Other

Aisin Seiki Kabushiki Kaisha

Nihon Inverter Corporation

Jtekt Corporation

Yasuo Yokoi

Takatoshi Sakata

Yoshinobu Nakano

Yasunobu Toyoda

A reciprocating engine type electric generator includes means for recognizing a phase difference between a phase of an alternate voltage wave generated at a stator coil following rotation of a rotor and a phase of a reference alternate voltage, and means for controlling a speed of a rotational magnetic field generated at the stator coil by controlling the alternate voltage applied to the stator coil based upon the phase difference recognized by the means for recognizing the phase difference.

Reciprocating engine type electric generator

A method for controlling starting of a synchronous motor having an excellent starting ability and capable of coming into a commutation mode in a short time is provided. An AC current having a predetermined frequency is supplied to a field coil of a synchronous motor by an inverter thereby starting the synchronous motor By detecting a terminal voltage of the field coil of the synchronous motor at the starting time, and decreasing a voltage waveform component based on the AC current supplied by the inverter from the detected voltage, the waveform is corrected so that the voltage waveform component based on the counter electromotive force can be confirmed ( ). And after integrating the corrected waveform ( ) and converting the same into a square wave ( ), a phase difference between the same ( ) and an output of a 120&deg; energization waveform generating circuit is detected to be fed back.

Method and apparatus for controlling starting of synchronous motor and electric pump for controlling working fluid of motor vehicle driving system using the apparatus

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Hirakata, Japan

Yasuo Yokoi