Sample records for dynein motor domain

  1. Dynein Motor Domain Shows Ring-Shaped Motor, Buttress

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (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...

  2. Dynein Motor Domain Shows Ring-Shaped Motor, Buttress

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA :Work with Jefferson LabDynein Motor Domain ShowsDynein

  3. Dynein Motor Domain Shows Ring-Shaped Motor, Buttress

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA :Work with Jefferson LabDynein Motor Domain Shows

  4. Dynein Motor Domain Shows Ring-Shaped Motor, Buttress

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA :Work with Jefferson LabDynein Motor Domain

  5. Dynein Motor Domain Shows Ring-Shaped Motor, Buttress

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadapInactiveVisitingContract ManagementDiscovering HowAnaDynamic Switching of theDynein Motor

  6. Dynein Motor Domain Shows Ring-Shaped Motor, Buttress

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadapInactiveVisitingContract ManagementDiscovering HowAnaDynamic Switching of theDynein

  7. Dynein Motor Domain Shows Ring-Shaped Motor, Buttress

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA :Work with Jefferson Lab |NuclearDynamicreversedDynein

  8. Molecular dissection of the roles of nucleotide binding and hydrolysis in dynein's AAA domains

    E-Print Network [OSTI]

    Vale, Ronald D.

    Molecular dissection of the roles of nucleotide binding and hydrolysis in dynein's AAA domains (ATPase associated with various cellular activities) domains that are thought to bind nucleotide; the role of nucleotide binding and hydrolysis in each of these four AAA domains has constituted an important and unre

  9. Dynein Motor Domain Shows Ring-Shaped Motor, Buttress

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA :Work with Jefferson Lab

  10. How Dynein Binds to Microtubules

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh School football Highdefault SignInstitute /Do Wind TurbinesHow Dynein

  11. Crystal structure of the Candida albicans Kar3 kinesin motor domain fused to maltose-binding protein

    SciTech Connect (OSTI)

    Delorme, Caroline; Joshi, Monika [Department of Biomedical and Molecular Sciences, Queen's University, Kingston, ON, Canada K7L 3N6 (Canada)] [Department of Biomedical and Molecular Sciences, Queen's University, Kingston, ON, Canada K7L 3N6 (Canada); Allingham, John S., E-mail: allinghj@queensu.ca [Department of Biomedical and Molecular Sciences, Queen's University, Kingston, ON, Canada K7L 3N6 (Canada)

    2012-11-30T23:59:59.000Z

    Highlights: Black-Right-Pointing-Pointer The Candida albicans Kar3 motor domain structure was solved as a maltose-binding protein fusion. Black-Right-Pointing-Pointer The electrostatic surface and part of the ATPase pocket of the motor domain differs markedly from other kinesins. Black-Right-Pointing-Pointer The MBP-Kar3 interface highlights a new site for intramolecular or intermolecular interactions. -- Abstract: In the human fungal pathogen Candida albicans, the Kinesin-14 motor protein Kar3 (CaKar3) is critical for normal mitotic division, nuclear fusion during mating, and morphogenic transition from the commensal yeast form to the virulent hyphal form. As a first step towards detailed characterization of this motor of potential medical significance, we have crystallized and determined the X-ray structure of the motor domain of CaKar3 as a maltose-binding protein (MBP) fusion. The structure shows strong conservation of overall motor domain topology to other Kar3 kinesins, but with some prominent differences in one of the motifs that compose the nucleotide-binding pocket and the surface charge distribution. The MBP and Kar3 modules are arranged such that MBP interacts with the Kar3 motor domain core at the same site where the neck linker of conventional kinesins docks during the 'ATP state' of the mechanochemical cycle. This site differs from the Kar3 neck-core interface in the recent structure of the ScKar3Vik1 heterodimer. The position of MBP is also completely distinct from the Vik1 subunit in this complex. This may suggest that the site of MBP interaction on the CaKar3 motor domain provides an interface for the neck, or perhaps a partner subunit, at an intermediate state of its motile cycle that has not yet been observed for Kinesin-14 motors.

  12. R326 Dispatch Nuclear migration: Cortical anchors for cytoplasmic dynein

    E-Print Network [OSTI]

    dynein, and provide a critical link in understanding the basis of nuclear migration in yeast. The nuclearR326 Dispatch Nuclear migration: Cortical anchors for cytoplasmic dynein Kerry Bloom Nuclear body that rolls around at random inside the sack of a eukaryotic cell. Controlled nuclear movements

  13. ?-Tubulin and the C-terminal motor domain kinesin-like protein, KLPA, function in the establishment of spindle bipolarity in Aspergillus nidulans

    E-Print Network [OSTI]

    Prigozhina, Natalie L.; Walker, Richard A.; Oakley, C. Elizabeth; Oakley, Berl R.

    2001-10-01T23:59:59.000Z

    Previous research has found that a ?-tubulin mutation inSchizosaccharomyces pombe is synthetically lethal with a deletion of the C-terminal motor domain kinesin-like protein genepkl1, but the lethality of the double mutant ...

  14. Microtubule organization by kinesin motors and microtubule crosslinking protein MAP65 This article has been downloaded from IOPscience. Please scroll down to see the full text article.

    E-Print Network [OSTI]

    Ross, Jennifer

    method for nanoscale and hierarchical organization harnessed by scientists and engineers interested, that use the energy stored in nucleotide triphosphates to create motion and force. Motor proteins often-scale muscle contraction. In the kidneys and intestines, axonemal dynein motors work in tandem to wave cilia

  15. Kinematic Motor Learning Wolfram Schenck

    E-Print Network [OSTI]

    Moeller, Ralf

    Kinematic Motor Learning Wolfram Schenck Computer Engineering Group Faculty of Technology Bielefeld-521-106-6440 mail: wschenck@ti.uni-bielefeld.de Abstract This paper focuses on adaptive motor control in the kinematic domain. Several motor learning strategies from the literature are adopted to kinematic problems

  16. Mixed-domain performance model of the piezoelectric traveling-wave motor and the development of a two-sided device

    E-Print Network [OSTI]

    Glenn, Timothy Scott, 1971-

    2002-01-01T23:59:59.000Z

    In recognition of the growing consideration of piezoelectric traveling-wave motors as suitable replacements for small-scale electromagnetic motors, the present work addresses two parallel objectives: (1) to develop an ...

  17. Tug-of-war as a cooperative mechanism for bidirectional cargo transport by molecular motors

    E-Print Network [OSTI]

    Melanie J. I. MŁller; Stefan Klumpp; Reinhard Lipowsky

    2008-07-03T23:59:59.000Z

    Intracellular transport is based on molecular motors that pull cargos along cytoskeletal filaments. One motor species always moves in one direction, e.g. conventional kinesin moves to the microtubule plus end, while cytoplasmic dynein moves to the microtubule minus end. However, many cellular cargos are observed to move bidirectionally, involving both plus-end and minus-end directed motors. The presumably simplest mechanism for such bidirectional transport is provided by a tug-of-war between the two motor species. This mechanism is studied theoretically using the load-dependent transport properties of individual motors as measured in single-molecule experiments. In contrast to previous expectations, such a tug-of-war is found to be highly cooperative and to exhibit seven different motility regimes depending on the precise values of the single motor parameters. The sensitivity of the transport process to small parameter changes can be used by the cell to regulate its cargo traffic.

  18. A model for motor-mediated bidirectional transport along an antipolar microtubule bundle

    E-Print Network [OSTI]

    Congping Lin; Peter Ashwin; Gero Steinberg

    2012-11-21T23:59:59.000Z

    Long-distance bidirectional transport of organelles depends on the motor proteins kinesin and dynein. Using quantitative data obtained from a fungal model system, we previously developed ASEP-models of bidirectional motion of motors along unipolar microtubules (MTs) near the cell ends of the elongated hyphal cells (herein referred as "unipolar section"). However, recent quantitative live cell imaging in this system has demonstrated that long-range motility of motors and their endosomal cargo mainly occurs along extended antipolar microtubule bundles within the central part of the cell (herein referred to as "bipolar section"). Dynein and kinesin-3 motors coordinate their activity to move early endosomes (EEs) in a bidirectional fashion, with dynein mediating retrograde motility along the unipolar section near the cell poles, whereas kinesin-3 is responsible for bidirectional motions along the antipolar section. Here we extend our modelling approach to simulate bidirectional motility along an antipolar microtubule bundle. In our model, cargos (particles) change direction on each MT with a turning rate $\\Omega$ and the MTs are linked to each other at the minus ends where particles can hop between MTs with a rate $q_1$ (obstacle-induced switching rate) or $q_2$ (end-induced switching rate). By numerical simulations and mean-field approximations, we investigate the distribution of particles along the MTs for different overall densities $\\Theta$. We find that even if $\\Theta$ is low, the system can exhibit shocks in the density profiles near plus and minus ends caused by queueing of particles. We also discuss how the switching rates $q_{1,2}$ influence the type of motor that dominates the active transport in the bundle.

  19. Tug-of-war of molecular motors: the effects of uneven load sharing

    E-Print Network [OSTI]

    Sebastian Bouzat; Fernando Falo

    2011-11-29T23:59:59.000Z

    We analyze theoretically the problem of cargo transport along microtubules by motors of two species with opposite polarities. We consider two different one-dimensional models previously developed in the literature. On the one hand, a quite widespread model which assumes equal force sharing, here referred to as mean field model (MFM). On the other hand, a stochastic model (SM) which considers individual motor-cargo links. We find that in generic situations the MFM predicts larger cargo mean velocity, smaller mean run time and less frequent reversions than the SM. These phenomena are found to be consequences of the load sharing assumptions and can be interpreted in terms the probabilities of the different motility states. We also explore the influence of the viscosity in both models and the role of the stiffness of the motor-cargo links within the SM. Our results show that the mean cargo velocity is independent of the stiffness while the mean run time decreases with such a parameter. We explore the case of symmetric forward and backward motors considering kinesin- 1 parameters, and the problem of transport by kinesin-1 and cytoplasmic dyneins considering two different sets of parameters previously proposed for dyneins.

  20. Electric Motors

    Broader source: Energy.gov [DOE]

    Section 313 of the Energy Independence and Security Act (EISA) of 2007 raised Federal minimum efficiency standards for general-purpose, single-speed, polyphase induction motors of 1 to 500 horsepower (hp). This new standard took effect in December 2010. The new minimum efficiency levels match FEMP's performance requirement for these motors.

  1. Coupling of Two Motor Proteins: A New Motor Can Move Faster Evgeny B. Stukalin, Hubert Phillips III, and Anatoly B. Kolomeisky

    E-Print Network [OSTI]

    Coupling of Two Motor Proteins: A New Motor Can Move Faster Evgeny B. Stukalin, Hubert Phillips III February 2005; published 13 June 2005) We study the effect of a coupling between two motor domains in highly processive motor protein complexes. A simple stochastic discrete model, in which the two parts

  2. Stepping and crowding of molecular motors: statistical kinetics from an exclusion process perspective

    E-Print Network [OSTI]

    Luca Ciandrini; M. Carmen Romano; A. Parmeggiani

    2014-05-26T23:59:59.000Z

    Motor enzymes are remarkable molecular machines that use the energy derived from the hydrolysis of a nucleoside triphosphate to generate mechanical movement, achieved through different steps that constitute their kinetic cycle. These macromolecules, nowadays investigated with advanced experimental techniques to unveil their molecular mechanisms and the properties of their kinetic cycles, are implicated in many biological processes, ranging from biopolymerisation (e.g. RNA polymerases and ribosomes) to intracellular transport (motor proteins such as kinesins or dyneins). Although the kinetics of individual motors is well studied on both theoretical and experimental grounds, the repercussions of their stepping cycle on the collective dynamics still remains unclear. Advances in this direction will improve our comprehension of transport process in the natural intracellular medium, where processive motor enzymes might operate in crowded conditions. In this work, we therefore extend the current statistical kinetic analysis to study collective transport phenomena of motors in terms of lattice gas models belonging to the exclusion process class. Via numerical simulations, we show how to interpret and use the randomness calculated from single particle trajectories in crowded conditions. Importantly, we also show that time fluctuations and non-Poissonian behavior are intrinsically related to spatial correlations and the emergence of large, but finite, clusters of co-moving motors. The properties unveiled by our analysis have important biological implications on the collective transport characteristics of processive motor enzymes in crowded conditions.

  3. Premium Efficient Motors

    E-Print Network [OSTI]

    Moser, P. R.

    1984-01-01T23:59:59.000Z

    Premium efficient motors are available which convert electrical energy into mechanical energy with fewer losses than the more standard motors. The fewer losses in these motors are due to changes in the motor design and improved manufacturing methods...

  4. Advanced Motors

    SciTech Connect (OSTI)

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

    2012-12-14T23:59:59.000Z

    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, √?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬Ę√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?Motors and Generators for the 21st Century√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬Ę√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬Ě. 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.

  5. Emergent collective properties of many-motor systems in one dimension

    E-Print Network [OSTI]

    Anton Souslov; Paul M. Goldbart

    2015-05-29T23:59:59.000Z

    Along a microtubule, certain active motors propel themselves in one direction whereas others propel themselves in the opposite direction. For example, the cargo transporting motor proteins dynein and kinesin propel themselves towards the so-called plus- and minus-ends of the microtubule, respectively, and in so doing are able to pass one another, but not without interacting. We address the emergent collective behavior of systems composed of many motors, some propelling towards the plus-end and others propelling towards the minus-end. To do this, we used an analogy between this strongly interacting, far-from-equilibrium, classical stochastic many-motor system and a certain quantum-mechanical many-body system evolving in imaginary time. We apply well-known methods from quantum many-body theory, including self-consistent mean-field theory and bosonization, to shed light on phenomena exhibited by the many-motor system such as structure formation and the dynamics of collective modes at low-frequencies and long-wavelengths. In particular, via the bosonized description we find analogs of chiral Luttinger liquids, as well as a qualitative transition in the nature of the low-frequency modes---from propagating to purely dissipative---controlled by density and interaction strength.

  6. Implementing Motor Decision Plans

    E-Print Network [OSTI]

    Elliott, R. N.

    The first step to reducing energy costs and increasing reliability in motors is to establish a motor plan. A motor plan allows decisions to be made in advance of motor failure, and increases the options available. By contrast, most motor decisions...

  7. Edinburgh Motor Assessment (EMAS)†

    E-Print Network [OSTI]

    Bak, Thomas

    2013-12-01T23:59:59.000Z

    Edinburgh Motor Assessment (EMAS) is a brief motor screening test, specifically designed for assessment of patients with dementia, aphasia and other cognitive disorders. It focuses, therefore, on those motor symptoms, ...

  8. Policy Learning for Motor Skills Jan Peters1,2

    E-Print Network [OSTI]

    Schaal, Stefan

    the separation of the main problems of motor skill acquisition, refinement and control. Instead of either havingPolicy Learning for Motor Skills Jan Peters1,2 and Stefan Schaal2,3 1 Max-Planck Institute-dimensional domains of manipulator robotics, or even the new upcoming trend of humanoid robotics, and usually scaling

  9. MOTOR BIKES, MOPEDS, AND MOTOR SCOOTERS Registration and Operation

    E-Print Network [OSTI]

    Lozano-Robledo, Alvaro

    6. 6.1 MOTOR BIKES, MOPEDS, AND MOTOR SCOOTERS Registration and Operation Motor Bikes, Mopeds, and Motor Scooters are defined as motor vehicles and are subject to all regulations governing motor vehicle operation on the grounds of the University. Such a motor vehicle owned and operated by a member

  10. NXT DC Motor Frequency Response Last updated 11/04/12 Copyright Paul Oh

    E-Print Network [OSTI]

    Oh, Paul

    Response Previous labs and lectures investigated a system's step response. One could observe time- domain-domain. Hence concepts on attenuation and phase lag are thus presented. Preamble: Summary of Step Response to any signal. Figure A: Step response of NXT DC motor to a motor command of 75% power Figure B: Simulink

  11. Concrete Domains

    E-Print Network [OSTI]

    Kahn, Gilles; Plotkin, Gordon

    1993-01-01T23:59:59.000Z

    This paper introduces the theory of a particular kind of computation domains called concrete domains. The purpose of this theory is to find a satisfactory framework for the notions of coroutine computation and sequentiality ...

  12. Implementing Motor Management

    E-Print Network [OSTI]

    Colip, R. L.

    Electric motors account for sixty five percent of industrial energy consumed today. There are many opportunities to conserve electricity by using more energy efficient motors and drives. Proven technologies and practices can reduce energy...

  13. Stepping Motor Control System

    E-Print Network [OSTI]

    Larson, Noble G.

    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 ...

  14. Sensorless, Online Motor Diagnostics

    E-Print Network [OSTI]

    Yazici, Birsen

    of faults or incipi- ent faults in electric motor drives: Sensorless torque measurement Direct detection as the motor. Exten- sive online monitoring of the motors can lead to greater plant availability, extended over the last several years, ade- quate data processing capability is now available on cost

  15. Quantum motor and future

    E-Print Network [OSTI]

    Evgeny G. Fateev

    2013-01-20T23:59:59.000Z

    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.

  16. Motor Control STEVEN P. WISE

    E-Print Network [OSTI]

    Shadmehr, Reza

    Motor Control STEVEN P. WISE National Institute of Mental Health REZA SHADMEHR Johns Hopkins University I. What Controls Movement II. What the Motor System Controls III. Mechanisms of Motor Control IV. Motor Memory V. Flexibility in Motor Control VI. Evolution of the Motor System GLOSSARY agonist A muscle

  17. Motor/generator

    DOE Patents [OSTI]

    Hickam, Christopher Dale (Glasford, IL)

    2008-05-13T23:59:59.000Z

    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.

  18. Replacing Motors Counting Savings: Results from a 100 Motor Study

    E-Print Network [OSTI]

    Kaufman, N. M.

    2006-01-01T23:59:59.000Z

    REPLACING MOTORS, COUNTING SAVINGS: RESULTS FROM A 100 MOTOR STUDY Nicole M. Kaufman Motor Systems Engineer Advanced Energy Raleigh, NC ABSTRACT Software tools such as MotorMaster+ aid facility personnel in conducting payback... analyses for replacing motors. These tools make assumptions on the motorsí operational efficiency in their calculations. By observing 100 pre-EPCA (Energy Policy & Conservation Act) motors in operation, removing them from service and conducting IEEE...

  19. Replacing Motors Counting Savings: Results from a 100 Motor Study†

    E-Print Network [OSTI]

    Kaufman, N. M.

    2006-01-01T23:59:59.000Z

    REPLACING MOTORS, COUNTING SAVINGS: RESULTS FROM A 100 MOTOR STUDY Nicole M. Kaufman Motor Systems Engineer Advanced Energy Raleigh, NC ABSTRACT Software tools such as MotorMaster+ aid facility personnel in conducting payback... analyses for replacing motors. These tools make assumptions on the motorsí operational efficiency in their calculations. By observing 100 pre-EPCA (Energy Policy & Conservation Act) motors in operation, removing them from service and conducting IEEE...

  20. Parametric electric motor study

    SciTech Connect (OSTI)

    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

    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.

  1. Energy Efficient Motors

    E-Print Network [OSTI]

    Hoffmeyer, W.

    1982-01-01T23:59:59.000Z

    , and how to interpret efficiency data. A perspective is given from which to evaluate available energy efficient motor offerings for a given application....

  2. Hybrid vehicle motor alignment

    DOE Patents [OSTI]

    Levin, Michael Benjamin (Ann Arbor, MI)

    2001-07-03T23:59:59.000Z

    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.

  3. Neural correlates underlying motor map plasticity and skilled motor behavior

    E-Print Network [OSTI]

    Ramanathan, Dhakshin

    2007-01-01T23:59:59.000Z

    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

  4. Ontario Hydro Motor Efficiency Study

    E-Print Network [OSTI]

    Dautovich, D. R.

    1980-01-01T23:59:59.000Z

    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...

  5. Motor Vehicle Record Procedure Objective

    E-Print Network [OSTI]

    Kirschner, Denise

    Motor Vehicle Record Procedure Objective Outline the procedure for obtaining motor vehicle record (MVR) through Fleet Services. Vehicle Operator Policy 3. Operators with 7 or more points on their motor vehicle record

  6. Stepping motor controller

    DOE Patents [OSTI]

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

    1982-07-02T23:59:59.000Z

    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.

  7. Structural and functional adaptations of the Auditory-Motor System : insights from expertise & disorder

    E-Print Network [OSTI]

    Halwani, Gus F. (Gus Fizt)

    2012-01-01T23:59:59.000Z

    While evidence from clinical and functional neuroimaging domains converges on a notion that auditory-motor networks can be remodeled functionally and structurally in response to experiences, studies that seek to evaluate ...

  8. Asymptotic Analysis of Cooperative Molecular Motor System

    E-Print Network [OSTI]

    Durrett, Richard

    Mesoscale Model for Collections of Molecular Motors Stochastic Asymptotic Techniques #12;Molecular Motors

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

    DOE Patents [OSTI]

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

    1995-10-24T23:59:59.000Z

    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.

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

    DOE Patents [OSTI]

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

    1995-01-01T23:59:59.000Z

    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.

  11. System and method for motor parameter estimation

    DOE Patents [OSTI]

    Luhrs, Bin; Yan, Ting

    2014-03-18T23:59:59.000Z

    A system and method for determining unknown values of certain motor parameters includes a motor input device connectable to an electric motor having associated therewith values for known motor parameters and an unknown value of at least one motor parameter. The motor input device includes a processing unit that receives a first input from the electric motor comprising values for the known motor parameters for the electric motor and receive a second input comprising motor data on a plurality of reference motors, including values for motor parameters corresponding to the known motor parameters of the electric motor and values for motor parameters corresponding to the at least one unknown motor parameter value of the electric motor. The processor determines the unknown value of the at least one motor parameter from the first input and the second input and determines a motor management strategy for the electric motor based thereon.

  12. Motor processes 1 Motor Processes in Mental Rotation1

    E-Print Network [OSTI]

    Paris-Sud XI, Universitť de

    Motor processes 1 Motor Processes in Mental Rotation1 1 M.W. wishes to thank the LPPA for its are at least in part guided by motor processes, even in the case of images of abstract objects rather than of a specific motor action. We directly test the hypothesis by means of a dual-task paradigm in which subjects

  13. Justification for Energy Efficient Motors

    E-Print Network [OSTI]

    Buschart, R. J.

    1981-01-01T23:59:59.000Z

    This paper presents the results of a study of Energy Efficient (or EE) motors in NEMA frame sizes, (1-200 HP). It examines the economics of using EE motors for new motor requirements, as replacements for motors - instead of rewinding...

  14. Markov Process of Muscle Motors

    E-Print Network [OSTI]

    Yu. Kondratiev; E. Pechersky; S. Pirogov

    2007-06-20T23:59:59.000Z

    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.

  15. MotorWeek

    ScienceCinema (OSTI)

    None

    2013-04-19T23:59:59.000Z

    In 2008, PBS's MotorWeek, television's original automotive magazine, visited Argonne's Transportation Technology R&D Center "to learn what it really takes to make clean power sources a viable reality."

  16. Linear Motor Powered Transportation

    E-Print Network [OSTI]

    Thornton, Richard D.

    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. ...

  17. MotorMaster+ International | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    of the capabilities and features of MotorMaster+. However, users can evaluate repairreplacement options on a broader range of motors, including 60 hertz (Hz) motors tested under...

  18. Motor Control CTIO 60 inches CHIRON

    E-Print Network [OSTI]

    Tokovinin, Andrei A.

    Motor Control CTIO 60 inches CHIRON CHI60HF8.1 La Serena, December 2010 #12;Contents..............................................................................................................................3 1. Image Slicer motor..............................................................................................................5 2. Focus motor

  19. Sensory-Motor Integration and Control

    E-Print Network [OSTI]

    Welch, Dan Bruce

    2011-01-01T23:59:59.000Z

    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

  20. 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

  1. Brushless Motor Controller Report Spring 2010

    E-Print Network [OSTI]

    Ruina, Andy L.

    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

  2. Design and prototyping methods for brushless motors and motor control

    E-Print Network [OSTI]

    Colton, Shane W. (Shane William)

    2010-01-01T23:59:59.000Z

    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 ...

  3. Bent shaft motor

    DOE Patents [OSTI]

    Benavides, G.L.

    1998-05-05T23:59:59.000Z

    A nonelectromagnetic motor comprising a base, a bent shaft which is rotatable 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. 11 figs.

  4. Bent shaft motor

    DOE Patents [OSTI]

    Benavides, Gilbert L. (Albuquerque, NM)

    1998-01-01T23:59:59.000Z

    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.

  5. Efficient, Inexpensive Motors: A New Trend in The Motors Market

    E-Print Network [OSTI]

    Wroblewksi, R. G.

    EFFICIENT, INEXPENSIVE MOTORS: A NEW TREND IN THE MOTORS MARKET Ronald G. Wroblewski, P.E. Trainer and Consultant ABSTRACT The Consortiwn for Energy Efficiency (CEE) has established criteria for premium-efficiency motors above the EPACf... standard. CEE has set a wrifonn efficiency benchmark that all market players (manufacturers, utilities, and end-users) can use. Some end-users however, have been reluctant to specify these motors because they think they are too expensive...

  6. Method for assessing motor insulation on operating motors

    DOE Patents [OSTI]

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

    1997-01-01T23:59:59.000Z

    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.

  7. Method for assessing motor insulation on operating motors

    DOE Patents [OSTI]

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

    1997-03-18T23:59:59.000Z

    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.

  8. Eminent Domain Law (Iowa)

    Broader source: Energy.gov [DOE]

    These regulations confer the power of eminent domain and describe procedures for exercising eminent domain in Iowa.

  9. DIFFUSION MEDIATED TRANSPORT AND THE BROWNIAN MOTOR

    E-Print Network [OSTI]

    DIFFUSION MEDIATED TRANSPORT AND THE BROWNIAN MOTOR David Kinderlehrer Center for Nonlinear in small viscous systems and provide brief illustrations to brownian motor or molecular rachet situations which are found in intracellular transport. Keywords: Brownian motor, molecular rachet, motor protein

  10. Evaluating High Efficiency Motor Retrofit

    E-Print Network [OSTI]

    Evans, T. A.

    1984-01-01T23:59:59.000Z

    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...

  11. DMBC: Domain Names & Web Hosting Domain Names

    E-Print Network [OSTI]

    Stowell, Michael

    DMBC: Domain Names & Web Hosting Domain Names Top Level Domains · .com · .net · .org · .edu · .gov.9% of the web-viewing audience is used to typing in. Chances are, a visitor will type in ".com" even if you tell and simple · Try to avoid dashes or underscores in the domain name unless there is no other option Web

  12. RMP Colloquia Modeling molecular motors

    E-Print Network [OSTI]

    JŁlicher, Frank

    The authors present general considerations and simple models for the operation of isothermal motors at small structural differences from the usual Carnot engines. Turning to more explicit models for a single motorRMP Colloquia Modeling molecular motors Frank Ju®licher,* Armand Ajdari, and Jacques Prost

  13. Highly Efficient Electric Motor Systems

    E-Print Network [OSTI]

    over wider operating range with same size motor Uses up to 40% less electricity NREL Energy Forum;Annual Serviceable Addressable Market (SAM) for >1hp non-hermetic motors NREL Energy Forum November 2009Highly Efficient Electric Motor Systems NREL Energy Forum November 2009 www.novatorque.com Emily

  14. Motor Speech Disorders in Neurodevelopmental

    E-Print Network [OSTI]

    Shoubridge, Eric

    4/14/13 1 Motor Speech Disorders in Neurodevelopmental Syndromes Shelley Velleman University many graduate and undergraduate research assistants at UMass, U of Louisville, and UVM 2 Motor Speech difference/insult ßSymptoms 3 Motor Speech Disorders Dysarthria: neurological bases ßresult of damage

  15. Magazine R729 Motor prediction

    E-Print Network [OSTI]

    Flanagan, Randy

    Magazine R729 Primer Motor prediction Daniel M. Wolpert* and J. Randall Flanagan The concept of motor prediction was first considered by Helmholtz when trying to understand how we localise visual position of the eye, predicted the gaze position based on a copy of the motor command acting on the eye

  16. MotorMaster database of three-phase electric motors

    SciTech Connect (OSTI)

    Stickney, B.L.

    1993-12-31T23:59:59.000Z

    Selecting the right motor for a new or replacement application used to be a daunting task. Making an intelligent choice involved a search through a stack of motor catalogs for information on efficiency, voltage, speed, horsepower, torque, service factor, power factor, frame type, and cost. The MotorMaster software package, available from the Washington State Energy Office, takes the drudgery out of motor selection by enabling rapid analysis of the most efficient and cost-effective single-speed three-phase induction motors. It has a built-in motor database, easy to use comparison and analysis features, and can calculate utility rebates and simple paybacks. By speeding the selection process and providing comprehensive economic justification for the final equipment choice, software tools like MotorMaster can become an important component of utility DSM programs. And as a bonus, wide use of such software may lead to more systematic and consistent use of energy efficient equipment.

  17. Wind motor applications for transportation

    SciTech Connect (OSTI)

    Lysenko, G.P.; Grigoriev, B.V.; Karpin, K.B. [Moscow Aviation Inst. (Russian Federation)

    1996-12-31T23:59:59.000Z

    Motion equation for a vehicle equipped with a wind motor allows, taking into account the drag coefficients, to determine the optimal wind drag velocity in the wind motor`s plane, and hence, obtain all the necessary data for the wind wheel blades geometrical parameters definition. This optimal drag velocity significantly differs from the flow drag velocity which determines the maximum wind motor power. Solution of the motion equation with low drag coefficients indicates that the vehicle speed against the wind may be twice as the wind speed. One of possible transportation wind motor applications is its use on various ships. A ship with such a wind motor may be substantially easier to steer, and if certain devices are available, may proceed in autonomous control mode. Besides, it is capable of moving within narrow fairways. The cruise speed of a sailing boat and wind-motored ship were compared provided that the wind velocity direction changes along a harmonic law with regard to the motion direction. Mean dimensionless speed of the wind-motored ship appears to be by 20--25% higher than that of a sailing boat. There was analyzed a possibility of using the wind motors on planet rovers in Mars or Venus atmospheric conditions. A Mars rover power and motor system has been assessed for the power level of 3 kW.

  18. Using MotorMaster to Track Motor Inventory and Analyze Purchasing Decisions

    E-Print Network [OSTI]

    Brown, M.; Meffort, W.

    2007-01-01T23:59:59.000Z

    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...

  19. How to Build a Motor

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Motor Sign In About | Careers | Contact | Investors | bpa.gov Search News & Us Expand News & Us Projects & Initiatives Expand Projects & Initiatives Finance & Rates Expand...

  20. Tesla Motors | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    465 million loan arrangement with Tesla Motors, Inc. to produce specially designed, all-electric plug-in vehicles; and to develop a manufacturing facility to produce battery...

  1. Evaluating High Efficiency Motor Retrofit†

    E-Print Network [OSTI]

    Evans, T. A.

    1984-01-01T23:59:59.000Z

    OPERATING COST Although It would seem that most peoPlel un derstand the re I atlonsh I p beneen the fIrst cost and operating cost for motors, that's not the case. The purchase price of a standard efficIency 50 HP enclosed motor I s about $2000. Operatl...Ife, the energy efficIent motor will save about $7100 - assum f ng power costs grow as forecasted. That's why the co nom J cs of Energy $aver motors are so attractIve. The savIngs, assuming continuous operatIon at a 5i/kWh power cost, range from $300 per year...

  2. Developing a Motor Management Policy at BASF

    E-Print Network [OSTI]

    Zickefoose, B.; Theising, T. R.

    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...

  3. 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

  4. COMMERICAL MOTOR VEHICLE OPERATOR EMPLOYMENT APPLICATION SUPPLEMENT

    E-Print Network [OSTI]

    Pilyugin, Sergei S.

    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

  5. Industrial motor repair in the United States

    SciTech Connect (OSTI)

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

    1994-09-01T23:59:59.000Z

    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.

  6. Verification of Motor Repair Quality

    E-Print Network [OSTI]

    Butler, K.

    Motor testing at Advanced Energy has shown that a motor that has not suffered irreparable damage as a result of failure can be repaired to perform as well as before the failure. But the only way to achieve the performance level of an energy...

  7. Cell Host & Microbe Adenovirus Transport via Direct

    E-Print Network [OSTI]

    Gross, Steven

    as a naked capsid using the microtubule motor cyto- plasmic dynein. How the dynein complex is recruited of viruses are instead consistent with trans- port by microtubule motors (Do® hner et al., 2005). Recent evidence has implicated cytoplasmic dynein in the translocation of herpes simplex virus, adenovirus

  8. Unique Lanthide-Free Motor Construction

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    of rare-earth elements E: Efficiency Partners Ames Laboratory: improved magnet properties NREL: motor thermal management ORNL: motor testing 2 Relevance - Objectives Overall...

  9. Magnetically Coupled Adjustable Speed Motor Drives

    SciTech Connect (OSTI)

    Not Available

    2008-07-01T23:59:59.000Z

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

  10. A Light Weight Rotary Double Pendulum: Maximizing the Domain of Attraction R. W. Brockett* and Hongyi Li*

    E-Print Network [OSTI]

    stiffness and a tendency to vibrate. 3) The motor is a low torque, completely integrated amplifier/motor, noise amplification, and undesirable vibration. 3) A reduction in the size of the domain of asymptotic feedback in exciting vibrations in unmodeled modes and the possibility of lightly damped oscillatory modes

  11. Piezoelectric wave motor

    DOE Patents [OSTI]

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

    2003-02-11T23:59:59.000Z

    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.

  12. Piezoelectric wave motor

    DOE Patents [OSTI]

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

    2001-07-17T23:59:59.000Z

    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.

  13. Submersible canned motor mixer pump

    DOE Patents [OSTI]

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

    1997-10-07T23:59:59.000Z

    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.

  14. Submersible canned motor transfer pump

    DOE Patents [OSTI]

    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

    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.

  15. Submersible canned motor mixer pump

    DOE Patents [OSTI]

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

    1997-01-01T23:59:59.000Z

    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.

  16. STEPS IN SLOW FLAGELLAR MOTOR ROTATION

    E-Print Network [OSTI]

    Leake, Mark C.

    STEPS IN SLOW FLAGELLAR MOTOR ROTATION Alexander D. Rowe1 , Yoshiyuki Sowa2, Mark C. Leake1+ -specific motors. Torque is generated by the interaction between stator complexes and FliG proteins revolution. CHIMERIC MOTOR: The stator units comprising the flagellar motors of the YS34 strain - used

  17. Total Economics of Energy Efficient Motors

    E-Print Network [OSTI]

    Nester, A. T.

    1984-01-01T23:59:59.000Z

    priced energy-efficient motor or a standard electric motor. It will also address the question of whether it is cost-effective to rewind an old motor which has failed or to replace it with a new energy-efficient motor....

  18. Motor Control Abnormalities in Parkinson's Disease

    E-Print Network [OSTI]

    Motor Control Abnormalities in Parkinson's Disease Pietro Mazzoni, Britne Shabbott, and Juan Camilo Corteīs Motor Performance Laboratory, The Neurological Institute, Columbia University, New York, New. Motor symptoms can also be described in terms of motor control, a level of description that explains how

  19. Recover Power with Hydraulic Motors

    E-Print Network [OSTI]

    Brennan, J. R.

    1982-01-01T23:59:59.000Z

    displacement device, the HPRM torque and speed are almost completely independent - unlike hydraulic power recovery turbines (centrifugal motors). Three screw HPRM's have low moments of inertia, operate at low vibration and noise levels and extract power...

  20. Segmented rail linear induction motor

    SciTech Connect (OSTI)

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

    1996-09-03T23:59:59.000Z

    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.

  1. Direct drive field actuator motors

    DOE Patents [OSTI]

    Grahn, A.R.

    1998-03-10T23:59:59.000Z

    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.

  2. Efficient Motor System Tools Sponsored by the DOE Motor Challenge Program†

    E-Print Network [OSTI]

    Blazewicz, S.; McCoy, G. A.; Olszewski, M.; Scheihing, P.

    1995-01-01T23:59:59.000Z

    motors and motor-dri ven equipment that wi 11 improve indus! ri al energy effic iency, producti vi ty and environmental performance. The overall goal is to increase the market penetration of energy-efficient industrial electric motor systems...

  3. Topological Domain Theory†

    E-Print Network [OSTI]

    Battenfeld, Ingo

    2008-01-01T23:59:59.000Z

    This thesis presents Topological Domain Theory as a powerful and flexible framework for denotational semantics. Topological Domain Theory models a wide range of type constructions and can interpret many computational features. Furthermore, it has...We begin by describing the categories of Topological Domain Theory, and their categorical structure. In particular, we recover the basic constructions of domain theory, such as products, function spaces, fixed points and recursive types, in the context of Topological Domain Theory....As a central contribution, we give a detailed account of how computational effects can be modelled in Topological Domain Theory. Following recent work of Plotkin and Power, who proposed to construct effect monads via free algebra functors, this is done by showing that free algebras for a large class of parametrised equational theories exist in Topological Domain Theory. These parametrised equational theories are expressive enough to generate most of the standard examples of effect monads. Moreover, the free algebras in Topological Domain Theory are obtained by an explicit inductive construction, using only basic topological and set-theoretical principles....We also give a comparison of Topological and Classical Domain Theory. The category of omega-continuous dcpos embeds into Topological Domain Theory, and we prove that this embedding preserves the basic domain-theoretic constructions in most cases. We show that the classical powerdomain constructions on omega-continuous dcpos, including the probabilistic powerdomain, can be recovered in Topological Domain Theory....Finally, we give a synthetic account of Topological Domain Theory. We show that Topological Domain Theory is a specific model of Synthetic Domain Theory in the realizability topos over Scott's graph model. We give internal characterisations of the categories of Topological Domain Theory in this realizability topos, and prove the corresponding categories to be internally complete and weakly small. This enables us to show that Topological Domain Theory can model the polymorphic lambda-calculus, and to obtain a richer collection of free algebras than those constructed earlier....In summary, this thesis shows that Topological Domain Theory supports a wide range of semantic constructions, including the standard domain-theoretic constructions, computational effects and polymorphism, all within a single setting....

  4. Submersible canned motor transfer pump

    DOE Patents [OSTI]

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

    1997-08-19T23:59:59.000Z

    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.

  5. United States Industrial Electric Motor Systems Market Opportunities...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    for Industry MotorMaster+ User Manual New Motor Systems Market Assessment AMO and LBNL are currently developing an update to the original Motor Systems Market Assessment. The...

  6. Mechanisms of motor activity regulation in axonal transport

    E-Print Network [OSTI]

    Reis, Gerald Feliz

    2008-01-01T23:59:59.000Z

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

  7. 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]

    Stanford University

    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

  8. How Dynein Binds to Microtubules

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC) EnvironmentalGyroSolé(tm) HarmonicbetandEnergy 2010 ABring andHow Do I WorkHow

  9. How Dynein Binds to Microtubules

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh School football Highdefault SignInstitute /Do Wind TurbinesHow

  10. How Dynein Binds to Microtubules

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh School football Highdefault SignInstitute /Do Wind TurbinesHowHow

  11. How Dynein Binds to Microtubules

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh School football Highdefault SignInstitute /Do Wind TurbinesHowHowHow

  12. How Dynein Binds to Microtubules

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh School football Highdefault SignInstitute /Do Wind

  13. Three phase AC motor controller

    DOE Patents [OSTI]

    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

    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.

  14. Case Histories of Energy Efficient Motors

    E-Print Network [OSTI]

    Riley, J. C.; Comiskey, W. T

    should be the value read from a reputable manufactur er I s data sheet. COOLING TOWER MOTORS The plant is now replacing 25 hp cooling tower motors with EE motors as the old ones burn out. An adapter base for changing from the old frame size 365... volts and amps from an EE motor and comparing this to readings from an old motor in service on the tower. This was based on an assumption of identical loads and motor power factors. This calculation showed yearly savings very close to the cost...

  15. Eminent Domain Rights (Florida)

    Broader source: Energy.gov [DOE]

    Developers of certain facilities, including dams to be used for hydropower, natural gas companies, wastewater systems, and coal pipelines, may be eligible to exercise eminent domain powers in...

  16. Eminent Domain (Indiana)

    Broader source: Energy.gov [DOE]

    Utilities, corporations, and gas storage facilities may invoke the law of eminent domain in certain circumstances, as provided for in this legislation.

  17. Homopolar motor with dual rotors

    DOE Patents [OSTI]

    Hsu, J.S.

    1998-12-01T23:59:59.000Z

    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.

  18. Thermoelectric generator for motor vehicle

    DOE Patents [OSTI]

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

    1997-04-29T23:59:59.000Z

    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.

  19. Motor Energy Saving Opportunities in an Industrial Plant

    E-Print Network [OSTI]

    Kumar, B.; Elwell, A.

    Industrial plants have enormous energy saving opportunities with electric motors. Improving motor efficiency is a conventional wisdom to save energy. Re-engineering affords far greater savings opportunities than motor efficiency improvement. Motor...

  20. 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

  1. Impact of Motor Failures on Payback Periods

    E-Print Network [OSTI]

    Cheek, K. F.; Pillay, P.; Dudley, K. J.

    This paper uses MotorMaster and Vaughen's Complete Price Guide to determine payback periods for different motor failure scenarios. Some scenarios considered are rewinds, reconditions, and replacement of bearings. Prices for these repairs...

  2. Writing Motor Specifications - How to Include Efficiency

    E-Print Network [OSTI]

    Quartermaine, B. J.

    1980-01-01T23:59:59.000Z

    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...

  3. Self-bearing motor design & control

    E-Print Network [OSTI]

    Imani Nejad, Mohammad

    2013-01-01T23:59:59.000Z

    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 ...

  4. A Novel Approach to Determining Motor Load

    E-Print Network [OSTI]

    Brown, M.

    A NOVEL APPROACH TO DETERMINING MOTOR LOAD by Michael Brown Georgia Tech Research Institute Atlanta, Georgia ABSTRACf Properly sized electric motors are essential if industrial plant efficiency is to be optimized and energy costs... minimized. Because of the difficully 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...

  5. Motorized control for mirror mount apparatus

    DOE Patents [OSTI]

    Cutburth, Ronald W. (Tracy, CA)

    1989-01-01T23:59:59.000Z

    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.

  6. Frequency modulation drive for a piezoelectric motor

    DOE Patents [OSTI]

    Mittas, Anthony (Albuquerque, NM)

    2001-01-01T23:59:59.000Z

    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.

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

    E-Print Network [OSTI]

    Miller, R. B.

    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...

  8. 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

  9. Preferred track: Speech Motor Control Title: Specificity of speech sensori-motor learning

    E-Print Network [OSTI]

    Paris-Sud XI, Universitť de

    COVER PAGE Preferred track: Speech Motor Control Title: Specificity of speech sensori-motor University, France. Ph.D. thesis focused on the link between language universals and the motor constraints of speech production. Current research focuses on speech sensori-motor learning and its consequences

  10. INDUCTION MOTOR FAULT DIAGNOSTIC AND MONITORING METHODS

    E-Print Network [OSTI]

    Povinelli, Richard J.

    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

  11. ABOUT SPEECH MOTOR CONTROL COMPLEXITY Pascal Perrier

    E-Print Network [OSTI]

    Paris-Sud XI, Universitť de

    20/07/2005 ABOUT SPEECH MOTOR CONTROL COMPLEXITY Pascal Perrier Institut de la Communication Parlťe ABSTRACT A key issue in research about speech motor control is the one of the level of complexity of the speech motor system, including the complex tongue-jaw biomechanics? Or would more simple internal

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

    DOE Patents [OSTI]

    Casada, Donald A. (Oak Ridge, TN)

    1996-01-01T23:59:59.000Z

    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.

  13. Chemistry in Motion: Tiny Synthetic Motors

    E-Print Network [OSTI]

    Peter H. Colberg; Shang Yik Reigh; Bryan Robertson; Raymond Kapral

    2014-11-03T23:59:59.000Z

    In this Account, we describe how synthetic motors that operate by self-diffusiophoresis make use of a self-generated concentration gradient to drive motor motion. A description of propulsion by self-diffusiophoresis is presented for Janus particle motors comprising catalytic and noncatalytic faces. The properties of the dynamics of chemically powered motors are illustrated by presenting the results of particle-based simulations of sphere-dimer motors constructed from linked catalytic and noncatalytic spheres. The geometries of both Janus and sphere-dimer motors with asymmetric catalytic activity support the formation of concentration gradients around the motors. Because directed motion can occur only when the system is not in equilibrium, the nature of the environment and the role it plays in motor dynamics are described. Rotational Brownian motion also acts to limit directed motion, and it has especially strong effects for very small motors. We address the following question: how small can motors be and still exhibit effects due to propulsion, even if only to enhance diffusion? Synthetic motors have the potential to transform the manner in which chemical dynamical processes are carried out for a wide range of applications.

  14. Traffic by small teams of molecular motors

    E-Print Network [OSTI]

    Melanie J. I. MŁller; Janina Beeg; Rumiana Dimova; Stefan Klumpp; Reinhard Lipowsky

    2008-07-07T23:59:59.000Z

    Molecular motors transport various cargos along cytoskeletal filaments, analogous to trucks on roads. In contrast to vehicles, however, molecular motors do not work alone but in small teams. We describe a simple model for the transport of a cargo by one team of motors and by two teams of motors, which walk into opposite directions. The cooperation of one team of motors generates long-range transport, which we observed experimentally in vitro. Transport by two teams of motors leads to a variety of bidirectional motility behaviour and to dynamic instabilities reminiscent of spontaneous symmetry breaking. We also discuss how cargo transport by teams of motors allows the cell to generate robust long-range bidirectional transport.

  15. System and method for motor speed estimation of an electric motor

    DOE Patents [OSTI]

    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

    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.

  16. Electrostatic generator/motor configurations

    DOE Patents [OSTI]

    Post, Richard F

    2014-02-04T23:59:59.000Z

    Electrostatic generators/motors designs are provided that generally may include a first cylindrical stator centered about a longitudinal axis; a second cylindrical stator centered about the axis, a first cylindrical rotor centered about the axis and located between the first cylindrical stator and the second cylindrical stator. The first cylindrical stator, the second cylindrical stator and the first cylindrical rotor may be concentrically aligned. A magnetic field having field lines about parallel with the longitudinal axis is provided.

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

    DOE Patents [OSTI]

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

    1997-01-01T23:59:59.000Z

    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.

  18. System and method for determining stator winding resistance in an AC motor using motor drives

    DOE Patents [OSTI]

    Lu, Bin; Habetler, Thomas G; Zhang, Pinjia

    2013-02-26T23:59:59.000Z

    A system and method for determining the stator winding resistance of AC motors is provided. The system includes an AC motor drive having an input connectable to an AC source and an output connectable to an input terminal of an AC motor, a pulse width modulation (PWM) converter having switches therein to control current flow and terminal voltages in the AC motor, and a control system connected to the PWM converter. The control system generates a command signal to cause the PWM converter to control an output of the AC motor drive corresponding to an input to the AC motor, selectively generates a modified command signal to cause the PWM converter to inject a DC signal into the output of the AC motor drive, and determines a stator winding resistance of the AC motor based on the DC signal of at least one of the voltage and current.

  19. Rotary steerable motor system for underground drilling

    DOE Patents [OSTI]

    Turner, William E. (Durham, CT); Perry, Carl A. (Middletown, CT); Wassell, Mark E. (Kingwood, TX); Barbely, Jason R. (Middletown, CT); Burgess, Daniel E. (Middletown, CT); Cobern, Martin E. (Cheshire, CT)

    2010-07-27T23:59:59.000Z

    A preferred embodiment of a system for rotating and guiding a drill bit in an underground bore includes a drilling motor and a drive shaft coupled to drilling motor so that drill bit can be rotated by the drilling motor. The system further includes a guidance module having an actuating arm movable between an extended position wherein the actuating arm can contact a surface of the bore and thereby exert a force on the housing of the guidance module, and a retracted position.

  20. Rotary steerable motor system for underground drilling

    DOE Patents [OSTI]

    Turner, William E. (Durham, CT); Perry, Carl A. (Middletown, CT); Wassell, Mark E. (Kingwood, TX); Barbely, Jason R. (Middletown, CT); Burgess, Daniel E. (Middletown, CT); Cobern, Martin E. (Cheshire, CT)

    2008-06-24T23:59:59.000Z

    A preferred embodiment of a system for rotating and guiding a drill bit in an underground bore includes a drilling motor and a drive shaft coupled to drilling motor so that drill bit can be rotated by the drilling motor. The system further includes a guidance module having an actuating arm movable between an extended position wherein the actuating arm can contact a surface of the bore and thereby exert a force on the housing of the guidance module, and a retracted position.

  1. Axion domain wall baryogenesis

    E-Print Network [OSTI]

    Daido, Ryuji; Takahashi, Fuminobu

    2015-01-01T23:59:59.000Z

    We propose a new scenario of baryogenesis, in which annihilation of axion domain walls generates a sizable baryon asymmetry. Successful baryogenesis is possible for a wide range of the axion mass and decay constant, $m \\simeq 10^8 -10^{13}$ GeV and $f \\simeq 10^{13} - 10^{16}$ GeV. Baryonic isocurvature perturbations are significantly suppressed in our model, in contrast to various spontaneous baryogenesis scenarios in the slow-roll regime. In particular, the axion domain wall baryogenesis is consistent with high-scale inflation which generates a large tensor-to-scalar ratio within the reach of future CMB B-mode experiments. We also discuss the gravitational waves produced by the domain wall annihilation and its implications for the future gravitational wave experiments.

  2. Electric Motor Remanufacturing and Energy Savings Sahil Sahni1

    E-Print Network [OSTI]

    Gutowski, Timothy

    Electric Motor Remanufacturing and Energy Savings Sahil Sahni1 , Avid Boustani1 , Timothy Gutowski to this study. #12;Contents 1 Introduction to Electric Motors 1 1.1 Motor Classifications . . . . . . . . . . . . . . . . . . . . . . . 1 1.2 Performance of Motors . . . . . . . . . . . . . . . . . . . . . . 4 1.3 Impact of motor

  3. -UNIT NAME C-728 Motor Cleaning Facility

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    UNIT NUMBER 33 -UNIT NAME C-728 Motor Cleaning Facility -REGULATORY STATUS--3:.:::.0:..04(--u) -LOCATION North of C-720 (Map...

  4. Permanent Magnet Development for Automotive Traction Motors

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Permanent Magnet Development for Automotive Traction Motors Includes: Beyond Rare Earth Magnets (BREM) Iver E. Anderson Ames Laboratory (USDOE) Email: andersoni@ameslab.gov Phone:...

  5. Electrical system for a motor vehicle

    DOE Patents [OSTI]

    Tamor, Michael Alan (Toledo, OH)

    1999-01-01T23:59:59.000Z

    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.

  6. Electrical system for a motor vehicle

    DOE Patents [OSTI]

    Tamor, M.A.

    1999-07-20T23:59:59.000Z

    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.

  7. 3.1. MOTOR SYSTEM 35 3.1 Motor System

    E-Print Network [OSTI]

    Toronto, University of

    3.1. MOTOR SYSTEM 35 3.1 Motor System The motor system comprises the dynamic model of the fish fish's brain. Since our goal is to animate an animal realistically and at reasonable computational cost controllers by gleaning information from the fish biomechanics literature (Blake, 1983; Alexander, 1992

  8. Electric Motors and Critical Materials

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the YouTube|6721 Federal Register / Vol.6:Energy Eighth AnnualELECTRIC MOTORS AND

  9. Brandl Motor | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:EzfeedflagBiomass ConversionsSouthbyBoston Heights,BoyneTennessee:Brandl Motor Jump to:

  10. Mission Motors | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal Pwer Plant JumpMarysville, Ohio:Menomonee|MililaniMindanaoMinuanoIV JumpMotors Jump to:

  11. Motor Systems | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative JC3 RSS September 9, 2013 V-237: TYPO3LoveMicrosoft2MitigationMotor Energy

  12. Myers Motors | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal Pwer PlantMunhall, Pennsylvania: Energy Resources Jump to:MuskingumMyers Motors Jump to:

  13. BSA Motors | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof EnergyInnovation in Carbon CaptureAtria PowerAxeonBCHP ScreeningBLMBSA Motors Jump

  14. Motor Pool Guidelines for Geosciences A completed Motor Pool Request form must be submitted to Denise for

    E-Print Network [OSTI]

    Holliday, Vance T.

    Motor Pool Guidelines for Geosciences ∑ A completed Motor Pool Request form must be submitted on the Geosciences website under the forms link. http://www.geo.arizona.edu/pdf/motor_pool_request.pdf ∑ If the trip be submitted with the Motor Pool Request. ∑ A list of passengers and drivers is for all motor pool travel (this

  15. Abstract--There are two types of drivers in production machine systems: constant velocity (CV) motor and servo-motor.

    E-Print Network [OSTI]

    Zhang, WJ "Chris"

    ) motor and servo-motor. If a system contains two drivers or more, among which some are of the CV motor while the other are the servo-motor, the system has the so-called hybrid driver architecture is stable. A simulation is performed to show verify the proposed controller. The CV motor has the velocity

  16. Motors

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHighandSWPA / SPRA /Ml'.SolarUS Dept of Energy, Office26,282.1

  17. Development of Ulta-Efficient Electric Motors

    SciTech Connect (OSTI)

    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

    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

  18. Cellulose binding domain proteins

    DOE Patents [OSTI]

    Shoseyov, Oded (Karmey Yosef, IL); Shpiegl, Itai (Rehovot, IL); Goldstein, Marc (Davis, CA); Doi, Roy (Davis, CA)

    1998-01-01T23:59:59.000Z

    A cellulose binding domain (CBD) having a high affinity for crystalline cellulose and chitin is disclosed, along with methods for the molecular cloning and recombinant production thereof. Fusion products comprising the CBD and a second protein are likewise described. A wide range of applications are contemplated for both the CBD and the fusion products, including drug delivery, affinity separations, and diagnostic techniques.

  19. Cellulose binding domain proteins

    DOE Patents [OSTI]

    Shoseyov, O.; Shpiegl, I.; Goldstein, M.; Doi, R.

    1998-11-17T23:59:59.000Z

    A cellulose binding domain (CBD) having a high affinity for crystalline cellulose and chitin is disclosed, along with methods for the molecular cloning and recombinant production. Fusion products comprising the CBD and a second protein are likewise described. A wide range of applications are contemplated for both the CBD and the fusion products, including drug delivery, affinity separations, and diagnostic techniques. 16 figs.

  20. Permanent magnet assisted synchronous reluctance motor, design and performance improvement

    E-Print Network [OSTI]

    Niazi, Peyman

    2006-04-12T23:59:59.000Z

    Recently, permanent magnet assisted (PMa)-synchronous reluctance motors (SynRM) have been considered as a possible alternative motor drive for high performance applications. In order to have an efficient motor drive, performing of three steps...

  1. Permanent magnet assisted synchronous reluctance motor, design and performance improvement†

    E-Print Network [OSTI]

    Niazi, Peyman

    2006-04-12T23:59:59.000Z

    Recently, permanent magnet assisted (PMa)-synchronous reluctance motors (SynRM) have been considered as a possible alternative motor drive for high performance applications. In order to have an efficient motor drive, ...

  2. What does motor efference copy represent? evidence from speech production

    E-Print Network [OSTI]

    Niziolek, CA; Nagarajan, SS; Houde, JF

    2013-01-01T23:59:59.000Z

    What does motor efference copy represent? Evidence fromAbbreviated title: What does motor efference copy represent?SJ, Wang X (2003) Sensory-Motor Interaction in the Primate

  3. Motor Neurons Controlling Fluid Ingestion in Drosophila melanogaster

    E-Print Network [OSTI]

    Manzo, Andrea

    2011-01-01T23:59:59.000Z

    coordination of rhythmic motor patterns. J Neurophysiol 90:Figure 3.5. Individual motor neurons project to eitherGraphs as in (C-D) for MN12 motor neurons. n=10-13 flies per

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

    E-Print Network [OSTI]

    Sebastian Bouzat; Fernando Falo

    2010-12-14T23:59:59.000Z

    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.

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

    SciTech Connect (OSTI)

    None

    2012-01-01T23:59:59.000Z

    REACT Project: Baldor will develop a new type of traction motor with the potential to efficiently power future generations of EVs. Unlike todayís large, bulky EV motors which use expensive, imported rare-earth-based magnets, Baldorís 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.

  6. Total Economics of Energy Efficient Motors

    E-Print Network [OSTI]

    Nester, A. T.

    1984-01-01T23:59:59.000Z

    Due to the large increases in cost of electrical energy in recent years, the energy savings attainable with the use of energy-efficient motors is very attractive to all motor users. But energy and electric demand charge savings tell only part...

  7. Commercial Motor Vehicle Brake Assessment Tools

    E-Print Network [OSTI]

    Commercial Motor Vehicle Brake Assessment Tools Commercial Motor Vehicle Roadside Technology to deceleration in g's ­ Passing score: BE43.5 · Enforcement tool for only 3 years. · Based solely on brake Brake Research · CMVRTC research built on these enforcement tools ­ Correlation Study ­ Level-1 / PBBT

  8. Oscillation control system for electric motor drive

    DOE Patents [OSTI]

    Slicker, J.M.; Sereshteh, A.

    1988-08-30T23:59:59.000Z

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

  9. Oscillation control system for electric motor drive

    DOE Patents [OSTI]

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

    1988-01-01T23:59:59.000Z

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

  10. Writing Motor Specifications - How to Include Efficiency†

    E-Print Network [OSTI]

    Quartermaine, B. J.

    1980-01-01T23:59:59.000Z

    be as low as 50% load. EFFICIENCY EVALUATION Unless advised otherwise, a motor manufacturer will not know that effiency is to be evaluated and as a result is likely to offer the least cost motor when tendering for a specific application. Hence...

  11. Performance improvement of permanent magnet ac motors

    E-Print Network [OSTI]

    Parsa, Leila

    2005-08-29T23:59:59.000Z

    .????????????????....????.. 19 B. Background............??..?????.??.?????...?.?.... 20 C. Comparing BLDC Motor and PMSM???????????... 24 D. Harmonic Spectrum of MMF in Machines with Non-sinusoidal Winding Distribution??????????????????.. 26 ix TABLE............................................................................ 58 H. Conclusion??????????????????????. 68 III FAULT TOLERANT OPERATION OF PERMANENT MAGNET MOTOR DRIVES?????????????????????? 69 A. Introduction.????????????????....???.?. 69 B. Fault Tolerant Operation of Five-Phase PMSM...

  12. Improve Motor System Efficiency with MotorMaster+, Software Tools for Industry, Industrial Technologies Program (ITP) (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2008-12-01T23:59:59.000Z

    This fact sheet describes how the Industrial Technologies Program MotorMaster+ software tool aids industrial plants with finding energy-efficient motor replacement options and managing motor systems.

  13. High-speed electrical motor evaluation

    SciTech Connect (OSTI)

    Not Available

    1989-02-03T23:59:59.000Z

    Under this task, MTI conducted a general review of state-of-the-art high-speed motors. The purpose of this review was to assess the operating parameters, limitations and performance of existing motor designs, and to establish commercial sources for a motor compatible with the requirements of the Brayton-cycle system. After the motor requirements were established, a list of motor types, manufacturers and designs capable of achieving the requisite performance was compiled. This list was based on an in-house evaluation of designs. Following the establishment of these options, a technical evaluation of the designs selected was conducted. In parallel with their evaluations, MTI focused on the establishment of commercial sources.

  14. Best Practices in Non-Motorized Transport Planning, Implementation...

    Open Energy Info (EERE)

    Best Practices in Non-Motorized Transport Planning, Implementation and Maintenance Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Best Practices in Non-Motorized...

  15. DOE Issues Notice of Proposed Rulemaking for Electric Motors...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Notice of Proposed Rulemaking for Electric Motors Energy Conservation Standards DOE Issues Notice of Proposed Rulemaking for Electric Motors Energy Conservation Standards November...

  16. ameliorate motor performance: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    in the presently available methods... Ahmed, Shehab 2000-01-01 2 Stereotype lift in motor performance 1 Running head: STEREOTYPE LIFT IN MOTOR PERFORMANCE Physics...

  17. New rocket propellant and motor design offer high-performance...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    New rocket propellant and motor design offer high-performance and safety New rocket propellant and motor design offer high-performance and safety Scientists recently flight tested...

  18. Premium Efficiency Motor Selection and Application Guide - A...

    Broader source: Energy.gov (indexed) [DOE]

    handbook informs new motor purchase decisions by identifying energy and cost savings that can come from replacing motors with premium efficiency units. The handbook provides an...

  19. United States Industrial Motor-Driven Systems Market Assessment...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Motor-Driven Systems Market Assessment: Charting a Roadmap to Energy Savings for Industry United States Industrial Motor-Driven Systems Market Assessment: Charting a Roadmap to...

  20. General Motors Clean Combustion Engines Advanced with Predictive...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Motors Clean Combustion Engines Advanced with Predictive Simulation Tools Sandia National Laboratories (SNL) has been working with General Motors (GM) for over 30 years. In the...

  1. Sandia National Laboratories: Sandia and General Motors: Advancing...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ClimateECAbout ECFacilitiesCRFSandia and General Motors: Advancing Clean Combustion Engines with Predictive Simulation Tools Sandia and General Motors: Advancing Clean Combustion...

  2. Improving Motor and Drive System Performance: A Sourcebook for Industry

    SciTech Connect (OSTI)

    Not Available

    2008-09-01T23:59:59.000Z

    This is one in a series of sourcebooks to assist industrial personnel in understanding and optimizing motors and motor-driven systems

  3. axial motor circuits: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Fundamentals of electromechanical energy conversion. Motors and generators, transformers, single and three- phase power circuits, three-phase induction motor including...

  4. Improving Motor and Drive System Performance - A Sourcebook for...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    motors and drives, as well as resources for additional information, tools, software, videos, and training opportunities. Improving Motor and Drive System Performance - A...

  5. United States Industrial Motor Systems Market Opportunities Assessment...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Motor Systems Market Opportunities Assessment: Executive Summary United States Industrial Motor Systems Market Opportunities Assessment: Executive Summary In addition to serving...

  6. Continuous Energy Improvement in Motor Driven Systems - A Guidebook...

    Energy Savers [EERE]

    Continuous Energy Improvement in Motor Driven Systems - A Guidebook for Industry Continuous Energy Improvement in Motor Driven Systems - A Guidebook for Industry This guidebook...

  7. Motor monitoring method and apparatus using high frequency current components

    DOE Patents [OSTI]

    Casada, Donald A. (Knoxville, TN)

    1996-01-01T23:59:59.000Z

    A motor current analysis method and apparatus for monitoring electrical-motor-driven devices. The method and apparatus utilize high frequency portions of the motor current spectra to evaluate the condition of the electric motor and the device driven by the electric motor. The motor current signal produced as a result of an electric motor is monitored and the low frequency components of the signal are removed by a high-pass filter. The signal is then analyzed to determine the condition of the electrical motor and the driven device.

  8. Electrostatic generator/motor configurations

    DOE Patents [OSTI]

    Post, Richard Freeman

    2012-09-11T23:59:59.000Z

    Electrostatic generators/motors designs are provided that include a stator fixedly connected to a first central support centered about a central axis. The stator elements are attached to the first central support. Similarly, a second stator is connected to a central support centered about the central axis, and the second stator has stator elements attached to the second central support. A rotor is located between the first stator and the second stator and includes an outer support, where the rotor is rotatably centered about the central axis, the rotor having elements in contact with the outer support, each rotor element having an extending rotor portion that extends radially from the outer support toward the axis of rotation.

  9. A comparison of two energy efficient motors

    SciTech Connect (OSTI)

    Kueck, J.D.; Casada, D.A.; Otaduy, P.J. [Oak Ridge National Lab., TN (United States)

    1998-06-01T23:59:59.000Z

    Limited testing provides evidence that a particular energy efficient motor (EEM) appears to have a unique susceptibility to reduced negative sequence impedance. The effect of the reduction in negative sequence impedance is to allow a higher negative sequence current flow under conditions of voltage unbalance or negative sequence harmonic distortion in the bus voltage. This higher current flow results in additional heating of the rotor and 120 Hz vibration, and may combine with other conditions to cause premature failure. In addition, energy efficient motors operate at slightly higher speeds, and may sometimes cause the driven loads to require more horsepower from the motor causing further overheating. Existing industry guidance for the application of three phase motors in poor power quality environments may be inadequate because this guidance does not consider the combined effect of such conditions as voltage unbalance, harmonic distortion and over voltage. A specific application of an EEM is studied in this paper; the motor may be failing due to a combination of over voltage, voltage unbalance, harmonic distortion and loading the motor to full rated load, while the motor has a Service Factor of 1.0.

  10. The efficiency of the molecular motors

    E-Print Network [OSTI]

    Yunxin Zhang

    2009-02-12T23:59:59.000Z

    Molecular motors convert chemical energy into mechanical work while operating in an environment dominated by Brownian motion. The aim of this paper is to explore the flow of energy between the molecular motors and its surroundings, in particular, its efficiency. Based on the Fokker-Planck equation with either $N$ or infinite chemical states, we find that the energy efficiency of the molecular motors, whether the Stokes efficiency or the usual thermodynamic efficiency, is strictly bounded by 1, because of the dissipation of the energy in both the overdamped surroundings and in the process of the chemical reaction.

  11. Extended core for motor/generator

    DOE Patents [OSTI]

    Shoykhet, Boris A.

    2005-05-10T23:59:59.000Z

    An extended stator core in a motor/generator can be utilized to mitigate losses in end regions of the core and a frame of the motor/generator. To mitigate the losses, the stator core can be extended to a length substantially equivalent to or greater than a length of a magnetically active portion in the rotor. Alternatively, a conventional length stator core can be utilized with a shortened magnetically active portion to mitigate losses in the motor/generator. To mitigate the losses in the core caused by stator winding, the core can be extended to a length substantially equivalent or greater than a length of stator winding.

  12. Extended core for motor/generator

    DOE Patents [OSTI]

    Shoykhet, Boris A.

    2006-08-22T23:59:59.000Z

    An extended stator core in a motor/generator can be utilized to mitigate losses in end regions of the core and a frame of the motor/generator. To mitigate the losses, the stator core can be extended to a length substantially equivalent to or greater than a length of a magnetically active portion in the rotor. Alternatively, a conventional length stator core can be utilized with a shortened magnetically active portion to mitigate losses in the motor/generator. To mitigate the losses in the core caused by stator winding, the core can be extended to a length substantially equivalent or greater than a length of stator winding.

  13. Optimization of induction motor efficiency. Volume 3. Experimental comparison of three-phase standard motors with Wanlass motors. Final report

    SciTech Connect (OSTI)

    Fuchs, E.F.

    1985-12-01T23:59:59.000Z

    Researchers conducted comprehensive laboratory tests to evaluate the effectiveness of the Wanlass connection in improving motor efficiency. On the basis of these tests, they found no reason to conclude that such a connection is more efficient than the standard connection.

  14. Synchronous motor with soft start element formed between the motor rotor and motor output shaft to successfully synchronize loads that have high inertia and/or high torque

    DOE Patents [OSTI]

    Umans, Stephen D; Nisley, Donald L; Melfi, Michael J

    2014-10-28T23:59:59.000Z

    A line-start synchronous motor has a housing, a rotor shaft, and an output shaft. A soft-start coupling portion is operatively coupled to the output shaft and the rotor shaft. The soft-start coupling portion is configurable to enable the synchronous motor to obtain synchronous operation and to drive, at least near synchronous speed during normal steady state operation of the motor, a load having characteristics sufficient to prevent obtaining normal synchronous operation of the motor when the motor is operatively connected to the load in the absence of the soft-start coupling. The synchronous motor is sufficiently rated to obtain synchronous operation and to drive, at least near synchronous speed during normal steady state operation of the motor, a load having characteristics sufficient to prevent obtaining normal synchronous operation of the motor when the motor is operatively connected to the load in the absence of the soft-start coupling.

  15. Convective Cooling and Passive Stack Improvements in Motors (Presentation)

    SciTech Connect (OSTI)

    Bennion, K.

    2014-06-01T23:59:59.000Z

    This presentation discusses current research at NREL in convective cooling and passive stack improvements in motors.

  16. Motor transport of self-assembled cargos in crowded environments

    E-Print Network [OSTI]

    Ross, Jennifer

    Motor transport of self-assembled cargos in crowded environments Leslie Conwaya , Derek Woodb is performed by multiple motors working in concert. However, the mechanism of motor association to cargos is unknown. It is also unknown how long individual motors stay attached, how many are active, and how

  17. Inferring Motor Programs from Images of Handwritten Digits

    E-Print Network [OSTI]

    Hinton, Geoffrey E.

    Inferring Motor Programs from Images of Handwritten Digits Geoffrey Hinton and Vinod Nair whose stiffnesses are controlled by a motor program. We show how neural networks can be trained to infer the motor programs required to accurately reconstruct the MNIST digits. The inferred motor programs can

  18. CASE REPORT Open Access Prognostic value of cortically induced motor

    E-Print Network [OSTI]

    Paris-Sud XI, Universitť de

    CASE REPORT Open Access Prognostic value of cortically induced motor evoked activity by TMS) showing total absence of motor activity evoked by transcranial magnetic stimulation (TMS) of spared regions of the left motor cortex, but near-to-complete recovery of motor abilities in the affected hand

  19. Scaling Reinforcement Learning Paradigms for Motor Control†

    E-Print Network [OSTI]

    Vijayakumar, Sethu; Peters, Jan; Schaal, Stefan

    Reinforcement learning offers a general framework to explain reward related learning in artificial and biological motor control. However, current reinforcement learning methods rarely scale to high dimensional movement systems ...

  20. Method and apparatus for large motor control

    DOE Patents [OSTI]

    Rose, Chris R. (Santa Fe, NM); Nelson, Ronald O. (White Rock, NM)

    2003-08-12T23:59:59.000Z

    Apparatus and method for providing digital signal processing method for controlling the speed and phase of a motor involves inputting a reference signal having a frequency and relative phase indicative of a time based signal; modifying the reference signal to introduce a slew-rate limited portion of each cycle of the reference signal; inputting a feedback signal having a frequency and relative phase indicative of the operation of said motor; modifying the feedback signal to introduce a slew-rate limited portion of each cycle of the feedback signal; analyzing the modified reference signal and the modified feedback signal to determine the frequency of the modified reference signal and of the modified feedback signal and said relative phase between said modified reference signal and said modified feedback signal; and outputting control signals to the motor for adjusting said speed and phase of the motor based on the frequency determination and determination of the relative phase.

  1. Total Energy Management in General Motors

    E-Print Network [OSTI]

    DeKoker, N.

    1979-01-01T23:59:59.000Z

    This paper presents an overview of General Motors' energy management program with special emphasis on energy conservation. Included is a description of the total program organization, plant guidelines, communication and motivation techniques...

  2. High speed linear induction motor efficiency optimization

    E-Print Network [OSTI]

    Johnson, Andrew P. (Andrew Peter)

    2005-01-01T23:59:59.000Z

    One of the reasons linear motors, a technology nearly a century old, have not been adopted for a large number of linear motion applications is that they have historically had poor efficiencies. This has restricted the ...

  3. Fluid Gravity Engineering Rocket motor flow analysis

    E-Print Network [OSTI]

    Anand, Mahesh

    Fluid Gravity Engineering Capability · Rocket motor flow analysis -Internal (performance) -External (plume / contamination) · Effect on landing site (surface alteration) -In-depth flow through porous young scientists/engineers Fluid Gravity Engineering Ltd #12;

  4. Torquespeed relationship of the bacterial flagellar motor

    E-Print Network [OSTI]

    Oster, George

    the cyto- plasmic 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

  5. Energy-efficient electric motors study

    SciTech Connect (OSTI)

    Not Available

    1981-03-23T23:59:59.000Z

    The study identifies the industrial decision makers, investigated the information they needed to know, how they can best be reached, and the motivating factors for purchasing energy-efficient electric motors. A survey was conducted of purchasers of integral horsepower polyphase motors. The survey measured current knowledge of and awareness of energy-efficient motors, decision-making criteria, information sources, purchase and usage patterns, and related factors. The survey data were used for the electric motor market penetration analysis. Additionally, a telephone survey was made. The study also provides analyses of distribution channels, commercialization constraints, and the impacts of government programs and rising energy prices. A description of study findings, conclusions, and recommendations is presented. Sample questionnaires and copies of letters to respondents are presented in 3 appendices. Appendices D and E contain descriptions of the methods used. (MCW)

  6. SENSORLESS INDUCTION MOTOR CONTROL USING STATISTICAL

    E-Print Network [OSTI]

    is replaced by npM so that the dynamic model of the induction motor is then uSa = RSiSa + LS d dtiSa + M d dti

  7. Understanding premium-efficiency motor economics

    SciTech Connect (OSTI)

    Hirzel, J. (GE Motors, Fort Wayne, IN (US))

    1992-04-30T23:59:59.000Z

    This paper reports that from a numerical standpoint, motors in continuous-duty service comprise only a fraction of those used in America's industrial plants. Not all plant engineers, however, are aware that the relatively few motors in continuous-duty service account for about 75% of all industrial electrical use. For motors in continuous-duty service, a few percentage points gain in efficiency can yield tremendous reductions in the plant electric bill energy charge. Acknowledgment of this fact has spawned the common practice of replacing less-efficient motors with types of more energy-efficient design. However, arbitrary application of this retrofit practice can be a costly mistake. To maximize return on investment, some basic factors must be understood and considered.

  8. Loose mechanochemical coupling of molecular motors

    E-Print Network [OSTI]

    Yunxin Zhang

    2011-05-05T23:59:59.000Z

    In living cells, molecular motors convert chemical energy into mechanical work. Its thermodynamic energy efficiency, i.e. the ratio of output mechanical work to input chemical energy, is usually high. However, using two-state models, we found the motion of molecular motors is loosely coupled to the chemical cycle. Only part of the input energy can be converted into mechanical work. Others is dissipated into environment during substeps without contributions to the macro scale unidirectional movement.

  9. Efficiency test on the Buchanan pump motor

    E-Print Network [OSTI]

    Krezdorn, Roy Rankin

    1954-01-01T23:59:59.000Z

    representing the Lower Colorado River Authority, Fargo Engineering Company~ and the Westinghouse Electric Corporation began conducting the necessary tests to determine the efficiency of the machine, The first test conducted obtained data for a no... excitation the motor breaker was tripped and the motor allowed to decelerate, The Buchanan powerhouse synchroscope was used to determine the time at which the mctor was turning at rated speed. On a signal from the operator at that instant simultaneous...

  10. Energy Savings of Variable Speed Motors

    E-Print Network [OSTI]

    Fishel, F. D.

    1979-01-01T23:59:59.000Z

    pump) The input horsepower from the electrical system can be calculated using Equation (3). static head + frictional head + control valve Input HP = ::"\\;;=~..l... motor, conduit, and wire. Motors in the 25-350 HP range are best suited to VFD Systems. As the cost of energy increases and the relative cost savings of variable speed systems increase, the application of these systems should be more widespread. 281...

  11. Trapped field internal dipole superconducting motor generator

    DOE Patents [OSTI]

    Hull, John R. (Downers Grove, IL)

    2001-01-01T23:59:59.000Z

    A motor generator including a high temperature superconductor rotor and an internally disposed coil assembly. The motor generator superconductor rotor is constructed of a plurality of superconductor elements magnetized to produce a dipole field. The coil assembly can be either a conventional conductor or a high temperature superconductor. The superconductor rotor elements include a magnetization direction and c-axis for the crystals of the elements and which is oriented along the magnetization direction.

  12. ac-driven atomic quantum motor

    E-Print Network [OSTI]

    A. V. Ponomarev; S. Denisov; P. Hanggi

    2009-06-09T23:59:59.000Z

    We invent an ac-driven quantum motor consisting of two different, interacting ultracold atoms placed into a ring-shaped optical lattice and submerged in a pulsating magnetic field. While the first atom carries a current, the second one serves as a quantum starter. For fixed zero-momentum initial conditions the asymptotic carrier velocity converges to a unique non-zero value. We also demonstrate that this quantum motor performs work against a constant load.

  13. Equivalent Circuit Modeling of Hysteresis Motors

    SciTech Connect (OSTI)

    Nitao, J J; Scharlemann, E T; Kirkendall, B A

    2009-08-31T23:59:59.000Z

    We performed a literature review and found that many equivalent circuit models of hysteresis motors in use today are incorrect. The model by Miyairi and Kataoka (1965) is the correct one. We extended the model by transforming it to quadrature coordinates, amenable to circuit or digital simulation. 'Hunting' is an oscillatory phenomenon often observed in hysteresis motors. While several works have attempted to model the phenomenon with some partial success, we present a new complete model that predicts hunting from first principles.

  14. Are motor proteins power strokers, Brownian motors or Brian Geislingera, Erin Darnellb, Kimberly Farrisc, and Ryoichi Kawaia

    E-Print Network [OSTI]

    Kawai, Ryoichi

    Are motor proteins power strokers, Brownian motors or both? Brian Geislingera, Erin Darnellb Baccalaureate, Birmingham, AL 35210 ABSTRACT About a decade ago Brownian motors were introduced as a possible mechanism for motor protein mobility. Since then many theoretical and experimental papers have been

  15. Molecular motors: design, mechanism and control

    E-Print Network [OSTI]

    Debashish Chowdhury

    2008-01-10T23:59:59.000Z

    Biological functions in each animal cell depend on coordinated operations of a wide variety of molecular motors. Some of the these motors transport cargo to their respective destinations whereas some others are mobile workshops which synthesize macromolecules while moving on their tracks. Some other motors are designed to function as packers and movers. All these motors require input energy for performing their mechanical works and operate under conditions far from thermodynamic equilibrium. The typical size of these motors and the forces they generate are of the order of nano-meters and pico-Newtons, respectively. They are subjected to random bombardments by the molecules of the surrounding aqueous medium and, therefore, follow noisy trajectories. Because of their small inertia, their movements in the viscous intracellular space exhibits features that are characteristics of hydrodynamics at low Reynold's number. In this article we discuss how theoretical modeling and computer simulations of these machines by physicists are providing insight into their mechanisms which engineers can exploit to design and control artificial nano-motors.

  16. Halbach array DC motor/generator

    DOE Patents [OSTI]

    Merritt, Bernard T. (Livermore, CA); Dreifuerst, Gary R. (Livermore, CA); Post, Richard F. (Walnut Creek, CA)

    1998-01-01T23:59:59.000Z

    A new configuration of DC motor/generator is based on a Halbach array of permanent magnets. This motor does not use ferrous materials so that the only losses are winding losses and losses due to bearings and windage. An "inside-out" design is used as compared to a conventional motor/generator design. The rotating portion, i.e., the rotor, is on the outside of the machine. The stationary portion, i.e., the stator, is formed by the inside of the machine. The rotor contains an array of permanent magnets that provide a uniform field. The windings of the motor are placed in or on the stator. The stator windings are then "switched" or "commutated" to provide a DC motor/generator much the same as in a conventional DC motor. The commutation can be performed by mechanical means using brushes or by electronic means using switching circuits. The invention is useful in electric vehicles and adjustable speed DC drives.

  17. Halbach array DC motor/generator

    DOE Patents [OSTI]

    Merritt, B.T.; Dreifuerst, G.R.; Post, R.F.

    1998-01-06T23:59:59.000Z

    A new configuration of DC motor/generator is based on a Halbach array of permanent magnets. This motor does not use ferrous materials so that the only losses are winding losses and losses due to bearings and windage. An ``inside-out`` design is used as compared to a conventional motor/generator design. The rotating portion, i.e., the rotor, is on the outside of the machine. The stationary portion, i.e., the stator, is formed by the inside of the machine. The rotor contains an array of permanent magnets that provide a uniform field. The windings of the motor are placed in or on the stator. The stator windings are then ``switched`` or ``commutated`` to provide a DC motor/generator much the same as in a conventional DC motor. The commutation can be performed by mechanical means using brushes or by electronic means using switching circuits. The invention is useful in electric vehicles and adjustable speed DC drives. 17 figs.

  18. Improving ac motor efficiency with fuzzy logic energy optimizer

    SciTech Connect (OSTI)

    Spiegel, R.J.; Chappell, P.J.; Cleland, J.G.

    1994-08-01T23:59:59.000Z

    The paper discusses EPA's research program to develop fuzzy-logic-based energy optimizers for alternating-current (AC) induction motors driven by Adjustable Speed Drives (ASDs). The technical goals of the program are to increase the efficiency of ASD/motor combinations (especially when operating at off-rated torque/speed conditions), develop a generic controller for energy optimization that can be applied to a wide range of motors and ASDs regardless of size and application, and develop a controller for energy optimization that can eliminate the requirement for tachometer or encoder feedback, and still maintain the stability and response of closed-loop control. Electric motors use over 60% of the electrical power generated in the U.S. The U.S. population of approximately 1 billion motors use over 1700 billion kWh per year. Over 140 million new motors are sold each year. A review of the U.S. motor population reveals that 90% of the motors are less than 1 hp (fractional motors) in size, but use less than 10% of the electricity consumed by motors. More that 80% of the electricity used by motors is consumed by less than 1% of the motor population (motors greater than 20 hp). Thus, it is clear that large energy savings from improvement in motor efficiency could be achieved from a relatively small motor population.

  19. Multifunctionalities driven by ferroic domains

    SciTech Connect (OSTI)

    Yang, J. C.; Huang, Y. L.; Chu, Y. H., E-mail: yhc@nctu.edu.tw [Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan (China); He, Q. [Department of Physics, Durham University, Durham DH1 3LE (United Kingdom)

    2014-08-14T23:59:59.000Z

    Considerable attention has been paid to ferroic systems in pursuit of advanced applications in past decades. Most recently, the emergence and development of multiferroics, which exhibit the coexistence of different ferroic natures, has offered a new route to create functionalities in the system. In this manuscript, we step from domain engineering to explore a roadmap for discovering intriguing phenomena and multifunctionalities driven by periodic domain patters. As-grown periodic domains, offering exotic order parameters, periodic local perturbations and the capability of tailoring local spin, charge, orbital and lattice degrees of freedom, are introduced as modeling templates for fundamental studies and novel applications. We discuss related significant findings on ferroic domain, nanoscopic domain walls, and conjunct heterostructures based on the well-organized domain patterns, and end with future prospects and challenges in the field.

  20. Domain walls in gapped graphene

    E-Print Network [OSTI]

    G. W. Semenoff; V. Semenoff; Fei Zhou

    2008-05-31T23:59:59.000Z

    The electronic properties of a particular class of domain walls in gapped graphene are investigated. We show that they can support mid-gap states which are localized in the vicinity of the domain wall and propagate along its length. With a finite density of domain walls, these states can alter the electronic properties of gapped graphene significantly. If the mid-gap band is partially filled,the domain wall can behave like a one-dimensional metal embedded in a semi-conductor, and could potentially be used as a single-channel quantum wire.

  1. Domain walls in gapped graphene

    E-Print Network [OSTI]

    Semenoff, G W; Zhou, Fei

    2015-01-01T23:59:59.000Z

    The electronic properties of a particular class of domain walls in gapped graphene are investigated. We show that they can support mid-gap states which are localized in the vicinity of the domain wall and propagate along its length. With a finite density of domain walls, these states can alter the electronic properties of gapped graphene significantly. If the mid-gap band is partially filled,the domain wall can behave like a one-dimensional metal embedded in a semi-conductor, and could potentially be used as a single-channel quantum wire.

  2. Motor Response Selection in Overt Sentence Production: A Functional MRI Study

    E-Print Network [OSTI]

    Tremblay, Pascale; Small, Steven L.

    2011-01-01T23:59:59.000Z

    The development of oral motor control and language. DownsRelative www.frontiersin.org Motor response selection instruc- tures participating in motor prepa- ration in humans:

  3. Descriptions of Motor Vehicle Collisions by Participants in Emergency DepartmentĖBased Studies: Are They Accurate?

    E-Print Network [OSTI]

    2012-01-01T23:59:59.000Z

    reports in determining motor vehicle crash characteristics.R ESEARCH Descriptions of Motor Vehicle Collisions byThe immediate aftermath of motor vehicle collisions. In:

  4. Impacts of motor vehicle operation on water quality - Clean-up Costs and Policies

    E-Print Network [OSTI]

    Nixon, Hilary; Saphores, Jean-Daniel M

    2007-01-01T23:59:59.000Z

    preventing water pollution from motor vehicles would be muchgroundwater pollution; motor-vehicle transportation;the environmental costs of motor vehicle transportation in

  5. Filament-Filament Switching Can Be Regulated by Separation Between Filaments Together with Cargo Motor Number

    E-Print Network [OSTI]

    Erickson, Robert P; Gross, Steven P; Yu, Clare C; Kabla, Alexandre J

    2013-01-01T23:59:59.000Z

    that a single engaged motor cannot switch between filaments.EL, Goldman YE (2010) Motor number controls cargo switchingtransport: molecular motors navigate a complex cytoskeleton.

  6. Force-velocity relations for multiple molecular motor transportation

    E-Print Network [OSTI]

    Wang, Ziqing

    2009-01-01T23:59:59.000Z

    A transition rate model of cargo transportation by N effective 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 experimental observations.

  7. Force-velocity relations for multiple-molecular-motor transport

    E-Print Network [OSTI]

    Ziqing Wang; Ming Li

    2009-10-01T23:59:59.000Z

    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

  8. Iterative Solution of Maxwell's Equations for an Induction Motor

    E-Print Network [OSTI]

    Shayak Bhattacharjee

    2014-07-29T23:59:59.000Z

    In this work we use classical electromagnetism to analyse a three-phase induction motor. We first cast the motor as a boundary value problem involving two phenomenological time-constants. These are derived from the widely used equivalent circuit model of the induction motor. We then use an iterative procedure to evaluate these constants and obtain the motor performance equations. Our results depend only on the geometrical parameters of the motor and can be used to derive precise expressions for the excitation frequency and applied voltage needed to extract maximum performance from a given motor at any rotation speed.

  9. The China Motor Systems Energy Conservation Program: A major national initiative to reduce motor system energy use in China

    SciTech Connect (OSTI)

    Nadel, Steven; Wang, Wanxing; Liu, Peter; McKane, Aimee T.

    2001-05-31T23:59:59.000Z

    Electric motor systems are widely used in China to power fans, pumps, blowers, air compressors, refrigeration compressors, conveyers, machinery, and many other types of equipment. Overall, electric motor systems consume more than 600 billion kWh annually, accounting for more than 50 percent of China's electricity use. There are large opportunities to improve the efficiency of motor systems. Electric motors in China are approximately 2-4 percent less efficient on average than motors in the U.S. and Canada. Fans and pumps in China are approximately 3-5 percent less efficient than in developed countries. Even more importantly, motors, fans, pumps, air compressors and other motor-driven equipment are frequently applied with little attention to system efficiency. More optimized design, including appropriate sizing and use of speed control strategies, can reduce energy use by 20 percent or more in many applications. Unfortunately, few Chinese enterprises use or even know about these energy-saving practices. Opportunities for motor system improvements are probably greater in China than in the U.S. In order to begin capturing these savings, China is establishing a China Motor Systems Energy Conservation Program. Elements of this program include work to develop minimum efficiency standards for motors, a voluntary ''green motor'' labeling program for high-efficiency motors, efforts to develop and promote motor system management guidelines, and a training, technical assistance and financing program to promote optimization of key motor systems.

  10. Severe environment turbine powered steerable motors

    SciTech Connect (OSTI)

    Gaynor, T.M. [Neyrfor-Weir Ltd., Aberdeen (United Kingdom). Dept. of Operations

    1995-12-31T23:59:59.000Z

    Turbine powered downhole motors have advantages for high temperature, high pressure, sour gas or hard formation drilling which stem from turbodrill construction rather than metallurgy, and from their power characteristics. The first part of the paper will discuss this, and compare turbine and Moineau powered motors in this context. The introduction in the last three years of new bearing materials, hydraulic thrust balancing devices and high performance flexible couplings have extended turbodrill performance and reliability margins in severe environment drilling. It is perfecting feasible to build steerable motors capable of drilling for 250 hours in 6-in. hole at 200 degrees Celsius (392 degrees Fahrenheit) in a deviated high pressure well since the individual problems in this ``Well from Hell`` have successfully been overcome. The second part of the paper will illustrate this through field examples.

  11. Advanced motor driven clamped borehole seismic receiver

    DOE Patents [OSTI]

    Engler, B.P.; Sleefe, G.E.; Striker, R.P.

    1993-02-23T23:59:59.000Z

    A borehole seismic tool is described including a borehole clamp which only moves perpendicular to the borehole. The clamp is driven by an electric motor, via a right angle drive. When used as a seismic receiver, the tool has a three part housing, two of which are hermetically sealed. Accelerometers or geophones are mounted in one hermetically sealed part, the electric motor in the other hermetically sealed part, and the clamp and right angle drive in the third part. Preferably the tool includes cable connectors at both ends. Optionally a shear plate can be added to the clamp to extend the range of the tool.

  12. Soft-commutated direct current motor

    DOE Patents [OSTI]

    Hsu, J.S.

    1999-07-27T23:59:59.000Z

    A method and circuit is disclosed for soft-commutation of a direct current (DC) motor. An attenuation circuit is connected through auxiliary brushes A, A[prime], B and B[prime] to the commutator (16) to drain circuit from successive armature coils (15) before the main brushes (27, 28) disconnects from each of the coils (15). This prevents the spark generation that normally occurs in conventional DC motors. The attenuation circuit may also be connected before energization of the coil (15) for a soft turning on operation. 13 figs.

  13. An Examination of Motor Skills in Children who Stutter

    E-Print Network [OSTI]

    2012-10-19T23:59:59.000Z

    Recently, research has postulated that stuttering is a motor disorder that results from brain abnormalities within the central nervous system. Based on evidence of numerous irregularities within various motor systems, it has been suggested...

  14. Secrets of the Motor That Drives Archaea Revealed

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

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

  15. Variable Frequency Drives: Energy Savings and Impact on Motor Performance

    E-Print Network [OSTI]

    Petro, D.

    , 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....

  16. 38 CHAPTER 1. ASSEMBLY MANUAL BiDirectional Motor

    E-Print Network [OSTI]

    38 CHAPTER 1. ASSEMBLY MANUAL Bi≠Directional Motor and Infrared Beacon Uni≠Directional Motor, LED, Incandescent Lamp Sensor, Polarized Sensor, Non≠polarized Figure 1.26: Standard Connector Plug Configurations

  17. New Energy Efficiency Standards for Electric Motors and Walk...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Motors and Walk-in Coolers and Freezers to Save on Energy Bills and Reduce Carbon Pollution New Energy Efficiency Standards for Electric Motors and Walk-in Coolers and Freezers...

  18. Low-cost motor drive embedded fault diagnosis systems

    E-Print Network [OSTI]

    Akin, Bilal

    2009-05-15T23:59:59.000Z

    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...

  19. 9.373 Somatosensory and Motor Systems, Spring 2002

    E-Print Network [OSTI]

    Bizzi, Emilio

    General principles of motor control in biological systems. Structure and function of sensory receptors. Muscle structure and reflex arcs. Spinal cord. Locomotion. Oculomotor control. Cerebellar structure and function. Motor ...

  20. Modeling and characterization of a voice coil motor

    E-Print Network [OSTI]

    Brown, Ashley (Ashley A.)

    2012-01-01T23:59:59.000Z

    This thesis describes the development of a voice-coil motor that will allow viscous fluids to be delivered via a portable needle-free injection device. The chosen motor design features opposing magnets whose flux is channeled ...

  1. The Binding of Learning to Action in Motor Adaptation

    E-Print Network [OSTI]

    Gonzalez Castro, Luis Nicolas

    In motor tasks, errors between planned and actual movements generally result in adaptive changes which reduce the occurrence of similar errors in the future. It has commonly been assumed that the motor adaptation arising ...

  2. Transient Peak Currents in Permanent Magnet Synchronous Motors

    E-Print Network [OSTI]

    Paderborn, Universität

    synchronous motors (PMSM) became more and more popular for these applications. The performance of PMSM drives not be triggered at motor operating points, for which the SSC current behavior will damage the PMSM drive. An analysis of PMSM behavior with

  3. The US Motor Systems Market Assessment: Baseline and Survey Methods

    E-Print Network [OSTI]

    Rosenberg, M.

    of industrial motor systems. (E-Source 1993; EPRI 1992; Nadel et al. 1992; Easton Consultants 1996) These publications take as their principal point of departure the 1980 study Classification and Evaluation ofElectric Motors and Pumps sponsored... of motor drive energy among the three major application groups for the four manufacturing sectors and for manufacturing facilities as a whole. These estimates are drawn from the Midwest database and the EPRI Electric Motors Study (1992). The results...

  4. Motor Packaging with Consideration of Electromagnetic and Material...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Documents & Publications Motor Packaging with Consideration of Electromagnetic and Material Characteristics Alnico and Ferrite Hybrid Excitation Electric Machines Wireless Charging...

  5. Extended cage adjustable speed electric motors and drive packages

    DOE Patents [OSTI]

    Hsu, John S. (Oak Ridge, TN)

    1999-01-01T23:59:59.000Z

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

  6. VIRTUAL E-MOTOR AS A TOOL FOR THE DEVELOPMENT

    E-Print Network [OSTI]

    Paderborn, Universität

    is the motor model employed by the emulator. Standard models have limited performance, such as the linear PMSM

  7. Optimal Current Waveforms for Brushless Permanent Magnet Motors

    E-Print Network [OSTI]

    ;1 Introduction We consider the problem of controlling an AC permanent magnet synchronous motor (PMSM) by choosing

  8. Identification of new functions for BRCT domains

    E-Print Network [OSTI]

    Mohammad, Duaa H

    2008-01-01T23:59:59.000Z

    Our lab identified the tandem BRCT domains of PTIP function as a DNA damage responsive phospho binding domain that recognizes proteins phosphorylated by ATM and ATR after DNA damage. The PTIP tandem BRCT domains are ...

  9. Bifurcation and control of chaos in Induction motor drives

    E-Print Network [OSTI]

    Krishnendu Chakrabarty; Urmila Kar

    2014-10-24T23:59:59.000Z

    The induction motor controlled by Indirect Field Oriented Control (IFOC) is known to have high performance and better stability. This paper reports the dynamical behavior of an indirect field oriented control (IFOC) induction motor drive in the light of bifurcation theory. The speed of high performance induction motor drive is controlled by IFOC method. The knowledge of qualitative change of the behavior of the motor such as equilibrium points, limit cycles and chaos with the change of motor parameters and load torque are essential for proper control of the motor. This paper provides a numerical approach to understand better the dynamical behavior of an indirect field oriented control of a current-fed induction motor. The focus is on bifurcation analysis of the IFOC motor, with a particular emphasis on the change that affects the dynamics and stability under small variations of Proportional Integral controller (PI) parameters, load torque and k, the ratio of the rotor time constant and its estimate etc. Bifurcation diagrams are computed. This paper also attempts to discuss various types of the transition to chaos in the induction motor. The results of the obtained bifurcation simulations give useful guidelines for adjusting both motor model and PI controller parameters. It is also important to ensure desired operation of the motor when the motor shows chaotic behavior. Infinite numbers of unstable periodic orbits are embedded in a chaotic attractor. Any unstable periodic orbit can be stabilized by proper control algorithm. The delayed feedback control method to control chaos has been implemented in this system.

  10. Minireview 501 Kinesin and myosin: molecular motors with similar engines

    E-Print Network [OSTI]

    Rayment, Ivan

    Minireview 501 Kinesin and myosin: molecular motors with similar engines Ivan Rayment Structure molecu- lar motors that fulfill many of these tasks. These fall into three general classes of molecular motor exhibits the same architecture as myosin and suggests that these microtubule- and actin

  11. Propagating waves mediate information transfer in the motor cortex

    E-Print Network [OSTI]

    Hatsopoulos, Nicholas

    Propagating waves mediate information transfer in the motor cortex Doug Rubino1, Kay A Robbins2-delay reaching task, we found that these oscillations propagated as waves across the surface of the motor cortex oscillations propagated as waves across the primary motor (MI) and premotor (PMd) cortices as monkeys planned

  12. Renting Vehicles Renting Vehicles from MSU Motor Pool

    E-Print Network [OSTI]

    Lawrence, Rick L.

    Renting Vehicles Renting Vehicles from MSU Motor Pool Motor Pool/Transportation Services Motor Pool vehicles may ONLY be used for club-related travel). 2) Valid U.S. driver's license in good standing; 3) Completed Vehicle Use Authorization form for all drivers; and 4) Personal medical insurance

  13. Non-Motorized Facility Inventory CTS Annual Transportation Research Conference

    E-Print Network [OSTI]

    Minnesota, University of

    Non-Motorized Facility Inventory CTS Annual Transportation Research Conference May 23, 2012 Jesse an inventory and assessment of the non-motorized facilities along Carver County roadways 2. Identify the gaps-8 Safety Issues Identified #12;non-motorized facilities inventory #12;GIS mapping capabilities #12;An

  14. Summary of electric vehicle dc motor-controller tests

    SciTech Connect (OSTI)

    McBrien, E F; Tryon, H B

    1982-09-01T23:59:59.000Z

    Available performance data for production motors are usually of marginal value to the electric vehicle designer. To provide at least a partial remedy to this situation, tests of typical dc propulsion motors and controllers were conducted as part of the DOE Electric Vehicle Program. The objectives of this program were to evaluate the differences in the performance of dc motors when operating with chopper-type controllers and when operating on direct current; and to gain an understanding of the interactions between the motor and the controller which cause these differences. Toward this end, motor-controller tests performed by the NASA Lewis Research Center provided some of the first published data that quantified motor efficiency variations for both ripple-free (straight dc) and chopper modes of operation. Test and analysis work at the University of Pittsburgh explored motor-controller relationships in greater depth. And to provide additional data, 3E Vehicles tested two small motors, both on a dynamometer and in a vehicle, and the Eaton Corporation tested larger motors, using sophisticated instrumentation and digital processing techniques. All the motors tested were direct-current types. Of the separately excited types, seven were series wound and two were shunt wound. One self-excited permanent magnet type was also tested. Four of the series wound motors used brush shifting to obtain good commutation. In almost all cases, controller limitations constrained the test envelope so that the full capability of the motors could not be explored.

  15. Motor primitives in vertebrates and invertebrates Tamar Flash1

    E-Print Network [OSTI]

    Hochner, Binyamin

    Motor primitives in vertebrates and invertebrates Tamar Flash1 and Binyamin Hochner2 In recent years different lines of evidence have led to the idea that motor actions and movements in both vertebrates and invertebrates are composed of elementary building blocks. The entire motor repertoire can

  16. Learning Motor Control by Dancing YMCA Rikke Amilde Lvlid

    E-Print Network [OSTI]

    Paris-Sud XI, Universitť de

    Learning Motor Control by Dancing YMCA Rikke Amilde LÝvlid Department of Computer and Information desired movements a robot needs to learn which motor commands move the limb from one position to another and error. According to a hypothesis in developmental psychology, learning to control ones own motor

  17. Optimization of a Single Phase Ultrasonic Linear Motor

    E-Print Network [OSTI]

    Psaltis, Demetri

    Optimization of a Single Phase Ultrasonic Linear Motor Markus Flueckiger, Josīe M. Fernandez.flueckiger@epfl.ch Abstract--Piezoelectric ultrasonic motors are superior to elec- tromagnetic micromotors, because by the means of the finite element method (FEM) is a common approach for dimensioning piezoelectric motors

  18. The motor theory of social cognition: Pierre Jacob1

    E-Print Network [OSTI]

    Paris-Sud XI, Universitť de

    The motor theory of social cognition: a critique Pierre Jacob1 and Marc Jeannerod2 1 Institut Jean have considerably enlarged our understanding of human motor cognition. In particular, the activity- standing of a perceived action by means of the motor simulation of the agent's observed movements

  19. Behavioral/Systems/Cognitive Consolidation Patterns of Human Motor Memory

    E-Print Network [OSTI]

    Shadmehr, Reza

    Behavioral/Systems/Cognitive Consolidation Patterns of Human Motor Memory Sarah E. Criscimagna-Hemminger and Reza Shadmehr Laboratory for Computational Motor Control, Department of Biomedical Engineering, Johns of acquiring a new memory that competes with the old, effectively masking it? We considered motor memories

  20. Lubricating Oil Dominates Primary Organic Aerosol Emissions from Motor Vehicles

    E-Print Network [OSTI]

    Cohen, Ronald C.

    Lubricating Oil Dominates Primary Organic Aerosol Emissions from Motor Vehicles David R. Worton, United States *S Supporting Information ABSTRACT: Motor vehicles are major sources of primary organic characterization of motor vehicle POA emissions in a roadway tunnel with a mass closure of >60%. The observed POA

  1. PROOF COPY 004805HFS Molecular motors: a traffic cop within?

    E-Print Network [OSTI]

    Gross, Steven

    PROOF COPY 004805HFS PROOF COPY 004805HFS Molecular motors: a traffic cop within? M. A. Welte1 bidirectional, employing multiple plus- and minus-end directed motors. How cells regulate such transport in time approach to predict how much of transport can be understood just from our knowledge of the motors involved

  2. Reducing current reversal time in electric motor control

    DOE Patents [OSTI]

    Bredemann, Michael V

    2014-11-04T23:59:59.000Z

    The time required to reverse current flow in an electric motor is reduced by exploiting inductive current that persists in the motor when power is temporarily removed. Energy associated with this inductive current is used to initiate reverse current flow in the motor.

  3. Motor Pool Department The Motor Pool Department is responsible for the maintenance of over 550 Georgia Tech state

    E-Print Network [OSTI]

    value of $3,000 or more. · Perform preventive maintenance (PM) on vehicles, LSVs, golf cartsMotor Pool Department The Motor Pool Department is responsible for the maintenance of over 550

  4. 3M's Motor Challenge Showcase Demonstration Project

    E-Print Network [OSTI]

    Schultz, S. C.

    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...

  5. Physical context management for a motor vehicle

    DOE Patents [OSTI]

    Dixon, Kevin R. (Albuquerque, NM); Forsythe, James C. (Sandia Park, NM); Lippitt, Carl E. (Albuquerque, NM); Lippitt, legal representative, Lois Diane (Albuquerque, NM)

    2009-10-27T23:59:59.000Z

    Computer software for and a method of enhancing safety for an operator of a motor vehicle comprising employing a plurality of sensors of vehicle and operator conditions, matching collective output from the sensors against a plurality of known dangerous conditions, and preventing certain activity of the operator if a known dangerous condition is detected.

  6. Induction Motors Bearing Failures Detection and Diagnosis

    E-Print Network [OSTI]

    Boyer, Edmond

    using the mains current and the rotor speed measurement. The proposed approach is based on the stator current Park patterns. Induction motor stator currents are measured, recorded and used for Park patterns detection and diagnosis process. Experimental tests with artificial bearing damages results show

  7. Microtubule Motors in Microfluidics Maruti Uppalapati,

    E-Print Network [OSTI]

    Hancock, William O.

    CHAPTER 1 3 Microtubule Motors in Microfluidics Maruti Uppalapati, 1 Ying-Ming Huang, 2 Shankar division. Because emerging microfluidic devices uti- lize channel geometries similar to cellular scales in incorporating biomotor-driven transport into microfluidic devices. Kinesin-driven transport has the advantage

  8. MOTOR VEHICLE USE PROGRAM DRIVER SAFETY TIPS

    E-Print Network [OSTI]

    MOTOR VEHICLE USE PROGRAM DRIVER SAFETY TIPS Observe Speed Limits and Traffic Laws ≠ Allow - Employees who drive Institute or privately owned vehicles on Institute business must possess and carry person. Insurance - Employees who operate their privately owned vehicles on Institute business shall

  9. In Proceedings of the Automotive Software Workshop on Future Generation Software Architectures in the Automotive Domain, San Diego, CA, Jan. 10-12, 2004.

    E-Print Network [OSTI]

    Garlan, David

    In Proceedings of the Automotive Software Workshop on Future Generation Software Architectures in the Automotive Domain, San Diego, CA, Jan. 10-12, 2004. Two-tiered Architectural Design for Automotive Control two-tiered design methods for automotive control systems at Ford Motor Company. Currently, Ford has

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

    E-Print Network [OSTI]

    Litman, T.

    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...

  11. Traffic of cytoskeletal motors with disordered attachment rates

    E-Print Network [OSTI]

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

    2010-02-19T23:59:59.000Z

    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.

  12. History of HTS motor development at Reliance Electric

    SciTech Connect (OSTI)

    Schiferl, R. [Reliance Electric Co., Cleveland, OH (United States)

    1994-07-29T23:59:59.000Z

    A review of the High Temperature Superconducting (HTS) motor development program at Reliance Electric is presented. The project was initiated in 1987 by EPRI to investigate the use of high temperature superconducting materials in electric motors. Liquid nitrogen was proposed as the HTS winding coolant. The ultimate goal, motivation, motor type and HTS wire requirements as well as the program milestones are outlined. It was concluded that the HTS motor development has paralleled wire development; progress continues toward the goal of large horsepower HTS motors for commercial applications; the team is well on the way toward completing the design of a 125 hp, 1800 rpm motor with HTS coils cooled to 20 to 40 K; and the program is a vital step in the development of HTS motors.

  13. Extended-length downhole mud motor designed for more power

    SciTech Connect (OSTI)

    Krueger, V. [Baker Hughes Inteq, Celle (Germany)

    1996-03-25T23:59:59.000Z

    A new positive displacement motor (PDM) designed with an extended power section has several advantages over standard mud motors run alone or in tandem. Laboratory tests during design analysis and field tests have indicated these motors can outperform both conventional and coupled mud motors, providing higher penetration rates, longer bit runs, and easier steering. As requirements for improved performance and durability of PDMs have become more demanding, a design team began working on an entirely new motor series. Modern mechanical engineering computation methods were applied for the critical and relevant components of the drilling motor assembly. Design methods and laboratory testing of entire motors, especially for the elastomer stator section, required unique melding of modeling and design evaluation techniques.

  14. Domain walls riding the wave.

    SciTech Connect (OSTI)

    Karapetrov, G.; Novosad, V.; Materials Science Division

    2010-11-01T23:59:59.000Z

    Recent years have witnessed a rapid proliferation of electronic gadgets around the world. These devices are used for both communication and entertainment, and it is a fact that they account for a growing portion of household energy consumption and overall world consumption of electricity. Increasing the energy efficiency of these devices could have a far greater and immediate impact than a gradual switch to renewable energy sources. The advances in the area of spintronics are therefore very important, as gadgets are mostly comprised of memory and logic elements. Recent developments in controlled manipulation of magnetic domains in ferromagnet nanostructures have opened opportunities for novel device architectures. This new class of memories and logic gates could soon power millions of consumer electronic devices. The attractiveness of using domain-wall motion in electronics is due to its inherent reliability (no mechanical moving parts), scalability (3D scalable architectures such as in racetrack memory), and nonvolatility (retains information in the absence of power). The remaining obstacles in widespread use of 'racetrack-type' elements are the speed and the energy dissipation during the manipulation of domain walls. In their recent contribution to Physical Review Letters, Oleg Tretiakov, Yang Liu, and Artem Abanov from Texas A&M University in College Station, provide a theoretical description of domain-wall motion in nanoscale ferromagnets due to the spin-polarized currents. They find exact conditions for time-dependent resonant domain-wall movement, which could speed up the motion of domain walls while minimizing Ohmic losses. Movement of domain walls in ferromagnetic nanowires can be achieved by application of external magnetic fields or by passing a spin-polarized current through the nanowire itself. On the other hand, the readout of the domain state is done by measuring the resistance of the wire. Therefore, passing current through the ferromagnetic wire is the preferred method, as it combines manipulation and readout of the domain-wall state. The electrons that take part in the process of readout and manipulation of the domain-wall structure in the nanowire do so through the so-called spin transfer torque: When spin-polarized electrons in the ferromagnet nanowire pass through the domain wall they experience a nonuniform magnetization, and they try to align their spins with the local magnetic moments. The force that the electrons experience has a reaction force counterpart that 'pushes' the local magnetic moments, resulting in movement of the domain wall in the direction of the electron flow through the spin-transfer torque. The forces between the electrons and the local magnetic moments in the ferromagnet also create additional electrical resistance for the electrons passing through the domain wall. By measuring resistance across a segment of the nanowire, one determines if a domain wall is present; i.e., one can read the stored information. The interaction of the spin-polarized electrons with the domain wall in the ferromagnetic nanowire is not very efficient. Even for materials achieving high polarization of the free electrons, it is very difficult to move the magnetic domain wall. Several factors contribute to this problem, with imperfections of the ferromagnetic nanowire that cause domain-wall pinning being the dominant one. Permalloy nanowires, one of the best candidates for domain-wall-based memory and logic devices, require current densities of the order of 10{sup 8} A/cm{sup 2} in order to move a domain wall from a pinning well. Considering that this current has to pass through a relatively long wire, it is not very difficult to imagine that most of the energy will go to Joule heating. The efficiency of the process - the ratio of the energy converted to domain-wall motion to the total energy consumed - is comparable to that of an incandescent light bulb converting electricity to light. A step towards more efficient domain-wall-based memory devices is the advance of using alternating currents or curren

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

    SciTech Connect (OSTI)

    None

    2012-01-01T23:59:59.000Z

    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 todayís EV motors use rare earth magnets to efficiently provide torque to the wheels. QM Powerís 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.

  16. Dual power, constant speed electric motor system

    DOE Patents [OSTI]

    Kirschbaum, H.S.

    1984-07-31T23:59:59.000Z

    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.

  17. Dual power, constant speed electric motor system

    DOE Patents [OSTI]

    Kirschbaum, Herbert S. (Asheville, NC)

    1984-01-01T23:59:59.000Z

    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.

  18. Corona and Motor Voltage Interim Report

    SciTech Connect (OSTI)

    Hsu, J.S.

    2005-05-06T23:59:59.000Z

    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.

  19. Working With Your Motor Service Center

    E-Print Network [OSTI]

    Yung, C.

    reliability, life expectancy and benefits of additional features, upgrades or modifications. Figure 1. Repair or Replace Decision Process Table 1. Summary of Types ofRepairs Wound stator assemblies Bearing system Mechanical repairs ? Recondition ? Replace... of this procedure is the use of a stator core tester to quantify the condition of the core that is being repaired and control the process for removal of the old winding. In most cases, the rewound motor can have effi ciency levels comparable to the original...

  20. E

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA :Work with Jefferson LabDynein Motor DomainData---Driven

  1. Variable current speed controller for eddy current motors

    DOE Patents [OSTI]

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

    1982-03-12T23:59:59.000Z

    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.

  2. Transport of organelles by elastically coupled motor proteins

    E-Print Network [OSTI]

    Deepak Bhat; Manoj Gopalakrishnan

    2014-12-17T23:59:59.000Z

    Motor-driven intracellular transport is a complex phenomenon where multiple motor proteins attached to a cargo are simultaneously engaged in pulling activity, often leading to tug-of-war and bidirectional motion. However, most mathematical and computational models ignore the details of the motor-cargo interaction. A few papers have studied more realistic models of cargo transport by including elastic motor-cargo coupling, but either restricts the number of motors and/or uses purely phenomenological forms for energy-dependent hopping rates. Here, we study a generic Model In which N motors are elastically coupled to a cargo, which itself is subject to thermal noise in the cytoplasm and an additional external applied force. The motor-hopping rates are chosen to satisfy detailed balance with respect to the energy of stretching. The master equation is converted to a linear Fokker-Planck equation (LFPE), which yields the average positions of the cargo and motors, as well as their fluctuations and correlation functions. We apply this formalism to two specific forms of the hopping rates. Analytical results are obtained for mean cargo velocity, diffusion coefficient and the average force experienced by each motor for arbitrary N, and compared with numerical simulations. The expansion procedure also allows us to quantify load-sharing features among the cargo-bound motors. In general, we observe significant deviations between analytical predictions based on LFPE and the corresponding numerical results, which suggests a prominent role for higher order corrections.

  3. Cellulose binding domain fusion proteins

    DOE Patents [OSTI]

    Shoseyov, O.; Yosef, K.; Shpiegl, I.; Goldstein, M.A.; Doi, R.H.

    1998-02-17T23:59:59.000Z

    A cellulose binding domain (CBD) having a high affinity for crystalline cellulose and chitin is disclosed, along with methods for the molecular cloning and recombinant production. Fusion products comprising the CBD and a second protein are likewise described. A wide range of applications are contemplated for both the CBD and the fusion products, including drug delivery, affinity separations, and diagnostic techniques. 16 figs.

  4. Cellulose binding domain fusion proteins

    DOE Patents [OSTI]

    Shoseyov, Oded (Karmey Yosef, IL); Shpiegl, Itai (Rehovot, IL); Goldstein, Marc A. (Davis, CA); Doi, Roy H. (Davis, CA)

    1998-01-01T23:59:59.000Z

    A cellulose binding domain (CBD) having a high affinity for crystalline cellulose and chitin is disclosed, along with methods for the molecular cloning and recombinant production thereof. Fusion products comprising the CBD and a second protein are likewise described. A wide range of applications are contemplated for both the CBD and the fusion products, including drug delivery, affinity separations, and diagnostic techniques.

  5. Motor torque compensation of an induction electric motor by adjusting a slip command during periods of supposed change in motor temperature

    SciTech Connect (OSTI)

    Kelledes, William L. (Brighton, MI); St. John, Don K. (Livonia, MI)

    1992-01-01T23:59:59.000Z

    The present invention maintains constant torque in an inverter driven AC induction motor during variations in rotor temperature. It is known that the torque output of a given AC induction motor is dependent upon rotor temperature. At rotor temperatures higher than the nominal operating condition the rotor impedance increases, reducing the rotor current and motor torque. In a similar fashion, the rotor impedance is reduced resulting in increased rotor current and motor torque when the rotor temperature is lower than the nominal operating condition. The present invention monitors the bus current from the DC supply to the inverter and adjusts the slip frequency of the inverter drive to maintain a constant motor torque. This adjustment is based upon whether predetermined conditions implying increased rotor temperature or decreased rotor temperature exist for longer that a predetermined interval of time.

  6. Adjustable Speed AC Motor Drives-Applications Problems

    E-Print Network [OSTI]

    Enjeti, P.

    Adjustable Speed AC Motor Drives Applications Problems by Dr. P. Enjeti Power Quality Laboratory Department ofElectrical Engineering Texas A&M University College Station, TX 77843 Tel: 409-845-7466 Fax: 409-845-6259 Email..., it generates side effects, some which have been recognized only recently. This paper presents a comprehensive coverage of application issues of PWM inverter controlled ac motor drives which include damage to motor insulation due to reflected voltages caused...

  7. A motor drive control system for the Lidar Polarimeter

    E-Print Network [OSTI]

    Leung, Waiming

    1977-01-01T23:59:59.000Z

    A MOTOR DRIVE CONTROL SYSTEM FOR THE LIDAR POLARIMETER A Thesis by Waiming Leung Submitted to the Graduate College of Texas A/M University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCF, May 1977 Major... Subject: Electrical Engineering A MOTOR DRIVE CONTROL SYSTEM FOR THE LIDAR POLARIMETER A Thesis by Waiming Leung Approved as to style and content by: Chairman o Comm' ee ea o epartment Member Mem er May 1977 ABSTRACT A Motor Drive Control...

  8. High Temperature, Buried Permanent Magnet, Brushless DC Motor

    E-Print Network [OSTI]

    Zhang, Zhengxin

    2010-10-12T23:59:59.000Z

    Circuit Model Predictions of the motor performance are accomplished with a closed loop electric circuit incorporating the motor. The circuit is broken down into three sub-circuits which are the equivalent generator as motor rotating, the coil pair...,Kang, Jungu Lee, Zhiyang Wang and others who worked with me in Vibration Control and Electrormechanics Laboratory. I also would like to thank Dr. Jinfang Liu and Dr. Heeju Choi at Electron Energy Corporation who constantly support our work. Finally, thanks...

  9. Enhanced conversion of syngas to liquid motor fuels

    DOE Patents [OSTI]

    Coughlin, Peter K. (Yorktown Heights, NY); Rabo, Jule A. (Armonk, NY)

    1986-01-01T23:59:59.000Z

    Synthesis gas comprising carbon monoxide and hydrogen is converted to C.sub.5.sup.+ hydrocarbons suitable for use as liquid motor fuels by contact with a dual catalyst system capable of enhancing the selectivity of said conversion to motor fuel range hydrocarbons and the quality of the resulting motor fuel product. The catalyst composition employs a Fischer-Tropsch catalyst, together with a co-catalyst/support component comprising SAPO silicoaluminophosphate, non-zeolitic molecular sieve catalyst.

  10. Enhanced catalyst for conversion of syngas to liquid motor fuels

    DOE Patents [OSTI]

    Coughlin, Peter K. (Yorktown Heights, NY); Rabo, Jule A. (Armonk, NY)

    1985-01-01T23:59:59.000Z

    Synthesis gas comprising carbon monoxide and hydrogen is converted to C.sub.5.sup.+ hydrocarbons suitable for use as liquid motor fuels by contact with a dual catalyst system capable of enhancing the selectivity of said conversion to motor fuel range hydrocarbons and the quality of the resulting motor fuel product. The catalyst composition employs a Fischer-Tropsch catalyst, together with a co-catalyst/support component comprising SAPO silicoaluminophosphate, non-zeolitic molecular sieve catalyst.

  11. Enhanced catalyst for conversion of syngas to liquid motor fuels

    DOE Patents [OSTI]

    Coughlin, P.K.; Rabo, J.A.

    1985-12-03T23:59:59.000Z

    Synthesis gas comprising carbon monoxide and hydrogen is converted to C[sub 5][sup +] hydrocarbons suitable for use as liquid motor fuels by contact with a dual catalyst system capable of enhancing the selectivity of said conversion to motor fuel range hydrocarbons and the quality of the resulting motor fuel product. The catalyst composition employs a Fischer-Tropsch catalyst, together with a co-catalyst/support component comprising a SAPO silicoaluminophosphate, non-zeolitic molecular sieve catalyst.

  12. Motor Modeling and Position Control Lab Week 3: Closed Loop Control

    E-Print Network [OSTI]

    Krovi, Venkat

    Motor Modeling and Position Control Lab Week 3: Closed Loop Control 1. Review In the first week of motor modeling lab, a mathematical model of a DC motor from first principles was derived to obtain specifically for this motor model. In the second week, a physical DC motor (Quanser SRV-02) was used for open

  13. Electric Motor Drive Selection Issues for HEV Propulsion Systems: A Comparative Study

    E-Print Network [OSTI]

    Paris-Sud XI, Universitť de

    Electric Motor Drive Selection Issues for HEV Propulsion Systems: A Comparative Study M. Zeraoulia1 and on an effective comparison of the performances of the four main electric propulsion systems that are the dc motor, the induction motor, the permanent magnet synchronous motor, and the switched reluctance motor. The main

  14. Building Green in Greensburg: Dwane Shank Motors GM Dealership

    Office of Energy Efficiency and Renewable Energy (EERE)

    This poster highlights energy efficiency, renewable energy, and sustainable features of the high-performing Shank Motors GM Dealership building in Greensburg, Kansas.

  15. Table 44. Refiner Motor Gasoline Volumes by Formulation, Sales...

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    250 Energy Information AdministrationPetroleum Marketing Annual 1999 Table 44. Refiner Motor Gasoline Volumes by Formulation, Sales Type, PAD District, and State (Thousand Gallons...

  16. Table 32. Conventional Motor Gasoline Prices by Grade, Sales...

    Gasoline and Diesel Fuel Update (EIA)

    Information AdministrationPetroleum Marketing Annual 1998 Table 32. Conventional Motor Gasoline Prices by Grade, Sales Type, PAD District, and State (Cents per Gallon...

  17. Table 44. Refiner Motor Gasoline Volumes by Formulation, Sales...

    Gasoline and Diesel Fuel Update (EIA)

    - - - - W W - - - - - - See footnotes at end of table. 44. Refiner Motor Gasoline Volumes by Formulation, Sales Type, PAD District, and State 292 Energy...

  18. Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type...

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    220 Energy Information AdministrationPetroleum Marketing Annual 1998 Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type, PAD District, and State (Thousand Gallons per...

  19. Table 34. Reformulated Motor Gasoline Prices by Grade, Sales...

    Gasoline and Diesel Fuel Update (EIA)

    Information AdministrationPetroleum Marketing Annual 1998 Table 34. Reformulated Motor Gasoline Prices by Grade, Sales Type, PAD District, and Selected States (Cents per...

  20. Table 48. Prime Supplier Sales Volumes of Motor Gasoline by...

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    Petroleum Marketing Annual 1995 Table 48. Prime Supplier Sales Volumes of Motor Gasoline by Grade, Formulation, PAD District, and State (Thousand Gallons per Day) -...

  1. Petroleum Products Table 31. Motor Gasoline Prices by Grade...

    Gasoline and Diesel Fuel Update (EIA)

    table. 56 Energy Information AdministrationPetroleum Marketing Annual 2000 Table 31. Motor Gasoline Prices by Grade, Sales Type, PAD District, and State (Cents per Gallon...

  2. Table 34. Reformulated Motor Gasoline Prices by Grade, Sales...

    Gasoline and Diesel Fuel Update (EIA)

    Information Administration Petroleum Marketing Annual 1995 Table 34. Reformulated Motor Gasoline Prices by Grade, Sales Type, PAD District, and State (Cents per Gallon...

  3. Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type...

    Gasoline and Diesel Fuel Update (EIA)

    220 Energy Information AdministrationPetroleum Marketing Annual 1999 Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type, PAD District, and State (Thousand Gallons per...

  4. Table 35. Refiner Motor Gasoline Prices by Grade, Sales Type...

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    Energy Information Administration Petroleum Marketing Annual 1995 Table 35. Refiner Motor Gasoline Prices by Grade, Sales Type, PAD District, and State (Cents per Gallon...

  5. Table 35. Refiner Motor Gasoline Prices by Grade, Sales Type...

    Gasoline and Diesel Fuel Update (EIA)

    134 Energy Information AdministrationPetroleum Marketing Annual 1998 Table 35. Refiner Motor Gasoline Prices by Grade, Sales Type, PAD District, and State (Cents per Gallon...

  6. Petroleum Products Table 43. Refiner Motor Gasoline Volumes...

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    220 Energy Information AdministrationPetroleum Marketing Annual 2000 Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type, PAD District, and State (Thousand Gallons per...

  7. Table 48. Prime Supplier Sales Volumes of Motor Gasoline by...

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    Petroleum Marketing Annual 1998 Table 48. Prime Supplier Sales Volumes of Motor Gasoline by Grade, Formulation, PAD District, and State (Thousand Gallons per Day) -...

  8. Table 32. Conventional Motor Gasoline Prices by Grade, Sales...

    Gasoline and Diesel Fuel Update (EIA)

    - - - - W W - - - - - - See footnotes at end of table. 32. Conventional Motor Gasoline Prices by Grade, Sales Type, PAD District, and State 86 Energy Information...

  9. Table 32. Conventional Motor Gasoline Prices by Grade, Sales...

    U.S. Energy Information Administration (EIA) Indexed Site

    Information Administration Petroleum Marketing Annual 1995 Table 32. Conventional Motor Gasoline Prices by Grade, Sales Type, PAD District, and State (Cents per Gallon...

  10. Petroleum Products Table 31. Motor Gasoline Prices by Grade...

    U.S. Energy Information Administration (EIA) Indexed Site

    table. 56 Energy Information Administration Petroleum Marketing Annual 1995 Table 31. Motor Gasoline Prices by Grade, Sales Type, PAD District, and State (Cents per Gallon...

  11. Table 48. Prime Supplier Sales Volumes of Motor Gasoline by...

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    Petroleum Marketing Annual 1999 Table 48. Prime Supplier Sales Volumes of Motor Gasoline by Grade, Formulation, PAD District, and State (Thousand Gallons per Day) -...

  12. Table 32. Conventional Motor Gasoline Prices by Grade, Sales...

    U.S. Energy Information Administration (EIA) Indexed Site

    - - - - 64.7 64.7 - - - - - - See footnotes at end of table. 32. Conventional Motor Gasoline Prices by Grade, Sales Type, PAD District, and State 86 Energy Information...

  13. Table 33. Oxygenated Motor Gasoline Prices by Grade, Sales Type...

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    - - - - - - - - - - - - See footnotes at end of table. 33. Oxygenated Motor Gasoline Prices by Grade, Sales Type, PAD District, and State 116 Energy Information...

  14. Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type...

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    Energy Information Administration Petroleum Marketing Annual 1995 Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type, PAD District, and State (Thousand Gallons per...

  15. Petroleum Products Table 43. Refiner Motor Gasoline Volumes...

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    Energy Information Administration Petroleum Marketing Annual 1995 Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type, PAD District, and State (Thousand Gallons per...

  16. Table 33. Oxygenated Motor Gasoline Prices by Grade, Sales Type...

    Gasoline and Diesel Fuel Update (EIA)

    Information Administration Petroleum Marketing Annual 1995 Table 33. Oxygenated Motor Gasoline Prices by Grade, Sales Type, PAD District, and State (Cents per Gallon...

  17. Table 44. Refiner Motor Gasoline Volumes by Formulation, Sales...

    U.S. Energy Information Administration (EIA) Indexed Site

    250 Energy Information AdministrationPetroleum Marketing Annual 1998 Table 44. Refiner Motor Gasoline Volumes by Formulation, Sales Type, PAD District, and State (Thousand Gallons...

  18. Table 34. Reformulated Motor Gasoline Prices by Grade, Sales...

    Gasoline and Diesel Fuel Update (EIA)

    Information AdministrationPetroleum Marketing Annual 1999 Table 34. Reformulated Motor Gasoline Prices by Grade, Sales Type, PAD District, and Selected States (Cents per...

  19. Table 44. Refiner Motor Gasoline Volumes by Formulation, Sales...

    Gasoline and Diesel Fuel Update (EIA)

    Energy Information Administration Petroleum Marketing Annual 1995 Table 44. Refiner Motor Gasoline Volumes by Formulation, Sales Type, PAD District, and State (Thousand Gallons...

  20. Table 35. Refiner Motor Gasoline Prices by Grade, Sales Type...

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    134 Energy Information AdministrationPetroleum Marketing Annual 1999 Table 35. Refiner Motor Gasoline Prices by Grade, Sales Type, PAD District, and State (Cents per Gallon...

  1. Integration of Novel Flux Coupling Motor and Current Source Inverter...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Current Source Inverters for HEVs and FCVs Vehicle Technologies Office Merit Review 2014: Wireless Charging Integration of Novel Flux Coupling Motor and Current Source Inverter...

  2. Integration of Novel Flux Coupling Motor and Current Source Inverter...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Merit Review and Peer Evaluation ape034hsu2011p.pdf More Documents & Publications Integration of Novel Flux Coupling Motor and Current Source Inverter Novel Flux Coupling...

  3. adapted phi29 motor: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    an adjustment in the tension felt by the transduction channels. It has been suggested that steady- state tension is regulated a mathematical model for an adaptation motor...

  4. ac motor control: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Summary: ??Permanent magnet Brushless DC motor drives are being employed in newlinemany variable speed applications due to their high efficiency, silent operation, newlinecompact...

  5. alternating current motors: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ??Permanent magnet Brushless DC motor drives are being employed in newlinemany variable speed applications due to their high efficiency, silent operation, newlinecompact size,...

  6. ac motor drives: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    - TxSpace Summary: and Quantitative Account Gear-Train Servo Error Types. IV. DC VARIABLE SPEED MOTOR DRIVE DESIGN CONSIDERATIONS AND RFALIZATION. Introduction. 27 29 30...

  7. ac motor controller: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Summary: ??Permanent magnet Brushless DC motor drives are being employed in newlinemany variable speed applications due to their high efficiency, silent operation, newlinecompact...

  8. ac motor drive: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    - TxSpace Summary: and Quantitative Account Gear-Train Servo Error Types. IV. DC VARIABLE SPEED MOTOR DRIVE DESIGN CONSIDERATIONS AND RFALIZATION. Introduction. 27 29 30...

  9. attitude control motor: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    time-varying dynamics, and hence their speed control is a challenging problem in the industry. The advent of vector control techniques has solved induction motor control problems....

  10. Carbonyl Emissions from Gasoline and Diesel Motor Vehicles

    E-Print Network [OSTI]

    Jakober, Chris A.

    2008-01-01T23:59:59.000Z

    emissions from gasoline and diesel motor vehicles. Environ.of four dilutions of diesel engine exhaust for a subchronicautomobiles and heavy-duty diesel trucks. Environ. Sci.

  11. Motor Packaging with Consideration of Electromagnetic and Material...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    and Peer Evaluation ape035millerp.pdf More Documents & Publications Alnico and Ferrite Hybrid Excitation Electric Machines Motor Packaging with Consideration of...

  12. Department of Electrical Engineering Fall 2009 Electridyne Motor

    E-Print Network [OSTI]

    Demirel, Melik C.

    ∑ Utilized Solidworks to generate Stator and Rotor Lamination designs and a 3D representation of our design have the process to develop other motor designs. #12;

  13. ORNL, Hyundai Motor collaborating through new R&D agreement ...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    and its affiliate Kia Motors Corp. will be identifying and providing R&D needs of the automotive industry; providing feedback and evaluation technology concepts; consulting...

  14. BPM Motors in Residential Gas Furnaces: What are the Savings?

    E-Print Network [OSTI]

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

    2006-01-01T23:59:59.000Z

    standby power consumption in BPM furnaces is significantlytotal electricity consumption by BPM furnaces. This is notOverall, it appears the BPM motors used in furnaces offer

  15. Instrinsic oscillations of treadmilling microtubules in a motor bath

    E-Print Network [OSTI]

    Sudipto Muhuri; Ignacio Pagonabarraga; Jaume Casademunt

    2011-09-16T23:59:59.000Z

    We analyse the dynamics of overlapping antiparallel treadmilling microtubules in the presence of crosslinking processive motor proteins that counterbalance an external force. We show that coupling the force-dependent velocity of motors and the kinetics of motor exchange with a bath in the presence of treadmilling leads generically to oscillatory behavior. In addition we show that coupling the polymerization kinetics to the external force through the kinetics of the crosslinking motors can stabilize the oscillatory instability into finite-amplitude nonlinear oscillations and may lead to other scenarios, including bistability.

  16. Overview: Advanced Power Electronics and Electric Motors (APEEM...

    Broader source: Energy.gov (indexed) [DOE]

    rogers.pdf More Documents & Publications Advanced Power Electronics and Electric Motors R&D Advnaced Power Electronics and Electric Machines (APEEM) R&D Program Overview Electric...

  17. Aging assessment of large electric motors in nuclear power plants

    SciTech Connect (OSTI)

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

    1996-03-01T23:59:59.000Z

    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.

  18. How to Improve Productivity with Energy-Efficient Motors

    E-Print Network [OSTI]

    Curley, J. P.

    1983-01-01T23:59:59.000Z

    by most Industries. The electrIc motor. Fig. 2 Electric motors have always been relatIvely efficIent, that Is they've really been qUite good at turning electrical energy Into mechanical ener gy. The average motor used by Industry Is a 25 HP unit... with a standard efficIency of about 89% which means that all but 11% of the kilowatts consumed by a motor perform useful work. It's precisely that 11%, the energy that' 5 lost I n the form of heat, that we've reduced. Reduced on the average by about...

  19. Motor gasolines, winter 1981-1982

    SciTech Connect (OSTI)

    Shelton, E M

    1982-07-01T23:59:59.000Z

    Analytical data for 905 samples of motor gasoline, were collected from service stations throughout the country and were analyzed in the laboratories of various refiners, motor manufacturers, and chemical companies. The data 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). The samples represent the products of 30 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 winter 1959-1960 survey for the leaded gasolines, and since winter 1979-1980 survey for the unleaded gasolines. 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 87.4 for unleaded below 90.0, 91.7 for unleaded 90.0 and above, and 88.9 for leaded below 93.0. Only one sample was reported as 93.0 for leaded gasolines with an antiknock index (R+M)/2 93.0 and above.

  20. Solid State AC Motor Drives - Conservation Perspectives†

    E-Print Network [OSTI]

    Mohan, N.; Ferraro, R. J.

    1982-01-01T23:59:59.000Z

    Figure 4. Voltage and Current Waveforms. It may be useful to discuss the mechanism by which this concept results in energy savings. Prudent design of a machine requires that the motor losses be a minimum near the rated output condition when... range at constant torque, a 548 ESL-IE-82-04-106 Proceedings from the Fourth Industrial Energy Technology Conference, Houston, TX, April 4-7, 1982 (a) I '--- "'" oJ I I ReClifiCoiion;:mo;:;rsion I Fiilered I I I Load ~Reclifitotion J 1 Current...

  1. Electric machine for hybrid motor vehicle

    DOE Patents [OSTI]

    Hsu, John Sheungchun (Oak Ridge, TN)

    2007-09-18T23:59:59.000Z

    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.

  2. Synchronous operation of the BLDC motor

    E-Print Network [OSTI]

    Guzelgunler, Yilcan

    1998-01-01T23:59:59.000Z

    Back EMF 19 22 B. 3. Freewheeling Diode Conduction. . B. 4. Back EMF Integration. 27 30 C. Flux Linkage Based Method. . 33 CHAPTER Page III SENSORLESS START-UP METHODS. . 39 A. Synchronous Start-up. B. Eddy Current. . C. Diagnostic Current... Demagnetization characteristic of a magnet. 7 Flux linkage and induced voltage of phase a, 14 8 Converter configuration of BLDC motor. 19 9 Terminal voltage of phase a. . . . 19 10 Low pass filters and comparator circuit. 11 Wave forms showing how switching...

  3. Sensorless performance evaluation of induction motors

    E-Print Network [OSTI]

    Ahmed, Shehab

    2000-01-01T23:59:59.000Z

    presence of both static and dynamic eccentricity (mixed eccentricity), there arises components given by [8] (3 3) irrespective of p and R, where f, is the machine rotational frequency. This will bc shov n lor the case of the 3hp and 300hp machines... 3. 3. Generation of Saliency Induced Harmonics in the Motor Line Current. . . . . 27 3. 3. 1. Healthy Machine. 28 34 3. 5 3. 3. 2. Machine with Static Eccennicity 3. 3. 3. Machine with Dynamic Eccentricity. 3. 3. 4. Machine with Mixed...

  4. Advanced motor driven clamped borehole seismic receiver

    DOE Patents [OSTI]

    Engler, Bruce P. (Sandoval County, NM); Sleefe, Gerard E. (Bernalillo County, NM); Striker, Richard P. (Bernalillo County, NM)

    1993-01-01T23:59:59.000Z

    A borehole seismic tool including a borehole clamp which only moves perpendicular to the borehole. The clamp is driven by an electric motor, via a right angle drive. When used as a seismic receiver, the tool has a three part housing, two of which are hermetically sealed. Accelerometers or geophones are mounted in one hermetically sealed part, the electric meter in the other hermetically sealed part, and the clamp and right angle drive in the third part. Preferably the tool includes cable connectors at both ends. Optionally a shear plate can be added to the clamp to extend the range of the tool.

  5. EcoMotors | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluating A Potential MicrohydroDistrictInformationEauEcoMotors Jump to:

  6. Motor Gasoline Sales Through Retail Outlets Prices

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade1 Source: Office of FossilFoot) Year JanCubicXIV. MoroccoMotor894

  7. List of Motors Incentives | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOf Kilauea Volcano,LakefrontLighthouseEvaporativesourcesourceMotors

  8. Turn Motors Off When Not in Use

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOriginEducationVideoStrategic|IndustrialCenterMarch 4; RSVP byof Energy TurbinesTurn Motors

  9. When to Purchase Premium Efficiency Motors

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your DensityEnergy U.S.-China Electric VehicleCenters | Department ofofto Purchase Premium Efficiency Motors

  10. Training: Motor Systems | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the.pdfBreakingMayDepartmentTest for PumpingThe|of Energy TopCharterCompressedMotor

  11. Tesla Motors Inc | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro Industries PvtStratosolar JumpTennessee/Wind Resources <70079¬į,Terryville,Tesla Motors Inc

  12. Trexa Motor Corporation TMC | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro IndustriesTown of Ladoga, Indiana (Utility Company)LibraryDatasetsElectricRiverTrexa Motor

  13. Improving Motor and Drive System Performance

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(Fact Sheet),EnergyImprovement of the Lost FoamCooling and ImprovingMotor and

  14. Motor Repair Tech Brief | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the.pdfBreaking ofOil &315_ArnibanPriorityof EnergyDepartmentRepair Tech Brief Motor

  15. MotorMaster+ International | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the.pdfBreaking ofOil &315_ArnibanPriorityof EnergyDepartmentRepair Tech BriefMotor

  16. MotorMaster+ | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the.pdfBreaking ofOil &315_ArnibanPriorityof EnergyDepartmentRepair Tech MotorMaster+

  17. Optimization of induction motor efficiency: Volume 2, Single-phase induction motors: Final report

    SciTech Connect (OSTI)

    Fuchs, E.F.; Huang, H.; Vandenput, A.J.; Holl, J.; Appelbaum, J.; Zak, Z.; Erlicki, M.S.

    1987-05-01T23:59:59.000Z

    The optimal design of the motor dimensions, the capacitance of the run capacitor, the winding distribution and the choice of the electrical steel are the most important sources for an improvement of the efficiency of modern single-phase induction motors for given performance and material cost constraints. The formulation of the techniques which realize this optimization is based on nonlinear programming approaches. The Method of Boundary Search Along Active Constraints is used for the optimal design of the motor dimensions of a commercially available 2 hp, 115 V single-phase induction motor. Based on the optimization results due to the above mentioned four optimization components, the relationships between efficiency, power factor, cost, active materials and the values of the capacitance of the run capacitor are studied and the limited validity of the model law is discussed. This report also explains why the Wanlass retrofit improves efficiency and details the advantages and disadvantages of such a retrofitting as compared with the operation in the standard configuration.

  18. Performance Assessment Report Domain CHP System

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    Performance Assessment Report for the Domain CHP System November 2005 By Burns & McDonnell Engineering #12;Domain CHP System Performance Assessment Report for the Packaged Cooling, Heating and Power

  19. Magnetic domain walls driven by interfacial phenomena

    E-Print Network [OSTI]

    Emori, Satoru

    2014-01-01T23:59:59.000Z

    A domain wall in a ferromagnetic material is a boundary between differently magnetized regions, and its motion provides a convenient scheme to control the magnetization state of the material. Domain walls can be confined ...

  20. 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]

    Stanford University

    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

  1. DOMAIN DECOMPOSITION FOR A MIXED FINITE ELEMENT ...

    E-Print Network [OSTI]

    SIAM (#1) 1035 2001 Apr 10 12:32:38

    2003-03-12T23:59:59.000Z

    ... porous media, where highly discontinuous conductivity coefficients are also ...... [14] B. Smith, P. BjÝrstad, and W. Gropp, Domain Decomposition, Cambridge

  2. Effective Supergravity for Supergravity Domain Walls

    E-Print Network [OSTI]

    M. Cvetic; N. D. Lambert

    2002-05-23T23:59:59.000Z

    We discuss the low energy effective action for the Bosonic and Fermionic zero-modes of a smooth BPS Randall-Sundrum domain wall, including the induced supergravity on the wall. The result is a pure supergravity in one lower dimension. In particular, and in contrast to non-gravitational domain walls or domain walls in a compact space, the zero-modes representing transverse fluctuations of domain wall have vanishing action.

  3. Translating Sleep Research: Does Sleep Promote Learning a Functional Motor Task?

    E-Print Network [OSTI]

    Al-Sharman, Alham Jehad

    2013-05-31T23:59:59.000Z

    Sleep has been demonstrated to produce off-line improvements in motor learning in young adults. Evidence of sleep-dependent off-line motor learning has been demonstrated across a wide variety of simple motor tasks that ...

  4. Kieffer Paper Mill's Recycled Fiber Mill and PSI Energy's High Efficiency Motors Plan

    E-Print Network [OSTI]

    Myers, J. A.

    efficiency would yield significant energy savings. PSI Energy was able to help Kieffer examine the economics of high efficiency motors, and through the PSI Energy High Efficiency Motors Plan encouraged Kieffer Paper Mills to purchase energy efficient motors...

  5. Methods for Rapid Estimation of Motor Input Power in HVAC Assessments

    E-Print Network [OSTI]

    Christman, Kevin D.

    2011-08-08T23:59:59.000Z

    In preliminary building energy assessments, it is often desired to estimate a motor's input power. Motor power estimates in this context should be rapid, safe, and noninvasive. Existing methods for motor input power estimation, such as direct...

  6. Effects on motor neuron development of altering peripheral targets in embryonic leeches (Hirudo verbana)

    E-Print Network [OSTI]

    Nelson, Sandahl Hygeia

    2009-01-01T23:59:59.000Z

    on the Generation of the Motor Program for Swimming by thebranches in a leech motor neuron in vivo. J Neurobiol. 43(We also saw that forcing motor neurons to innervate these Ď

  7. A role for motor neurons in the development and function of the spinal circuitry governing locomotion

    E-Print Network [OSTI]

    Gallarda, Benjamin William

    2010-01-01T23:59:59.000Z

    F. (2010). A neural basis for motor primitives in the spinal2008). Segregation of axial motor and sensory pathways viaT. M. (2008). Hox repertoires for motor neuron diversity and

  8. 2006 Special issue Perceiving the unusual: Temporal properties of hierarchical motor

    E-Print Network [OSTI]

    Demiris, Yiannis

    2006 Special issue Perceiving the unusual: Temporal properties of hierarchical motor of demonstrated actions to the observer robot's equivalent motor representations (Alissandrakis, Nehaniv visual information and retrieving motor representations, differ in the way that the perceptual

  9. Speech motor control variables in the production of voicing contrasts and emphatic accent†

    E-Print Network [OSTI]

    Mills, Timothy Ian Pandachuck

    2009-11-26T23:59:59.000Z

    This dissertation looks at motor control in speech production. Two specific questions emerging from the speech motor control literature are studied: the question of articulatory versus acoustic motor control targets, and ...

  10. Do Motor-Vehicle Users in the US Pay Their Way?

    E-Print Network [OSTI]

    Delucchi, Mark

    2007-01-01T23:59:59.000Z

    expenditures related to motor-vehicle use is a key factor insuch as highway patrol, for motor-vehicle users (Delucchi,fees speci?cally related to motor-vehicle use A2.1. Taxes

  11. Autoinhibition regulates the motility of the C-elegans intraflagellar transport motor OSM-3

    E-Print Network [OSTI]

    Imanishi, M; Endres, N F; Gennerich, A; Vale, Ronald D

    2006-01-01T23:59:59.000Z

    processive actin-based motor. Nature. Ou, G. , O.E. Blacque,of intraflagellar transport motors. Nature. 436:583Ė587.subunit and the Kinesin-2 motor protein, KIF17. Curr. Biol.

  12. Fault Detection and Diagnostics for Non-Intrusive Monitoring Using Motor Harmonics

    E-Print Network [OSTI]

    Orji, Uzoma A.

    Harmonic analysis of motor current has been used to track the speed of motors for sensorless control. Algorithms exist that track the speed of a motor given a dedicated stator current measurement, for example. Harmonic ...

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

    E-Print Network [OSTI]

    Paderborn, Universität

    motors (PMSM) increased significantly. Thus, this motor type becomes more and more attractive for drive-axis current of the motor must not be controlled to zero, as it is common with non-salient PMSM. Thus

  14. Magnetic domains were not found in tetrataenite.

    E-Print Network [OSTI]

    Mountziaris, T. J.

    collaboration with electrical engineers to produce the proper magnetic tape to view domains in. Observing and Industrial Engineering, University of Massachusetts, Amherst, MA 01003 Future Work While the magnetism∑ Magnetic domains were not found in tetrataenite. ∑ Figure 4 shows magnetic domains found

  15. Concrete Domains and Nominals United Carlos Areces

    E-Print Network [OSTI]

    Lutz, Carsten

    Concrete Domains and Nominals United Carlos Areces University of Amsterdam The Netherlands carlos(D), the extension of ALC with concrete domains, is known to be PSpace-complete, in this article we show on the concrete domain D used). The proof is by a reduction of a NExpTime-complete variant of the domino problem

  16. Labelling Heuristics for CSP Application Domains

    E-Print Network [OSTI]

    Rossi, Francesca

    Labelling Heuristics for CSP Application Domains Zeynep K#16;z#16;ltan Computer Science Division an application domain as a family of CSP models, so as to exhibit the generic constraint store for all models store and the domain propagation during search is analysed, so as to infer | before modelling any CSP

  17. MOTOR SCHEMAS IN ROBOT LEARNING Lynne E. Parker

    E-Print Network [OSTI]

    Parker, Lynne E.

    allows robot learning to scale to more complex robots or tasks, thus making practical applicationsMOTOR SCHEMAS IN ROBOT LEARNING Lynne E. Parker Department of Electrical Engineering and Computer in robot learning; Macro actions in robot learning; Basis behaviors for robot learning. Definition Motor

  18. Adaptive robust motion control of linear motors for precision manufacturing

    E-Print Network [OSTI]

    Yao, Bin

    for widespread use in high-speed/high-accuracy positioning systems [1≠3]. In general, the linear motor hasAdaptive robust motion control of linear motors for precision manufacturing Bin Yao *, Li Xu School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907, USA Received 6 October 1999; accepted 11

  19. Computational analysis of temperature rise phenomena in electric induction motors

    E-Print Network [OSTI]

    Melnik, Roderick

    machines in general, and induction motors in particular, temperature limits is a key factor affectingComputational analysis of temperature rise phenomena in electric induction motors Ying Huai Kraftwerkstechnik, Petersenstra√?e 30, 64287 Darmstadt, Germany b Faculty of Science and Engineering, Mads Clausen

  20. Minireview R67 ATP synthase: two motors, two fuels

    E-Print Network [OSTI]

    Oster, George

    Minireview R67 ATP synthase: two motors, two fuels George Oster* and Hongyun Wang FoF1 ATPase is the universal protein responsible for ATP synthesis. The enzyme comprises two reversible rotary motors: Fo and signaling events throughout the cell. ATP synthase, also known as FoF1 ATPase, is the principle

  1. Molecular motors DOI: 10.1002/smll.200500223

    E-Print Network [OSTI]

    Hancock, William O.

    . Hancock* Kinesin molecular motors harness the energy of ATP hy- drolysis to transport cargo epifluorescence or evanescent wave microscopy, and show that motor function is unaffected by particle fluorophores can be visualized by simple epifluorescence microscopy rather than the evanescent wave microscopy

  2. Comparative Study of Switched Reluctance Motors Performances for Two Current

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    of machines as high torque ripple, high acoustic noise and vibration limit their industrial applications [1Comparative Study of Switched Reluctance Motors Performances for Two Current Distributions a 3-phase, 6-slot, and 4-pole Mutually Coupled Switched Reluctance Motor (MCSRM 6/4) with new current

  3. Using Crude Corrective Movements to Learn Accurate Motor Programs for

    E-Print Network [OSTI]

    Fagg, Andrew H.

    Using Crude Corrective Movements to Learn Accurate Motor Programs for Reaching Andrew H. Fagg University School of Medicine Chicago, IL 60611 Abstract A computational model that uses crude corrective of #12; Fagg, Zelevinsky, Barto, & Houk: Crude Corrective Movements for Learning Accurate Motor Programs

  4. EE443L Lab 2: Modeling a DC Motor Introduction

    E-Print Network [OSTI]

    Wedeward, Kevin

    and add conversion factors. Copy the LabVIEW VI lab2.vi and its associated subVI Altera the four conversion factors. Motor voltage is measured with a voltage divider to ensure DAQ card analog: The DC motor is a common actuator in control systems that converts electrical energy into rotational

  5. Indices to detect Hopf bifurcation in Induction motor drives

    E-Print Network [OSTI]

    Krishnendu Chakrabarty; Urmila Kar

    2014-10-24T23:59:59.000Z

    The loss of stability of induction motor controlled by Indirect Field Oriented Control (IFOC) is a matter of great concern of operators and design engineers. This paper reports indices to detect and predict stability problem such as system oscillations. Oscillations as a result of loss of stability, due to Hopf bifurcation, for different parameter values of IFOC motor are studied using the proposed indices.

  6. Motor-Driven Bacterial Flagella and Buckling Instabilities

    E-Print Network [OSTI]

    Reinhard Vogel; Holger Stark

    2012-01-03T23:59:59.000Z

    Many types of bacteria swim by rotating a bundle of helical filaments also called flagella. Each filament is driven by a rotary motor and a very flexible hook transmits the motor torque to the filament. We model it by discretizing Kirchhoff's elastic-rod theory and develop a coarse-grained approach for driving the helical filament by a motor torque. A rotating flagellum generates a thrust force, which pushes the cell body forward and which increases with the motor torque. We fix the rotating flagellum in space and show that it buckles under the thrust force at a critical motor torque. Buckling becomes visible as a supercritical Hopf bifurcation in the thrust force. A second buckling transition occurs at an even higher motor torque. We attach the flagellum to a spherical cell body and also observe the first buckling transition during locomotion. By changing the size of the cell body, we vary the necessary thrust force and thereby obtain a characteristic relation between the critical thrust force and motor torque. We present a sophisticated analytical model for the buckling transition based on a helical rod which quantitatively reproduces the critical force-torque relation. Real values for motor torque, cell body size, and the geometry of the helical filament suggest that buckling should occur in single bacterial flagella. We also find that the orientation of pulling flagella along the driving torque is not stable and comment on the biological relevance for marine bacteria.

  7. Evolutionary Search for Smooth Maps in Motor Control Unit Calibration

    E-Print Network [OSTI]

    Zell, Andreas

    Evolutionary Search for Smooth Maps in Motor Control Unit Calibration Jan Poland, Kosmas Kn of maps, which is motivated from motor control unit calibration. The problem is of a particular in- terest) for combustion engines. We briefly sketch the situation. During engine operation, each engine parameter1 is being

  8. Listening to talking faces: motor cortical activation during speech perception

    E-Print Network [OSTI]

    Coulson, Seana

    in planning and executing speech production and areas subserving proprioception related to speech production that regions traditionally considered to be responsible for motor planning and motor control play a role production and that these areas contribute less to speech perception when only auditory signals are present

  9. Quality electric motor repair: A guidebook for electric utilities

    SciTech Connect (OSTI)

    Schueler, V.; Douglass, J.

    1995-08-01T23:59:59.000Z

    This guidebook provides utilities with a resource for better understanding and developing their roles in relation to electric motor repair shops and the industrial and commercial utility customers that use them. The guidebook includes information and tools that utilities can use to raise the quality of electric motor repair practices in their service territories.

  10. Nonlinear Time Domain Modeling and Simulation of Surface and...

    Office of Environmental Management (EM)

    Nonlinear Time Domain Modeling and Simulation of Surface and Embedded NPPS Nonlinear Time Domain Modeling and Simulation of Surface and Embedded NPPS Nonlinear Time Domain Modeling...

  11. Elastomers in mud motors for oil field applications

    SciTech Connect (OSTI)

    Hendrik, J. [Baker Hughes INTEQ GmbH, Celle (Germany)

    1997-08-01T23:59:59.000Z

    Mud motors, the most frequently used downhole drilling motors in modern drilling systems, are described in their application and function. The elastomeric liner in a mud motor acts as a huge continuous seal. Important properties of elastomers such as chemical resistance, fatigue resistance, mechanical strength, abrasion resistance, bonding to steel and processability are discussed. Advantages and disadvantages of NBR, HNBR, FKM, TFEP, and EPDM elastomers for mud motor applications are briefly described. The importance of drilling fluids and their physical and chemical impact on motor elastomers are described. Drilling fluids are categorized in: oil based-, synthetic-, and water based. Results of compatibility tests in the different drilling muds of the presented categories demonstrate the complexity of elastomer development. Elastomers with an equally good performance in all drilling muds are not available. Future developments and improvements are directed towards higher chemical resistance at higher service temperatures. This will be possible only with improved elastomer-to-metal bonding, increased mechanical and better dynamic properties.

  12. Persistence of strain in motor-filament assemblies

    E-Print Network [OSTI]

    Arvind Gopinath; Raghunath Chelakkot; L. Mahadevan

    2015-01-12T23:59:59.000Z

    Crosslinked semi-flexible and flexible filaments that are actively deformed by molecular motors occur in various natural settings, such as the ordered eukaryotic flagellum, and the disordered cytoskeleton. The deformation of these composite systems is driven by active motor forces and resisted by passive filament elasticity, and structural constraints due to permanent cross-links. Using a mean field theory for a one-dimensional ordered system, we show that the combination of motor activity and finite filament extensibility yields a characteristic persistence length scale over which active strain decays. This decay length is set by the ability of motors to respond to combination of the weak extensional elasticity, passive shear resistance and the viscoelastic properties of the motor assembly, and generalizes the notion of persistence in purely thermal filaments to active systems.

  13. Stochastic modeling of cargo transport by teams of molecular motors

    E-Print Network [OSTI]

    Sarah Klein; Cťcile Appert-Rolland; Ludger Santen

    2014-07-16T23:59:59.000Z

    Many different types of cellular cargos are transported bidirectionally along microtubules by teams of molecular motors. The motion of this cargo-motors system has been experimentally characterized in vivo as processive with rather persistent directionality. Different theoretical approaches have been suggested in order to explore the origin of this kind of motion. An effective theoretical approach, introduced by M\\"uller et al., describes the cargo dynamics as a tug-of-war between different kinds of motors. An alternative approach has been suggested recently by Kunwar et al., who considered the coupling between motor and cargo in more detail. Based on this framework we introduce a model considering single motor positions which we propagate in continuous time. Furthermore, we analyze the possible influence of the discrete time update schemes used in previous publications on the system's dynamic.

  14. U.S. Department of Energy's Motor Challenge Program: A National...

    Broader source: Energy.gov (indexed) [DOE]

    industry needs, and market drivers associated with improving industrial electric motor-driven systems. The key strategies and tactics being employed by the DOE Motor...

  15. Scalable, Low-Cost, High Performance IPM Motor for Hybrid Vehicles...

    Broader source: Energy.gov (indexed) [DOE]

    More Documents & Publications Scalable, Low-Cost, High Performance IPM Motor for Hybrid Vehicles Scalable, Low-Cost, High Performance IPM Motor for Hybrid Vehicles Scalable,...

  16. Scalable, Low-Cost, High Performance IPM Motor for Hybrid Vehicles...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    More Documents & Publications Scalable, Low-Cost, High Performance IPM Motor for Hybrid Vehicles Scalable, Low-Cost, High Performance IPM Motor for Hybrid Vehicles...

  17. Word Domain Disambiguation via Word Sense Disambiguation

    SciTech Connect (OSTI)

    Sanfilippo, Antonio P.; Tratz, Stephen C.; Gregory, Michelle L.

    2006-06-04T23:59:59.000Z

    Word subject domains have been widely used to improve the perform-ance of word sense disambiguation al-gorithms. However, comparatively little effort has been devoted so far to the disambiguation of word subject do-mains. The few existing approaches have focused on the development of al-gorithms specific to word domain dis-ambiguation. In this paper we explore an alternative approach where word domain disambiguation is achieved via word sense disambiguation. Our study shows that this approach yields very strong results, suggesting that word domain disambiguation can be ad-dressed in terms of word sense disam-biguation with no need for special purpose algorithms.

  18. Advanced Ultra-High Speed Motor for Drilling

    SciTech Connect (OSTI)

    Impact Technologies LLC; University of Texas at Arlington

    2007-03-31T23:59:59.000Z

    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.

  19. Conversion of olefins to liquid motor fuels

    DOE Patents [OSTI]

    Rabo, Jule A. (Armonk, NY); Coughlin, Peter K. (Yorktown Heights, NY)

    1988-01-01T23:59:59.000Z

    Linear and/or branched claim C.sub.2 to C.sub.12 olefins are converted to hydrocarbon mixtures suitable for use as liquid motor fuels by contact with a catalyst capable of ensuring the production of desirable products with only a relatively minor amount of heavy products boiling beyond the diesel oil range. The catalyst having desirable stability during continuous production operations, comprises a steam stabilized zeolite Y catalyst of hydrophobic character, desirably in aluminum-extracted form. The olefins such as propylene, may be diluted with inerts, such as paraffins or with water, the latter serving to moderate the acidity of the catalyst, or to further moderate the activity of the aluminum-extracted catalyst, so as to increase the effective life of the catalyst.

  20. Powertrain System HANT: Hydraulic Pump/Motor

    SciTech Connect (OSTI)

    Not Available

    1993-06-01T23:59:59.000Z

    The development of the new Hydraulic Pump/Motor is the main part of the Powertrain-System HANT. Several Engineering Models of the same design have been tested to prove that the new concept is effective. The important ranges: Maximum pressure and rpm and low power (low pressure, rpm, swashplate angle) were tested successfully. The efficiencies in all areas have already shown the same or better data then those of the best products on the market. The tests have been conducted in Switzerland (maximum power) in 1987 and at the UWM-Madison, Wisconsin (low power efficiency) in 1988. Based on these data and several new useful design features the Engineering Model has been updated. In addition, the reduction of unnecessary safety factor, new materials and mass-production like manufacturing methods, has lead to an significantly improved Prototype Design. The updated version and its expected improved technical data are presented in this report.

  1. Steps in the bacterial flagellar motor

    E-Print Network [OSTI]

    Thierry Mora; Howard Yu; Yoshiyuki Sowa; Ned S. Wingreen

    2009-04-02T23:59:59.000Z

    The bacterial flagellar motor is a highly efficient rotary machine used by many bacteria to propel themselves. It has recently been shown that at low speeds its rotation proceeds in steps [Sowa et al. (2005) Nature 437, 916--919]. Here we propose a simple physical model that accounts for this stepping behavior as a random walk in a tilted corrugated potential that combines torque and contact forces. We argue that the absolute angular position of the rotor is crucial for understanding step properties, and show this hypothesis to be consistent with the available data, in particular the observation that backward steps are smaller on average than forward steps. Our model also predicts a sublinear torque-speed relationship at low torque, and a peak in rotor diffusion as a function of torque.

  2. Efficient Motor System Tools Sponsored by the DOE Motor Challenge Program

    E-Print Network [OSTI]

    Blazewicz, S.; McCoy, G. A.; Olszewski, M.; Scheihing, P.

    efficiency, purchase price, energy costs, hours of operation, load factor, and utility rebates are taken into account. -Utility rebate program data, which includes minimum qualifying efficiency and rebate dollar values. -Menus and extensive Help screens... in accordance with these two assumptions, the private sector will supply the delivery mechanisms for Motor Challenge tools because they will represent a value added to their existing commercial products. Industry and DOE Drivers Industry and DOE, in general...

  3. Instrument for analysis of electric motors based on slip-poles component

    DOE Patents [OSTI]

    Haynes, Howard D. (Knoxville, TN); Ayers, Curtis W. (Clinton, TN); Casada, Donald A. (Knoxville, TN)

    1996-01-01T23:59:59.000Z

    A new instrument for monitoring the condition and speed of an operating electric motor from a remote location. The slip-poles component is derived from a motor current signal. The magnitude of the slip-poles component provides the basis for a motor condition monitor, while the frequency of the slip-poles component provides the basis for a motor speed monitor. The result is a simple-to-understand motor health monitor in an easy-to-use package. Straightforward indications of motor speed, motor running current, motor condition (e.g., rotor bar condition) and synthesized motor sound (audible indication of motor condition) are provided. With the device, a relatively untrained worker can diagnose electric motors in the field without requiring the presence of a trained engineer or technician.

  4. Instrument for analysis of electric motors based on slip-poles component

    DOE Patents [OSTI]

    Haynes, H.D.; Ayers, C.W.; Casada, D.A.

    1996-11-26T23:59:59.000Z

    A new instrument is described for monitoring the condition and speed of an operating electric motor from a remote location. The slip-poles component is derived from a motor current signal. The magnitude of the slip-poles component provides the basis for a motor condition monitor, while the frequency of the slip-poles component provides the basis for a motor speed monitor. The result is a simple-to-understand motor health monitor in an easy-to-use package. Straightforward indications of motor speed, motor running current, motor condition (e.g., rotor bar condition) and synthesized motor sound (audible indication of motor condition) are provided. With the device, a relatively untrained worker can diagnose electric motors in the field without requiring the presence of a trained engineer or technician. 4 figs.

  5. Length control of microtubules by depolymerizing motor proteins

    E-Print Network [OSTI]

    Bindu S. Govindan; Manoj Gopalakrishnan; Debashish Chowdhury

    2008-07-08T23:59:59.000Z

    In many intracellular processes, the length distribution of microtubules is controlled by depolymerizing motor proteins. Experiments have shown that, following non-specific binding to the surface of a microtubule, depolymerizers are transported to the microtubule tip(s) by diffusion or directed walk and, then, depolymerize the microtubule from the tip(s) after accumulating there. We develop a quantitative model to study the depolymerizing action of such a generic motor protein, and its possible effects on the length distribution of microtubules. We show that, when the motor protein concentration in solution exceeds a critical value, a steady state is reached where the length distribution is, in general, non-monotonic with a single peak. However, for highly processive motors and large motor densities, this distribution effectively becomes an exponential decay. Our findings suggest that such motor proteins may be selectively used by the cell to ensure precise control of MT lengths. The model is also used to analyze experimental observations of motor-induced depolymerization.

  6. Collective transport of weakly interacting molecular motors with Langmuir kinetics

    E-Print Network [OSTI]

    Sameep Chandel; Abhishek Chaudhuri; Sudipto Muhuri

    2015-01-09T23:59:59.000Z

    Filament based intracellular transport involves the collective action of molecular motor proteins. Experimental evidences suggest that microtubule (MT) filament bound motor proteins such as {\\it kinesins} weakly interact among themselves during transport and with the surrounding cellular environment. Motivated by these observations we study a driven lattice gas model for collective unidirectional transport of molecular motors on open filament, which incorporates the short-range interactions between the motors on filaments and couples the transport process on filament with surrounding cellular environment through adsorption-desorption Langmuir (LK) kinetics of the motors. We analyse this model within the framework of a Mean Field (MF) theory in the limit of {\\it weak} interactions between the motors. We point to the mapping of this model with the non-conserved version of Katz-Lebowitz-Spohn (KLS) model. The system exhibits rich phase behavior with variety of inhomogeneous phases including localized shocks in the bulk of the filament. We obtain the steady state density and current profiles and analyse their variation as function of the strength of interaction. We compare these MF results with Monte Carlo simulations and find that the MF analysis shows reasonably good agreement as long as the motors are weakly interacting. We also construct the non-equilibrium MF phase diagram.

  7. Collective dynamics of molecular motors pulling on fluid membranes

    E-Print Network [OSTI]

    O. Campas; Y. Kafri; K. B. Zeldovich; J. Casademunt; J. -F. Joanny

    2005-12-08T23:59:59.000Z

    The collective dynamics of $N$ weakly coupled processive molecular motors are considered theoretically. We show, using a discrete lattice model, that the velocity-force curves strongly depend on the effective dynamic interactions between motors and differ significantly from a simple mean field prediction. They become essentially independent of $N$ if it is large enough. For strongly biased motors such as kinesin this occurs if $N\\gtrsim 5$. The study of a two-state model shows that the existence of internal states can induce effective interactions.

  8. Microwave lamp with multi-purpose rotary motor

    DOE Patents [OSTI]

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

    1999-01-01T23:59:59.000Z

    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.

  9. Single phase two pole/six pole motor

    DOE Patents [OSTI]

    Kirschbaum, Herbert S. (Asheville, NC)

    1984-01-01T23:59:59.000Z

    A single phase alternating current two pole/six pole motor is provided with a main stator winding having six coils disposed unequally around the periphery of the machine. These coils are divided into two groups. When these groups are connected such that their magnetomotive forces are additive, two pole motor operation results. When the polarity of one of the groups is then reversed, six pole motor operation results. An auxiliary stator winding which is similar to the main stator winding is displaced from the main stator winding by 90 electrical degrees on a two pole basis.

  10. Microwave lamp with multi-purpose rotary motor

    DOE Patents [OSTI]

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

    1999-02-02T23:59:59.000Z

    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.

  11. Single phase two pole/six pole motor

    DOE Patents [OSTI]

    Kirschbaum, H.S.

    1984-09-25T23:59:59.000Z

    A single phase alternating current two pole/six pole motor is provided with a main stator winding having six coils disposed unequally around the periphery of the machine. These coils are divided into two groups. When these groups are connected such that their magnetomotive forces are additive, two pole motor operation results. When the polarity of one of the groups is then reversed, six pole motor operation results. An auxiliary stator winding which is similar to the main stator winding is displaced from the main stator winding by 90 electrical degrees on a two pole basis. 12 figs.

  12. Unusual ASD Motor Conversions in a Carpet Yarn Plant

    E-Print Network [OSTI]

    Brown, M.; Meffert, W.

    2006-01-01T23:59:59.000Z

    . The results of the test are shown in Table 1 below. Table 1 Extruder Tests 165 kW Drive DC motor: Power Input AC motor: Power Input Power Savings AC/DC Power 126.9 kW 127.4 kW -0.4 kW 1.004 The results indicate that the variable speed AC.... To develop the required torque, the motor begins to draw increased current at lower speeds and the power input begins to increase. The VFD has an optimum speed for this application, and that was found to be approximately 56 Hertz. Reducing the speed...

  13. IEMDC -IN-LINE ELECTRIC MOTOR DRIVEN COMPRESSOR

    SciTech Connect (OSTI)

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

    2004-01-01T23:59:59.000Z

    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.

  14. Viruses 2011, 3, 1757-1776; doi:10.3390/v3091757 ISSN 1999-4915

    E-Print Network [OSTI]

    Levin, Judith G.

    and minus end motor proteins. Kinesins and dynein are microtubule motors that mediate long range outward myosin motor proteins moving on actin filaments [2]. For viruses that enter the cytoplasm through fusion-associated motor proteins can be used for active transport of the genome to the nucleus for replication [3

  15. Dissipation, noise and DCC domain formation

    E-Print Network [OSTI]

    A. K. Chaudhuri

    1999-08-17T23:59:59.000Z

    We investigate the effect of friction on domain formation in disoriented chiral condensate. We solve the equation of motion of the linear sigma model, in the Hartree approximation, including a friction and a white noise term. For quenched initial condition, we find that even in presence of noise and dissipation domain like structure emerges after a few fermi of evolution. Domain size as large as 5 fm can be formed.

  16. Design and rule base reduction of a fuzzy lter for the estimation of motor currents

    E-Print Network [OSTI]

    Simon, Dan

    The electrical windings of a permanent magnet synchronous motor are spaced on the stator (the ģxed part the current in the stator windings. Krause and Wasynczuk [1] provide a good overview of per- manent magnet ģltering to motor winding current estimation in permanent magnet synchronous motors. Motor winding current

  17. Permanent Magnet Motors for Energy Savings in Industrial Applications Copyright Material IEEE

    E-Print Network [OSTI]

    McCalley, James D.

    industry. Over the past 30 years, there have been clear trends in motor utilization that demand higher recognized as providing higher efficiency than induction motors, but limitations in terms of motor control. Section IIC covers some of the system implications of utilizing PM motors, including control strategies

  18. Collective motor dynamics in membrane transport in vitro Thesis summary by Paige M. Shaklee

    E-Print Network [OSTI]

    van den Brink, Jeroen

    Collective motor dynamics in membrane transport in vitro Thesis summary by Paige M. Shaklee Just. Inside the cell, nanometer-sized motor proteins act as the cargo trans- porters. Motors walk along their back. The intracellular high- ways that motors walk along are protein polymers called microtubules (MTs

  19. State Motor Pool Rental Contract for Business Travel Effective January 1, 2010

    E-Print Network [OSTI]

    Harms, Kyle E.

    State Motor Pool Rental Contract for Business Travel Effective January 1, 2010 Base Rental Charges Vehicle Class State Motor Pool Rental Contract Daily Rate* State Motor Pool Rental Contract Weekly Rate* State Motor Pool Rental Contract Monthly Rate* Compact 32 176 640 Mid-size/Intermediate 34 187 680

  20. Motor planning for vocal production in common marmosets Cory T. Miller*, Steven J. Eliades 1

    E-Print Network [OSTI]

    Wang, Xiaoqin

    Motor planning for vocal production in common marmosets Cory T. Miller*, Steven J. Eliades 1-00291 Keywords: Callithrix jacchus common marmoset primate vocal production vocal motor plan The vocal motor plan whether a single vocal motor plan comprises the full length of a vocalization. We hypothesized

  1. Behavioral/Systems/Cognitive Encoding of Movement Fragments in the Motor Cortex

    E-Print Network [OSTI]

    Amit, Yali

    Behavioral/Systems/Cognitive Encoding of Movement Fragments in the Motor Cortex Nicholas G be elicited by electrical stimulation of the motor cortex. Most recording studies in the motor cortex, however, position, or force. Here, we show that single motor cortical neurons encode temporally evolving movement

  2. Towards a Revised Motor Theory of L2 Speech Perception This study aims to review, through

    E-Print Network [OSTI]

    Towards a Revised Motor Theory of L2 Speech Perception Abstract This study aims to review, through put-to-sideways motor theory of speech perception. On one hand, previous studies in support to motor development observations. On the other hand, L2 learning studies had seldom followed the motor theory

  3. JN-00488-2005.R2 Running Head: SOMATOTOPY AND MOTOR IMAGERY

    E-Print Network [OSTI]

    Zacks, Jeffrey M.

    JN-00488-2005.R2 Running Head: SOMATOTOPY AND MOTOR IMAGERY Lateral somatotopic organization during-7588 #12;JN-00488-2005.R2 Somatotopy and motor imagery 2 Abstract Motor imagery is a complex cognitive of the physical movements being imagined. Likewise, motor preparation may or may not involve computations

  4. Localized domain patterns in complex polymers

    E-Print Network [OSTI]

    Localized domain patterns in complex polymers abstract. Block copolymers are macromolecules that can form variety of microstructures as a result of incomplete

  5. Petroleum Pipeline Eminent Domain Permit Procedures (Georgia)

    Broader source: Energy.gov [DOE]

    The Petroleum Pipeline Eminent Domain Permit Procedures serve to protect Georgia's natural and environmental resources by requiring permits be issued by the Director of the Environmental Protection...

  6. Hidden Rotational Symmetries in Magnetic Domain Patterns

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    California, San Diego, have recently used coherent soft x-ray scattering with angular Fourier analysis to discover that the disordered domain patterns do, in fact, exhibit...

  7. Visual Experience and Motor Action: Are The Bonds Too Tight?†

    E-Print Network [OSTI]

    Clark, Andy

    2001-01-01T23:59:59.000Z

    How should we characterize the functional role of conscious visual experience? In particular, how do the conscious contents of visual experience guide, bear upon, or otherwise inform our ongoing motor activities? According ...

  8. 3D-Printed Car by Local Motors- The Strati

    Broader source: Energy.gov [DOE]

    A timelapse video of the production process behind The Strati - the 3D-printed car by Local Motors, which manufactured with Oak Ridge National Laboratory (ORNL) and delivered at the International Manufacturing Technology Show (IMTS) in September of 2014.

  9. Economic Realities and Energy Efficient Polyphase Integral Horsepower Electric Motors

    E-Print Network [OSTI]

    Whittington, B. W.

    1980-01-01T23:59:59.000Z

    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...

  10. An economical single to three phase converter for induction motors

    E-Print Network [OSTI]

    Di Zerega, Philp Van Uytandaele

    1994-01-01T23:59:59.000Z

    There are several different types of single to three phase converters for induction motors available today. However, many of the presently available phase converters suffer from disadvantages such as high cost or low performance. An economical...

  11. How to Improve Productivity with Energy-Efficient Motors

    E-Print Network [OSTI]

    Curley, J. P.

    1983-01-01T23:59:59.000Z

    productivity is to reduce costs, particularly those which are rising faster than others such as electricity. Today's new energy efficient motors reduce the kilowatts consumed, thus reducing electric bills and improving productivity. This paper will discuss...

  12. Motor Effort Alters Changes of Mind in Sensorimotor Decision Making

    E-Print Network [OSTI]

    Franklin, David

    Howard Hughes Medical Institute, Janelia Farm Research Campus, Ashburn, Virginia, United States: Burk D, Ingram JN, Franklin DW, Shadlen MN, Wolpert DM (2014) Motor Effort Alters Changes of Mind

  13. Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type...

    Gasoline and Diesel Fuel Update (EIA)

    150.0 2,026.7 W W 234.5 161.7 - 396.3 See footnotes at end of table. 43. Refiner Motor Gasoline Volumes by Grade, Sales Type, PAD District, and State 262 Energy Information...

  14. Table 48. Prime Supplier Sales Volumes of Motor Gasoline by...

    U.S. Energy Information Administration (EIA) Indexed Site

    - - 466.1 466.1 See footnotes at end of table. 48. Prime Supplier Sales Volumes of Motor Gasoline by Grade, Formulation, PAD District, and State 356 Energy Information...

  15. MotorWeek H2 on the Horizon Video

    Broader source: Energy.gov [DOE]

    MotorWeek Host: Fuel cell electric cars, or FCEVs, provide drivers with the same benefits as current gasoline vehicles with a comparable driving range and refueling in just a few minutes. FCEVs don...

  16. Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type...

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    253.2 2,222.4 W W 206.4 134.3 - 340.7 See footnotes at end of table. 43. Refiner Motor Gasoline Volumes by Grade, Sales Type, PAD District, and State 262 Energy Information...

  17. Petroleum Products Table 43. Refiner Motor Gasoline Volumes...

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    150.0 2,026.7 W W 234.5 161.7 - 396.3 See footnotes at end of table. 43. Refiner Motor Gasoline Volumes by Grade, Sales Type, PAD District, and State 262 Energy Information...

  18. Petroleum Products Table 43. Refiner Motor Gasoline Volumes...

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    253.2 2,222.4 W W 206.4 134.3 - 340.7 See footnotes at end of table. 43. Refiner Motor Gasoline Volumes by Grade, Sales Type, PAD District, and State 262 Energy Information...

  19. Table 48. Prime Supplier Sales Volumes of Motor Gasoline by...

    U.S. Energy Information Administration (EIA) Indexed Site

    - - 532.1 532.1 See footnotes at end of table. 48. Prime Supplier Sales Volumes of Motor Gasoline by Grade, Formulation, PAD District, and State 356 Energy Information...

  20. 38017,"AMERADA HESS CORP ",1,130,"MOTOR...

    U.S. Energy Information Administration (EIA) Indexed Site

    017,"AMERADA HESS CORP ",1,130,"MOTOR GAS, CONVENTIONAL, OTHER",1803,"JACKSONVILLE, FL","FLORIDA",1,078,"VIRGIN ISLANDS, U.S.",23,0,0,,,,, 38017,"AMERADA HESS CORP...

  1. Inventing a Novel Sensor for Online Motor Monitoring | GE Global...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Inventing a Novel Sensor for Online Motor Monitoring Click to email this to a friend (Opens in new window) Share on Facebook (Opens in new window) Click to share (Opens in new...

  2. Inter-fingercoordinated DC motor driven grasping robotic hand

    E-Print Network [OSTI]

    Wikman, Sarah Jane

    2009-01-01T23:59:59.000Z

    Many robotic hands have individually driven joints, which is both energy inefficient and complicated to control. An alternative method includes employing only one motor to control multiple joints. Investigating humanoid ...

  3. berkeleyengineering First-generation airbags, installed in motor

    E-Print Network [OSTI]

    Agogino, Alice M.

    berkeleyengineering 8 9 First-generation airbags, installed in motor vehicles until 1998, decreased Berkeley ME professor Alice Agogino, is because women were not involved in early research, in which airbags

  4. alters motor behavior: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    A ribosome can be regarded as a molecular motor which utilizes the input chemical energy to move on a messenger RNA (mRNA) track that also serves as a template for the...

  5. Variable Frequency Motor Drives: Harmonics, Power Factor, and Energy Efficiency

    E-Print Network [OSTI]

    Massey, G. W.

    Variable frequency motor drives (VFD's) have been on the market for many years. Early versions were unreliable and prone to failure. Relatively recent developments in Pulse-Width Modulated (PWM) waveform technology have improved VFD reliability...

  6. Ameren Illinois (Electric)- Custom, HVAC, and Motor Business Efficiency Incentives

    Broader source: Energy.gov [DOE]

    Prescriptive rebates are available for many HVAC and motor efficiency improvements. Pre-approval is required for all rebates. The programs are available only to non-residential customers that...

  7. The impact of haptic guidance on musical motor learning

    E-Print Network [OSTI]

    Grindlay, Graham Charles

    2007-01-01T23:59:59.000Z

    Skilled musical performance provides one of the best demonstrations of the upper limits of the human motor system's capabilities. It is therefore not surprising that learning to play an instrument is a long and difficult ...

  8. A high-speed hysteresis motor spindle for machining applications

    E-Print Network [OSTI]

    Bayless, Jacob D. (Jacob Daniel)

    2014-01-01T23:59:59.000Z

    An analysis of suitable drive technologies for use in a new high-speed machining spindle was performed to determine critical research areas. The focus is on a hysteresis motor topology using a solid, inherently-balanced ...

  9. A New Class of Switched Reluctance Motors without Permanent Magnets

    Broader source: Energy.gov (indexed) [DOE]

    kW (2020 target) * Total project funding - DOE: 100% * Funding Received in FY09: 569K * Funding Received for FY10: 447K * University of Tennessee * MotorSolver LLC Timeline...

  10. Development of a high power density motor for aircraft propulsion

    E-Print Network [OSTI]

    Dibua, Imoukhuede Tim Odion

    2007-04-25T23:59:59.000Z

    are currently powered by heavy gas turbine engines that require fueling. The development of electric motors to replace gas turbines would be a big step towards accomplishing more efficient aircraft propulsion. The primary objective of this research extends...

  11. Obstacles and Opportunity: Turbine Motorization in Refineries Today

    E-Print Network [OSTI]

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

    2012-01-01T23:59:59.000Z

    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...

  12. Ignition Performance of New and Used Motor Vehicle Upholstery Fabrics†

    E-Print Network [OSTI]

    Spearpoint, Michael; Olenick, Stephen M; Torero, Jose L; Steinhaus, Thomas

    2005-01-01T23:59:59.000Z

    This paper examines the standards for fire safety in transport systems and in particular the test method for the flammability of materials within passenger compartments of motor vehicles. The paper compares data from ...

  13. High Efficiency Fans and High Efficiency Electrical Motors

    E-Print Network [OSTI]

    Breedlove, C. W.

    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...

  14. An economical single to three phase converter for induction motors

    E-Print Network [OSTI]

    Di Zerega, Philp Van Uytandaele

    1994-01-01T23:59:59.000Z

    There are several different types of single to three phase converters for induction motors available today. However, many of the presently available phase converters suffer from disadvantages such as high cost or low performance. An economical...

  15. Obstacles and Opportunity: Turbine Motorization in Refineries Today†

    E-Print Network [OSTI]

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

    2012-01-01T23:59:59.000Z

    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...

  16. System Cost Analysis for an Interior Permanent Magnet Motor

    SciTech Connect (OSTI)

    Peter Campbell

    2008-08-01T23:59:59.000Z

    The objective of this program is to provide an assessment of the cost structure for an interior permanent magnet ('IPM') motor which is designed to meet the 2010 FreedomCAR specification. The program is to evaluate the range of viable permanent magnet materials for an IPM motor, including sintered and bonded grades of rare earth magnets. The study considers the benefits of key processing steps, alternative magnet shapes and their assembly methods into the rotor (including magnetization), and any mechanical stress or temperature limits. The motor's costs are estimated for an annual production quantity of 200,000 units, and are broken out into such major components as magnetic raw materials, processing and manufacturing. But this is essentially a feasibility study of the motor's electromagnetic design, and is not intended to include mechanical or thermal studies as would be done to work up a selected design for production.

  17. Advanced Power Electronics and Electric Motors Annual Report -- 2013

    SciTech Connect (OSTI)

    Narumanchi, S.; Bennion, K.; DeVoto, D.; Moreno, G.; Rugh, J.; Waye, S.

    2015-01-01T23:59:59.000Z

    This report describes the research into advanced liquid cooling, integrated power module cooling, high temperature air cooled power electronics, two-phase cooling for power electronics, and electric motor thermal management by NREL's Power Electronics group in FY13.

  18. Symmetry Relations for Trajectories of a Brownian Motor

    E-Print Network [OSTI]

    R. Dean Astumian

    2007-05-15T23:59:59.000Z

    A Brownian Motor is a nanoscale or molecular device that combines the effects of thermal noise, spatial or temporal asymmetry, and directionless input energy to drive directed motion. Because of the input energy, Brownian motors function away from thermodynamic equilibrium and concepts such as linear response theory, fluctuation dissipation relations, and detailed balance do not apply. The {\\em generalized} fluctuation-dissipation relation, however, states that even under strongly thermodynamically non-equilibrium conditions the ratio of the probability of a transition to the probability of the time-reverse of that transition is the exponent of the change in the internal energy of the system due to the transition. Here, we derive an extension of the generalized fluctuation dissipation theorem for a Brownian motor for the ratio between the probability for the motor to take a forward step and the probability to take a backward step.

  19. Nature of language impairment in motor neurone disease†

    E-Print Network [OSTI]

    Rewaj, Phillipa Jane

    2014-07-01T23:59:59.000Z

    Background: Language impairment associated with Motor Neurone Disease (MND) has been documented since the late 19th century, yet little is understood about the pervasiveness or nature of these deficits. The common clinical ...

  20. Neuromechanics: an integrative approach for understanding motor control

    E-Print Network [OSTI]

    Daniel, Tom

    Neuromechanics: an integrative approach for understanding motor control Kiisa Nishikawa,1,√ Andrew of Biology, University of North Carolina, Wilmington, NC 28409, USA Synopsis Neuromechanics seeks of neuromechanics include ameliorating human health problems (including prosthesis design and restoration

  1. Restructuring: The Changing Face of Motor Gasoline Marketing

    Reports and Publications (EIA)

    2001-01-01T23:59:59.000Z

    This report reviews the U.S. motor gasoline marketing industry during the period 1990 to 1999, focusing on changes that occurred during the period. The report incorporates financial and operating data from the Energy Information Administration's Financial Reporting System (FRS), motor gasoline outlet counts collected by the National Petroleum News from the states, and U.S. Census Bureau salary and employment data published in County Business Patterns.

  2. Motorized manipulator for positioning a TEM specimen

    DOE Patents [OSTI]

    Schmid, Andreas Karl (Berkeley, CA); Andresen, Nord (Berkeley, CA)

    2010-12-14T23:59:59.000Z

    The invention relates to a motorized manipulator for positioning a TEM specimen holder with sub-micron resolution parallel to a y-z plane and rotating the specimen holder in the y-z plane, the manipulator comprising a base (2), and attachment means (30) for attaching the specimen holder to the manipulator, characterized in that the manipulator further comprises at least three nano-actuators (3.sup.a, 3.sup.b, 3.sup.c) mounted on the base, each nano-actuator showing a tip (4.sup.a, 4.sup.b, 4.sup.c), the at least three tips defining the y-z plane, each tip capable of moving with respect to the base in the y-z plane; a platform (5) in contact with the tips of the nano-actuators; and clamping means (6) for pressing the platform against the tips of the nano-actuators; as a result of which the nano-actuators can rotate the platform with respect to the base in the y-z plane and translate the platform parallel to the y-z plane.

  3. Motor Systems Assessment Training, Including Use of the Motor Systems Tool Suite

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the.pdfBreaking ofOil &315_ArnibanPriorityof EnergyDepartmentRepair Tech BriefMotor

  4. System and method to determine electric motor efficiency using an equivalent circuit

    DOE Patents [OSTI]

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

    2011-06-07T23:59:59.000Z

    A system and method for determining electric motor efficiency includes a monitoring system having a processor programmed to determine efficiency of an electric motor under load while the electric motor is online. The determination of motor efficiency is independent of a rotor speed measurement. Further, the efficiency is based on a determination of stator winding resistance, an input voltage, and an input current. The determination of the stator winding resistance occurs while the electric motor under load is online.

  5. An Element of Determinism in a Stochastic Flagellar Motor Switch

    E-Print Network [OSTI]

    Xie, Li; Wu, Xiao-Lun

    2015-01-01T23:59:59.000Z

    Marine bacterium Vibrio alginolyticus uses a single polar flagellum to navigate in an aqueous environment. Similar to Escherichia coli cells, the polar flagellar motor has two states; when the motor is counter-clockwise, the cell swims forward and when the motor is clockwise, the cell swims backward. V. alginolyticus also incorporates a direction randomization step at the start of the forward swimming interval by flicking its flagellum. To gain an understanding on how the polar flagellar motor switch is regulated, distributions of the forward $\\Delta_{f}$ and backward $\\Delta_{b}$ intervals are investigated herein. We found that the steady-state probability density functions, $P(\\Delta_{f})$ and $P(\\Delta_{b})$, of freely swimming bacteria are strongly peaked at a finite time, suggesting that the motor switch is not Poissonian. The short-time inhibition is sufficiently strong and long lasting, i.e., several hundred milliseconds for both intervals, which is readily observed and characterized. Treating motor re...

  6. Model Studies of the Dynamics of Bacterial Flagellar Motors

    SciTech Connect (OSTI)

    Bai, F; Lo, C; Berry, R; Xing, J

    2009-03-19T23:59:59.000Z

    The Bacterial Flagellar Motor is a rotary molecular machine that rotates the helical filaments which propel swimming bacteria. Extensive experimental and theoretical studies exist on the structure, assembly, energy input, power generation and switching mechanism of the motor. In our previous paper, we explained the general physics underneath the observed torque-speed curves with a simple two-state Fokker-Planck model. Here we further analyze this model. In this paper we show (1) the model predicts that the two components of the ion motive force can affect the motor dynamics differently, in agreement with the latest experiment by Lo et al.; (2) with explicit consideration of the stator spring, the model also explains the lack of dependence of the zero-load speed on stator number in the proton motor, recently observed by Yuan and Berg; (3) the model reproduces the stepping behavior of the motor even with the existence of the stator springs and predicts the dwelling time distribution. Predicted stepping behavior of motors with two stators is discussed, and we suggest future experimental verification.

  7. Persistence of activity in noisy motor-filament assemblies

    E-Print Network [OSTI]

    Raghunath Chelakkot; Arvind Gopinath; L. Mahadevan

    2015-01-12T23:59:59.000Z

    Long, elastic filaments cross-linked and deformed by active molecular motors occur in various natural settings. The overall macroscopic mechanical response of such a composite network depends on the coupling between the active and the passive properties of the underlying constituents and nonlocal interactions between different parts of the composite. In a simple one dimensional system, using a mean field model, it has been shown that the combination of motor activity and finite filament extensibility yields a persistence length scale over which strain decays. Here we study a similar system, in the complementary limit of strong noise and moderate extensibility, using Brownian multi-particle collision dynamics-based numerical simulations that includes the coupling between motor kinetics and local filament extensibility. While the numerical model shows deviations from the mean field predictions due to the presence of strong active noise caused by the variations in individual motor activity, several qualitative features are still retained. Specifically, for fixed motor attachment and detachment rates, the decay is length is set by the ratio of the passive elasticity to the active shear resistance generated by attached motors. Our study generalizes the notion of persistence in passive thermal systems to actively driven systems with testable predictions.

  8. Electric motor systems in developing countries: Opportunities for efficiency improvement

    SciTech Connect (OSTI)

    Meyers, S.; Monahan, P.; Lewis, P.; Greenberg, S. [Lawrence Berkeley Lab., CA (United States); Nadel, S. [American Council for an Energy-Efficient Economy, Washington, DC (United States)

    1993-08-01T23:59:59.000Z

    This report presents an overview of the current status and efficiency improvement potential of industrial motor systems in developing countries. Better management of electric motor systems is of particular relevance in developing countries, where improved efficiency can lead to increased productivity and slower growth in electricity demand. Motor systems currently consume some 65--80% of the industrial electricity in developing countries. Drawing on studies from Thailand, India, Brazil, China, Pakistan, and Costa Rica, we describe potential efficiency gains in various parts of the motor system, from the electricity delivery system through the motor to the point where useful work is performed. We report evidence of a significant electricity conservation potential. Most of the efficiency improvement methods we examine are very cost-effective from a societal viewpoint, but are generally not implemented due to various barriers that deter their adoption. Drawing on experiences in North America, we discuss a range of policies to overcome these barriers, including education, training, minimum efficiency standards, motor efficiency testing protocols, technical assistance programs, and financial incentives.

  9. DefectDomain Wall Interactions in Trigonal

    E-Print Network [OSTI]

    Gopalan, Venkatraman

    Defect≠Domain Wall Interactions in Trigonal Ferroelectrics Venkatraman Gopalan,1 Volkmar Dierolf,2 walls in the trigonal ferroelectrics lithium niobate and lithium tantalate. It is shown that extrinsic questions re- garding intrinsic widths, defect≠domain wall interactions, and static versus dynamic wall

  10. A Theoretical Framework for Chimera Domain Decomposition

    E-Print Network [OSTI]

    Keeling, Stephen L.

    A Theoretical Framework for Chimera Domain Decomposition S. L. Keeling Sverdrup Technology, Inc. Steger, UC Davis, May 2-4, 1997. 1 Introduction. The Chimera scheme is a domain decomposition method- ometry is divided into simply shaped regions. Unlike other approaches [5], the Chimera method simplifies

  11. Reasoning with Concrete Domains Carsten Lutz

    E-Print Network [OSTI]

    Lutz, Carsten

    Reasoning with Concrete Domains Carsten Lutz RWTH Aachen, LuFg Theoretical Computer Science. Concrete domains allow the integration of description logic reasoning with reasoning about concrete objects for building real­world applications, is widely accepted. How­ ever, the complexity of reasoning with concrete

  12. Optical coherence domain reflectometry guidewire

    DOE Patents [OSTI]

    Colston, Billy W. (Livermore, CA); Everett, Matthew (Pleasanton, CA); Da Silva, Luiz B. (Danville, CA); Matthews, Dennis (Moss Beach, CA)

    2001-01-01T23:59:59.000Z

    A guidewire with optical sensing capabilities is based on a multiplexed optical coherence domain reflectometer (OCDR), which allows it to sense location, thickness, and structure of the arterial walls or other intra-cavity regions as it travels through the body during minimally invasive medical procedures. This information will be used both to direct the guidewire through the body by detecting vascular junctions and to evaluate the nearby tissue. The guidewire contains multiple optical fibers which couple light from the proximal to distal end. Light from the fibers at the distal end of the guidewire is directed onto interior cavity walls via small diameter optics such as gradient index lenses and mirrored corner cubes. Both forward viewing and side viewing fibers can be included. The light reflected or scattered from the cavity walls is then collected by the fibers, which are multiplexed at the proximal end to the sample arm of an optical low coherence reflectometer. The guidewire can also be used in nonmedical applications.

  13. Decay of motor memories in the absence of error Pavan A. Vaswani1 and Reza Shadmehr2

    E-Print Network [OSTI]

    Shadmehr, Reza

    1 Decay of motor memories in the absence of error Pavan A. Vaswani1 and Reza Shadmehr2 1. Department of Neuroscience, 2. Department of Biomedical Engineering Laboratory for Computational Motor@jhmi.edu Running title: Decay of motor memories Keywords: motor control, motor learning, decay, error

  14. IEMDC IN-LINE ELECTRIC MOTOR DRIVEN COMPRESSOR

    SciTech Connect (OSTI)

    Michael J. Crowley; Prem N. Bansal

    2004-10-01T23:59:59.000Z

    This report contains the final project summary and deliverables required by the award for the development of an In-line Electric Motor Driven Compressor (IEMDC). Extensive work was undertaken during the course of the project to develop the motor and the compressor section of the IEMDC unit. Multiple design iterations were performed to design an electric motor for operation in a natural gas environment and to successfully integrate the motor with a compressor. During the project execution, many challenges were successfully overcome in order to achieve the project goals and to maintain the system design integrity. Some of the challenges included limiting the magnitude of the compressor aerodynamic loading for appropriate sizing of the magnetic bearings, achieving a compact motor rotor size to meet the rotor dynamic requirements of API standards, devising a motor cooling scheme using high pressure natural gas, minimizing the impact of cooling on system efficiency, and balancing the system thrust loads for the magnetic thrust bearing. Design methods that were used on the project included validated state-of-the-art techniques such as finite element analysis and computational fluid dynamics along with the combined expertise of both Curtiss-Wright Electro-Mechanical Corporation and Dresser-Rand Company. One of the most significant areas of work undertaken on the project was the development of the unit configuration for the system. Determining the configuration of the unit was a significant step in achieving integration of the electric motor into a totally enclosed compression system. Product review of the IEMDC unit configuration was performed during the course of the development process; this led to an alternate design configuration. The alternate configuration is a modular design with the electric motor and compressor section each being primarily contained in its own pressure containing case. This new concept resolved the previous conflict between the aerodynamic flow passage requirements and electric motor requirements for support and utilities by bounding the flowpath within the compressor section. However most importantly, the benefits delivered by the new design remained the same as those proposed by the goals of the project. In addition, this alternate configuration resulted in the achievement of a few additional advantages over the original concept such as easier maintenance, operation, and installation. Interaction and feedback solicited from target clients regarding the unit configuration supports the fact that the design addresses industry issues regarding accessibility, maintainability, preferred operating practice, and increased reliability.

  15. Electric Motor Thermal Management R&D (Presentation)

    SciTech Connect (OSTI)

    Bennion, K.

    2014-11-01T23:59:59.000Z

    Thermal constraints place significant limitations on how electric motors ultimately perform. Without the ability to remove heat, the motor cannot operate without sacrificing performance, efficiency, and reliability. Finite element analysis and computational fluid dynamics modeling approaches are being increasingly utilized in the design and analysis of electric motors. As the models become more sophisticated, it is important to have detailed and accurate knowledge of both the passive thermal performance and the active cooling performance. In this work, we provide an overview of research characterizing both passive and active thermal elements related to electric motor thermal management. To better characterize the passive thermal performance, the effective thermal properties and inter-lamination thermal contact resistances were measured for different stator lamination materials. The active cooling performance of automatic transmission fluid (ATF) jets was also measured to better understand the heat transfer coefficients of ATF impinging on motor copper windings. Ford's Mercon LV was the ATF evaluated in this study. The presentation provides an overview of prior work with a focus on describing future plans for research to be performed during FY15.

  16. Localized Domains of Disoriented Chiral Condensates

    E-Print Network [OSTI]

    B. K. Nandi; T. K. Nayak; B. Mohanty; D. P. Mahapatra; Y. P. Viyogi

    1999-03-12T23:59:59.000Z

    A new method to search for localized domains of disoriented chiral condensates (DCC) has been proposed by utilising the (eta-phi) phase space distributions of charged particles and photons. Using the discrete wavelet transformation (DWT) analysis technique, it has been found that the presence of DCC domains broadens the distribution of wavelet coefficients in comparison to that of normal events. Strength contours have been derived from the differences in rms deviations of these distributions by taking into account the size of DCC domains and the probability of DCC production in ultra-relativistic heavy ion collisions. This technique can be suitably adopted to experiments measuring multiplicities of charged particles and photons.

  17. Domain wall cosmology and multiple accelerations

    SciTech Connect (OSTI)

    Lee, Bum-Hoon [CQUeST, Sogang University, Seoul, Korea 121-742 (Korea, Republic of); Department of Physics, Sogang University, Seoul, 121-742 (Korea, Republic of); Lee, Wonwoo; Nam, Siyoung; Park, Chanyong [CQUeST, Sogang University, Seoul, 121-742 (Korea, Republic of)

    2007-05-15T23:59:59.000Z

    We classify the cosmological behaviors of the domain wall under junctions between two spacetimes in terms of various parameters: cosmological constants of bulk spacetime, a tension of a domain wall, and mass parameters of the black-hole-type metric. Especially, we consider the false-true vacuum-type junctions and the domain wall connecting between an inner AdS space and an outer AdS Reissner-Nordstroem black hole. We find that there exists a solution to the junction equations with multiple accelerations.

  18. Universal adaptive torque control for PM motors for field-weakening region operation

    DOE Patents [OSTI]

    Royak, Semyon (Beachwood, OH); Harbaugh, Mark M. (Richfield, OH); Breitzmann, Robert J. (South Russel, OH); Nondahl, Thomas A. (Wauwatosa, WI); Schmidt, Peter B. (Franklin, WI); Liu, Jingbo (Milwaukee, WI)

    2011-03-29T23:59:59.000Z

    The invention includes a motor controller and method for controlling a permanent magnet motor. In accordance with one aspect of the present technique, a permanent magnet motor is controlled by, among other things, receiving a torque command, determining a normalized torque command by normalizing the torque command to a characteristic current of the motor, determining a normalized maximum available voltage, determining an inductance ratio of the motor, and determining a direct-axis current based upon the normalized torque command, the normalized maximum available voltage, and the inductance ratio of the motor.

  19. Counter-Rotating Tandem Motor Drilling System

    SciTech Connect (OSTI)

    Kent Perry

    2009-04-30T23:59:59.000Z

    Gas Technology Institute (GTI), in partnership with Dennis Tool Company (DTC), has worked to develop an advanced drill bit system to be used with microhole drilling assemblies. One of the main objectives of this project was to utilize new and existing coiled tubing and slimhole drilling technologies to develop Microhole Technology (MHT) so as to make significant reductions in the cost of E&P down to 5000 feet in wellbores as small as 3.5 inches in diameter. This new technology was developed to work toward the DOE's goal of enabling domestic shallow oil and gas wells to be drilled inexpensively compared to wells drilled utilizing conventional drilling practices. Overall drilling costs can be lowered by drilling a well as quickly as possible. For this reason, a high drilling rate of penetration is always desired. In general, high drilling rates of penetration (ROP) can be achieved by increasing the weight on bit and increasing the rotary speed of the bit. As the weight on bit is increased, the cutting inserts penetrate deeper into the rock, resulting in a deeper depth of cut. As the depth of cut increases, the amount of torque required to turn the bit also increases. The Counter-Rotating Tandem Motor Drilling System (CRTMDS) was planned to achieve high rate of penetration (ROP) resulting in the reduction of the drilling cost. The system includes two counter-rotating cutter systems to reduce or eliminate the reactive torque the drillpipe or coiled tubing must resist. This would allow the application of maximum weight-on-bit and rotational velocities that a coiled tubing drilling unit is capable of delivering. Several variations of the CRTDMS were designed, manufactured and tested. The original tests failed leading to design modifications. Two versions of the modified system were tested and showed that the concept is both positive and practical; however, the tests showed that for the system to be robust and durable, borehole diameter should be substantially larger than that of slim holes. As a result, the research team decided to complete the project, document the tested designs and seek further support for the concept outside of the DOE.

  20. Human-computer interface incorporating personal and application domains

    DOE Patents [OSTI]

    Anderson, Thomas G. (Albuquerque, NM)

    2011-03-29T23:59:59.000Z

    The present invention provides a human-computer interface. The interface includes provision of an application domain, for example corresponding to a three-dimensional application. The user is allowed to navigate and interact with the application domain. The interface also includes a personal domain, offering the user controls and interaction distinct from the application domain. The separation into two domains allows the most suitable interface methods in each: for example, three-dimensional navigation in the application domain, and two- or three-dimensional controls in the personal domain. Transitions between the application domain and the personal domain are under control of the user, and the transition method is substantially independent of the navigation in the application domain. For example, the user can fly through a three-dimensional application domain, and always move to the personal domain by moving a cursor near one extreme of the display.

  1. Learning Energy Demand Domain Knowledge via Feature Transformation

    E-Print Network [OSTI]

    Povinelli, Richard J.

    Learning Energy Demand Domain Knowledge via Feature Transformation Sanzad Siddique Department -- Domain knowledge is an essential factor for forecasting energy demand. This paper introduces a method knowledge substantially improves energy demand forecasting accuracy. However, domain knowledge may differ

  2. Structural and Functional Characterization of DUF1471 Domains...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    subfamilies: SrfN, YahO, and SssBYdgH (two of its three DUF1471 domains: the N-terminal domain I (residues 21Ė91), and the C-terminal domain III (residues...

  3. Multiscale polar theory of microtubule and motor-protein assemblies

    E-Print Network [OSTI]

    Tong Gao; Robert Blackwell; Matthew A. Glaser; M. D. Betterton; Michael J. Shelley

    2015-01-27T23:59:59.000Z

    Microtubules and motor proteins are building blocks of self-organized subcellular biological structures such as the mitotic spindle and the centrosomal microtubule array. These same ingredients can form new "bioactive" liquid-crystalline fluids that are intrinsically out of equilibrium and which display complex flows and defect dynamics. It is not yet well understood how microscopic activity, which involves polarity-dependent interactions between motor proteins and microtubules, yields such larger scale dynamical structures. In our multiscale theory, Brownian dynamics simulations of polar microtubule ensembles driven by crosslinking motors allow us to study microscopic organization and stresses. Polarity sorting and crosslink relaxation emerge as two polar-specific sources of active destabilizing stress. On larger length scales, our continuum Doi-Onsager theory captures the hydrodynamic flows generated by polarity-dependent active stresses. The results connect local polar structure to flow structures and defect dynamics.

  4. System and method to determine electric motor efficiency nonintrusively

    DOE Patents [OSTI]

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

    2011-08-30T23:59:59.000Z

    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.

  5. Electric Motor Thermal Management for Electric Traction Drives (Presentation)

    SciTech Connect (OSTI)

    Bennion, K.; Cousineau, J.; Moreno, G.

    2014-09-01T23:59:59.000Z

    Thermal constraints place significant limitations on how electric motors ultimately perform. Finite element analysis and computational fluid dynamics modeling approaches are being increasingly utilized in the design and analysis of electric motors. As the models become more sophisticated, it is important to have detailed and accurate knowledge of material thermal properties and convective heat transfer coefficients. In this work, the thermal properties and inter-lamination thermal contact resistances were measured for different stator lamination materials. Also, convective heat transfer coefficients of automatic transmission fluid (ATF) jets were measured to better understand the heat transfer of ATF impinging on motor copper windings. Experiments were carried out at various ATF temperatures and jet velocities to quantify the influence of these parameters on heat transfer coefficients.

  6. Asymptotically radial solutions in expanding annular domains

    E-Print Network [OSTI]

    Clapp, Můnica

    Asymptotically radial solutions in expanding annular domains Thomas Bartsch Mīonica Clapp Massimo- mail: Thomas.Bartsch@math.uni-giessen.de Instituto de Matemīaticas, Universidad Nacional Autīonoma de M

  7. Slow Dynamics of Orbital Domains in Manganite

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Slow Dynamics of Orbital Domains in Manganite Print At the ALS, an international team of researchers has used low-energy coherent x rays to extract new knowledge about the...

  8. Wavelet Domain Based Techniques for Video Coding

    E-Print Network [OSTI]

    Kutil, Rade

    Wavelet Domain Based Techniques for Video Coding Dissertation zur Erlangung des Doktorgrades an der . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 2.4.3 Error Resilience . . . . . . . . . . . . . . . . . . . . . . . . 17 3 Wavelet Transform 18 3.1 Wavelet Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 3.1.1 Fourier Transform (FT

  9. Casimir forces in the time domain: Applications

    E-Print Network [OSTI]

    Johnson, Steven G.

    Our previous article [Phys. Rev. A 80, 012115 (2009)] introduced a method to compute Casimir forces in arbitrary geometries and for arbitrary materials that was based on a finite-difference time-domain (FDTD) scheme. In ...

  10. Cargo transportation by two species of motor protein

    E-Print Network [OSTI]

    Yunxin Zhang

    2012-11-06T23:59:59.000Z

    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.

  11. Impacts of Motor Vehicle Operation on Water Quality in the United States - Clean-up Costs and Policies

    E-Print Network [OSTI]

    Nixon, Hilary; Saphores, Jean-Daniel

    2007-01-01T23:59:59.000Z

    Environmental externalities of motor-vehicle use in the US.Gasoline Cd Co Cr Cu Fe Mn Ni Motor Oil & Grease Antifreezecan often be traced to motor vehicle sources. According to

  12. Building Noetherian and non-Noetherian integral domains using ...

    E-Print Network [OSTI]

    2013-06-30T23:59:59.000Z

    valuation domain birationally dominating R, .... discrete valuation domain (DVR) and it is well-known that the completion of R .... two methods for the construction.

  13. Structured hints : extracting and abstracting domain expertise.

    SciTech Connect (OSTI)

    Hereld, M.; Stevens, R.; Sterling, T.; Gao, G. R.; Mathematics and Computer Science; California Inst. of Tech.; Louisiana State Univ.; Univ. of Delaware

    2009-03-16T23:59:59.000Z

    We propose a new framework for providing information to help optimize domain-specific application codes. Its design addresses problems that derive from the widening gap between the domain problem statement by domain experts and the architectural details of new and future high-end computing systems. The design is particularly well suited to program execution models that incorporate dynamic adaptive methodologies for live tuning of program performance and resource utilization. This new framework, which we call 'structured hints', couples a vocabulary of annotations to a suite of performance metrics. The immediate target is development of a process by which a domain expert describes characteristics of objects and methods in the application code that would not be readily apparent to the compiler; the domain expert provides further information about what quantities might provide the best indications of desirable effect; and the interactive preprocessor identifies potential opportunities for the domain expert to evaluate. Our development of these ideas is progressing in stages from case study, through manual implementation, to automatic or semi-automatic implementation. In this paper we discuss results from our case study, an examination of a large simulation of a neural network modeled after the neocortex.

  14. Magnetic levitation configuration incorporating levitation, guidance and linear synchronous motor

    DOE Patents [OSTI]

    Coffey, H.T.

    1993-10-19T23:59:59.000Z

    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.

  15. Motor-output variability in a ballistic task

    E-Print Network [OSTI]

    Weeks, Douglas Lane

    1981-01-01T23:59:59.000Z

    MOTOR-OUTPUT VARIABILIT'f IN A BALLISTIC TASK A Thesis by DOUGLAS LANE WEEKS Submitted to the Graduate College of Texas ASM University in partsal fulfillment of the requirement for the degree of MASTER OF SCIENCE August 1981 Major Subject...: Physical Education MOTOR-OUTPUT VARIABILITY IN A BALLISTIC TASK A Thesis by DOUGLAS LANE WEEKS Approved as to style and content by: Chairman of Committee , ember C ee. yc ace Member )g p~ Head of Department August 1981 ADS!RACT !Notor...

  16. Self contained, independent, in-vacuum spinner motor

    DOE Patents [OSTI]

    Ayers, Marion J. (Livermore, CA)

    2002-01-01T23:59:59.000Z

    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.

  17. Magnetic levitation configuration incorporating levitation, guidance and linear synchronous motor

    DOE Patents [OSTI]

    Coffey, Howard T. (Darien, IL)

    1993-01-01T23:59:59.000Z

    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.

  18. Electrical motor/generator drive apparatus and method

    DOE Patents [OSTI]

    Su, Gui Jia

    2013-02-12T23:59:59.000Z

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

  19. Achieving A Long Term Business Impact by Improving the Energy Effectiveness and Reliability of Electric Motors

    E-Print Network [OSTI]

    Whelan, C. D.

    Over 100,000 electric motors drive the production equipment throughout a large chemical company. The energy-efficiency and reliability of these motors during their entire life have a decided impact on the company's manufacturing costs and production...

  20. Local Motors Begins Their Six Day Quest to 3D Print the 'Strati...

    Broader source: Energy.gov (indexed) [DOE]

    Local Motors Begins Their Six Day Quest to 3D Print the 'Strati' Car Live at IMTS Local Motors Begins Their Six Day Quest to 3D Print the 'Strati' Car Live at IMTS An article...