摘要
为了研究反向恢复期间重复脉冲电压下晶闸管反向恢复性能的变化规律,建立了脉冲电压下晶闸管反向恢复性能退化特性实验平台,实验研究了脉冲电压波形和脉冲施加时刻参数对晶闸管反向恢复过程的影响。结果表明,反向恢复期内经过2500次脉冲电压冲击后,晶闸管反向恢复性能明显改变,主要表现有:反向恢复时间缩短,反向恢复电荷减少,恢复软度降低;脉冲电压幅度越大,脉冲延迟越短,脉冲电压对反向恢复性能的影响越大;晶闸管反向恢复性能参数的变化与载流子寿命的变化密切相关,即反向恢复期内在脉冲电压重复作用下,载流子复合率增加,其寿命缩短,导致晶闸管反向恢复性能退化。
To study changes of reverse recovery performance of the thyristor under repeated impulse voltage during reverse recovery period,this paper builds an experiment platform for degradation characteristics of reverse recovery performance under impulse voltage so as to study influences of impulse voltage waveform and parameters at the moment of impulse applying on reverse recovery process of the thyristor.The results indicate reverse recovery performance of the thyristor has changed obviously after 2500 times impulse voltage shock during reverse recovery period.The reverse recovery time shortens,the reverse recovery charges reduce and recovery softness decreases.With increase of impulse voltage amplitude,impulse delay shortens and impact of impulse voltage on reverse recovery performance is larger.In addition,changes of reverse recovery performance parameters are closely related to change of lifetime of the carrier,which means under the action of impulse during reverse recovery period,recombination rate of the carrier increases and lifetime of the carrier shortens,resulting degradation of reverse recovery performance of the thyristor.
作者
岳珂
庞磊
陈炫宇
叶明天
张乔根
陶风波
YUE Ke;PANG Lei;CHEN Xuanyu;YE Mingtian;ZHANG Qiaogen;TAO Fengbo(Xi an Power Supply Company,State Grid Shaanxi Electric Power Company,Xi an,Shaanxi 710032,China;State Key Laboratory of Electrical Insulation and Power Equipment,Xi an Jiaotong University,Xi an,Shaanxi 710049,China;Electric Power Research Institute,State Grid Jiangsu Electric Power Co.,Ltd.,Nanjing,Jiangsu 211103,China)
出处
《广东电力》
2019年第11期129-135,共7页
Guangdong Electric Power
基金
国家电网有限公司科技项目(SGJSDK00KJJS1800292)
国家自然科学基金项目(51307132)
关键词
暂态特性
晶闸管
反向恢复
冲击电压
性能退化
transient characteristic
thyristor
reverse recovery
impulse voltage
performance degradation
作者简介
通信作者:岳珂(1989),女,陕西咸阳人,工程师,工学博士,主要从事高压直流输电相关试验及保护技术方面的研究工作,E-mail:yueke_xian@163.com;庞磊(1982),男,山西忻州人,副教授,工学博士,主要研究方向为电力电子类高压电力装备试验检测及状态评估,E-mail:panglei_2013@mail.xjtu.edu.cn;陈炫宇(1995),男,陕西西安人,在读硕士研究生,主要研究方向为直流输电高压晶闸管保护及试验技术,E-mail:331923870@qq.com
