摘要
为了使光伏电池的光电转化效率能有最大限度提高,采用基于PI-模糊控制理论的光伏MPPT扰动观察法,对传统的光伏MPPT跟踪方法进行改进。实现方法是根据光伏系统的输出状态,利用模糊逻辑控制器实时调整扰动幅度,使用PI控制器减轻稳态误差。在MATLAB/Simulink中搭建光伏系统各模块,比较分析改进前后的仿真结果,论证了改进方法有利于减轻光伏电池最大功率点附近的振荡,也在一定程度上加快了响应速度。
In order to maximize the photoelectric conversion efficiency of photovoltaic cells,the photovoltaic MPPT P&O method based on PI-fuzzy control theory is adopted to improve the traditional photovoltaic MPPT tracking method.The implementation method is according to the output state of the photovoltaic system,using a fuzzy logic controller to adjust the disturbance amplitude in real time,and using a PI controller to reduce the steady-state error.The modules of the photovoltaic system are built in MATLAB/Simulink,and the simulation results before and after the improvement are compared and analyzed.It is proved that the improved method is beneficial to reduce the vibration near the maximum power point of photovoltaic cells,and accelerates the response speed to a certain extent.
作者
惠子轩
施建强
范静仪
HUI Zixuan;SHI Jianqiang;FAN Jingyi(School of Energy and Power Engineering,Nanjing Institute of Technology,Nanjing 211167,China)
出处
《电工技术》
2020年第7期1-4,共4页
Electric Engineering
基金
国家自然科学基金资助项目(编号51577086)。
