面向HVDC应用的逆阻型IGCT关断特性研究  

Switch-off Characteristic Research of Reverse Blocking IGCT for HVDC Application

作　　者：黄华[1] 黄勇 申笑林 刘磊[1] HUANG Hua;HUANG Yong;SHEN Xiao-lin;LIU Lei(NR Electric Co.,Ltd.,Nanjing 211102,China;不详)

机构地区：[1]南京南瑞继保电气有限公司,江苏南京211102 [2]国家电网有限公司,北京100031 [3]国网经济技术研究院有限公司,北京102209

出　　处：《电力电子技术》2024年第10期122-124,共3页Power Electronics

基　　金：国家电网公司科技项目(5108-202218280A-2-115-XG)。

摘　　要：为研究逆阻集成门极换流晶闸管(RB-IGCT)的电流关断特性,指导RB-IGCT换流阀设计,此处搭建了RB-IGCT的电流关断测试电路,对其电流关断特性进行了实测,并采用双指数函数对电流关断特性进行数学拟合。最后基于拟合到的关断电流数学模型,在PSCAD/EMTDC中搭建了IGCT电流关断的器件级功能模型进行仿真测试,仿真和试验结果的一致性表明基于双指数函数的IGCT电流关断模型的准确性,为后续工程应用时IGCT关断电压应力研究以及RB-IGCT阀均压设计提供了快速有效的仿真手段。In order to study the current switch-off characteristics of reverse block ingintegrated gate-commutated th-yristor(RB-IGCT)and guide the design of RB-IGCT converter valves,the current switch-off testing circuit of RB-IGCT is built to test its current switching characteristics and a double exponential function is used to mathematically fit the current switch-off characteristic.Finally,based on the fitted mathematical model of switch-off current,a device-level functional model of IGCT current switch-off is built in PSCAD/EMTDC,the consistency between simulation and exper-imental results indicates the accuracy of the IGCT current switch-off model based on the double exponential function which provides a fast and effective simulation method for the study of IGCT switch-off voltage stress and RB-IGCT valve's voltage sharing design in subsequent engineering applications.

关 键 词：逆阻集成门极换流晶闸管 关断特性 双指数函数 

分 类 号：TN3[电子电信—物理电子学]