Electricity: single generator systems – Generator control – With armature or primary circuit control
Patent
1986-09-17
1987-09-08
Hickey, R. J.
Electricity: single generator systems
Generator control
With armature or primary circuit control
219202, 307 16, 320 64, H03J 714, B60L 102
Patent
active
046926844
ABSTRACT:
An automotive electrical system with a generator has outputs for loads requiring a high and low voltage, e.g., a heater and a battery. A field-controlled a.c. generator with three-phase output windings has a low voltage main terminal and an auxiliary terminal for high voltage loads. A step-down transformer and a first rectifier connect the windings and the main terminal while a second rectifieer directly connects the windings and the auxiliary terminal. A selector switch having a open and closed positions is connected between the main terminal and the auxiliary terminal. A voltage regulator for controlling current through the generator field is connected to the main terminal. When the selector switch is open the generator provides a dual voltage output i.e., a high voltage level at the auxiliary terminal and a low voltage level at the main terminal; in the closed position of the switch the regulator is connected to the auxiliary terminal and reduces the generator output thereof to said low voltage level while the output of the first rectifier is reduced to an ineffective level, due to the step-down effect of the transformer. The selector switch thus controls the generator output between a dual voltage output (switch open) and a low voltage output (switch closed).
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General Motors Corporation
Hickey R. J.
Jaeger Tim G.
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