Abstract：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 angles Φ12 and Φ13, 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.
邓文浪, 刘业勇, 郭有贵, 申翠平. 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[J]. 电工技术学报, 2019, 34(zk2): 618-628.
Deng Wenlang, Liu Yeyong, Guo Yougui, Shen Cuiping. Three-Port Converter Based on 3-1MC and Its Application in V2G. Transactions of China Electrotechnical Society, 2019, 34(zk2): 618-628.
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2019, Vol. 34 
