POWER CONVERSION APPARATUS

摘要

A maximum single-phase inverter 3B-INV that uses as its DC power source a DC voltage V 3B boosted from a solar light voltage by a boosting chopper circuit (3), is arranged at the center, and single-phase inverters 2B-INV and 1B-INV that use DC power sources V 1B and V 2B supplied from this maximum DC power source V 3B as their inputs are arranged on both sides of the maximum single-phase inverter 3B-INV. AC sides of the respective single-phase inverters are connected in series. A power conditioner is thus configured to provide an output voltage by using the sum of the generated voltages of the respective single-phase inverters. Chopper circuits (7a) and (7b) are connected between the maximum DC power source V 3B and the DC power sources V 1B and V 2B , and power is supplied to the DC power sources V 1B and V 2B from the maximum DC power source V 3B via switching devices in the single-phase inverters.