Electricity: single generator systems – Combined control of generating means and load circuit
Patent
1994-02-01
1996-01-09
Stephan, Steven L.
Electricity: single generator systems
Combined control of generating means and load circuit
322 29, 320 61, H02P 904
Patent
active
054831466
ABSTRACT:
An automotive power control system which delivers a regulated voltage to a load circuit during normal operation and which delivers maximum power when the demand exceeds the alternator's ability to supply adequate current to the load. A duty-cycle- controlled DC-to-DC voltage converter reduces the alternator voltage to a level appropriate for charging the system battery and supplying low voltage loads. When the rotational speed of the alternator is adequate to generate sufficient load current, the voltage converter operates under the control of a first feedback circuit which compares the converter's output load voltage with a reference potential to generate an error signal which regulates the output voltage to a desired level. When the output voltage falls below that desired level, a speed signal indicative of the speed at which the alternator is rotating is used to generate a control signal which is applied to the switching converter to vary the alternator output voltage and maximize the power obtained from the alternator at the sensed rotational speed.
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Mohan Robert J.
Schultz Roy D.
Sirois David W.
Ford Motor Company
Godwin Paul K.
May Roger L.
Ponomarenko Nicholas
Stephan Steven L.
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