A Reconfiguration Circuit to Boost the Output Power of a Partially Shaded PV String

Ali Faisal Murtaza and Hadeed Ahmed Sher ()
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Ali Faisal Murtaza: Faculty of Engineering, University of Central Punjab, Lahore 54000, Pakistan
Hadeed Ahmed Sher: Faculty of Electrical Engineering, Ghulam Ishaq Khan Institute of Engineering Sciences and Technology, Topi 23640, Pakistan

Energies, 2023, vol. 16, issue 2, 1-13

Abstract: An optical isolator circuit is developed to detect and dynamically relocate the photovoltaic (PV) module under partial shading. The suggested system control structure operates in two modes. Mode 1 governs the system at global maxima (GM) by tracing the power-voltage (PV) curve. Mode 2 detects and separates all the bypassed modules from a PV string/array by means of a decentralized control and stores its power in the battery. Simulations are performed on different shading patterns to verify the efficacy of the suggested system. The results showcase that the averaged harnessed power using the proposed circuit is 25.26% more than the total cross-tied (TCT) and series-parallel (SP) array configurations. The proposed circuit does not require complex gate driver circuits and large switch counts. The circuit is scalable and can be implemented on an “N × N” array.

Keywords: reconfigurable photovoltaic array; TCT; hardware MPPT; electrical mismatch; partial shading mitigation; PV interconnection schemes (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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