中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

76 records (took 0.024 seconds)

    METHODS, SYSTEMS AND APPARATUS FOR CONTROLLING OPERATION OF TWO ALTERNATING CURRENT (AC) MACHINES
    31.
    发明申请
    METHODS, SYSTEMS AND APPARATUS FOR CONTROLLING OPERATION OF TWO ALTERNATING CURRENT (AC) MACHINES 有权
    用于控制两台交流电机（AC）机器的操作的方法，系统和装置

    公开(公告)号：US20100301787A1

    公开(公告)日：2010-12-02

    申请号：US12473988

    申请日：2009-05-28

    Applicant: GABRIEL GALLEGOS-LOPEZ ,  JAMES M. NAGASHIMA ,  MILUN PERISIC ,  SILVA HITI

    Inventor： GABRIEL GALLEGOS-LOPEZ ,  JAMES M. NAGASHIMA ,  MILUN PERISIC ,  SILVA HITI

    IPC: H02P21/00

    CPC classification number: H02P5/74 ,  H02P21/22

    Abstract: A system is provided for controlling two alternating current (AC) machines via a five-phase PWM inverter module. The system comprises a first control loop, a second control loop, and a current command adjustment module. The current command adjustment module operates in conjunction with the first control loop and the second control loop to continuously adjust current command signals that control the first AC machine and the second AC machine such that they share the input voltage available to them without compromising the target mechanical output power of either machine. This way, even when the phase voltage available to either one of the machines decreases, that machine outputs its target mechanical output power.

    Abstract translation: 提供一种用于通过五相PWM逆变器模块控制两个交流（AC）机器的系统。 该系统包括第一控制回路，第二控制回路和电流指令调整模块。 电流指令调整模块与第一控制回路和第二控制回路结合操作，以连续地调节控制第一交流电机和第二交流电机的电流指令信号，使得它们共享可用的输入电压，而不损害目标机械 两台机器的输出功率。 这样，即使可用于任何一台机器的相电压降低，该机器输出其目标机械输出功率。

    Current regulator and current control method and system for AC motors
    32.
    发明授权
    Current regulator and current control method and system for AC motors 有权
    交流电机的电流调节器和电流控制方法及系统

    公开(公告)号：US07843162B2

    公开(公告)日：2010-11-30

    申请号：US12048071

    申请日：2008-03-13

    Applicant: Bonho Bae ,  Nitinkumar R. Patel ,  Steven E. Schulz ,  James M. Nagashima ,  Jung Sik Yim ,  Seung Ki Sul

    Inventor： Bonho Bae ,  Nitinkumar R. Patel ,  Steven E. Schulz ,  James M. Nagashima ,  Jung Sik Yim ,  Seung Ki Sul

    IPC: H02P27/04

    CPC classification number: H02P21/22

    Abstract: Methods and systems are provided for controlling an AC motor via an inverter. The method includes determining a delay-compensated offset based on a synchronous frame current, producing a current error based on a synchronous frame current and a commanded current, producing a voltage error based on an anti-windup offset and the current error, producing a commanded voltage based on the delay-compensated offset and the voltage error, and providing the inverter with the commanded voltage.

    Abstract translation: 提供了用于通过逆变器控制AC电动机的方法和系统。 该方法包括基于同步帧电流确定延迟补偿的偏移，基于同步帧电流和指令电流产生电流误差，产生基于抗饱和偏移和当前误差的电压误差，产生命令 基于延迟补偿偏移和电压误差的电压，并向逆变器提供指令电压。

    DOUBLE ENDED INVERTER SYSTEM FOR A VEHICLE HAVING TWO ENERGY SOURCES THAT EXHIBIT DIFFERENT OPERATING CHARACTERISTICS
    35.
    发明申请
    DOUBLE ENDED INVERTER SYSTEM FOR A VEHICLE HAVING TWO ENERGY SOURCES THAT EXHIBIT DIFFERENT OPERATING CHARACTERISTICS 有权
    具有两个能够显示不同操作特性的能源的车辆的双端逆变器系统

    公开(公告)号：US20090033252A1

    公开(公告)日：2009-02-05

    申请号：US12110950

    申请日：2008-04-28

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

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

    IPC: H02P4/00 ,  H02P27/06

    CPC classification number: B60L11/1868 ,  B60L2210/40 ,  H02J1/102 ,  H02J2001/008 ,  H02M3/33584 ,  Y02T10/7005 ,  Y02T10/7066 ,  Y02T10/7241

    Abstract: A double ended inverter system for an AC electric traction motor of a vehicle is disclosed. The inverter system serves as an interface between two different energy sources having different operating characteristics. The inverter system includes a first energy source having first operating characteristics associated therewith, and a first inverter subsystem coupled to the first energy source and configured to drive the AC electric traction motor. The inverter system also includes a second energy source having second operating characteristics associated therewith, wherein the first operating characteristics and the second operating characteristics are different, and a second inverter subsystem coupled to the second energy source and configured to drive the AC electric traction motor. In addition, the inverter system has a controller coupled to the first inverter subsystem and to the second inverter subsystem. The controller is configured to influence operation of the first inverter subsystem and the second inverter subsystem to manage power transfer among the first energy source, the second energy source, and the AC electric traction motor.

    Abstract translation: 公开了一种用于车辆的交流电力牵引电动机的双端逆变器系统。 逆变器系统用作具有不同操作特性的两个不同能量源之间的接口。 逆变器系统包括具有与其相关联的第一操作特性的第一能量源和耦合到第一能量源并被配置为驱动AC电力牵引电动机的第一逆变器子系统。 逆变器系统还包括具有与其相关联的第二操作特性的第二能量源，其中第一操作特性和第二操作特性不同，以及耦合到第二能量源并被配置为驱动交流电力牵引电动机的第二逆变器子系统。 此外，逆变器系统具有耦合到第一逆变器子系统和第二逆变器子系统的控制器。 控制器被配置为影响第一逆变器子系统和第二逆变器子系统的操作，以管理第一能量源，第二能量源和交流电力牵引电动机之间的功率传递。

    DOUBLE-ENDED INVERTER SYSTEM WITH ISOLATED NEUTRAL TOPOLOGY
    38.
    发明申请
    DOUBLE-ENDED INVERTER SYSTEM WITH ISOLATED NEUTRAL TOPOLOGY 有权
    具有孤立中性拓扑学的双端逆变器系统

    公开(公告)号：US20090032316A1

    公开(公告)日：2009-02-05

    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: B60K1/00

    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。

    Method and system for improved thermal management of a voltage source inverter operating at low output frequency utilizing a zero vector modulation technique
    39.
    发明授权
    Method and system for improved thermal management of a voltage source inverter operating at low output frequency utilizing a zero vector modulation technique 有权
    利用零向量调制技术改进以低输出频率工作的电压源逆变器的热管理方法和系统

    公开(公告)号：US07061134B2

    公开(公告)日：2006-06-13

    申请号：US10632257

    申请日：2003-08-01

    Applicant: Silva Hiti ,  Constantin C. Stancu ,  Khwaja Rahman ,  Scott D. Downer ,  James M. Nagashima ,  Eric R. Ostrom

    Inventor： Silva Hiti ,  Constantin C. Stancu ,  Khwaja Rahman ,  Scott D. Downer ,  James M. Nagashima ,  Eric R. Ostrom

    IPC: H02P9/04 ,  H02P5/34

    CPC classification number: H02P27/12 ,  H02M7/5387 ,  H02M2001/0054 ,  H02M2007/53876 ,  Y02B70/1491

    Abstract: The present invention includes a method for thermal management in a voltage source inverter. The method includes sensing a low output frequency condition, determining a zero vector modulation responsive to the sensed low output frequency condition, and applying the determined zero vector modulation to reduce thermal stress in the voltage source inverter. The step of determining the zero vector modulation responsive to the sensed low output frequency condition includes mapping an output voltage requirement to a space vector structure and determining state switching space vectors based on the mapped output voltage requirement. The step of determining the state switching space vector includes determining active state switching space vectors associated with the state switching space vectors, determining duty cycles for the active state switching space vectors based on the active state switching space vectors, and determining a duty cycle for at least one zero state switching space vector based on the determined duty cycles of the active state switching space vectors and a switching period.

    Abstract translation: 本发明包括电压源逆变器中的热管理方法。 该方法包括感测低输出频率条件，响应于感测的低输出频率条件确定零矢量调制，以及应用所确定的零矢量调制以减小电压源逆变器中的热应力。 响应于感测的低输出频率条件来确定零矢量调制的步骤包括将输出电压需求映射到空间矢量结构，并且基于映射的输出电压要求来确定状态切换空间矢量。 确定状态切换空间矢量的步骤包括确定与状态切换空间矢量相关联的活动状态切换空间矢量，基于活动状态切换空间矢量确定活动状态切换空间矢量的占空比，以及确定在 基于确定的活动状态切换空间矢量的占空比和切换周期的至少一个零状态切换空间矢量。

    Position sensor fault tolerant control for automotive propulsion system
    40.
    发明授权
    Position sensor fault tolerant control for automotive propulsion system 有权
    汽车推进系统的位置传感器容错控制

    公开(公告)号：US07002318B1

    公开(公告)日：2006-02-21

    申请号：US10948630

    申请日：2004-09-23

    Applicant: Steven E. Schulz ,  Sean E Gleason ,  Nitinkumar R. Patel ,  James M. Nagashima ,  Yu-Seok Jeong ,  Seung Ki Sul ,  Michael Milani

    Inventor： Steven E. Schulz ,  Sean E Gleason ,  Nitinkumar R. Patel ,  James M. Nagashima ,  Yu-Seok Jeong ,  Seung Ki Sul ,  Michael Milani

    IPC: H02P7/50 ,  B80L3/00

    CPC classification number: B60L3/0038 ,  H02P2203/05 ,  Y02T10/642

    Abstract: A control system for a motor including a rotor comprises a sensorless sensor module that includes a saliency-based estimator module that generates a first rotor position signal based on saliency and a back electromotive force (emf) estimator module that generates a second rotor position signal based on back emf. A selector selects the first rotor position signal for rotor speeds below a first rotor speed and the second rotor position signal for rotor speeds above the first rotor speed. A rotor position sensor senses a position of the rotor and generates a third rotor position signal. A fault detection module senses faults in the rotor position sensor and outputs the third rotor position signal when a fault is not detected and one of the first and second rotor position signals when the fault is detected. An indirect field oriented control (IFOC) system controls the motor based on a selected one of the first, second and third rotor position signals.

    Abstract translation: 一种用于包括转子的电动机的控制系统包括无传感器传感器模块，其包括基于显着性产生第一转子位置信号的基于显着的估计器模块和产生基于第二转子位置信号的反电动势（emf）估计器模块 在后面emf 选择器选择转子速度低于第一转子速度的第一转子位置信号和用于转子速度高于第一转子速度的第二转子位置信号。 转子位置传感器感测转子的位置并产生第三转子位置信号。 当检测到故障时，故障检测模块检测转子位置传感器中的故障并输出第三转子位置信号，当检测到故障时，第一和第二转子位置信号中的一个。 间接磁场定向控制（IFOC）系统基于第一，第二和第三转子位置信号中选定的一个来控制电动机。

Patent Agency Ranking