光伏发电系统MPPT算法研究综述

Review of MPPT algorithm of photovoltaic power generation system

光伏发电系统中,光伏电池输出功率易受光照强度、温度等环境因素的影响,具有典型的非线性特征。因此为了提高光伏电池利用效率,需要对光伏电池最大输出功率进行实时追踪,以确保光伏电池保持最大功率输出。综述了国内外光伏阵列最大功率点追踪(MPPT)算法研究现状,介绍了均匀光照与局部遮阴条件下常见的光伏阵列最大功率点追踪算法,分析其原理并比较其优缺点,提炼存在的问题,理清下一步研究思路。最后对现阶段MPPT研究方向进行探讨,指出其未来发展趋势。

In photovoltaic power generation systems,the output power of photovoltaic cells is susceptible to environmental factors such as light intensity and temperature,and has typical nonlinear characteristics.Therefore,in order to improve the efficiency of photovoltaic cells,the photovoltaic cells required a real-time tracking so as to ensure the maximum power output.This paper summarized the current research status of MPPT algorithms for photovoltaic arrays at home and abroad,introduced the algorithms for tracking maximum power points of photovoltaic arrays under uniform lighting and local shading conditions,analyzed the principles and compared their advantages and disadvantages,refined the existing problems,and sorted out the next research ideas.Finally,the current research direction of MPPT was discussed,and its future development trends were pointed out for readers'reference.