A method for determining a speed of an electric motor of an elevator comprising a plurality of phases for supplying electric current to the electric motor. The method comprises forming an effective short-circuit between at least two of the plurality of phases of the electric motor, determining a short-circuit current, the short-circuit current being the current flowing in the effective short-circuit, and determining the speed of the electric motor based on at least one characteristic of the short-circuit current.


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    Title :

    METHOD FOR DETERMINING SPEED OF AN ELECTRIC MOTOR, AN ELEVATOR CONTROL UNIT UTILIZING THE METHOD THEREOF AND A COMPUTER PROGRAM PRODUCT


    Contributors:

    Publication date :

    2017-09-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66B Aufzüge , ELEVATORS / H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern