摘要
介绍了太阳能光伏发电系统中最大功率点(Maximum Power Point,MPP)的原理及获取最大功率点的常规方法。模糊控制具有适应性强,鲁棒性好,不依赖被控对象精确模型的特点,适合光伏发电系统输出的非线性特征。这里提出利用模糊控制策略实现光伏发电系统最大功率点的跟踪(Maximum Power Point Tracking,MPPT),论述模糊控制器的结构、规则生成、模糊决策与推理。并在此基础上建立仿真模型,对模糊控制器进行验证和分析。仿真结果表明,基于模糊策略的光伏系统具有优良的动态和稳态性能。
The theory of Maximum Power Point （MPP） and the existing conventional ways to get the MPP when power is generated by Solar photovoltaic are introduced. Fuzzy control is provided with the strong adaptability,good robustness and it doesnrt need to depend on the controlled object of the accurate model. So,it is suitable for the non- linearity characteristic in solar power supply. In this paper,the theoretical foundation that MPPT is obtained in the solar power generation system based on fuzzy- control strategy is put foward. And structure of the fuzzy controller, generation of the rules,and fuzzy decisionmaking and reasoning are discussed. With these preparations, the simulation model is built to verify its performance. The simulation results show that the system has performance of the good dynamic and steady property.
出处
《现代电子技术》
2009年第6期182-185,共4页
Modern Electronics Technique
关键词
光伏发电
模糊控制
最大功率跟踪
最大功率点
photovoltaie
fuzzy - control
maximum power point tracking
maximum point
