摘要
为了减小外界环境对光伏发电系统的影响,采取最大功率跟踪控制措施.而针对其中的扰动观察法需要解决选择合适步长的问题,提出一种模糊PI控制的扰动观察法.该方法是将扰动观察法能快速接近最大功率点和模糊PI控制能精确的逼近最大功率点的特点结合起来,实现快速准确的跟踪光伏发电系统输出的最大功率点,保证了系统运行的稳定性和能量转换的高效性.通过仿真来验证该控制方法的可行性.
In order to reduce the influence of external environment in photovoltaic power generation system,the maximum power tracking control is adopted. In view of the disturbance observation method,the problem of selecting proper step size should be solved,and a disturbance observation method based on fuzzy PI control is proposed. The method combines the characteristics of the perturbation observation approach with the maximum power point and the fuzzy PI control to approximate the maximum power point accurately,fast and accurate tracking of the maximum power point of photovoltaic power generation system is achieved,which ensures the stability of the system operation and the efficiency of energy conversion.The feasibility of the control method is verified by simulation.
出处
《浙江水利水电学院学报》
2017年第4期75-78,共4页
Journal of Zhejiang University of Water Resources and Electric Power
基金
安徽省教育厅重点科研项目(KJ2017A577)
安徽省教育厅质量工程项目(2014ZY077)
关键词
扰动观察法
模糊PI控制
最大功率跟踪
perturbation observation
fuzzy- PI
maximum power point tracking
