基于碳化硅器件的电力电子变压器单元设计  

Design of Power Electronic Transformer Unit Based on SiC Devices

作　　者：徐海 张雨莹 刘祥洋 XU Hai;ZHANG Yu-ying;LIU Xiang-yang(State Grid Jibei Electric Power Co.,Ltd.EHV Branch Company,Beijing 102400,China;State Grid Jibei Electric Power Co.,Ltd.Chengde Power Supply Company,Chengde 067000,China;State Key Laboratory of Reliability and Intelligence of Electrical Equipment,Hebei University of Technology,Tianjin 300130,China)

机构地区：[1]国网冀北电力有限公司超高压分公司,北京102400 [2]国网冀北电力有限公司承德供电公司,河北承德067000 [3]省部共建电工装备可靠性与智能化国家重点实验室(河北工业大学),天津300130

出　　处：《电力电子技术》2025年第2期23-26,共4页Power Electronics

基　　金：国家自然科学基金(51777053)。

摘　　要：电力电子变压器(PET)因便于模块化集成、接口灵活丰富而不失为一种变压器的良好替代方案。第3代半导体材料碳化硅(SiC)的发展为PET在中高压领域的应用拓展了道路,同时现场可编程门阵列(FPGA)的快速高精度并行处理和多通道输出为实现变换器简捷精确的控制拓展了可能。本文提出一种PET单元的设计,包括Boost PFC整流单元、对称结构的CLLLC谐振变换单元以及逆变单元。首先对各单元进行理论分析及参数设计,然后通过Matlab/Simulink搭建仿真模型进行验证,最后采用SiC MOSFET搭建CLLLC谐振变换器单元及逆变单元实物。仿真及实验结果表明该单元设计具有可行性,为采用新器件构建PET提供了一种可能。Power electronic transformer(PET)is a good alternative to transformer because of its easy modular integra-tion and flexible interface.The development of the third generation semiconductor material silicon carbide(SiC)expa-nds the way for the application of PET in the field of medium and high voltage.Meanwhile,the fast and high-preci-sion parallel processing and multi-channel output of field programmable gate array(FPGA)make it possible to control the converter simply and accurately.A design of PET unit is presented,including Boost PFC rectifier unit,symmetric CLLLC resonant converter unit and inverter unit.Firstly,the theoretical analysis and parameter design of each unit are carried out,and then the simulation model is built by Matlab/Simulink for verification.Finally,SiC MOSFET is used to build the CLLLC resonant converter and inverter unit.The simulation and experimental results show that the design of the unit is feasible,which provides a possibility for the implementation of PET based on new devices.

关 键 词：电力电子变压器 碳化硅 现场可编程门阵列 谐振变换单元 

分 类 号：TM41[电气工程—电器]