Abstract：Multilevel voltage-balancing DC-DC converter (MVBDC) shows good application prospect in medium and high voltage DC conversion field. However, with the increase of output levels, the resonant current may introduce large input current ripple, which affects the converter efficiency and device life. This paper takes coupling and decoupling MVBDC as examples to analyze the relationship between MVBDC input current ripple and resonance currents at various levels, and the input current ripple suppression strategy is proposed. By controlling the phases of the resonant currents, zero ripple of the MVBDC input current can be achieved, which improves the converter efficiency. Finally, the correctness of the above theory is verified by experimental results.
倪梦涵, 杨晓峰, 王淼, 李世翔, 郑琼林. 多电平均压型直流变换器输入电流纹波抑制策略[J]. 电工技术学报, 2021, 36(16): 3354-3364.
Ni Menghan, Yang Xiaofeng, Wang Miao, Li Shixiang, Trillion Q. Zheng. Input Current Ripple Suppression Strategy of Multilevel Voltage-Balancing DC-DC Converter. Transactions of China Electrotechnical Society, 2021, 36(16): 3354-3364.
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2021, Vol. 36 
