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Heat engine generator control system

United States Patent

*** EXPIRED ***
May 12, 1998
View the Complete Patent at the US Patent & Trademark Office
National Renewable Energy Laboratory - Visit the NREL Technology Transfer Website
An electrical power generation system includes a heat engine having an output member operatively coupled to the rotor of a dynamoelectric machine. System output power is controlled by varying an electrical parameter of the dynamoelectric machine. A power request signal is related to an engine speed and the electrical parameter is varied in accordance with a speed control loop. Initially, the sense of change in the electrical parameter in response to a change in the power request signal is opposite that required to effectuate a steady state output power consistent with the power request signal. Thereafter, the electrical parameter is varied to converge the output member speed to the speed known to be associated with the desired electrical output power.
Rajashekara; Kaushik (Carmel, IN), Gorti; Bhanuprasad Venkata (Towson, MD), McMullen; Steven Robert (Anderson, IN), Raibert; Robert Joseph (Fishers, IN)
General Motors Corporation (Detroit, MI)
08/ 674,057
July 1, 1996
The Government of the United States of America has rights in this invention pursuant to Subcontract 0001252 under Subcontract CPB-09728 under Subcontract ZCB-3-13032 under Prime Contract No. DEAC36-83CH10093 awarded by the U.S. Department of Energy.