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G05F 3/02 (2006.01) B60S 1/02 (2006.01) H02J 7/14 (2006.01) H02P 9/30 (2006.01) B60R 16/02 (2006.01)
Patent
CA 2003191
ABSTRACT OF THE DISCLOSURE This specification discloses an electric power supply system for an automobile having a load which needs a higher voltage than the normal battery voltage. The electric power supply system of the present inven- tion includes: a multi-phase AC generator having an armature winding, a field winding, a first rectifier for rectifying a multi-phase AC output of the armature winding, and a voltage regulation circuit for control- ling a current in the field winding in accordance with a control signal to regulate an output voltage of the first rectifier; a battery charged by a DC output voltage of the first rectifier; a low-voltage load to be powered by the battery; a multi-phase transformer including a primary winding connected to a multi-phase AC output of the armature winding and a secondary winding for inducing a secondary multi-phase voltage higher than the voltage in the primary winding, the primary and secondary windings being electrically insulated from each other; a second rectifier for rectifying the multi-phase secondary voltage from the multi-phase transformer; and a high-voltage load to be powered by a DC output of the second rectifier.
Futami Tohru
Mashino Keiichi
Nakajima Yuji
Tezuka Shigeki
Futami Tohru
Hitachi Ltd.
Kirby Eades Gale Baker
Mashino Keiichi
Nakajima Yuji
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