A Three-phase Integrated Power Electronic Transformer with the Capability of DC Fault Clearance
作者机构:State Key Laboratory of Advanced Transmission Technology(Global Electricity Interconnection Research Institute Co.Ltd.)Changping DistrictBeijing 102211China
出 版 物:《CSEE Journal of Power and Energy Systems》 (中国电机工程学会电力与能源系统学报(英文))
年 卷 期:2021年第7卷第4期
页 面:785-796页
核心收录:
学科分类:080801[工学-电机与电器] 0808[工学-电气工程] 0809[工学-电子科学与技术(可授工学、理学学位)] 08[工学] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程(可授工学、理学学位)] 0702[理学-物理学]
基 金:supported by National Key Research and Development Program of China(2016YFB0400505) Science and Technology Project of State Grid Corporation(SGRIGLBDTKJ676)
主 题:DC fault clearing experimental verification power electronic transformer three phase integration
摘 要:This paper presents a three-phase integrated power electronic transformer(PET)topology with the capability of DC fault clearance based on the investigation of PET *** proposed PET has three ports of high-voltage AC,high-voltage DC and low-voltage DC,which can achieve the flexible access of distributed energy resources・The power unit of the PET adopts a three-phase integrated topology,and the single-phase fluctuating power in the DC-link capacitor is reduced by a 4-port DC/DC converter,thereby reducing the capacitance of the DC-link capacitor;Meanwhile,the power unit uses the clamp double sub-module(CDSM)to allow for self-clearing of the short-circuit fault on the high-voltage DC ***,this paper verifies the proposed PET through an EMT simulation and experimental prototype.