公开(公告)号：US09071187B2

公开(公告)日：2015-06-30

申请号：US14073377

申请日：2013-11-06

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Steven E. Schulz ,  Milun Perisic ,  Silva Hiti ,  Ronghui Li

IPC: G05B23/02 ,  H02P23/14

CPC classification number: H02P23/14

Abstract: A method of increasing a current sensing range for a vehicle or other polyphase motor system includes measuring phase currents delivered to a motor of the system. A controller calculates an absolute value of each phase current, compares each calculated absolute value to a saturation limit to determine whether only one sensor is saturated, and extrapolates a phase current value of the saturated sensor. The calculated temporary phase current is used as the extrapolated phase current value for the saturated sensor, and a control action is executed using the extrapolated phase current value only when the calculated temporary phase current value exceeds the measured value for the saturated sensor and a sign of the calculated temporary phase current value matches that of the measured value for the saturated sensor. A system includes the motor, a power inverter module, phase current sensors, and a controller which executes the method.

Abstract translation: 增加车辆或其他多相电动机系统的电流感测范围的方法包括测量传递到系统的电动机的相电流。 控制器计算每相电流的绝对值，将每个计算的绝对值与饱和极限进行比较，以确定是否只有一个传感器饱和，并推断饱和传感器的相电流值。 所计算的临时相电流用作饱和传感器的外推相电流值，仅在计算出的临时相电流值超过饱和传感器的测量值时，才使用外插相电流值执行控制动作， 计算的临时相电流值与饱和传感器的测量值的匹配。 系统包括电动机，电力逆变器模块，相电流传感器和执行该方法的控制器。

公开(公告)号：US20150229249A1

公开(公告)日：2015-08-13

申请号：US14179590

申请日：2014-02-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jihoon Jang ,  Yo Chan Son ,  Ronghui Li ,  Reynaldo Arturo Suazo Zepeda

IPC: H02P6/08 ,  H02P9/00

CPC classification number: H02P29/60 ,  H02P29/032

Abstract: A method can be used to control an electric motor-generator in order to avoid demagnetization of the permanent magnets in the electric motor-generator. The method includes the following steps: (a) receiving, via a control module, a torque command input; (b) determining, via the control module, an available torque of the electric motor-generator based, at least in part, on a rotor temperature and a magnitude of an electric current in the stator; (c) determining, via the control module, a torque command based, at least in part, on the available torque and the torque command input; and (d) commanding, via the control module, the electric motor-generator to generate torque in accordance with the torque command in order to avoid demagnetization of the permanent magnets.

Abstract translation: 可以使用一种方法来控制电动发电机，以避免电动发电机中的永久磁铁的退磁。 该方法包括以下步骤：（a）通过控制模块接收转矩指令输入; （b）至少部分地基于所述定子中的转子温度和电流的大小，经由所述控制模块确定所述电动发电机的可用转矩; （c）经由所述控制模块确定至少部分地基于所述可用转矩和所述转矩指令输入的转矩指令; 和（d）通过控制模块指示电动发电机根据转矩指令产生转矩，以避免永磁体的退磁。

公开(公告)号：US20150123578A1

公开(公告)日：2015-05-07

申请号：US14073377

申请日：2013-11-06

Applicant: GM Global Technology Operations LLC

Inventor： Steven E. Schulz ,  Milun Perisic ,  Silva Hiti ,  Ronghui Li

IPC: H02P23/14

CPC classification number: H02P23/14

Abstract: A method of increasing a current sensing range for a vehicle or other polyphase motor system includes measuring phase currents delivered to a motor of the system. A controller calculates an absolute value of each phase current, compares each calculated absolute value to a saturation limit to determine whether only one sensor is saturated, and extrapolates a phase current value of the saturated sensor. The calculated temporary phase current is used as the extrapolated phase current value for the saturated sensor, and a control action is executed using the extrapolated phase current value only when the calculated temporary phase current value exceeds the measured value for the saturated sensor and a sign of the calculated temporary phase current value matches that of the measured value for the saturated sensor. A system includes the motor, a power inverter module, phase current sensors, and a controller which executes the method.

Abstract translation: 增加车辆或其他多相电动机系统的电流感测范围的方法包括测量传递到系统的电动机的相电流。 控制器计算每相电流的绝对值，将每个计算的绝对值与饱和极限进行比较，以确定是否只有一个传感器饱和，并推断饱和传感器的相电流值。 所计算的临时相电流用作饱和传感器的外推相电流值，仅在计算出的临时相电流值超过饱和传感器的测量值时，才使用外插相电流值执行控制动作， 计算的临时相电流值与饱和传感器的测量值的匹配。 系统包括电动机，电力逆变器模块，相电流传感器和执行该方法的控制器。