摘要
讨论了光伏发电系统最大功率跟踪常用控制方法的优缺点,对光伏电池功率电压曲线进行了详细分析,根据分析结果把非对称模糊PID控制应用到光伏发电系统最大功率点跟踪的控制,非对称模糊控制能快速响应外界环境的变化,使光伏系统始终工作在最大功率点;同时加入PID控制可以有效消除系统在最大功率点附近的振荡现象,提高系统的稳定性。实验结果证明该方法能使系统在最大功率点稳定地工作,并能快速跟踪外部环境的变化。
According to the asymmetric characteristics ofphotovoltaic array, a novel asymmetric fuzzy PID control method is introduced for MPPT of photovoltaic generation system. Photovoltaic energy generation system can track the maximum power of PV cell rapidly by using asymmetric fuzzy control. On the basis of asymmetric fuzzy control, an added PID control is used to eliminate the power oscillation around maximum power point. Experimental results have verified the good performance of the proposed method.
出处
《电工技术学报》
EI
CSCD
北大核心
2005年第10期72-75,共4页
Transactions of China Electrotechnical Society
基金
台达电力电子科教发展基金资助项目(DREG2005010)。
关键词
光伏
MPPT
模糊PID
Photovoltaic, maximum power point tracking (MPPT) , fuzzy PID control