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<p>Partial shading conditions cause suboptimal power output and intensify voltage differentials, leading to mismatch losses and localized potential degradation in solar cell performance. However, the impact of partial shading can be mitigated to a large extent through the reconfiguration of PV arrays. The proposed method group sequence rotation array (GSRA), a generalized reconfiguration strategy for total-cross-tied arrays applicable to both square and rectangular configurations. GSRA operates without additional MPPT hardware, sensors, or complex switching circuits, offering a low-cost and scalable solution. Simulations performed on 9 × 9 and 5 × 5 arrays, along with experimental validation on a 6 × 4 prototype, demonstrate that GSRA increases power extraction and reduces shading-induced losses. Compared with the conventional TCT topology, GSRA achieves approximately 40% lower mismatch loss, about 8% reduction in total power loss, and wiring losses of nearly 12%. The results confirm that GSRA enhances electrical performance while maintaining a simple and practical implementation under diverse shading scenarios.</p>

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A Novel Reconfiguration Strategy for Evaluation of Line Losses and Energy Saving of a Partially Shaded PV Array

  • 期刊论文

  • 发表日期：

    2026年4月6日

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  • Anshika Pathak,
  • Vinod Kumar Yadav,
  • Narendra Kumar

摘要

Partial shading conditions cause suboptimal power output and intensify voltage differentials, leading to mismatch losses and localized potential degradation in solar cell performance. However, the impact of partial shading can be mitigated to a large extent through the reconfiguration of PV arrays. The proposed method group sequence rotation array (GSRA), a generalized reconfiguration strategy for total-cross-tied arrays applicable to both square and rectangular configurations. GSRA operates without additional MPPT hardware, sensors, or complex switching circuits, offering a low-cost and scalable solution. Simulations performed on 9 × 9 and 5 × 5 arrays, along with experimental validation on a 6 × 4 prototype, demonstrate that GSRA increases power extraction and reduces shading-induced losses. Compared with the conventional TCT topology, GSRA achieves approximately 40% lower mismatch loss, about 8% reduction in total power loss, and wiring losses of nearly 12%. The results confirm that GSRA enhances electrical performance while maintaining a simple and practical implementation under diverse shading scenarios.