MPPT CONTROL METHOD FOR PHOTOVOLTAIC SYSTEMS BASED ON P-V CHARACTERISTIC CURVE

Ye Jianying; Wan Wei; Liu Zhaoqi; Li Zhouchen; Liu Lei; Lin Bo

doi:10.19912/j.0254-0096.tynxb.2024-0759

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (9) : 490-500. DOI: 10.19912/j.0254-0096.tynxb.2024-0759

MPPT CONTROL METHOD FOR PHOTOVOLTAIC SYSTEMS BASED ON P-V CHARACTERISTIC CURVE

Ye Jianying, Wan Wei, Liu Zhaoqi, Li Zhouchen, Liu Lei, Lin Bo

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Abstract

In order to improve the efficiency and stability of photovoltaic power generation systems, a maximum power point tracking （MPPT） control algorithm based on the P-V characteristic curve is proposed. This method can accurately control and locate the maximum power point of the system by collecting P-V characteristic curve data in real time, and avoids the system stability problem caused by frequently adjusting the duty cycle. The dual BOOST converter topology is adopted, where the main circuit and P-V characteristic curve acquisition circuit cooperate with each other to ensure that the system always operates at the maximum power point. Through theoretical derivation and in-depth analysis of the working principle, the key parameters of the dual BOOST circuit are designed. The circuit modeling, simulation, and analysis are performed using Matlab/Simulink, and the MPPT algorithm for a 16 kW photovoltaic power generation system is verified through hardware-in-the-loop （HIL） simulation. The experimental results show that this method can quickly and accurately locate the maximum power point, with minimal impact on the system and load, effectively improving system efficiency and stability.

Key words

photovoltaic power generation / maximum power point tracking / control / algorithm / P-V characteristics

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Ye Jianying, Wan Wei, Liu Zhaoqi, Li Zhouchen, Liu Lei, Lin Bo. MPPT CONTROL METHOD FOR PHOTOVOLTAIC SYSTEMS BASED ON P-V CHARACTERISTIC CURVE[J]. Acta Energiae Solaris Sinica. 2025, 46(9): 490-500 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0759

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