Cycloconverter controlled rectifier protection circuit

Details Cycloconverter controlled rectifier protection circuit Cycloconverter controlled rectifier protection circuit

1974-12-16

1976-03-02

Pellinen, A. D.

321 13, 321 66, H02M 118, H02M 530

Patent

active

039420922

ABSTRACT:
In a cycloconverter system, a circuit for maintaining the gate drive signal on the gate of each controlled rectifier when the gate drive command for the controlled rectifier terminates prior to the time when the controlled rectifier would normally become conductive. Voltages across the controlled rectifier are monitored by voltage sensors. Logic circuits are provided which are responsive to the outputs of the voltage sensors and the presence of gate drive commands for maintaining a gate drive signal on the gate of a controlled rectifier when the gate drive command for the controlled rectifier terminates after the controlled rectifier reverse blocks and until it becomes conductive.

REFERENCES:
patent: 3539900 (1970-11-01), Chausse et al.
patent: 3681676 (1972-08-01), Bourbeau
patent: 3852656 (1974-12-01), Bourbeau
patent: 3882371 (1975-05-01), Shimer et al.

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