Universiti Teknologi Malaysia Institutional Repository

Analysis of perturb and observe maximum power point tracking algorithm for photovoltaic applications

Tan, C. W. and Green, T. C. and Hernandez-Aramburo, C. A. (2008) Analysis of perturb and observe maximum power point tracking algorithm for photovoltaic applications. In: Proceedings of 2008 2nd IEEE International Conference on Power and Energy (PECon 2008) , 2008, Johor Bahru, Johor.

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Official URL: http://dx.doi.org/10.1109/PECON.2008.4762468

Abstract

This paper highlights the compromises between good steady-state accuracy and the speed of convergence in Perturb and Observe (P&O) maximum power point tracking (MPPT) algorithm. Three fixed step-sizes and a variable step-size have been defined as the perturbation step-sizes and the effect of applying different step-sizes for P&O algorithm are discussed. The perturbation step-sizes have been simulated using Matlab/Simulink and the maximum power tracking efficiency for each step-size is analysed. These step-sizes have been experimentally tested using a PV illumination test rig to emulate rapid changes in shadow effect on a PV panel. The fixed step-sizes are tested using a direct duty-cycle control boost converter while the variable step-size is examined by applying current-mode controlled boost converter. It is concluded that the application of fixed perturbation step-size has a limitation in performing MPPT while a variable step-size is necessary to balance the competing aims of speed and accuracy.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:Photovoltaic, maximum power point tracking, perturb and observe
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:Electrical Engineering
ID Code:15989
Deposited By: Siti Khairiyah Nordin
Deposited On:14 Oct 2011 08:46
Last Modified:14 Oct 2011 08:46

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