The invention relates to the technical field of circuit design, in particular to a synchronous motor control circuit which comprises a high speed short-circuit circuit and a high speed short-circuit control circuit. The high speed short-circuit circuit comprises a first relay and a second relay, the first relay and the second relay are respectively in star-shaped short circuit with an output circuit of a three-phase winding of the motor, and the high speed short-circuit control circuit comprises two control signal output ends and a signal input end. The two control signal output ends are connected with the control end of the first relay and the control end of the second relay respectively, the signal input end is used for receiving control signals so as to control the first relay and the second relay to act, and therefore the star sealing circuit is controlled to be switched between the star sealing state and the star unsealing state. Therefore, when the elevator stops or the permanentmagnet synchronous motor of the elevator loses power, the star sealing circuit is controlled to be in a star sealing state, safety accidents caused by sliding of the elevator are prevented, and whenthe elevator starts running, the star sealing circuit is controlled to be switched to a star sealing releasing state, so the elevator works normally, and the running safety of the elevator is improved.

    本发明涉及电路设计技术领域,具体涉及一种同步电机控制电路,其包括封星电路和封星控制电路;封星电路包括第一继电器和第二继电器,第一继电器和第二继电器分别与电机的三相绕组的输出线路按照星形短接,封星控制电路包括两个控制信号输出端和一个信号输入端,两个控制信号输出端分别与第一继电器和第二继电器的控制端连接,信号输入端用于接收控制信号,以控制第一继电器和第二继电器动作,从而控制封星电路在封星状态和解除封星状态间切换。这样电梯停梯或者电梯的永磁同步电机失电时,控制封星电路在封星状态,防止电梯溜车产生安全事故,当电梯启动运行时,控制封星电路切换到解除封星状态,使得电梯正常工作,这样提高了电梯运行的安全。


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    Title :

    Synchronous motor control circuit


    Additional title:

    一种同步电机控制电路


    Contributors:
    HE YI (author) / PENG BO (author) / TANG PENG (author) / CAO LIYAN (author)

    Publication date :

    2020-11-17


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern / B66B Aufzüge , ELEVATORS / H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen



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