Electrical control apparatus and methods

Details Electrical control apparatus and methods Electrical control apparatus and methods

H - Electricity

02

P

322/14.1

H02P 9/10 (2006.01) G05F 1/12 (2006.01)

Patent

CA 1231756

ELECTRICAL CONTROL APPARATUS AND METHODS Abstract of the Disclosure Apparatus for use in an electrical power generat- ing system including a generator for supplying an A.C. output voltage to a load on a set of lines and a circuit responsive to the A.C. output voltage for producing a regu- lating voltage, the generator having a winding the D.C. en- ergization of which controls the A.C. output voltage. The apparatus controls the energization of the winding and in- cludes a switching circuit adapted to be connected across a resistance and which when rendered conductive bypasses the resistance to couple the voltage regulating circuit to the winding with negligible loss of energy. The switching circuit is combined with a circuit that produces a signal when an increase in the A.C. output voltage exceeding a preselected parameter occurs, and with another circuit that renders the switching circuit nonconductive in response to the signal thereby causing the resistance to consume energy from the winding. Methods of operation of the apparatus are also described.

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