POWER CONVERTER

摘要

A EV charging and discharging converter which can be connected with a house and an electric vehicle comprises: a plurality of power converting parts to which a plurality of electric vehicles can be connected; and EV side switch part provided to the plurality of power converting part on a connection side with the electric vehicle to enable one or a plurality of power converting parts to be connected with the electric vehicle, wherein The EV side switch part switches the number of the power converting parts connected to the electric vehicle in response to the change in power conversion efficiency, which responds to connection relation between the electric vehicle and the power converting part, and to charging/discharging power of the electric vehicle.