交直流互联电力电子变压器控制策略研究  

Research on AC/DC Interconnected Power Electronic Transformer Control Strategy

作　　者：张宸宇 刘玮[2] 袁晓冬 史明明 郑建勇[3] ZHANG Chenyu;LIU Wei;YUAN Xiaodong;SHI Mingming;ZHENG Jianyong(State Grid Jiangsu Electric Power Co.,Ltd.,Research Institute,Nanjing 211103,China;Nanjing Technician College,Nanjing 210046,China;School of Electrical Engineering,Southeast University,Nanjing 210096,China)

机构地区：[1]国网江苏省电力有限公司电力科学研究院,江苏南京211103 [2]南京技师学院,江苏南京210046 [3]东南大学电气工程学院,江苏南京210096

出　　处：《电器与能效管理技术》2018年第15期45-49,共5页Electrical & Energy Management Technology

基　　金：2017年国家重点研发计划(2017YFB0903300);2018年国网江苏省电力有限公司科技项目(J2018056)

摘　　要：针对可再生能源大规模接入后交直流电网变换环节较多的问题,采用电力电子变压器（PET）对交直流电网进行互联。在一种PET拓扑的基础上,对H桥、双向有源桥和PET整体控制策略进行了研究,给出了适用于PET的串入并出控制方式,并指出串入并出控制均压和均流控制策略的等效性。最后,基于实验室样机上对控制策略进行了验证,试验结果证明了算法的正确性和可行性。The power electronic transformer（ PET） is used to interconnect the AC and DC power grid. On the basis of PET topology,this paper studied the overall control strategy of H bridge,bi-directional active bridge and PET,and gave the control mode of string in and parallel out suitable for PET,and pointed out the equivalence of the control strategy of the voltage sharing and the control of the current sharing. Finally,based on the prototype of the laboratory,the control strategy was verified. The experimental results prove the correctness and feasibility of the algorithm.

关 键 词：交直流互联 电力电子变压器 H桥 双向有源桥 控制策略 

分 类 号：TM61[电气工程—电力系统及自动化]