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Energies 2016, 9(3), 147; doi:10.3390/en9030147

Efficient Photovoltaic System Maximum Power Point Tracking Using a New Technique

1
School of Engineering, Deakin University, Waurn Ponds, VIC 3216, Australia
2
School of Software and Electrical Engineering, Swinburne University of Technology, Hawthorn, VIC 3122, Australia
3
Centre of Technology, RMIT University, Ho Chi Minh 70000, Vietnam
*
Author to whom correspondence should be addressed.
Academic Editor: Tapas Mallick
Received: 9 October 2015 / Revised: 30 January 2016 / Accepted: 4 February 2016 / Published: 2 March 2016
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Abstract

Partial shading is an unavoidable condition which significantly reduces the efficiency and stability of a photovoltaic (PV) system. When partial shading occurs the system has multiple-peak output power characteristics. In order to track the global maximum power point (GMPP) within an appropriate period a reliable technique is required. Conventional techniques such as hill climbing and perturbation and observation (P&O) are inadequate in tracking the GMPP subject to this condition resulting in a dramatic reduction in the efficiency of the PV system. Recent artificial intelligence methods have been proposed, however they have a higher computational cost, slower processing time and increased oscillations which results in further instability at the output of the PV system. This paper proposes a fast and efficient technique based on Radial Movement Optimization (RMO) for detecting the GMPP under partial shading conditions. The paper begins with a brief description of the behavior of PV systems under partial shading conditions followed by the introduction of the new RMO-based technique for GMPP tracking. Finally, results are presented to demonstration the performance of the proposed technique under different partial shading conditions. The results are compared with those of the PSO method, one of the most widely used methods in the literature. Four factors, namely convergence speed, efficiency (power loss reduction), stability (oscillation reduction) and computational cost, are considered in the comparison with the PSO technique. View Full-Text
Keywords: photovoltaic systems; maximum power point tracking; partial shading conditions; soft computing methods; energy efficiency; stability; computational cost photovoltaic systems; maximum power point tracking; partial shading conditions; soft computing methods; energy efficiency; stability; computational cost
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Seyedmahmoudian, M.; Horan, B.; Rahmani, R.; Maung Than Oo, A.; Stojcevski, A. Efficient Photovoltaic System Maximum Power Point Tracking Using a New Technique. Energies 2016, 9, 147.

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