Patent ID: 7292009

Claim:
A hybrid type drive apparatus, comprising: a magnet rotor type AC generator driven by an engine; a motor driven by power supplied from the AC generator; an output control unit for controlling the quantity of power supplied to said motor from said AC generator; a switching circuit for switching each phase output of the generator; wherein the output control unit includes; a synchronous reference computing means for computing a synchronous standard, synchronous with each phase output of the generator based on the variation of the output frequency of the generator; a speed detecting means for detecting the rotation speed of the motor; and a speed target value computing means for determining a speed target value of the motor based on a difference between a predetermined target value and a rotation speed detected by the speed detecting means; a conduction angle computing means for determining a conduction angle of switching elements formed of the switching circuit for controlling the rotation speed detected by the speed detecting means to the speed target value determined by the speed target value computing means; and a means for switching an output of each phase of the generator by driving the switching elements of the switching circuit by the conduction angle according to the synchronous standard.