Abstract：The switching device voltage stress of traditional two-level DC-DC converter is high, and the output current ripple is big. Used a three-level bi-directional DC-DC converter to control super- capacitor energy flow, which improves the super-capacitor charge/discharge efficiency and input voltage level. Analyzed the three-level bi-directional DC-DC converter working principle and control strategy, a simulation platform is built by Matlab/Simulink, which verify three-level bi-directional DC-DC converter topology advantages, meanwhile realizes the control of the DC net voltage, flying capacitor voltage and super capacitor charge/discharge current; finally, the prototype experiment illustrates the rationality and effectiveness of the converter and its control strategy.
胡斌, 杨中平, 黄先进, 史京金, 赵炜. 用于超级电容储能系统的三电平双向直流变换器及其控制[J]. 电工技术学报, 2015, 30(8): 83-89.
Hu Bin, Yang Zhongping, Huang Xianjin, Shi Jingjin, Zhao Wei. Three-Level Bi-Directional DC-DC Converter and Its Control Strategy Used for Super-Capacitor Energy Storage System. Transactions of China Electrotechnical Society, 2015, 30(8): 83-89.
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