H - Electricity – 02 – P
Patent
H - Electricity
02
P
H02P 9/10 (2006.01) H02J 7/16 (2006.01) H02P 9/30 (2006.01)
Patent
CA 2044444
A control apparatus for an AC generator 1 rectifier can effectively prevent a so-called dead battery even if an engine for driving the generator is stopped for an extended period of time with the key switch left on. A rectifier is connected to the generator for rectifying the output voltage thereof. A storage battery is connected to a field coil of the generator for supplying a current to the field coil, the battery being also connected through the rectifier to an armature coil of the generator so as to be charged by the generator. A voltage regulator is connected between the generator and the battery for controlling the current supply from the battery to the field coil. The voltage regulator comprises a first circuit including a switch connected in series to the field coil between an output and a ground terminal of the rectifier for controlling the current supply from the battery to the field coil, a second circuit connected between the first circuit and the rectifier for controlling the first circuit so that the output voltage of the generator is regulated to be at a first predetermined level, a third circuit connected between the first circuit and the battery for making the first circuit conductive when the output voltage of the battery falls below a second predetermined level, and a fourth circuit connected between the generator and the first circuit for making the first circuit conductive when the generator starts power generation.
Marks & Clerk
Mitsubishi Denki Kabushiki Kaisha
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