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    Position sensorless control algorithm for AC machine
    41.
    发明授权
    Position sensorless control algorithm for AC machine 有权
    交流电机无位置传感器控制算法

    公开(公告)号：US06894454B2

    公开(公告)日：2005-05-17

    申请号：US10268503

    申请日：2002-10-10

    Applicant: Nitinkumar R. Patel ,  Steven E. Schulz ,  James M. Nagashima ,  Seung Ki Sul ,  Yo-Chan Son ,  Bon-Ho Bae

    Inventor： Nitinkumar R. Patel ,  Steven E. Schulz ,  James M. Nagashima ,  Seung Ki Sul ,  Yo-Chan Son ,  Bon-Ho Bae

    IPC: H02P21/00 ,  H02P1/46 ,  H02P6/18 ,  H02P27/04

    CPC classification number: H02P21/00 ,  H02P21/26 ,  H02P21/32

    Abstract: A control system for an electric motor including an inverter for providing power to the electric motor, a controller for controlling the inverter, a first motor speed control block in the controller injecting a high frequency signal into the electric motor to determine the speed and position of the electric motor, a second motor speed control block in the controller detecting the back electromotive force to determine the speed and position of the electric motor, and a transition control block in said controller to vary operation between the first motor speed control block and the second motor speed control block.

    Abstract translation: 一种用于电动机的控制系统，包括用于向电动机提供电力的逆变器，用于控制逆变器的控制器，控制器中的第一电动机速度控制块，将高频信号注入电动机以确定速度和位置 所述电动机，所述控制器中的第二电动机速度控制块检测所述反电动势以确定所述电动机的速度和位置;以及所述控制器中的转换控制块，以改变所述第一电动机速度控制块和所述第二电动机速度控制块之间的操作 电机速度控制块。

    Apparatus and method for controlling permanent magnet electric machines
    43.
    发明授权
    Apparatus and method for controlling permanent magnet electric machines 失效

    公开(公告)号：US06504329B2

    公开(公告)日：2003-01-07

    申请号：US09829106

    申请日：2001-04-09

    Applicant: Constantin C. Stancu ,  Silva Hiti ,  James M. Nagashima

    Inventor： Constantin C. Stancu ,  Silva Hiti ,  James M. Nagashima

    IPC: H02P706

    CPC classification number: B60L15/025 ,  H02P21/08 ,  Y02T10/643

    Abstract: A control scheme for an surface-mounted permanent-magnet synchronous (SMPMS) drive uses a combination of an open-loop magnetizing current reference calculation and a stabilizing feedback term, which speeds-up the torque transient response. The feedback term increases the stability margin during torque transients by increasing the available voltage margin for current control. The magnetizing current reference calculation takes into account the saturation effects in the SMPMS drive, which occur at peak torque points, and compensates for them. By taking into account saturation effects, stable operation at high speed is achieved, thereby increasing the speed range of the SMPMS drive.

    Double-ended inverter system with isolated neutral topology
    45.
    发明授权
    Double-ended inverter system with isolated neutral topology 有权
    具有隔离中性拓扑的双端逆变器系统

    公开(公告)号：US08002056B2

    公开(公告)日：2011-08-23

    申请号：US12106875

    申请日：2008-04-21

    Applicant: Sibaprasad Chakrabarti ,  Gregory S. Smith ,  James M. Nagashima ,  Brian A. Welchko ,  Milun Perisic ,  George John

    Inventor： Sibaprasad Chakrabarti ,  Gregory S. Smith ,  James M. Nagashima ,  Brian A. Welchko ,  Milun Perisic ,  George John

    IPC: H02K1/32 ,  H02K3/24 ,  H02K5/18

    CPC classification number: B60K11/02 ,  B60L11/1861 ,  B60L15/02 ,  Y02T10/645 ,  Y02T10/7011 ,  Y02T10/7044 ,  Y02T10/705

    Abstract: Systems and methods are provided for an inverter system for use in a vehicle having a first energy source and a second energy source. The system comprises a motor having a first set of windings and a second set of windings. The first set of windings is electrically isolated from the second set of windings. The system further comprises a first inverter coupled to the first energy source and adapted to drive the motor, wherein the first set of windings are coupled to the first inverter. The system also comprises a second inverter coupled to the second energy source and adapted to drive the motor, wherein the second set of windings are coupled to the second inverter. A controller is coupled to the first inverter and the second inverter.

    Abstract translation: 提供了一种用于具有第一能量源和第二能量源的车辆中的逆变器系统的系统和方法。 该系统包括具有第一组绕组和第二组绕组的马达。 第一组绕组与第二组绕组电隔离。 该系统还包括耦合到第一能量源并适于驱动电动机的第一逆变器，其中第一组绕组耦合到第一逆变器。 该系统还包括耦合到第二能量源并适于驱动电动机的第二逆变器，其中第二组绕组耦合到第二逆变器。 控制器耦合到第一反相器和第二反相器。

    DOUBLE ENDED INVERTER SYSTEM WITH AN IMPEDANCE SOURCE INVERTER SUBSYSTEM
    47.
    发明申请
    DOUBLE ENDED INVERTER SYSTEM WITH AN IMPEDANCE SOURCE INVERTER SUBSYSTEM 有权
    具有阻抗源逆变器子系统的双端逆变器系统

    公开(公告)号：US20090034308A1

    公开(公告)日：2009-02-05

    申请号：US12132486

    申请日：2008-06-03

    Applicant: Brian A. WELCHKO ,  James M. NAGASHIMA ,  Gregory S. SMITH ,  Sibaprasad CHAKRABARTI ,  Milun PERISIC ,  George JOHN

    Inventor： Brian A. WELCHKO ,  James M. NAGASHIMA ,  Gregory S. SMITH ,  Sibaprasad CHAKRABARTI ,  Milun PERISIC ,  George JOHN

    IPC: H02M7/538

    CPC classification number: B60L11/1868 ,  Y02T10/7005 ,  Y02T10/7066

    Abstract: A double ended inverter system suitable for use with an AC electric traction motor of a vehicle is provided. The double ended inverter system cooperates with a first DC energy source and a second DC energy source, which may have different nominal voltages. The double ended inverter system includes an impedance source inverter subsystem configured to drive the AC electric traction motor using the first energy source, and an inverter subsystem configured to drive the AC electric traction motor using the second energy source. The double ended inverter system also utilizes a controller coupled to the impedance source inverter subsystem and to the inverter subsystem. The controller is configured to control the impedance source inverter subsystem and the inverter subsystem in accordance with a boost operating mode, a traditional inverter operating mode, and a recharge operating mode of the double ended inverter system.

    Abstract translation: 提供适用于车辆的交流电动牵引电动机的双端逆变器系统。 双端逆变器系统与可能具有不同标称电压的第一DC能量源和第二DC能量源协作。 双端逆变器系统包括：阻抗源逆变器子系统，被配置为使用第一能量源驱动交流电力牵引电动机;以及逆变器子系统，被配置为使用第二能量源驱动交流电力牵引电动机。 双端逆变器系统还使用耦合到阻抗源逆变器子系统和逆变器子系统的控制器。 控制器配置为根据升压运行模式，传统逆变器工作模式和双端逆变器系统的充电操作模式控制阻抗源逆变器子系统和逆变器子系统。

    CHARGING ENERGY SOURCES WITH A RECTIFIER USING DOUBLE-ENDED INVERTER SYSTEM
    49.
    发明申请
    CHARGING ENERGY SOURCES WITH A RECTIFIER USING DOUBLE-ENDED INVERTER SYSTEM 有权
    使用双端逆变器系统对整流器充电能源

    公开(公告)号：US20090033255A1

    公开(公告)日：2009-02-05

    申请号：US12136636

    申请日：2008-06-10

    Applicant: George JOHN ,  Sibaprasad CHAKRABARTI ,  Brian A. WELCHKO ,  Gregory S. SMITH ,  James M. NAGASHIMA ,  Milun PERISIC

    Inventor： George JOHN ,  Sibaprasad CHAKRABARTI ,  Brian A. WELCHKO ,  Gregory S. SMITH ,  James M. NAGASHIMA ,  Milun PERISIC

    IPC: H02P27/06

    CPC classification number: B60L11/1868 ,  Y02T10/7005 ,  Y02T10/7066

    Abstract: Systems and methods are provided for charging energy sources with a rectifier using a double-ended inverter system. An apparatus is provided for an electric drive system for a vehicle. The electric drive system comprises an electric motor configured to provide traction power to the vehicle. A first inverter is coupled to the electric motor and is configured to provide alternating current to the electric motor. A first energy source is coupled to the first inverter, wherein the first inverter is configured to provide power flow between the first energy source and the electric motor. A second inverter is coupled to the electric motor and is configured to provide alternating current to the electric motor. A rectifier is coupled to the second inverter and configured to produce a direct current output. The second inverter is configured to provide power from the rectifier to the electric motor.

    Abstract translation: 提供了系统和方法，用于使用双端逆变器系统对整流器充电能量源。 一种用于车辆的电驱动系统的装置。 电驱动系统包括被配置为向车辆提供牵引力的电动马达。 第一逆变器耦合到电动机并且被配置为向电动机提供交流电。 第一能量源耦合到第一逆变器，其中第一逆变器被配置为在第一能量源和电动机之间提供功率流。 第二逆变器耦合到电动机并且被配置为向电动机提供交流电。 整流器耦合到第二反相器并且被配置为产生直流输出。 第二逆变器被配置成从整流器向电动机提供电力。

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