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    • 6. 发明授权
    • Converter circuit having control means with capability to short-circuit converter output
    • 转换器电路具有控制装置,具有短路转换器输出的能力
    • US06320772B1
    • 2001-11-20
    • US09573824
    • 2000-05-18
    • Yoshiaki DoyamaKaneharu YoshiokaMitsuo UedaMasanori OgawaHideo Matsushiro
    • Yoshiaki DoyamaKaneharu YoshiokaMitsuo UedaMasanori OgawaHideo Matsushiro
    • H02M542
    • H02M1/4208Y02B70/126Y02P80/112
    • A converter circuit has a reactor connectable to an AC power supply. It further has a PWM converter circuit connected to the reactor, the PWM converter circuit including a high speed diode, a rectifier diode and a switching element connected in parallel to the rectifier diode. The converter circuit further has an input current detector for detecting an input current of the PWM converter circuit, a DC voltage level detector for detecting an output voltage of the PWM converter circuit, a voltage polarity detector connected to the AC power supply, and a control device. The control device measures a variation period of the output voltage measured by the voltage level detector to judge a power supply frequency. It then controls the PWM converter circuit based on a power supply frequency judgement result, a detection result from the voltage level detector, an input current detected by the input current detector, and an output voltage detected by the DC voltage detector.
    • A转换器电路具有可连接到AC电源的电抗器。 它还具有连接到电抗器的PWM转换器电路,PWM转换器电路包括与整流二极管并联连接的高速二极管,整流二极管和开关元件。 转换器电路还具有用于检测PWM转换电路的输入电流的输入电流检测器,用于检测PWM转换电路的输出电压的直流电压电平检测器,与交流电源连接的电压极性检测器,以及控制电路 设备。 控制装置测量由电压电平检测器测量的输出电压的变化周期,以判断电源频率。 然后,根据电源频率判断结果,电压电平检测器的检测结果,输入电流检测器检测到的输入电流以及由直流电压检测器检测的输出电压来控制PWM转换电路。