PHOTOVOLTAIC MPPT ALGORITHM BASED ON WEIGHT FACTOR IMPROVED tanh FUNCTION

Li Ping; Mao Tian; Xu Jianqi

doi:10.19912/j.0254-0096.tynxb.2024-0995

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Acta Energiae Solaris Sinica ›› 2024, Vol. 45 ›› Issue (10) : 373-380. DOI: 10.19912/j.0254-0096.tynxb.2024-0995

PHOTOVOLTAIC MPPT ALGORITHM BASED ON WEIGHT FACTOR IMPROVED tanh FUNCTION

Li Ping^1,2, Mao Tian^1,2, Xu Jianqi^1,2

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Abstract

According to the characteristics of the PV power-voltage curve, different adaptive step-size perturbation observation maximum power point tracking algorithms are used on both sides of the maximum power point： the adaptive step-size algorithm based on tanh function is used for the right side, and the adaptive step-size algorithm based on the improved tanh function based on weight factor is used for the left side. The feasibility and superiority of the proposed adaptive step-size perturbation observation maximum power point tracking algorithm based on the weight factor improved tanh function are verified through simulation analysis and hardware tests. The simulation analysis and hardware test results show that the adaptive step-size perturbation observation maximum power point tracking algorithm based on the improved tanh function of the weight factor has better tracking speed and accuracy in both irradiance and temperature change scenarios, which can provide efficient and stable power output of the PV system.

Key words

maximum power point tracking / perturbation observation method / adaptive step size / weight factor / tanh function

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Li Ping, Mao Tian, Xu Jianqi. PHOTOVOLTAIC MPPT ALGORITHM BASED ON WEIGHT FACTOR IMPROVED tanh FUNCTION[J]. Acta Energiae Solaris Sinica. 2024, 45(10): 373-380 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0995

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