Predictive Landing Failsafe
    1.
    发明申请
    Predictive Landing Failsafe 审中-公开
    预测着陆失效

    公开(公告)号:US20150263650A1

    公开(公告)日:2015-09-17

    申请号:US14656930

    申请日:2015-03-13

    摘要: A predictive landing failsafe system is adapted to slow or stop a permanent magnet AC motor in response to a selected condition, such as a power outage. In some embodiments, the predictive landing failsafe system may short two or more terminals of the AC motor in response to the selected condition. In some embodiments, one or more resistors may be coupled between the two or more terminals, the resistors lowering the short-circuit current and thus making a more smooth stop for the AC motor. In some embodiments, the AC motor may be used in a drawworks.

    摘要翻译: 预测着陆故障保护系统适于响应于所选择的状况(例如断电)来减慢或停止永磁式交流电动机。 在一些实施例中,预测着陆故障保护系统可以响应于所选择的状态而短路AC电动机的两个或更多个终端。 在一些实施例中,一个或多个电阻器可以耦合在两个或更多个端子之间,电阻器降低短路电流,从而使得AC电动机更平稳地停止。 在一些实施例中,AC马达可用于绞车中。