基于P-V特性曲线的光伏系统MPPT控制方法

叶建盈; 万威; 刘昭启; 李洲辰; 刘磊; 林波

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

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太阳能学报 ›› 2025, Vol. 46 ›› Issue (9) : 490-500. DOI: 10.19912/j.0254-0096.tynxb.2024-0759

基于P-V特性曲线的光伏系统MPPT控制方法

叶建盈, 万威, 刘昭启, 李洲辰, 刘磊, 林波

作者信息 +

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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文章历史 +

摘要

为提高光伏发电系统的稳定性和效率,提出基于P-V特性曲线的最大功率点跟踪（MPPT）控制算法。该方法通过实时快速采集P-V特性曲线数据,精准控制并定位系统的最大功率点,避免频繁调整变换器占空比带来的系统稳定性问题。采用双BOOST变换器拓扑结构,主电路与P-V特性曲线采集电路相互配合,确保系统始终工作在最大功率点。通过理论推导和深入分析工作原理,设计双BOOST电路的关键参数。利用Matlab/Simulink进行电路建模、仿真与分析,并通过半实物硬件仿真验证16 kW光伏发电系统的MPPT算法。半实物实验结果表明,该方法能快速准确定位最大功率点,且对系统和负载影响小,有效提高了系统效率和稳定性。

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.

导出引用

叶建盈, 万威, 刘昭启, 李洲辰, 刘磊, 林波. 基于P-V特性曲线的光伏系统MPPT控制方法[J]. 太阳能学报. 2025, 46(9): 490-500 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0759

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

中图分类号： TM615

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