三相级联H桥型电力电子变压器电容值设计方法  

Design method of capacitance value of three-phase cascaded H-bridge power electronic transformer

作　　者：王哲[1,2,3] 李耀华 李子欣[1,2,3] 赵聪 高范强[1,2,3] 张航 王平[1,2,3] 张宸宇 WANG Zhe;LI Yaohua;LI Zixin;ZHAO Cong;GAO Fanqiang;ZHANG Hang;WANG Ping;ZHANG Chenyu(Key Laboratory of Power Electronics and Electric,Chinese Academy of Sciences,Beijing 100190,China;Institute of Electrical Engineering,Chinese Academy of Sciences,Beijing 100190,China;College of Electronic Electrical and Communication Engineering,University of Chinese Academy of Sciences,Beijing 100049,China;State Grid Jiangsu Electric Power Company Research Institute,Nanjing 211103,China)

机构地区：[1]中国科学院电力电子与电气驱动重点实验室,北京100190 [2]中国科学院电工研究所,北京100190 [3]中国科学院大学电子电气与通信工程学院,北京100049 [4]国网江苏省电力公司电力科学研究院,江苏南京211103

出　　处：《电力自动化设备》2020年第1期219-224,共6页Electric Power Automation Equipment

基　　金：国家重点研发计划项目(2017YFB0903300)~~

摘　　要：针对三相级联H桥型电力电子变压器(PET),分析了输入侧瞬时功率波动特性,建立了其直流侧电容电压及中间级高频变压器原、副边电流的时域解析模型,并基于该模型提出一种PET电容值设计方法。基于MATLAB/Simulink仿真平台搭建三相级联H桥型PET仿真模型,并在功率模块测试平台进行实验验证。仿真及实验结果表明该解析模型可以准确地描述电容电压及变压器高频电流的波动特性,进而为主电路参数设计与控制系统设计提供研究基础。According to the three-phase cascaded H-bridge PET(Power Electronic Transformer),the instantaneous power fluctuation characteristics of its input side are analyzed,and the time domain analytical models of its DC side capacitor voltage and the primary and secondary side current of the intermediate highfrequency transformer are built.Based on the models,a design method of PET capacitor value is proposed.Based on the MATLAB/Simulink,three-phase cascaded H-bridge PET simulation model is built and verified in the power module test platform.Both simulative results and experimental results show that the model can accurately describe the fluctuation characteristic of the capacitor voltage and the high-frequency current of PET,and provide a research foundation for the design of the circuit parameters and control system.

关 键 词：级联H桥 电力电子变压器 瞬时功率波动特性 时域解析模型 电容值设计方法 

分 类 号：TM41[电气工程—电器] TM46