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An improved perturb and observe (P&O) maximum power point tracking (MPPT) algorithm for higher efficiency

Ahmed, Jubaer and Salam, Zainal (2015) An improved perturb and observe (P&O) maximum power point tracking (MPPT) algorithm for higher efficiency. Applied Energy, 150 . pp. 97-108. ISSN 3062-619

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Official URL: http://www.sciencedirect.com/science/article/pii/S...


This paper proposes a method to improve the efficiency of the P&O maximum power point tracker (MPPT) by reducing the steady state oscillation and eliminating the possibility of the algorithm to lose its tracking direction. A dynamic perturbation step-size is employed to reduce the oscillation, while boundary conditions are introduced to prevent it from diverging away from the MPP. To prove its effectiveness, the proposed P&O is compared with the conventional and adaptive P&O using the Ropp, sinusoidal and ramp irradiance tests. In addition, the performances are evaluated based on a one-day (10 h) irradiance and temperature profile. The algorithm is implemented on a buck-boost converter and benchmarked by the standard MPPT efficiency (?MPPT) calculation. It was found that, for all the tests, the ?MPPT of the proposed P&O scheme is increased by approximately two percentage points. Besides, the proposed algorithm does not require any extra hardware components; only several lines of additional software codes are to be embedded into the conventional P&O MPPT control program.

Item Type:Article
Uncontrolled Keywords:solar energy, photovoltaic, P&O, MPPT, P–V curve, MPPT
Subjects:A General Works
ID Code:57764
Deposited By: Haliza Zainal
Deposited On:04 Dec 2016 12:07
Last Modified:11 Sep 2017 11:36

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