Patent ID: 8823333

Claim:
A controller of a permanent magnet generator, comprising: a rotor shaft rotatably supported by a housing; a rotor fixed to the rotor shaft, and mounted with a plurality of permanent magnet members on an outer periphery side; and a stator disposed at the outside of the rotor and wound with a winding coil in three phase AC generator by star connection; wherein the winding coil of the stator for power coil and a solenoid coil of the power coil side and a solenoid coil of control side which are disposed at a position not interlinked with a magnet flux of a rotor, are connected in series and a power terminal is provided at least between the solenoid coil of power coil side and the solenoid coil of control side, and then the end of the solenoid coil of control side connected with a three phase rectifier constituted for neutral point and a switch connected with the DC terminal of the rectifier for letting flow a part of a current amount generated in the power coil to the solenoid coil of the control side for controlling current amount flowing into the solenoid coil of the control side by controlling ON/OFF of the switch by duty controlling so that a generated voltage is controlled to a voltage set in advance in response to a detection signal from a sensor for detecting the generated voltage by the power coil.