强激光与粒子束2016，Vol.28Issue(11)：115001-1-115001-5,5.DOI:10.11884/HPLPB201628.151056
脉冲功率晶闸管反向恢复特性
Reverse recovery characteristics of pulse power thyristor
摘要
Abstract
Due to high withstand voltage,high flow capacity,stable trigger and small size,the pulse power thyristor has been widely used in pulse power system.However,the thyristor reverse recovery characteristics may cause overvoltage damage in the turn-off process of the thyristor,therefore establishing an effective thyristor model to simulate thyristor overvoltage is needed to decrease thyristor overvoltage damage probability.In this paper,pulse thyristors as the research object,with a maximum flow capacity of 1 50 kA and a withstand voltage of 5.2 kV,were tested in a pulse forming circuit as the prepositive switch.Then the experimental data were analyzed to find out the relationship between on-state current and related parameters in turn-off process such as reverse recovery charge Qr ,reverse recovery current peak value,and cut-off time.The experimental results show that the reverse recovery time decreases with the increase of the on-state current peak value I F ;Qr increases along with the augment of I F ,and when the current drop rate di/dt changes among 50~1000 A/μs,di/dt and I F has a good linear relationship,so does re-verse current peak value I RM and I F .Therefore,under the condition of large pulse current,di/dt and I F can be used as the same parameter when analyzing and deducing relationship between on-state current parameters and reverse recovery parameters.Apply-ing relations fitted from experimental data to the thyristor modeling,a thyristor model with reverse recovery process was estab-lished based on Matlab.关键词
脉冲功率晶闸管/反向恢复特性/关断过电压/Matlab/仿真模型Key words
pulse power thyristor/reverse recovery characteristics/turn-off overvoltage/Matlab/simulation model分类
信息技术与安全科学引用本文复制引用
戴玲,田书耘,金超亮,杨羊,雷洋琦,林福昌..脉冲功率晶闸管反向恢复特性[J].强激光与粒子束,2016,28(11):115001-1-115001-5,5.基金项目
国家高技术发展计划项目 （）
