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《Transactions of China Electrotechnical Society》 2008-01
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Control Strategy for Bi-Directional DC/DC Converter of a Novel Stand-Alone Photovoltaic Power System

Liao Zhiling1,2 Ruan Xinbo1 (1. Nanjing University of Aeronautics & Astronautics Nanjing 210016 China 2. Jiangsu University Zhenjiang 212013 China)  
A novel stand-alone photovoltaic power system is proposed in this paper. Compared with the traditional one, this system can control the battery charge or discharge effectively, protect battery and prolong its natural life. It can make use of solar energy significantly and achieve energy management for the proposed system etc. Bi-directional converter implements bi-directional energy transfer in the system, so the core of energy management is effective control bi-directional converter. The operation principle is also illustrated by the energy flow model of stand-alone photovoltaic power system, which implements bi-directional on/off selection control strategy and delay synchronizing rectifier control strategy of the bi-directional converter in detail. A 500W prototype converter is built to verify the theoretical analysis and the effectiveness of the control strategy.
【Fund】: 教育部新世纪优秀人才支持计划资助项目
【CateGory Index】: TM615
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