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    • 1. 发明申请
    • FAIL-SAFE CONTROLS FOR ELECTRIC TRACTION DRIVE SYSTEMS
    • 电动牵引驱动系统的失效安全控制
    • US20110089876A1
    • 2011-04-21
    • US12582562
    • 2009-10-20
    • NITINKUMAR R. PATELTIM M. GREWEYO CHAN SON
    • NITINKUMAR R. PATELTIM M. GREWEYO CHAN SON
    • H02P6/18
    • H02P21/04B60L3/0038B60L3/06H02P21/24H02P29/032Y02T10/643
    • A method is provided for operation of an internal permanent magnet motor having a rotor. The method includes determining whether a neutral point access signal is received from the rotor and operating the internal permanent magnet motor using sensorless signals corresponding to a rotor position and a rotor speed of the rotor derived by a first sensorless signal estimation method when the neutral point access signal is received from the rotor, wherein the first sensorless signal estimation method utilizes the neutral point access signal to generate the rotor position and the rotor speed. The method further includes operating the internal permanent magnet motor using sensorless signals corresponding to a rotor position and a rotor speed of the rotor derived by a second sensorless signal estimation method when the neutral point access signal is not received from the rotor, wherein the second sensorless signal estimation method does not utilize the neutral point access signal to generate the rotor position and the rotor speed.
    • 提供一种用于具有转子的内部永磁电动机的操作的方法。 该方法包括:当中性点访问时,确定是否从转子接收到中性点访问信号,并使用与转子位置相对应的无传感器信号和由第一无传感器信号估计方法获得的转子的转子速度来操作内部永磁电动机 信号从转子接收,其中第一无传感器信号估计方法利用中性点存取信号产生转子位置和转子速度。 该方法还包括当没有从转子接收到中性点存取信号时,使用与转子位置相对应的无转速信号和由第二无传感器信号估计方法导出的转子的转子速度来操作内部永磁电动机,其中第二无传感器 信号估计方法不利用中性点存取信号产生转子位置和转子转速。
    • 2. 发明申请
    • ELECTRIC MOTOR STATOR WINDING TEMPERATURE ESTIMATION
    • 电动机定子绕组温度估计
    • US20090189561A1
    • 2009-07-30
    • US12019395
    • 2008-01-24
    • NITINKUMAR R. PATELYO CHAN SONSILVA HITISTEVEN E. SCHULZ
    • NITINKUMAR R. PATELYO CHAN SONSILVA HITISTEVEN E. SCHULZ
    • H02P23/14H02K9/00H02K11/00
    • H02H7/0852
    • A temperature estimation controller and methods are provided for controlling a torque command to prevent overheating of one or more of a plurality of phases of a permanent magnet motor. The temperature estimation controller includes a low speed temperature estimation module, a transition module and a temperature dependent torque command derater block. The low speed temperature estimation module determines a stator temperature of each of a plurality of phases of the permanent magnet motor in response to first thermal impedances measured for each of the plurality of phases with respect to a thermal neutral. The transition module is coupled to the low speed temperature estimation module and outputs the stator temperature of each of a plurality of phases of the permanent magnet motor as determined by the low speed temperature estimation module when a detected speed of the permanent magnet motor is less than a first predetermined speed. The temperature dependent torque command derater block is coupled to the transition module and derates the torque command in response to the stator temperature of one or more of the plurality of phases.
    • 提供了一种用于控制转矩指令以防止永磁电动机的多相中的一个或多个相的过热的温度估计控制器和方法。 温度估计控制器包括低速温度估计模块,过渡模块和与温度相关的转矩指令减排模块。 低速温度估计模块响应于相对于热中性点对多个相中的每一个测量的第一热阻而确定永磁电动机的多相的每个相的定子温度。 当所述永磁电动机的检测速度小于所述低速温度估计模块时,所述过渡模块耦合到所述低速温度估计模块,并且输出由所述低速温度估计模块确定的所述永磁电动机的多个相中的每一个的定子温度。 第一预定速度。 与温度相关的转矩指令转换器模块耦合到转换模块,并响应于多个相位中的一个或多个的定子温度降低转矩指令。