电网技术2011，Vol.35Issue(3)：124-128,5.
动态均压缓冲电路引起的晶闸管电流应力计算方法
An Approach to Calculate Current Stress Caused by Dynamic Voltage-Sharing Snubber Circuit During Thyristor Turning-on Process
仲崇山 1杨仁刚 1李成榕2
作者信息
- 1. 中国农业大学,信息与电气工程学院,北京市,海淀区,100083
- 2. 高电压与电磁兼容北京市重点实验室(华北电力大学),北京市,昌平区,102206
- 折叠
摘要
Abstract
To calculate turning-on current stress of thyristors caused by dynamic voltage-sharing snubber circuit,the defects of ideal switch model is analyzed and by means of orthogonal experiments the factors impacting on exponential voltage-source model of thyristor are researched. Utilizing the exponential voltage-source model, the formula to calculate the turning-on current stress is derived, and the simulation of the exponential voltage-source model is performed by PSCAD/EMTDC software. The research shows that ideal switch model of thyristor cannot reflect the current stress objectively and accurately, so the exponential voltage-source model of thyristor should be applied in the calculation; the key parameter in the exponential voltage-source model of thyristor is influenced by many factors, in which the voltage plays the biggest role.关键词
晶闸管/动态均压/缓冲电路/电流应力Key words
thyristor/ dynamic voltage-sharing/ snubber circuit/ current stress分类
信息技术与安全科学引用本文复制引用
仲崇山,杨仁刚,李成榕..动态均压缓冲电路引起的晶闸管电流应力计算方法[J].电网技术,2011,35(3):124-128,5.
