Generating system with fault detection

Details Generating system with fault detection Generating system with fault detection

1985-01-08

1987-12-01

Pellinen, A. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Generator protective circuits

322 59, 322 69, 364200, 364900, 365228, H02H 706

Patent

active

047108401

ABSTRACT:
"Doorbelling" in a generating system including a fault detecting circuit is prevented without the use of auxiliary power supply for a generator control unit. The generating system includes a permanent magnet generator (14) driving an exciter winding (18) and a relay (26) is utilized for interconnecting the two. Control of the relay (26) is exercised by a microcomputer (32) including a non-volatile memory (48) and programmed to remember the occurrence of a fault and thereafter prevent the relay (26) from cyclically opening and closing in response to power changes occurring as a result of connection and disconnection of the exciter winding (18) from the permanent magnet generator (14).

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