摘要
在光伏发电系统实际运行中,经常会被部分遮蔽,这将导致光伏输出特性更为复杂。针对光伏发电系统在部分遮蔽情况下所具有的高度非线性、时变不确定和多个局部功率峰值的特点,模糊逻辑被用来跟踪系统的实际最大功率点,通过改进传统模糊法,实现了部分遮蔽情况下的模糊扰动跟踪,并利用人工免疫理论增强系统的响应速度和鲁棒性。通过和传统扰动观察法的比较,仿真结果表明在系统被部分遮蔽的情况下,所建议的方法具有良好的动态性能。
PV generation system is partially shaded at times in actual operation,which makes the PV output characteristics more complicated.Aiming at its nonlinearity,uncertainty and multi-peak,fuzzy logic is applied to track the actual maximum power point of system.The conventional fuzzy logic controller is further improved to realize the fuzzy perturbative tracking under partial shade condition and the artificial immunity theory is used to enhance the response speed and robustness.The simulative results show that,the proposed method has a better dynamic performance than that of the traditional PO method.
出处
《电力自动化设备》
EI
CSCD
北大核心
2010年第7期96-99,116,共5页
Electric Power Automation Equipment
基金
中国博士后基金项目(20080440088)
上海市博士后基金项目(08R214134)
山西省青年科技研究基金项目(2009021020)~~
关键词
光伏
最大功率点跟踪
模糊逻辑
人工免疫
photovoltaic power
maximum power point tracking
fuzzy logic
artificial immunity
