利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

33 条记录 (耗时 0.033 秒)

    Method and system for controlling a power inverter in electric drives
    5.
    发明授权
    Method and system for controlling a power inverter in electric drives 有权
    用于控制电力变频器中的电力变换器的方法和系统

    公开(公告)号：US07652443B2

    公开(公告)日：2010-01-26

    申请号：US11923270

    申请日：2007-10-24

    申请人： Steven E. Schulz ,  Stephen T. West ,  Brian A. Welchko ,  Silva Hiti

    发明人： Steven E. Schulz ,  Stephen T. West ,  Brian A. Welchko ,  Silva Hiti

    IPC分类号： H02P7/00

    CPC分类号： B60L15/08 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2240/526 ,  B60L2270/14 ,  Y02T10/645

    摘要： Methods and systems for controlling a power inverter in an electric drive system of an automobile are provided. The various embodiments control the power inverter by, responsive to a commanded torque of the electric motor being below a first torque level, controlling the power inverter to set a switching frequency of the power inverter at a first set frequency; and, responsive to the commanded torque of the electric motor being between the first torque level and a second torque level, controlling the power inverter to determine the switching frequency of the power inverter as a function of the commanded torque of the electric motor while maintaining the switching frequency above a dynamic frequency limit. The method reduces switching frequencies in the inverter at high commanded torques, while maintaining the switching frequencies above dynamic frequency limit that provides effective control over the motor.

    摘要翻译： 提供了一种用于控制汽车电驱动系统中的电力逆变器的方法和系统。 各种实施例通过响应于电动机的指令转矩低于第一转矩水平来控制功率逆变器，控制功率逆变器将功率逆变器的开关频率设定在第一设定频率; 并且响应于所述电动机的所述指令转矩在所述第一转矩水平和第二转矩水平之间，控制所述电力逆变器，以根据所述电动机的指令转矩来确定所述电力逆变器的开关频率，同时保持 开关频率高于动态频率限制。 该方法以较高的指令转矩降低变频器的开关频率，同时保持开关频率高于动态频率限制，从而提供对电机的有效控制。

    Method And Apparatus For Detecting An Insufficient Phase Current In A Permanent Magnet Synchronous Motor
    6.
    发明申请
    Method And Apparatus For Detecting An Insufficient Phase Current In A Permanent Magnet Synchronous Motor 有权
    用于检测永磁同步电机中相位不足的方法和装置

    公开(公告)号：US20090271060A1

    公开(公告)日：2009-10-29

    申请号：US12109457

    申请日：2008-04-25

    申请人： Stephen T. West ,  Wei D. Wang ,  Sean E. Gleason

    发明人： Stephen T. West ,  Wei D. Wang ,  Sean E. Gleason

    IPC分类号： G01M17/007 ,  G01R31/34

    CPC分类号： H02P29/032

    摘要： A method is provided for detecting an insufficient or missing phase current in a permanent magnet synchronous motor, and includes determining a composite vector position of a combined three-phase phase current with respect to a stationary portion of the motor, and assigning a sector to the position. The method includes comparing the phase current to a calibrated threshold current corresponding to the sector, and executing a response when the absolute value is less than the threshold. A vehicle includes an energy storage device (ESD), a motor/generator configured as a permanent magnet synchronous motor, a voltage inverter, and a bus for conducting DC current from the ESD to the inverter. A controller detects an insufficient phase current, determines a current vector position of the three-phase AC, assigns a sector to the position, and executes a response when an absolute value of the phase current is less than a calibrated threshold.

    摘要翻译： 提供了一种用于检测永磁同步电动机中不足或缺少相电流的方法，包括确定组合的三相相电流相对于电动机的静止部分的复合矢量位置，并将扇区分配给 位置。 该方法包括将相电流与对应于扇区的校准阈值电流进行比较，以及当绝对值小于阈值时执行响应。 车辆包括能量存储装置（ESD），被配置为永磁同步电动机的电动机/发电机，电压逆变器和用于将DC电流从ESD引导到逆变器的总线。 控制器检测到不足的相电流，确定三相AC的当前矢量位置，将该扇区分配给该位置，并且当相电流的绝对值小于校准阈值时执行响应。

    METHOD AND SYSTEM FOR MOTOR CONTROL WITH DELAY COMPENSATION
    8.
    发明申请
    METHOD AND SYSTEM FOR MOTOR CONTROL WITH DELAY COMPENSATION 有权
    具有延迟补偿的电机控制方法与系统

    公开(公告)号：US20080272732A1

    公开(公告)日：2008-11-06

    申请号：US11743718

    申请日：2007-05-03

    申请人： Steven E. Schulz ,  Nitinkumar R. Patel ,  Bonho Bae ,  Stephen T. West

    发明人： Steven E. Schulz ,  Nitinkumar R. Patel ,  Bonho Bae ,  Stephen T. West

    IPC分类号： H02P27/04

    CPC分类号： H02P23/0004

    摘要： Methods and systems are provided for controlling an electric machine via an inverter while compensating for one or more hardware delays. The method includes receiving a control signal, producing a first sampling signal based on the control signal, and adjusting the sampling signal to compensate for a first delay of the one or more hardware delays. The inverter is operable to produce a voltage signal based on the control signal, and the electric machine is operable to produce a current based on the voltage signal. A sampling of the current is performed based on the first sampling signal.

    摘要翻译： 提供了用于通过反相器控制电机的方法和系统，同时补偿一个或多个硬件延迟。 该方法包括接收控制信号，基于控制信号产生第一采样信号，以及调整采样信号以补偿一个或多个硬件延迟的第一延迟。 逆变器可操作以基于控制信号产生电压信号，并且电机可操作以基于电压信号产生电流。 基于第一采样信号执行电流的采样。

    Method and apparatus for detecting an insufficient phase current in a permanent magnet synchronous motor
    9.
    发明授权
    Method and apparatus for detecting an insufficient phase current in a permanent magnet synchronous motor 有权
    用于检测永磁同步电动机中的相电流不足的方法和装置

    公开(公告)号：US08065050B2

    公开(公告)日：2011-11-22

    申请号：US12109457

    申请日：2008-04-25

    申请人： Stephen T. West ,  Wei D. Wang ,  Sean E. Gleason

    发明人： Stephen T. West ,  Wei D. Wang ,  Sean E. Gleason

    IPC分类号： G01M17/00 ,  G06F7/02

    CPC分类号： H02P29/032

    摘要： A method is provided for detecting an insufficient or missing phase current in a permanent magnet synchronous motor, and includes determining a composite vector position of a combined three-phase phase current with respect to a stationary portion of the motor, and assigning a sector to the position. The method includes comparing the phase current to a calibrated threshold current corresponding to the sector, and executing a response when the absolute value is less than the threshold. A vehicle includes an energy storage device (ESD), a motor/generator configured as a permanent magnet synchronous motor, a voltage inverter, and a bus for conducting DC current from the ESD to the inverter. A controller detects an insufficient phase current, determines a current vector position of the three-phase AC, assigns a sector to the position, and executes a response when an absolute value of the phase current is less than a calibrated threshold.

    摘要翻译： 提供了一种用于检测永磁同步电动机中不足或缺少相电流的方法，包括确定组合的三相相电流相对于电动机的静止部分的复合矢量位置，并将扇区分配给 位置。 该方法包括将相电流与对应于扇区的校准阈值电流进行比较，以及当绝对值小于阈值时执行响应。 车辆包括能量存储装置（ESD），被配置为永磁同步电动机的电动机/发电机，电压逆变器和用于将DC电流从ESD引导到逆变器的总线。 控制器检测到不足的相电流，确定三相AC的当前矢量位置，将该扇区分配给该位置，并且当相电流的绝对值小于校准阈值时执行响应。

    Method and apparatus to monitor a temperature sensing device
    10.
    发明授权
    Method and apparatus to monitor a temperature sensing device 有权
    监测温度感测装置的方法和装置

    公开(公告)号：US07555411B2

    公开(公告)日：2009-06-30

    申请号：US11669439

    申请日：2007-01-31

    申请人： Wei D. Wang ,  Peter E. Wu ,  Slobodan Gataric ,  Stephen T. West ,  Harry J. Bauer

    发明人： Wei D. Wang ,  Peter E. Wu ,  Slobodan Gataric ,  Stephen T. West ,  Harry J. Bauer

    IPC分类号： G06F11/00

    CPC分类号： G01K15/00 ,  G01K15/007

    摘要： A method and an article of manufacture are provided to monitor a temperature sensing circuit and detect a fault therein. The method comprises monitoring sensor readings output from a plurality of temperature sensing circuits. An average sensor reading is determined, calculated from the sensor readings output from a subset of the temperature sensing circuits. Each of the sensor readings is compared to the average sensor reading. A fault is identified when one of the sensor readings deviates from the average sensor reading by an amount greater than a threshold, more particularly when one of the sensor readings deviates from the average sensor reading by an amount greater than the threshold at least a quantity of X times out of Y sensor readings.

    摘要翻译： 提供了一种方法和制造物品来监视温度感测电路并检测其中的故障。 该方法包括监测从多个温度感测电路输出的传感器读数。 根据从温度感测电路的子集输出的传感器读数来确定平均传感器读数。 将每个传感器读数与平均传感器读数进行比较。 当其中一个传感器读数偏离平均传感器读数大于阈值的量时，识别故障，更具体地，当传感器读数之一偏离平均传感器读数大于阈值的量时，至少一定数量的 X传感器读数超出X次。