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    • 66. 发明授权
    • Inverter protecting apparatus
    • 逆变器保护装置
    • US06683799B2
    • 2004-01-27
    • US10115591
    • 2002-04-02
    • Hideaki KatoTakashi OgawaTetsuo NomotoYuichi Izawa
    • Hideaki KatoTakashi OgawaTetsuo NomotoYuichi Izawa
    • H02M545
    • H02H7/1225H02H1/0038
    • An apparatus for protecting an inverter against over current is constructed of a plurality of switching devices connected between the positive and negative terminals of a DC power source. The apparatus has a plurality of detecting devices that convert the currents passing through the plurality of switching devices into voltages and generate detection outputs, a plurality of amplifier circuits, a plurality of comparing devices that supply the detection outputs of the detecting devices to the amplifier circuits and generate an abnormality output if an absolute value of a detection output exceeds a predetermined value, and a protecting device that interrupts the drive of all switching devices if any of the comparing devices issues an abnormality output.
    • 用于保护逆变器免受过电流的装置由连接在直流电源的正极和负极端子之间的多个开关装置构成。 该装置具有多个检测装置,其将通过多个开关装置的电流转换为电压并产生检测输出,多个放大器电路,将检测装置的检测输出提供给放大器电路的多个比较装置 并且如果检测输出的绝对值超过预定值,则产生异常输出;以及保护装置,如果任何比较装置发出异常输出,则中断所有开关装置的驱动的保护装置。