Algerian Journal of Renewable Energy and Sustainable Development
Volume 1, Numéro 1, Pages 99-111
2019-06-15
Mppt Controller For Pv Array Under Partially Shaded Condition
Authors : Badoud Abd Essalam .
Abstract
The output power of the Photovoltaic system having multiple arrays is reduced to a great extent when it is partially shaded due to environmental hindrances. Conventional popular MPPT methods are effective under uniform solar irradiance. However, under partially shaded conditions, these MPPTs can fail to track the real MPP because of the multiple local maxima which can be existed on PV characteristic curve under partially shaded condition. This paper reports the development of a maximum power-point tracking method for photovoltaic systems under partially shaded conditions using bond graph. The major advantages of the proposed method are simple computational steps, faster convergence, and its implementation on a low-cost microcontroller. The performance of proposed MPPT is analyzed according to the position of real MPP. Simulation results have been contrasted with real measured data from a commercial PV module of Photowatt PW1650.
Keywords
Photovoltaic system, Maximum power point tracking, Shaded condition, Bond graph, Controller, Shading
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