基于双重移相控制的双向全桥DC省略变换器动态建模与最小回流功率控制程红.pdf

基于双重移相控制的双向全桥DC省略变换器动态建模与最小回流功率控制程红.pdf

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基于双重移相控制的双向全桥DC省略变换器动态建模与最小回流功率控制程红

2014 3 Vol.29 No. 3 29 3 TRANSACTIONS OF CHINA ELECTROTECHNICAL SOCIETY Mar. 2014 DC-DC 100083 DC-DC DC-DC TM46 Dynamic Modeling and Minimum Backflow Power Controlling of the Bi-Directional Full-Bridge DC-DC Converters Based on Dual-Phase-Shifting Control Cheng Hong Gao Qiaomei Zhu Jinbiao Yang Xiaokang Wang Cong China University of Mining Technology (Beijing) Beijing 100083 China Abstract The soft-switching conditions and the power transmission characteristics of bi- directional full-bridge DC-DC converter based on dual-phase-shifting control are analyzedThe dual-phase-shifting control strategy with the minimum backflow power under ZVS soft-switching conditions are proposed. Based on the averaged modeling method, a small-signal model with the dual-phase-shifting control of the bi-directional full-bridge DC-DC converter is presented. At last based on an experimental prototype, the effectiveness of the models and proposed control strategy are validated by experiments in both transient and steady state operations, and experimental results also verify the effectiveness of the proposed control strategy to improve the efficiency of the converter. Keywords Dual-phase-shifting control, bi-directional full-bridge DC-DC converter, soft- switching, backflow power, efficiency DC-DC DC-AC 1

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