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1.发明授权Circuit arrangement for reducing electric strains in thyristor type static current converters 失效用于减少电流型静态电流转换器中电气应变的电路布置
公开(公告)号：US3593039A
公开(公告)日：1971-07-13
申请号：US3593039D
申请日：1967-11-16
Applicant: ASEA AB
Inventor： BOKSJO CARL INGVAR , SVEDBERG PER GUSTAV JOHANNES
CPC classification number: H02M1/088
Abstract: In a high tension thyristor current converter comprising a plurality of similarly designed sections in series with each other, each section including at least one main thyristor, a voltage divider and a control device, each such section is shunted by an auxiliary thyristor circuit dimensioned in such a way that the electric strains at the time of switching on and off the thyristors are reduced. In this case it is possible to delay the ignition or the main thyristor with respect to the ignition of the auxiliary thyristor, until the voltage across the main thyristor has declined to a value not endangering the ignition of said thyristor, and/or to delay the extinction of the auxiliary thyristor relative to the extinction of the main thyristor, so that the recovery time of the main thyristor will be determined by said auxiliary thyristor.
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