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Design and implementation of a FLC-based MPPT technique for photovoltaic systems

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4 Author(s)
Jia-Wei Huang ; Department of Electrical Engineering, NTUST, Taipei, Taiwan ; Chun-Liang Liu ; Rong Ceng Leou ; Yi-Hua Liu

Photovoltaic (PV) energy is one of the most important renewable energy sources since it is clean, free and inexhaustible. To improve the conversion efficiency, a maximum power point tracking (MPPT) technique which has quick response and is able to track the peak power generated in any weather condition is required. In this paper, a novel Fuzzy Logic Controller (FLC) based MPPT technique for PV system is proposed. The proposed method can automatically adjust the step size to track the PV panel maximum power point (MPP). Comparing with the conventional fixed step size P&O method, the proposed approach can effectively address the tradeoff between the dynamics and steady state oscillations simultaneously. The design and implementation of the proposed method will be provided in this paper. Finally, simulation and experimental results will be provided to validate the effectiveness of the proposed method.

Published in:

TENCON 2011 - 2011 IEEE Region 10 Conference

Date of Conference:

21-24 Nov. 2011