摘要
针对部分阴影使光伏阵列的输出特性呈现多峰值的现象,提出了一种基于改进动态差分进化的全局MPPT寻优算法。该算法修改了变异策略,能够快速地收敛于系统的最大功率点,同时加入小步长扰动微调以增加算法精度。经Matlab/Simulink仿真工具验证基于改进动态差分进化的MPPT控制算法在控制速度和精度上都得到了有效改善。
Because the power-voltage(P-V)characteristics of PV array become multi-peak curve under partially shadowed conditions,a MPPT control method of PV array based on dynamic differential evolution algorithm was come up with.The method could find the MPP point of PV system quickly and modify mutation strategy in order to improve the convergence speed.Meanwhile the method used small step perturbation to increase the accuracy of algorithm.Using the software Matlab/Simulink,simulation results demonstrate that the speed and the accuracy of the method are all improved.
作者
李宏玉
杨婷
董琳琳
孟子慧
张守宇
LI Hongyu;YANG Ting;DONG Linlin;MENG Zihui;ZHANG Shouyu(School of Electrical Engineering and Information,Northeast Petroleum University,Daqing 163318 Heilongjiang,China;Daqing Petrochemical Engineering Co.,Ltd.,Daqing 163000,Heilongjiang,China;Daqing Oilfield Construction Group Limited Company Installation Company,Daqing 163000,Heilongjiang,China)
出处
《电气传动》
北大核心
2017年第7期57-61,共5页
Electric Drive
基金
黑龙江省教育厅资助科技项目(12541071)
东北石油大学校内培育基金(XN2014110)
关键词
阴影遮蔽
光伏阵列
最大功率点跟踪
动态差分进化算法
partial shading
photovoltaic array
maximum power point tracking
dynamic differential evolution algorithm
