High voltage converter apparatus having overvoltage protection c

Details High voltage converter apparatus having overvoltage protection c High voltage converter apparatus having overvoltage protection c

1980-12-10

1983-02-01

Eisenzopf, Reinhard J.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific voltage responsive fault sensor

361100, 361103, 363 68, H02H 320

Patent

active

043719090

ABSTRACT:
A high voltage converter apparatus having overvoltage protection circuits for thyristors is disclosed in which, in order to protect series-connected thyristors in the converter against overvoltage, the converter is stopped when the overvoltage is generated by a trouble in the primary circuit of a pulse transformer, which is included in a gate circuit for the thyristors, and one of the overvoltage protection circuits, each of which is connected between an anode and a gate of a corresponding thyristor, is prevented from being operated when the overvoltage is generated by a trouble in the secondary circuit of the pulse transformer.

REFERENCES:
patent: 3424948 (1969-01-01), Ravas
patent: 3599075 (1971-08-01), Etter et al.
patent: 3974436 (1976-08-01), Timpe
patent: 4015170 (1977-03-01), Barakaev et al.
patent: 4084206 (1978-04-01), Leowald et al.
patent: 4084221 (1978-04-01), Ogata

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