THW-GWO-P&#x00026;O COMPOSITE MPPT CONTROL OF PHOTOVOLTAIC ARRAYS UNDER COMPLEX LIGHTING CONDITIONS

Gu Jipeng; Wang Shuyi; Wang Binjie; Zhang Youbing; Zhang Zhiming; Shen Chengyu

doi:10.19912/j.0254-0096.tynxb.2024-1662

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (1) : 116-126. DOI: 10.19912/j.0254-0096.tynxb.2024-1662

THW-GWO-P&O COMPOSITE MPPT CONTROL OF PHOTOVOLTAIC ARRAYS UNDER COMPLEX LIGHTING CONDITIONS

Gu Jipeng¹, Wang Shuyi¹, Wang Binjie², Zhang Youbing¹, Zhang Zhiming³, Shen Chengyu³

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Abstract

A maximum power point tracking （MPPT） control method combining the twin-wolf-driven gray wolf optimization （THW-GWO） with perturbation and observation （P&O） is proposed to enhance the energy utilization efficiency of photovoltaic arrays. First, an in-depth analysis is conducted on the power generation principles of photovoltaic arrays under complex illumination conditions and the MPPT control principles, theoretically explaining the reasons for the relatively low tracking efficiency of P&O. Second, GWO and P&O are integrated to improve the tracking efficiency of MPPT control for photovoltaic arrays. To achieve better performance in terms of GWO convergence speed and local optimal solution search, adaptive adjustments are made to the convergence factor, weighted distance, and position update weight of GWO, resulting in THW-GWO. Finally, the control performance of photovoltaic arrays under P&O, GWO, THW-GWO, and THW-GWO-P&O is compared and analyzed in Matlab/Simulink. Results demonstrate that THW-GWO-P&O achieves higher energy conversion efficiency, optimization accuracy, and convergence speed under both uniform illumination and partial shading conditions, validating its superior optimization performance.

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PV arrays / maximum power point trackers / perturbation techniques / grey wolf optimization algorithm / complex illumination / energy conversion efficiency

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Gu Jipeng, Wang Shuyi, Wang Binjie, Zhang Youbing, Zhang Zhiming, Shen Chengyu. THW-GWO-P&O COMPOSITE MPPT CONTROL OF PHOTOVOLTAIC ARRAYS UNDER COMPLEX LIGHTING CONDITIONS[J]. Acta Energiae Solaris Sinica. 2026, 47(1): 116-126 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1662

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