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Modeling and design of the LLC resonant converter used in solar array simulator

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5 Author(s)
Chien-Hsuan Chang ; Dept. of Electr. Eng., I-Shou Univ., Kaohsiung, Taiwan ; Hung-Liang Cheng ; En-chih Chang ; Chun-An Cheng
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An LLC resonant converter has been used to provide the electrical characteristics of solar arrays. In this paper, its small signal model is derived based on the extended describing function concept. The corresponding frequency response can be easily obtained from IsSpice simulation of the equivalent circuit model. Furthermore, a closed-loop compensation controller is designed according to the derived small-signal model. The experimental measurements have really proved that the stable and fast transient response can be achieved in the system. The system output voltage and current can be adjusted simultaneously to match the electrical characteristics of photovoltaic output.

Published in:

Industrial Electronics and Applications (ICIEA), 2012 7th IEEE Conference on

Date of Conference:

18-20 July 2012