湖南大学学报（自然科学版）2016，Vol.43Issue(2)：92-100,9.
基于电流反馈模糊控制算法的光伏模拟器研究
A New Photovoltaic Array Simulator Based on Current Feedback Fuzzy Control
摘要
Abstract
A new photovoltaic array simulator was studied and designed on the basis of a Buck DC con-verter and the current feedback fuzzy control theory.The output voltage of the Buck converter was meas-ured and used to calculate the current of photovoltaic array engineering mathematics model used as the in-put reference current of the fuzzy controller.The difference of the reference current and the real-time feed-back current of the Buck converter and its rate of change were regarded as two input variables of the fuzzy controller,and then,the duty cycle of the electronic power switch was adjusted with closed-loop fuzzy al-gorithm to make the output voltage and the current of the simulator work at the anticipant point of the photovoltaic array on the V-I characteristic curve and realize the simulation of photovoltaic properties.Afuzzy controller with TMS320F2812CPU and a triangular fuzzy membership function was used and the do-main of the input and output variables limited to [-3 3]contained 49 fuzzy rules.Simulation and experi-ment results have shown that the fuzzy control simulator can not only accurately simulate the static output characteristics of the photovoltaic cell,but can also rapidly realize the dynamic characteristics when the load or the external environment changes,and the approximate error is under 3.6%,the overshoot under 3.5%,the ripple coefficient under 3% and the tracking time about 0.3s.The fuzzy control simulator can work well as PV array experiment equipment for the research and development of photovoltaic systems.关键词
光伏阵列/模拟器/模糊控制/反馈/V-I特性曲线/BUCK直流变换器Key words
photovoltaic array/simulator/fuzzy control/feedback/V-I characteristic curve/Buck DC converter分类
信息技术与安全科学引用本文复制引用
孟志强,邵武,周华安,苏烁..基于电流反馈模糊控制算法的光伏模拟器研究[J].湖南大学学报（自然科学版）,2016,43(2):92-100,9.基金项目
国家自然科学基金资助项目（51207026，51377049），National Natural Science Foundation of China （）
