Patent ID: 9748866
Date: 2017-08-29
CPC Classifications: H02J,H02M

Claim:
1. A power conversion apparatus comprising: 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, immediately after the power system recovers to a voltage before occurrence of an instantaneous voltage drop from the instantaneous voltage drop, the inverter to output an AC current of which output is larger than zero and smaller than a value before occurrence of the instantaneous voltage drop, wherein the controller controls the DC/DC converter during the instantaneous voltage drop to increase a voltage of the capacitor by an amount proportional to the drop in voltage during the instantaneous voltage drop.