大容量脉冲电容器放电起始阶段晶闸管电压高频振荡机理研究  

Study on the High Frequency Voltage Oscillation of Thyristor During the Initial Stage of Pulse Capacitor Discharge

作　　者：朱博峰[1] 鲁军勇[1] 张晓[1] 戴宇峰[1] 王鑫 Zhu Bofeng;Lu Junyong;Zhang Xiao;Dai Yufeng;Wang Xin(National Key Laboratory of Science and Technology on Vessel Integrated Power System Naval University of Engineering,Wuhan 430033 China)

机构地区：[1]海军工程大学舰船综合电力技术国防科技重点实验室,武汉430033

出　　处：《电工技术学报》2020年第6期1272-1278,共7页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金(51522706,51407191,51607187);国家重点基础研究发展计划(973计划)(613262)资助项目。

摘　　要：电磁轨道炮用脉冲功率电源模块多采用耐高压、耐大脉冲电流冲击的晶闸管作为脉冲电容器的放电主开关,以尽可能地减少体积,提高储能密度。现有文献针对晶闸管的动态开通过程已进行过大量研究,主要致力于提高晶闸管电路模型的准确性。该文针对一种由脉冲电容器放电主回路高频谐振引起的晶闸管开通过程电压振荡现象,首先根据真实的实验电路结构研究振荡产生的机理;进而通过电路仿真验证理论分析的正确性;最后提出消除电压振荡的方案并完成实验验证。相关研究结论对优化电磁轨道炮用脉冲功率源具有一定的现实意义。For pulsed power supply module of an electromagnetic railgun system,thyristors that have the excellent ability to withstand high voltage and high pulse current is always selected as the pulse discharging switch to reduce the volume and improve energy storage density.Existing literatures have extensively researched the dynamic opening process of thyristor and improved the accuracy of thyristor equivalent circuit model.This paper studied a special voltage oscillation phenomenon caused by high frequency resonance in main circuit during pulse capacitor discharge.Firstly,the mechanism of the voltage oscillation was studied according to the configuration of the main circuit.Further,circuit simulation was carried out to verify the correctness of the theoretical analysis above.Finally,a feasible method was proposed to eliminate the voltage oscillation.The related conclusions in this paper have certain practical significance for optimizing the pulsed power module used in electromagnetic railgun system.

关 键 词：脉冲电容器 脉冲电源模块 电磁轨道炮 晶闸管 动态开通 电压谐振 

分 类 号：TM46[电气工程—电器]