L-Shape Propagated Array Configuration With Dynamic Reconfiguration Algorithm for Enhancing Energy Conversion Rate of Partial Shaded Photovoltaic Systems

• Published in: IEEE access Vol. 9; pp. 97661 - 97674
• Main Authors: Srinivasan, A., Devakirubakaran, S., Sundaram, B. Meenakshi, Balachandran, Praveen Kumar, Cherukuri, Santhan Kumar, Winston, D. Prince, Babu, Thanikanti Sudhakar, Alhelou, Hassan Haes
• Format: Journal Article
• Language: English
• Published: Piscataway IEEE 2021; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Algorithms; Approximation algorithms; Array configuration; Arrays; Configurations; Dispersion; Energy conversion; futoshiki puzzle pattern; Heuristic algorithms; Irradiation; mismatch loss; Modules; partial shading; Photovoltaic cells; PV array reconfiguration; Radiation effects; Reconfiguration; Resistance; Sensor arrays; Sensors; Shading; sudoku pattern; Switching circuits; total cross tied (TCT)
• ISSN: 2169-3536; 2169-3536
• DOI: 10.1109/ACCESS.2021.3094736

Partial shading is an unavoidable factor that reduces the performance of solar PV systems. The PV system receives uneven irradiation due to partial shading which causes the mismatch loss. The partial shading distracts the irradiation from the PV modules that makes the healthy modules as idle or low performing modules. The mismatch loss can be mitigated by uniformly distributing the partial shading over the PV array. In this work, L-shaped propagated array configuration method with a new dynamic reconfiguration algorithm have proposed for enhancing the energy conversion under the partial shading conditions. A new kind of array configuration is implemented in a <inline-formula> <tex-math notation="LaTeX">4\times 4 </tex-math></inline-formula> PV array for the better shade dispersion. Further, a dynamic reconfiguration algorithm is employed to disperse the effect of partial shading. The combination of new array configuration and reconfiguration method is simulated in MATLAB/Simulink® and implemented in hardware. The outputs are measured under all possible shading patterns and validated with the outputs of convention methods for observing the enhanced energy conversion rate of the proposed system.