PHOTOVOLTAIC MPPT CONTROL BASED ON IMPROVED IMMUNE ALGORITHM AND PERTURB OBSERVA METHOD

Liu Ruiyang; Hao Wanjun; Zhu Lixiang; Li Junqiang

doi:10.19912/j.0254-0096.tynxb.2024-2087

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (3) : 768-774. DOI: 10.19912/j.0254-0096.tynxb.2024-2087

PHOTOVOLTAIC MPPT CONTROL BASED ON IMPROVED IMMUNE ALGORITHM AND PERTURB OBSERVA METHOD

Liu Ruiyang, Hao Wanjun, Zhu Lixiang, Li Junqiang

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Abstract

The P-U curve of PV array shows multiple peak characteristics under time-varying conditions, which makes the traditional MPPT control algorithm easily fall into the local optimal solution, and the optimization speed is slow, which reduces the overall power generation efficiency of PV array. A two-layer MPPT control strategy based on improved immune algorithm and perturbation observation method is proposed. Firstly, according to the characteristics of multiple peaks of P-U curve under time-varying conditions, an improved immune optimization algorithm based on MPPT comprehensive performance index is proposed, and the MPP points iterated in the upper layer are imported to the lower layer for disturbance tracking. Simulation results show that the optimization time of the photovoltaic MPPT control algorithm based on improved immune and disturbance observation method is 20% of that of similar algorithms, the steady-state tracking accuracy is 0.26-0.84 percentage points higher than that of similar algorithms, and the outlier offset is 38.36%-60.89% lower than that of similar algorithms. It can effectively improve the maximum power tracking efficiency and accuracy of photovoltaic arrays under time-varying working conditions, and has the characteristics of small steady-state fluctuation.

Key words

photovoltaic system / maximum power point tracking（MPPT） / perturbation and observation（P&O） / improved immune algorithm（IIA） / simulink simulation

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Liu Ruiyang, Hao Wanjun, Zhu Lixiang, Li Junqiang. PHOTOVOLTAIC MPPT CONTROL BASED ON IMPROVED IMMUNE ALGORITHM AND PERTURB OBSERVA METHOD[J]. Acta Energiae Solaris Sinica. 2026, 47(3): 768-774 https://doi.org/10.19912/j.0254-0096.tynxb.2024-2087

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