变结构模糊控制在光伏发电MPPT中的应用  

Variable Structure Fuzzy Control Applied in Maximum Power Point Tracking of Photovoltaic Power Generation

作　　者：李畸勇[1] 王宏华[1] 

机构地区：[1]河海大学,江苏南京210098

出　　处：《电力电子技术》2010年第2期4-6,共3页Power Electronics

摘　　要：讨论了光伏发电系统最大功率点跟踪(Maximum Power Point Tracking,简称MPPT)常用控制方法的优缺点,对光伏电池功率电压曲线进行了分析。根据分析结果将变结构模糊控制应用到光伏发电系统MPPT的控制,能快速响应外界环境的变化,使光伏发电系统始终工作在最大功率点(Maximum Power Point,简称MPP)。在两种天气条件下的实验结果证明,该方法能使系统在MPP稳定工作,并能快速跟踪外部环境的变化,具有良好的动、稳态性能。The Advantages and disadvantages about the maximum power point tracking（MPPT） methods in photovoltaic generation system are discussed.The Power-voltage curve of photovoltaic array is analyzed.According to power-voltage characteristics of photovoltaic array,variable structure fuzzy control method is introduced for MPPT of photovoltaic genera-tion system.The system can track the maximum power point（MPP） of photovoltaic cell rapidly by using variable structure fuzzy control when the environment changes quickly.The experimental results in two kinds of weather conditions verify the proposed method can track the changes external environment,and the photovoltaic system can run in MPP with good dy-namic and static performances.

关 键 词：模糊控制 光伏发电 最大功率点跟踪 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]