Circuit arrangement for reducing electric strains in thyristor type static current converters
    11.
    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

    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.

    Booster voltage circuit for series-connected thyristors
    13.
    发明授权
    Booster voltage circuit for series-connected thyristors 失效
    用于串联连接器的升压电路

    公开(公告)号:US3536938A

    公开(公告)日:1970-10-27

    申请号:US3536938D

    申请日:1967-08-14

    Applicant: ASEA AB

    CPC classification number: H03K17/72 H02M1/088

    Abstract: In order to improve the performance of series connected thyristors these are provided with an individual electrode connected to a n-layer or a p-layer nearest the anode respectively the cathode of each thyristor. A separate DC voltage source supplies this electrode with a voltage, called booster voltage, and is connected in such a circuit that the source in the case of a chain of a number of series connected thyristors serves simultaneously two adjacent thyristors in the chain.

    Abstract translation: 为了提高串联连接的晶闸管的性能,它们设置有分别连接到每个晶闸管的阴极的n层或最靠近阳极的p层的单独电极。 单独的直流电压源为该电极提供称为升压电压的电压,并且连接在这样的电路中,在多个串联连接的晶闸管的链条的情况下,源极与链中的两个相邻晶闸管同时工作。

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