Control logic for a phase controlled rectifier system

Details Control logic for a phase controlled rectifier system Control logic for a phase controlled rectifier system

1977-09-26

1979-05-01

Shoop, William M.

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

318778, 318345G, H02M 7155

Patent

active

041527585

ABSTRACT:
Apparatus for providing firing signals to a phase controlled rectifier circuit at a time at which valves in the rectifier circuit are forward biased without the need for providing continuous firing signals. The apparatus monitors the voltage applied across the rectifier valves and provides a signal when a valve is forward biased. This signal is applid to a gating circuit which determines whether a normal phase control firing command was initiated prior to the time the valve became forward biased. If such a command was initiated, the gating circuit passes the signal to a valve firing circuit which provides firing signals to the rectifier circuit. If the firing command was not previously initiated, the signal is inhibited and firing signals are subsequently applied to the rectifier circuit upon receipt of a firing command.

REFERENCES:
patent: 3273043 (1966-09-01), Clarke et al.
patent: 3564365 (1971-02-01), Zelina
patent: 3593088 (1971-07-01), Pantelakis et al.
patent: 4044284 (1977-08-01), Plunkett et al.

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