the context of a "ratchet and pawl" device shrunk to micro

Linke, Heiner

463

INDUCTION MOTOR FAULT DIAGNOSTIC AND MONITORING METHODS  

E-Print Network (OSTI)

INDUCTION MOTOR FAULT DIAGNOSTIC AND MONITORING METHODS by Aderiano M. da Silva, B.S. A Thesis;i Abstract Induction motors are used worldwide as the "workhorse" in industrial applications material. However, induction motor faults can be detected in an initial stage in order to prevent

Povinelli, Richard J.

464

Rate Adjustments and Public Involvement  

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

Rate Adjustments and Public Involvement Documents Rate Adjustments and Public Involvement Documents CRSP Transmission 9/16/2013 WAPA-161 FRN, CRSP transmission and ancillary services rates extension Letter announcing two-year extension to CRSP transmission and ancillary services rates Letter announcing revised CRSP transmission rates for FY 2014 Accompanying calculation table for FY 2014 CRSP transmission rate letter Letter announcing revised CRSP transmission rates for FY 2013 Letter announcing revised CRSP transmission rates for FY 2012 Letter announcing revised CRSP transmission rates for FY 2011 Letter announcing revised CRSP transmission rates for FY 2010 SLCA/IP 9/16/2013 WAPA-161 FRN, SLCA/IP firm power rate extension Letter announcing two-year extension to SLCA/IP firm power rate SLCA/IP Tentative Rate Adjustment Schedule