大功率晶闸管开通过程均压保护研究  

Research on voltage equalization protection during turn-on of high-power thyristor

作　　者：张鹏 曹鹏飞 王涛 詹鸿博 Zhang Peng;Cao Pengfei;Wang Tao;Zhan Hongbo(Wuhan Institute of Marine Electric Propulsion,Wuhan 430064,China;Wuhan Changhai Electrical Technology De-velopment Co.,Ltd.,Wuhan 430064,China)

机构地区：[1]武汉船用电力推进装置研究所,武汉430064 [2]武汉长海电气科技开发有限公司,武汉430064

出　　处：《船电技术》2022年第11期49-51,共3页Marine Electric & Electronic Engineering

摘　　要：针对脉冲工况下,大功率晶闸管开通过程中面临的动态电压分布不均问题,首先从理论上分析了动态电压分配的函数表达式,总结了R_(s)C_(s)缓冲保护参数的选取依据。随后,搭建晶闸管开通过程中的动态模型,仿真得出了不同缓冲保护参数下,器件两端的电压波形,验证了理论分析的正确性。最终,提出了采用RC缓冲+MOV的保护方案,并对保护原理进行了理论分析。Aiming at the problem of uneven dynamic voltage distribution during the turn-on process of high-power thyristors under pulse conditions,the function expression of dynamic voltage distribution is theoretically analyzed,and the basis for selecting RsCs snubber protection parameters is summarized.Then,the dynamic model of the thyristor is built,and the voltage waveforms across the device under different buffer protection parameters are obtained by simulation,which verifies the correctness of the theoretical analysis.Finally,a protection scheme using RC buffer+MOV is proposed,and the protection principle is theoretically analyzed.

关 键 词：晶闸管 脉冲 开通 均压 

分 类 号：TN34[电子电信—物理电子学]