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Open AccessArticle

Implementation of FPGA-Based Charge Control for a Self-Sufficient Solar Tracking Power Supply System

Department of Electrical Engineering, National Chin-Yi University of Technology, Taichung 41170, Taiwan
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Author to whom correspondence should be addressed.
Academic Editors: Chien-Hung Liu and Huei-Chu Weng
Appl. Sci. 2016, 6(2), 41; https://doi.org/10.3390/app6020041
Received: 6 December 2015 / Revised: 16 January 2016 / Accepted: 19 January 2016 / Published: 2 February 2016
(This article belongs to the Special Issue Selected Papers from the 2015 International Conference on Inventions)
This study used a field-programmable gate array (FPGA) with a Xilinx Spartan-3 FPGA to implement Reflex charge control in a dual-axis solar tracking system with maximum power point tracking (MPPT). The chaos embedded particle swarm optimization method was used to search for the optimum gain constants of the PI controller and the Reflex charging frequency. This scheme not only increases the output power of solar panels but also has a significant effect on switching loss and oscillation of solar charging. The experiment results showed that the proposed method can also significantly improve temperature rise, and that charging efficiency is also better than it is in a traditional charge mode. The results also showed that charging power was enough for solar tracking and the requirements of the charging system. The most significant contribution of this paper is that the scheme can be applied to any active solar tracking and charging system. View Full-Text
Keywords: field-programmable gate array (FPGA); solar tracking; chaos embedded particle swarm optimization; maximum power point tracking; Reflex charging frequency field-programmable gate array (FPGA); solar tracking; chaos embedded particle swarm optimization; maximum power point tracking; Reflex charging frequency
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Chen, J.-H.; Yau, H.-T.; Lu, J.-H. Implementation of FPGA-Based Charge Control for a Self-Sufficient Solar Tracking Power Supply System. Appl. Sci. 2016, 6, 41.

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