Patent ID: 8742606

Claim:
A power converting device for a hybrid, comprising: a first accumulating unit disposed between a first inverter connected to an engine auxiliary motor and a second inverter connected to a load motor, and accumulating electric energy generated by the engine auxiliary motor; a second accumulating unit configured to accumulate the electric energy accumulated by the first accumulating unit, the electric energy generated by the engine auxiliary motor, and electric energy generated through a generating operation of the load motor; an initial charging unit disposed between the first accumulating unit and the second accumulating unit, and configured to charge the electric energy accumulated in the first accumulating unit to the second accumulating unit; a switching unit configured to switch a connection between the initial charging unit and the second accumulating unit, and a connection between the second accumulating unit and the load motor, respectively; and an initial charging control unit configured to make first and second accumulated voltages sensed at the first and second accumulating unit, respectively, the same during initial ignition, and to control the switching unit to connect the load motor and the second accumulating unit.