1. Field of the Invention
The present invention relates to a power output apparatus and a vehicle including such a power output apparatus. Particularly, the present invention relates to a power output apparatus that can generate alternating voltage and output the same to an external alternating current load, and a vehicle including such a power output apparatus.
2. Description of the Background Art
U.S. Pat. No. 5,099,186 discloses a motor drive and recharge system that can generate alternating current power and output the same to an external source. The motor drive and recharge system includes a battery, two motors, two inverters connected to the two motors, respectively, and an input/output port connected between the neutral points of the two motors. This motor drive and recharge system can generate alternating voltage across the neutral points of the two motors to output the generated alternating voltage from the input/output port.
In such a motor drive and recharge system, there may be a case where both the alternating current power to be provided to an external alternating current load and the power for driving the motor are requested at the same time. Particularly in the case where alternating current power is output to an external alternating current load while power-running the motor, excessive current may flow to the inverter to damage it. U.S. Pat. No. 5,099,186 provides no means for appropriately obviating such current concentration in these circumstances.