Reconfiguration Method in Photovoltaic Array for Nonuniform Shading Condition
Abhronil Chaudhuri1, Lakshay Gopalka2
1Abhronil Chaudhuri, Department of Mechatronics Engineering, SRM Institute of Science and Technology, Kattankulathur, Chennai (Tamil Nadu), India.
2Lakshay Gopalka, Department of Mechatronics Engineering, SRM Institute of Science and Technology, Kattankulathur, Chennai (Tamil Nadu), India.
Manuscript received on 18 July 2019 | Revised Manuscript received on 25 July 2019 | Manuscript Published on 01 August 2019 | PP: 1-6 | Volume-8 Issue-4S2, April 2019 | Retrieval Number: D10010484S219/19©BEIESP | DOI: 10.35940/ijeat.D1001.0484S219
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: The output of the photovoltaic array is directly related to the external environment and solar irradiation. Photovoltaic arrays are affected by partial shading which deviates the VI and PV curve from ideal state. This phenomenon influences the operating efficiency of Photovoltaic arrays, as generated power is reduced and hotspots are formed. One possible way to get rid of such negative phenomenon is to reconfigure the Photo voltaic arrays and another method is to operate Photo voltaic panels in peak voltage, which includes global maximum power (GMP) but it has few drawbacks like high complexity, time-consuming. This paper proposes a new methodology of reconfiguring series-parallel (SP) photovoltaic array, which is implemented on MATLAB Simulink. The scheme extracts maximum power by electrically connecting all the shaded or underperforming photovoltaic panels in a common series connection, such that the restricted flow of electricity due to shaded panels is only restricted through one part of the series-parallel photovoltaic array. This method is unlike some interconnection method as it utilizes a reconfigurable part to normalize the fixed part, it is completely adaptable. The obtained results from simulation prove the reliability and overall efficiency under partially shaded array configuration.
Keywords: Photo Voltaic Array, Reconfiguration, Shading, Irradiance.
Scope of the Article: Encryption Methods and Tools