一种新型电力电子变压器CHBR直流电压平衡控制策略  

A New Type of Power Electronic Transformer CHBR DC Voltage Balance Control Strategy

作　　者：杨声弟 宋平岗 郑雅芝 周鹏辉 江志强 Yang Shengdi;Song Pinggang;Zheng Yazhi;Zhou Penghui;Jiang Zhiqiang(School of Electrical and Automation Engineering,East China Jiaotong University,Nanchang 330033,China)

机构地区：[1]华东交通大学电气与自动化工程学院

出　　处：《华东交通大学学报》2020年第1期77-87,共11页Journal of East China Jiaotong University

基　　金：国家自然科学基金资助项目（51367008)

摘　　要：以无工频变压器新型电力机车牵引传动系统电力电子变压器(power electronic transformer,PET)级联H桥整流器(cascaded H-bridge rectifier,CHBR)为研究对象;建立电力电子变压器CHBR数学模型;以瞬时功率理论为基础,提出一种新型电力电子变压器CHBR直流电容电压平衡控制控制策略;同时实现非理想牵引网电压下系统单位功率因素运行。最后通过Matlab/Simulink计算机仿真软件,仿真结果表明所提控制策略的有效性和优越性。Taking the cascaded H-bridge rectifier(CHBR)of power electronic transformer(PET)in the traction drive system of the new electric locomotive without power frequency transformer as the research object,the CHBR mathematical model of power electronic transformer is established.Based on the theory of instantaneous power,a new type of power electronic transformer CHBR DC capacitor voltage balance control strategy is proposed.At the same time,the unit power factor of the system under non-ideal traction network voltage is realized.Finally,the computer simulation software is simulated by Matlab/Simulink,and the simulation results show the effectiveness and superiority of the proposed control strategy.

关 键 词：电力电子变压器 级联H桥整流器 瞬时功率理论 电容电压平衡 单位功率因数 

分 类 号：TM461[电气工程—电器]