并联晶闸管中的电流分布——大电流互感器-整流器中5个实际案例的对比分析

Conference Record of the 2004 IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting. Pub Date : 2004-11-01 DOI:10.1109/IAS.2004.1348448

R. Fuentes

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引用次数: 8

摘要

众所周知，在大电流互感器-整流器中，有必要为每个二次相并联几个晶闸管。并联晶闸管之间的电流分布很大程度上取决于整流器机械结构的对称性。在理想情况下，一个晶闸管的电流并不总是由次级总电流除以并联晶闸管的数目而得到。本文对5种不同的实际电流分布情况进行了比较分析。这个实际案例对应于6个脉冲控制整流器在不同的铜厂测量。最后给出了结论和设计建议。

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Current distribution in paralleled thyristors - a comparative analysis of 5 real cases in high current transformer - rectifiers

It is very well known that in high current transformer-rectifiers it is necessary to connect several thyristors in parallel for each secondary phase. Current distribution between thyristors in parallel strongly depends on the symmetry of the mechanical structure of rectifier. The current in one thyristor not always is given by total current of secondary phase divided by the number of thyristors in parallel, as it is in ideal cases. In this paper a comparative analysis of 5 different real cases of current distribution is presented. This real cases correspond to 6 pulses controlled rectifiers measured indifferent copper plants. Finally conclusions and design recommendations are given.

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Conference Record of the 2004 IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting.

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