A method of operating an elevator system including: controlling, using a controller, a plurality of components of the elevator system, controlling includes operating at least one of an internal power source, an elevator car, a drive unit, a power conversion device, and a brake; detecting when an external power source is unavailable; deactivating the power conversion device when external power source is unavailable; determining at least one of a motoring mode and a near balance mode; connecting to an internal power source when at least one of the motoring mode and the near balance mode is determined; activating the power conversion device when at least one of the motoring mode and the near balance mode is determined; and increasing, using the internal power source, voltage of the drive unit, the internal power source is configured to provide an uninterrupted power to drive unit when the external power source is unavailable.


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    Title :

    UNINTERRUPTED RESCUE OPERATION


    Contributors:

    Publication date :

    2018-08-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66B Aufzüge , ELEVATORS



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