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    RESCUE CONTROL AND METHOD OF OPERATING AN ELEVATOR SYSTEM INCLUDING A PERMANENT MAGNET (PM) SYNCHRONOUS MOTOR DRIVE SYSTEM
    1.
    发明申请
    RESCUE CONTROL AND METHOD OF OPERATING AN ELEVATOR SYSTEM INCLUDING A PERMANENT MAGNET (PM) SYNCHRONOUS MOTOR DRIVE SYSTEM 审中-公开

    公开(公告)号：US20180244492A1

    公开(公告)日：2018-08-30

    申请号：US15750955

    申请日：2016-08-03

    申请人： Otis Elevator Company

    发明人： Edward D. PIEDRA ,  Prasanna NAGARAJAN

    IPC分类号： B66B1/30 ,  B66B5/02 ,  B66B11/04 ,  B66B9/00

    CPC分类号： B66B1/308 ,  B66B5/027 ,  B66B9/00 ,  B66B11/043

    摘要： A permanent magnet (PM) synchronous electric motor(34) includes a plurality of phases, and a plurality of motor drives(55,58) electrically connected to the PM synchronous electric motor. Each of the motor drives is operatively connected to a corresponding one of the plurality of phases. The plurality of motor drives is configured and disposed to deliver a torque current divided equally between each of the plurality of phases and independently deliver flux current to the corresponding one of the plurality of phases. A controller(44) is operatively connected to each of the plurality of motor drives to selectively control the PM synchronous electric motor, and a rescue module(120) operatively connected to the controller, the rescue module being configured and disposed to determine a failure of one of the plurality of motor drives and control the PM synchronous electric motor in a reduced operation profile employing remaining ones of the plurality of motor drives.