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    • 1. 发明授权
    • DC apparatus and vehicle using the same
    • 直流设备和使用其的车辆
    • US06633495B2
    • 2003-10-14
    • US10101529
    • 2002-03-20
    • Seiji IshdaToshiaki OkuyamaTetsuo KojimaKiyoshi NakataAkira Horie
    • Seiji IshdaToshiaki OkuyamaTetsuo KojimaKiyoshi NakataAkira Horie
    • H02M324
    • H02M1/143
    • The voltage applied to a power converter is detected by a voltage detector, a function generator produces a voltage proportional to this detected voltage, and a high-pass filter detects an AC component superimposed on the voltage. An adder adds a bias voltage to this AC component, and an adder adds the output from the adder and the output from the function generator. The output from the adder is compared with a triangular wave produced from a rectangular wave generator, and a switching element is controlled to make switching operation according to the compared result. When a DC current is decreased by the AC component, a resistance current Ib is increased so that the AC components superimposed on the current and resistance current can be cancelled out.
    • 施加到功率转换器的电压由电压检测器检测,功能发生器产生与该检测电压成比例的电压,高通滤波器检测叠加在电压上的AC分量。 加法器向该AC分量加上偏置电压,加法器将来自加法器的输出和来自函数发生器的输出相加。 将来自加法器的输出与由矩形波发生器产生的三角波进行比较,并且根据比较结果控制开关元件进行开关操作。 当直流电流被交流分量降低时,电阻电流Ib增加,从而可以消除叠加在电流和电阻电流上的交流分量。