Patent ID: 7891451

Claim:
A power controller capable of executing either one of charging of a power storage device mounted on a vehicle from an AC power supply outside of the vehicle and power feed from said power storage device to said AC power supply comprising: a first AC rotating electric machine including a star-connected first poly-phase winding as a stator winding; a second AC rotating electric machine including a star-connected second poly-phase winding as a stator winding; a first inverter connected to said first poly-phase winding and performing power conversion between said first AC rotating electric machine and said power storage device; a second inverter connected to said second poly-phase winding and performing power conversion between said second AC rotating electric machine and said power storage device; a pair of power lines connected to a first neutral point of said first poly-phase winding and a second neutral point of said second poly-phase winding, and configured to allow exchange of electric power between said AC power supply and said first and second neutral points; a first voltage detecting device detecting a voltage of said AC power supply; a command current generating unit detecting an effective value and phase of said AC power supply based on a detected voltage value from said first voltage detecting device, and based on the detected effective value and the phase and on a charge/discharge power command value for said power storage device, generating a command value of a current caused to flow to said pair of power lines having its phase adjusted with respect to the voltage of said AC power supply; and an inverter control unit controlling zero-phase voltage of at least one of said first and second inverters, based on the command current value generated by said command current generating unit.