光伏系统多峰最大功率点跟踪法研究  

RESEARCH OF GLOBAL MAXIMUM POWER POINT TRACKING IN PHOTOVOLTAIC SYSTEM

作　　者：薛蕾[1] 赵建辉[1] 李帆[1] 郝博[1] 李进[1] 

机构地区：[1]北京航空航天大学仪器科学与光电工程学院,北京100191

出　　处：《太阳能学报》2014年第8期1422-1428,共7页Acta Energiae Solaris Sinica

摘　　要：在Matlab/Simulink下对光伏阵列进行建模,验证其输出功率的多峰特性。改进模糊PID控制算法,实现扰动占空比步长自适应调节,减小振荡;且光照强度突变时,进一步调整扰动占空比,避免陷入局部极大值,找到全局最大功率,实现多峰最大功率点跟踪;结合免疫反馈机理,提高系统的响应速度和控制精度。仿真表明,当外界条件变化时,系统可有效跟踪光伏模块的全局最大功率,且响应速度快,鲁棒性强。The model of PV array in Matlab/Simulink was presented to verify the multi-peak characteristics of PV array under a non-uniform insolation due to partial s cycle step and reduces the oscillation. Further hading. The improved fuzzy-PID controller performs self-tuning of the duty adjustment of the duty cycle can avoid the global maximum power point when insolation changes falling into local maxima and finds , which achieves global maximum power point tracking （MPPT）. The combination of the artificial immunity feedback improves the response speed and control accuracy of the system. The simulation results show that the system can effectively track the maximum power point of PV modules, and has a better dynamic performance and robustness when the insolation changes

关 键 词：光伏系统 最大功率点跟踪(MPPT) 自适应模糊PID控制 人工免疫 局部阴影 

分 类 号：TM615[电气工程—电力系统及自动化]