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RISC-microcontroller built-in fuzzy logic controller of maximum power point tracking for solar-powered light-flasher applications

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4 Author(s)
N. Khaehintung ; Dept. of Control & Instrum. Eng., Mahanakorn Univ. of Technol., Bangkok, Thailand ; K. Pramotung ; B. Tuvirat ; P. Sirisuk

This paper presents the development of maximum power point tracking (MPPT) using a fuzzy logic controller (FLC). By applying the synthetic fuzzy inference algorithm, the relationship between input and output of FLC can be effectively stored in a memory-limited lookup table (LUT). As a consequence, the controller can be efficiently implemented on a low-cost 16F872 RISC microcontroller. A practical system found in a transportation industry, particularly a solar-powered light-flasher (SPLF) with built in MPPT using FLC, is developed. Simulations with practical parameters show that our proposed MPPT using FLC implemented by LUT outperforms the conventional MPPT controller in terms of tracking speed. Furthermore, experimental results are shown to demonstrate the superiority of the proposed technique.

Published in:

Industrial Electronics Society, 2004. IECON 2004. 30th Annual Conference of IEEE  (Volume:3 )

Date of Conference:

2-6 Nov. 2004