可再生能源2017，Vol.35Issue(1)：26-31,6.
基于模糊控制的无电压传感器光伏系统MPPT研究
Research on the fuzzy control based MPPT of voltage sensor-less photovoltaic system
摘要
Abstract
Based on the fact that the DC bus voltage of photovoltaic grid-connected system is constant,an equivalent power is defined by the current of the photovoltaic cell and the duty cycle of the Boost converter.A voltage sensor-less MPPT algorithm is analyzed according to this equivalent power.In order to realize a variable step-size algorithm to ensure the speed of MPPT,the proposed MPPT algorithm is combined with fuzzy control.As a result,the dynamic performance of the system is improved.Then a photovoltaic grid-connected system simulation model based on the Matlab/Simulink is established.The comparison of the proposed algorithm and perturb & observe algorithm indicates that the former has higher MPPT speed besides good steady accuracy.Experiments under the condition of variable illumination and temperature prove that the proposed algorithm has better robustness.关键词
光伏并网发电系统/等效功率/Boost变换器/无电压传感器/最大功率点跟踪/模糊控制Key words
photovoltaic grid-connected system/equivalent power/Boost converter/voltage sensor-less/MPPT/fuzzy control分类
信息技术与安全科学引用本文复制引用
付豪,苏义鑫,高佳磊..基于模糊控制的无电压传感器光伏系统MPPT研究[J].可再生能源,2017,35(1):26-31,6.基金项目
湖北省自然科学基金项目(2015CFB586). （2015CFB586）
