Patent ID: 6548984
Filing Date: 2003-04-15
Classification: H02M,H02P

Abstract:
A power output device, comprising:a motor designed to be driven to rotate using multiple phase AC power; an inverter circuit supplying multiple phase AC power to the motor while switching a plurality of switching elements; a first power source connected to a positive bus bar and a negative bus bar of the inverter circuit; a second power source connected to the positive bus bar or the negative bus bar of the inverter circuit and to a neutral point of the motor; and a controller for controlling switching of the plurality of switching elements of the inverter circuit such that a ratio between positive and negative voltages relative to a potential at the neutral point of the motor, concerning respective phases of the multiple phase AC power to be supplied to the motor, become a predetermined ratio based on a voltage of the first power source and a voltage of the second power source.