Motor driving system, vehicle power assembly comprising motor driving system and vehicle

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Motor driving system, vehicle power assembly comprising motor driving system and vehicle

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LIU YANG

The present invention relates to a motor driving system comprising: a motor comprising a rotor coil and a three-phase stator coil; a high-voltage battery pack; the alternating current end of the three-phase inverter is connected to the first end of the three-phase stator coil, and the direct current end of the three-phase inverter is connected to the high-voltage battery pack; the excitation device is used for supplying power to a rotor coil of the motor; the first switch assembly can form a first connection state and a second connection state, and is configured to connect the second end of the three-phase stator coil to the neutral point in the first connection state and connect the second end of the three-phase stator coil to an external power grid in the second connection state; the second switch assembly is connected between the excitation device and a rotor coil of the motor; and the controller is configured to selectively control the connection state of the first switch assembly and the second switch assembly, so that the system works in different modes. The invention further relates to a vehicle power assembly comprising the system and a vehicle.

本发明涉及一种电机驱动系统，该系统包括：电机，该电机包括转子线圈和三相定子线圈；高压电池包；三相逆变器，其交流端连接至三相定子线圈的第一端，其直流端连接至高压电池包；励磁装置，用于向电机的转子线圈供电；第一开关组件，其能够形成第一连接状态和第二连接状态，并且配置为在第一连接状态下将三相定子线圈的第二端连接至中性点，并且在第二连接状态下将三相定子线圈的第二端连接至外部电网；第二开关组件，其连接在励磁装置与电机的转子线圈之间；以及控制器，其配置为选择性地控制第一开关组件和第二开关组件的连接状态，以使系统在不同模式下工作。本发明还涉及一种包括该系统的车辆动力总成和车辆。