面向屋顶光伏的组合趋近律滑模MPPT控制策略  

Combinatorial Reaching Law-based Sliding Mode MPPT Control Strategy for Rooftop Photovoltaics

作　　者：李成丰 傅晓帆[1] 熊国江 吕刚 LI Cheng-feng;FU Xiao-fan;XIONG Guo-jang;LV Gang(College of Electrical Engineering,Guizhou University,Guiyang Guizhou 550025,China;Institute of Engineering Investigation and Design,Guizhou University,Guiyang Guizhou 550025,China;Extra High Voltage Transmission Company Guiyang Branch,China Southern Power Grid,Guiyang Guizhou 550025,China)

机构地区：[1]贵州大学电气工程学院,贵州贵阳550025 [2]贵州大学勘察设计研究院,贵州贵阳550025 [3]中国南方电网有限责任公司超高压输电公司贵阳局,贵州贵阳550025

出　　处：《计算机仿真》2025年第1期85-91,共7页Computer Simulation

基　　金：国家自然科学基金项目(52167007);贵州省省级科技计划项目资助(黔科合基础-ZK[2023]一般075);贵州大学引进人才科研基金项目(贵大人基合字(2021)33号)。

摘　　要：推动建筑屋顶光伏发展是我国当前经济发展的迫切要求。针对传统最大功率点追踪(MPPT)控制算法在建筑屋顶光伏工程应用中存在较大抖振、跟踪速度慢等问题,提出了基于组合趋近律的滑模MPPT控制策略。首先,组合趋近律滑模控制策略选取光伏电池板的输出电压作为控制状态变量,对系统进行直接控制。同时,以输出电压跟踪误差作为切换面函数加入控制状态变量积分项,得到积分滑模切换面函数。再次,引入指数趋近律和变速趋近律相结合的组合趋近律形式对控制律进行设计,以便有效减少趋近滑模面的时间,使系统稳定在滑模面上。最后,进行比较仿真分析。仿真结果表明,与基于指数趋近律的滑模控制、扰动观察法和电导增量法相比,基于组合趋近律的滑模MPPT控制策略具有跟踪速度更快,抖振更小等优点。Promoting the development of rooftop photovoltaics(PV)is an urgent requirement for the current economic development of China.Aiming at the problems of large chattering and slow tracking in applying traditional MPPT control algorithms in rooftop photovoltaic engineering,a sliding mode control strategy based on a combination reaching law is proposed for maximum power point tracking.Among them,the combined reaching law sliding mode control strategy selects the output voltage of the photovoltaic panel as the control state variable to control the system directly and takes the output voltage tracking eror as the switching surface function to add the integral term of the control state variable to obtain the integral sliding mode switching surface function.At the same time,a combination of exponential reaching law and variable speed reaching law is introduced to design the control law so as to effectively reduce the time of reaching the sliding mode surface and stabilize the system on the sliding mode surface.The simulation results show that compared with the exponential approach law-based sliding mode control,perturbation observation method and conductance increment method,the combined approach law-based sliding mode control strategy has the advantages of fast-tracking speed and small buffeting.

关 键 词：建筑屋顶光伏 最大功率点追踪 积分滑模 组合趋近律 

分 类 号：TM743[电气工程—电力系统及自动化]