Electricity: single generator systems – Combined control of generator and driving means – Simultaneous control
Patent
1994-12-23
1996-08-06
Stephan, Steven L.
Electricity: single generator systems
Combined control of generator and driving means
Simultaneous control
322 15, 322 39, 290 22, 180 654, H02P 600, H02P 904
Patent
active
055437036
ABSTRACT:
A vehicular generator motor performing generator operation and motor operation is disclosed. The generator motor comprises an AC-DC converter means and a switching means. The converter means is composed of a plurality of MOSFETs and connected between each armature coil and a vehicular storage battery. Alternating current produced across the coils is converted into a direct current for charging the battery by the AC-DC converter means in generator operation mode. In motor operation mode, the DC output from the battery is converted into an alternating current for setting up a rotating magnetic field by the converter means, and the battery output is fed to the armature coils. The mode of operation of the MOSFETs is switched between these two modes by the switching means. The rotating field produces a certain phase difference with the magnetic field developed by the rotating magnetic poles. The MOSFETs are made of SiC having a smaller resistivity than that of Si. This ensures a high withstand voltage necessary during power generation. Loss caused by large current flowing in the motor operation mode is reduced. Good driving torque can be obtained.
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Kusase Shin
Mitani Kenzo
Sato Hirohide
Tokura Norihito
Umeda Atsushi
Nippondenso Co. Ltd.
Ponomarenko Nicholas
Stephan Steven L.
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