基于平均值等效的IGCT-MMC损耗特性分析与计算  

Analysis and Calculation of IGCT-MMC Loss Characteristics Based on Mean Equivalent

作　　者：郭明珠 白睿航 唐博进 赵彪[2] 周兴达 余占清[2] 曾嵘[2] GUO Mingzhu;BAI Ruihang;TANG Bojin;ZHAO Biao;ZHOU Xingda;YU Zhanqing;ZENG Rong(Institute of Science and Technology,China Three Gorges Corporation,Beijing 100038,China;State Key Laboratory of Control and Simulation of Power System and Generation Equipments,Tsinghua University,Beijing 100084,China)

机构地区：[1]中国长江三峡集团有限公司科学技术研究院,北京100038 [2]电力系统及发电设备控制和仿真国家重点实验室(清华大学),北京100084

出　　处：《南方电网技术》2021年第3期8-14,共7页Southern Power System Technology

基　　金：中国长江三峡集团有限公司科研项目(WWKY-2019-0213);清华大学自主科研计划资助(2019Z08QCX17)。

摘　　要：集成门极换流晶闸管(integrated gate commutated thyristor,IGCT)具有通态损耗低、通流能力强等优势,且具有进一步发展的潜力,适合于模块化多电平变换器(modular multilevel converter,MMC)的应用场合。本文描述了平均值等效的方法应用于基于IGCT器件的MMC的损耗评估原理与计算方法。尤其是针对IGCT器件、缓冲电路和取能电源等部分损耗给出了详细的分析。在此基础上,给出了算例,并与模拟实际投切过程进行仿真计算的结果进行了对比,验证了所述方法的准确性。Integrated gate commutated thyristor(IGCT)has the advantages of low on-state loss and high current-through capacity,and still has the potential for further development.It is suitable for the application of modular multilevel converter(MMC).This paper describes the principle and calculation of the mean equivalent method applied to loss assessment of the IGCT based MMC sub-module.Especially,losses of IGCT device,buffer circuit and energy extraction power supply are analyzed in detail.An example is given and is compared with that of simulated calculation.The accuracy of mean equivalent method is verified.

关 键 词：柔性直流输电 集成门极换流晶闸管 模块化多电平变换器 平均值等效 损耗分析 

分 类 号：TM721.1[电气工程—电力系统及自动化]