ELECTRIC POWER SYSTEM

Abstract

The electric power system includes a first power storage device, a second power storage device where a second negative terminal is connected to the negative-side line, a series relay provided in a series line connecting the first negative terminal of the first power storage device and the second positive terminal of the second power storage device, a power storage system having a parallel relay provided in a parallel line connecting the first negative terminal and the negative-side line, a motor, first and second inverter units, and a changeover switch provided between the first and second inverter units of the positive-side line. The first inverter unit includes a three-level inverter having a first upper arm and a second lower arm of a third phase, and an intermediate potential switch of first, second capacitor, and three phases. The second positive terminal is connected to connection points of the first and second capacitors.

CPC Classifications