Control system for rectifier equipment

Details Control system for rectifier equipment Control system for rectifier equipment

1975-06-05

1977-05-10

Beha, Jr., William H.

321 47, H02M 108

Patent

active

040230864

ABSTRACT:
A control system for a rectifier unit for high voltage direct current transmission includes a control pulse emitter for the valves of the rectifier unit and a regulator for setting the control angle of the control pulse emitter. A signal limiter is provided on the output side of the regulator for limiting the control signal in response to an increase of the voltage of the rectifier unit towards a smaller control angle. The control system is provided with an arrangement which senses the control angle of the control pulse emitter, such arrangement being connected to the signal limiter in such a way that the upper limit of the magnitude of the control signal decreases with a decreasing control angle.

REFERENCES:
patent: 3467848 (1969-09-01), Ainsworth
patent: 3582755 (1971-06-01), Liss et al.
patent: 3648147 (1972-03-01), Leete
patent: 3764882 (1973-10-01), Reeve et al.
patent: 3767999 (1973-10-01), Ekstrom
patent: 3863134 (1975-01-01), Pollard

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