Reverse voltage protection for brushless excitation systems

Details Reverse voltage protection for brushless excitation systems Reverse voltage protection for brushless excitation systems

1978-10-23

1981-05-19

Miller, J. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Generator protective circuits

361 56, 361 91, 361 33, 310 68C, H02K 1900

Patent

active

042688833

ABSTRACT:
A protective circuit is provided for a brushless excitation system using a rotating rectifier assembly to supply field excitation to a synchronous generator. A thyristor is connected across the generator field winding and made conductive when the field winding voltage exceeds a preset level to shunt the field winding and protect the rectifier diodes against high reverse voltages.

REFERENCES:
patent: 3314001 (1967-04-01), Brockman
patent: 3454860 (1969-07-01), Burkett et al.
patent: 3697807 (1972-10-01), Christ
patent: 3838303 (1974-09-01), Ernst
patent: 3845369 (1974-10-01), Heyne
patent: 4079276 (1978-03-01), Kuter
patent: 4156172 (1979-05-01), Hucker et al.
patent: 4164705 (1979-08-01), Whitney et al.

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