SELF-EXCITED REACTIVE POWER COMPENSATION APPARATUS, CAPACITOR VOLTAGE CONTROL METHOD FOR SELF-EXCITED REACTIVE POWER COMPENSATION APPARATUS, POWER STORAGE APPARATUS, AND POWER STORAGE APPARATUS CONTROL METHOD

摘要

PROBLEM TO BE SOLVED: To provide a self-excited reactive power compensation apparatus comprising a plurality of single phase power converters cascaded on an AC side, and a capacitor voltage control method therefor that can stably control DC voltage values of capacitors connected to a DC side of the single phase power converters, respectively.;SOLUTION: The self-excited reactive power compensation apparatus 1 comprises an arithmetic means 11 for calculating a DC voltage average of all the capacitors disposed on the DC side of the single phase power converters, a first DC capacitor voltage control means 12 for generating a first switching command value for matching the DC voltage average to a command value, and second DC capacitor voltage control means 13-1 to 13-3 each for generating a second switching command value for matching the respective DC voltage value to the DC voltage average. Switching control in each single phase power converter based on the first switching command value and second switching command value controls the respective capacitor voltage.;COPYRIGHT: (C)2008,JPO&INPIT