期刊文献+

极大似然模糊控制器在光伏MPPT中的应用 预览

Maximum Likelihood Algorithm Based on Fuzzy Controller Used in Photovoltaic MPPT
在线阅读 下载PDF
分享 导出
摘要 针对光伏电池的非线性输出特点,其最大功率点具有时变性,提出了基于极大似然估计的模糊PID控制算法。该算法根据最大功率阻抗匹配原则,建立了基于Boost结构的光伏电路系统,通过调节电路的占空比实现最大功率点跟踪,当外部环境变化时,根据光伏阵列的P—U非线性曲线,得出功率预测原理,将功率预测原理应用到模糊PID控制器,通过对模糊PID控制器中模糊规则的参数进行极大似然估计,从而更快、更准地找到最大功率点。仿真结果与传统扰动法进行比较,表明系统运行动态响应速度快、跟踪效率高,验证了算法的正确性,具有一定的推广应用价值。 The maximum power point of photovoltaic(PV)cell varies all the time for its output nonlinear features.Therefore,a fuzzy proportional integral derivative(PID)controller optimized with maximum likelihood estimation algorithm based on power prediction was proposed.In the algorithm,according to the principle of the maximum power impedance matching,the photovoltaic circuit system based on Boost structure was established,and then the maximum power point tracking(MPPT)was fulfilled by adjusting the duty cycle of the circuit.Principle of power prediction was obtained in line with the P-U nonlinear curve of the PV arrays,which changed with the external environment.The power prediction principle was applied to the fuzzy PID controller,and the membership functions of the input and output variables of the fuzzy PID controller were optimized by maximum likelihood estimation,so that the maximum power point could be found more quickly and accurately.From the above,the simulation results,by comparing with the traditional perturbation and observation method,show that the system runs with fast dynamic response and high tracking efficiency,which verifies the correctness of the algorithm.The algorithm has a certain value of popularization and application.
作者 夏华凤 许胜 付焕森 XIA Huafeng;XU Sheng;FU Huansen(Power Transformation Commutates and Control Engineering Technology Research Center of Taizhou City,Taizhou University,Taizhou 225300,Jiangsu,China;Control Science and Engineering Research Center,Jiangnan University,Wuxi 214122,Jiangsu,China;Jiangsu Key Laboratory of Measurement and Control of CSE Ministry of Education,Southeast University,Nanjing 210096,Jiangsu,China)
出处 《电气传动》 北大核心 2018年第9期56-61,共6页 Electric Drive
基金 江苏省高校自然基金(14KJB510033,14KJB470008)。
关键词 光伏电池 最大功率点跟踪 模糊PID控制 极大似然优化 功率预测 photovoltaic cell maximum power point tracking(MPPT) fuzzy proportional integral derivative(PID)control maximum likelihood optimization power prediction
作者简介 夏华凤(1981-),女,博士研究生,讲师,Email:xiahuafeng1981@126.com。
  • 相关文献

参考文献11

二级参考文献47

共引文献18

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部 意见反馈