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Power conversion apparatus and control method for power conversion apparatus when an instantaneous voltage drop has occurred in a power system
Power conversion apparatus and control method for power conversion apparatus when an instantaneous voltage drop has occurred in a power system
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机译:当电力系统中发生瞬时电压降时的电力转换装置和电力转换装置的控制方法
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摘要
A power conversion apparatus includes a DC/DC converter which transforms DC power input from a dispersion type power source into DC power, a capacitor which holds the DC power supplied from the DC/DC converter, an inverter which converts the DC power held by the capacitor to AC power and outputs the AC power to a power system, and a controller which controls, when the power system recovers from an instantaneous voltage drop, the inverter to lower an AC current output from the inverter to be smaller than a value before occurrence of the instantaneous voltage drop by an amount increasing with an increase in the amount of voltage drop during the instantaneous voltage drop and to raise the AC current from the inverter after the lowering.
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