Transactions of China Electrotechnical Society  2020, Vol. 35 Issue (8): 1679-1689    DOI: 10.19595/j.cnki.1000-6753.tces.190241
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Global Minimum Peak Current Control of the Three Level Isolated Half-Bridge Bi-Directional DC-DC Converters with PWM-Phase-Shifting Control
Yang Chao1,2, Xu Haiping2, Yuan Zhibao1,2, Xu Zhiqiang3
1. University of Chinese Academy of Sciences Beijing 100049 China;
2. Key Laboratory of Power Electronics and Electric Drive Institute of Electrical Engineering Chinese Academy of Sciences Beijing 100190 China;
3. Green Energy Technology of China (Beijing) Co. Ltd Beijing 102200 China

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Abstract  This paper proposed a dual-PWM-phase-shift (DPWMPS) control method for three-level half-bridge isolated bidirectional DC-DC converter. Based on the analysis of the working principle of the method and the relative position of the voltages on both sides of the transformer, 12 operating modes of the system are concluded, and the power transmission characteristics of each mode are deduced. On this basis, a method of inductance minimum peak current control is proposed. This method achieves the global optimization of inductance peak current under the condition of voltage ratio m≤1. Finally, an experimental platform is built and the experimental results show that the algorithm is correct and effective.
Key wordsDual-PWM-phase-shift      three-level half-bridge isolated bidirectional DC-DC converter      working modes      minimum peak current control     
Received: 07 March 2019      Published: 24 April 2020
PACS: TM46  
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Yang Chao
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Yang Chao,Xu Haiping,Yuan Zhibao等. Global Minimum Peak Current Control of the Three Level Isolated Half-Bridge Bi-Directional DC-DC Converters with PWM-Phase-Shifting Control[J]. Transactions of China Electrotechnical Society, 2020, 35(8): 1679-1689.
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