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    • 6. 发明公开
    • 전력 변환 장치
    • 电源转换器
    • KR1020080106452A
    • 2008-12-05
    • KR1020087023547
    • 2007-03-20
    • 미쓰비시덴키 가부시키가이샤
    • 오구사신이치기시다유키모리이마나카아키라세키모토야스히로하라카와마사야
    • H02M7/525H02M7/42
    • H02M7/49H02M1/36H02M2007/4835Y10T307/56Y10T307/582Y10T307/707
    • A power converter includes single-phase subinverters (2a to 2c) connected in series to each phase of a three-phase main inverter (1) using a smoothing capacitor (6) which receives power supply from a power source (11) through a converter (5) as a DC input to apply the power supply to a load (12) by the sum of the outputs of the inverter (1) and the single-phase subinverters (2a to 2c).The power converter determines a manipulated variable so that the DC voltages of smoothing capacitors (3a to 3c) which become inputs of the single-phase subinverters (2a to 2c) follow a command value, adds the manipulated variable to the command value of the output voltage of the three-phase main inverter (1), and subtracts the manipulated variable from the command value of the output voltages of the single-phase subinverters (2a to 2c). Thereby, a power shift takes place from the three-phase main inverter (1) to the smoothing capacitors (3a to 3c) of the single-phase subinverters (2a to 2c). ® KIPO & WIPO 2009
    • 电力转换器包括使用平滑电容器(6)串联连接到三相主逆变器(1)的每相的单相子变换器(2a至2c),该平滑电容器通过转换器从电源(11)接收电力供应, (5)作为直流输入,通过逆变器(1)和单相子逆变器(2a至2c)的输出之和来将电源施加到负载(12)。功率转换器确定操作变量 成为单相变换器(2a〜2c)的输入的平滑电容器(3a〜3c)的直流电压跟随指令值,将操作量与三相主逆变器的输出电压的指令值相加 (1),并从单相逆变器(2a〜2c)的输出电压的指令值中减去操作变量。 因此,从三相主逆变器(1)到单相变换器(2a〜2c)的平滑电容器(3a〜3c)发生功率偏移。 ®KIPO&WIPO 2009