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

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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.

Key words： Three-level bi-directional DC-DC converter flying capacitor super capacitor control strategy

Received: 08 October 2013 Published: 25 May 2015

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TM46

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	Hu Bin
	Yang Zhongping
	Huang Xianjin
	Shi Jingjin
	Zhao Wei

Cite this article:

Hu Bin,Yang Zhongping,Huang Xianjin等. Three-Level Bi-Directional DC-DC Converter and Its Control Strategy Used for Super-Capacitor Energy Storage System[J]. Transactions of China Electrotechnical Society, 2015, 30(8): 83-89.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2015/V30/I8/83

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