Ultracap-based solutions for ride-through of synchronous machine drives

    公开(公告)号:US10374543B2

    公开(公告)日:2019-08-06

    申请号:US14839970

    申请日:2015-08-29

    Abstract: A synchronous machine system comprising a synchronous motor including a stator, stator winding, rotor, and field winding; an AC power supply circuit structured to transmit current to or from the stator winding of the synchronous motor at a controlled frequency and transmit current to or from a power source at a controlled frequency; a DC exciter unit structured to receive power from a power source, convert the received power to DC power at a desired voltage, and supply the converted power across a DC bus to the field winding of the synchronous motor; and an energy storage circuit coupled to the DC bus of the DC exciter unit having at least one ultracapacitor, and structured to receive power from a power source, to charge the ultracapacitor, and to provide power to the field winding of the synchronous motor following a power failure.

    CONTROL OF ELECTRICALLY EXCITED SYNCHRONOUS MACHINES DRIVES FOR RIDE THROUGH AND CONTROLLED BRAKING OPERATIONS
    3.
    发明申请
    CONTROL OF ELECTRICALLY EXCITED SYNCHRONOUS MACHINES DRIVES FOR RIDE THROUGH AND CONTROLLED BRAKING OPERATIONS 有权
    通过控制制动操作控制电动同步电机驱动

    公开(公告)号:US20170063277A1

    公开(公告)日:2017-03-02

    申请号:US14837620

    申请日:2015-08-27

    Abstract: One exemplary embodiment is method of operating an electrically excited synchronous machine (EESM) system. The system includes a converter operatively coupled with one or more stator windings, an exciter operatively coupled with one or more field windings, a controller operatively coupled with the converter and the exciter, and a power supply operatively coupled with the converter and the exciter. The controller determines whether a power supply fault condition exists and whether EESM system is operating in a motor mode or a generator mode. If the power supply fault condition exists and the EESM system is operating in the motor mode, entering one of a motor ride through control mode and a motor controlled braking control mode If the power supply fault condition exists and the EESM system is operating in the generator mode, entering one of a generator ride through control mode and a generator controlled braking control mode.

    Abstract translation: 一个示例性实施例是操作电激励同步电机(EESM)系统的方法。 该系统包括可操作地与一个或多个定子绕组耦合的转换器,与一个或多个励磁绕组可操作耦合的激励器,与转换器和激励器可操作耦合的控制器以及与转换器和激励器可操作耦合的电源。 控制器确定电源故障条件是否存在,以及EESM系统是否在电机模式或发电机模式下运行。 如果电源故障条件存在,EESM系统在电机模式下运行,则进入电机之一,通过控制模式和电机控制制动控制模式。如果存在电源故障条件,并且EESM系统在发电机中运行 模式,通过控制模式和发电机控制的制动控制模式进入发电机之一。

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