基于三相-单相矩阵变换器的三端口变换器及其在V2G中的应用  

Three-Port Converter Based on 3-1MC and Its Application in V2G

作　　者：邓文浪[1] 刘业勇 郭有贵[1] 申翠平 Deng Wenlang;Liu Yeyong;Guo Yougui;Shen Cuiping(College of Information Engineering,Xiangtan University,Xiangtan 411105,China)

机构地区：[1]湘潭大学信息工程学院

出　　处：《电工技术学报》2019年第S02期618-628,共11页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金资助项目(51277156)

摘　　要：大规模电动汽车与电网集成情况下,大量双端口充电机的接入带来系统体积过大、结构分散、充电站面积和成本增大等问题。提出一种由三相-单相矩阵变换器(3-1MC)和全桥变换器(FBC)组成的三端口充电机拓扑,实现一机多充,降低了充电机体积和成本,增强了集成系统的紧凑性。在双极性电流空间矢量调制和移相调制基础上,研究了一种新的协调控制策略,实现端口间能量相互流动。依据变换器△等效电路,建立3-1MC输入电流与控制变量(Φ12、Φ13)的数学关系。提出一种固定3-1MC调制系数、变换器输入电流幅值由移相角Φ12和Φ13协调分配控制的闭环控制策略,确保各端口间功率独立控制,实现网侧单位功率因数运行和电池分段式充放电控制。仿真及实验结果验证了所提拓扑和控制策略的正确性和可行性。With the integration of large scale electric vehicles and power grids,a large number of dual port charger accesses can induce many disadvantages influences,including oversize of the system,dispersion of the structure,the increased area of the charging station and the cost.Accordingly,a three-port charger topology composed of three-phase to single-phase matrix converter and full bridge converter is proposed.The proposed topology can realize multi-charge for one machine,reduce the volume and cost of the charger,as well as,enhance the compactness of the integrated system.Secondly,on the basis of bipolar current space vector modulation and phase shift modulation,a new coordinated modulation strategy is studied to realize the mutual flow of energy between ports.According to the converter△equivalent circuit,the mathematical relationship between the 3-1MC input current and the control variables(Φ12,Φ13)was established.Additionally,new closed-loop control strategy,which used a fixed 3-1MC modulation factor and the input current amplitude of the converter coordinated by the phase-shift anglesΦ12 andΦ13,is proposed.Furthermore,the presented control strategy ensures the power independent control between the ports,the unit power factor operation on the net side and the battery subsection charge-discharge control is realized.Finally,the simulation and experiment results verify the correctness and feasibility of the proposed topology and control strategy.

关 键 词：三相-单相矩阵变换器 三端口变换器 协调调制策略 V2G 

分 类 号：TM46[电气工程—电器]