High voltage converter apparatus having overvoltage...

Details High voltage converter apparatus having overvoltage... High voltage converter apparatus having overvoltage...

H - Electricity

02

H

321/91

H02H 7/125 (2006.01) H02H 7/12 (2006.01) H02M 1/096 (2006.01)

Patent

CA 1154087

ABSTRACT OF THE DISCLOSURE 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 trans- former, 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.

366431

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