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    • 1. 发明授权
    • Protection for permanent magnet motor control circuits
    • 永磁电机控制电路保护
    • US07652858B2
    • 2010-01-26
    • US11758974
    • 2007-06-06
    • David TangBrian A WelchkoSilva HitiMark L Selogie
    • David TangBrian A WelchkoSilva HitiMark L Selogie
    • H02H7/09
    • H02H7/0838
    • Methods and apparatus are provided for protecting a motor control circuit in a permanent magnet electric motor system. The permanent magnet electric motor system includes a permanent magnet electric motor having a predetermined number of windings corresponding to the phases of the permanent magnet electric motor and a direct current (DC) bus coupled to a power source for providing operational power for the electric motor system. A motor control circuit is connected to the DC bus for receiving the operational power therefrom and is connected to the windings of the permanent magnet electric motor for controlling the permanent magnet electric motor. A protection circuit is connected to the DC bus for receiving the voltage therefrom for operation of the protection circuit and for detecting predetermined motor control circuit fault conditions from voltage sensed on the DC bus and in response thereto providing protection for the motor control circuit.
    • 提供了用于保护永磁电动机系统中的电动机控制电路的方法和装置。 永磁电动机系统包括具有对应于永磁电动机的相位的预定数量的绕组的永磁电动机和耦合到用于为电动机系统提供动力的电源的直流(DC)母线 。 电动机控制电路连接到DC总线,用于从其接收操作电力,并连接到用于控制永磁电动机的永磁电动机的绕组。 保护电路连接到DC总线,用于从其接收电压用于保护电路的操作,并且用于从DC总线上感测到的电压检测预定的电机控制电路故障状况,并响应于此为电机控制电路提供保护。