MOTOR PARALLEL WINDING DIFFERENTIAL CURRENT PROTECTION

    公开(公告)号:US20200136550A1

    公开(公告)日:2020-04-30

    申请号:US16176882

    申请日:2018-10-31

    Abstract: An electric motor control system, including an electric motor having a first winding set including first and second parallel windings, the first and second windings operable to each current based on the combined phase current, and a differential current sensor operably coupled to the first winding and the second winding. The differential current sensor measuring a differential current flowing through the first winding and the second winding and operable to transmit a signal indicative of the differential current based on the measuring. The system also includes a motor controller connected to the electric motor, the motor controller operable to direct the combined phase current through the phase lead, receive the differential current signal, determine if the differential current flowing through the winding set exceeds a selected threshold, and identify a health status of the motor winding set as degraded if the differential current exceeds the selected threshold.

    DETECTING FAULTS IN MOTORS AND DRIVES
    14.
    发明申请
    DETECTING FAULTS IN MOTORS AND DRIVES 审中-公开
    检测电机和驱动器中的故障

    公开(公告)号:US20140300307A1

    公开(公告)日:2014-10-09

    申请号:US14200843

    申请日:2014-03-07

    Inventor: Gary L. Miles

    CPC classification number: G01R31/34 G01R31/40 H02P1/04 H02P29/00

    Abstract: Disclosed herein is a system and method for determining faults in motors and drives. The system includes a motor drive that has a DC-link coupled to a power source. A controller system is configured to measure power applied to the DC-link, integrate the power over time to yield energy consumed, and to determine energy that accumulates in operation over time. The controller is further configured to detect a fault condition when the energy that accumulates in operation is less than expected based on the energy consumed.

    Abstract translation: 这里公开了一种用于确定电动机和驱动器中的故障的系统和方法。 该系统包括具有耦合到电源的DC链路的电机驱动器。 控制器系统被配置为测量施加到DC链路的功率,随时间整合功率以产生消耗的能量,并且确定在一段时间内积累的能量。 控制器还被配置为当基于所消耗的能量在运行中累积的能量小于预期时检测故障状况。

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