H - Electricity – 02 – H
Patent
H - Electricity
02
H
322/0.5
H02H 7/06 (2006.01)
Patent
CA 1198158
GENERATOR SHORTED DIODE PROTECTION SYSTEM Abstract of the Disclosure This invention relates to a shorted diode protection system for a brushless alternating current generator of the type having an energizeable exciter field winding. The system includes a circuit arrangement for sensing the voltage difference across the exciter field and pairing the voltage difference with generator load current to thereby provide an output signal that falls within a predictable range of values over a normal generator load current range. The output signal is of such a nature that it falls within a higher range of values upon the occurrence of a shorted diode. Another circuit arrangement is responsive to the output signal such that whenever the output signal exceeds a preset value over the normal load current range, an output is generated that operates to cause the interruption of the exciter field.
423859
Jackovich Melvin C.
Spencer William
Thom James B.
Riches Mckenzie & Herbert Llp
Sundstrand Corporation
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