【摘要】 为了获得太阳能光伏阵列最大功率输出,需要对光伏阵列最大功率点实行跟踪,针对传统MPPT算法的不足,文章引入变步长黄金分割搜索法,其原理是动态改变步长确定搜索范围,再通过迭代逐步逼近最大功率点,使得在实际工程中具有快速收敛特性。通过建立数学模型并在Matlab/Simulink上进行仿真分析,将所得的仿真结果与传统的MPPT算法比较,该算法能快速地实现光伏发电系统最佳工作点的跟踪,提高了光伏发电系统的发电效率,同时具有控制精度高和控制速率快的特点。更多还原

【Abstract】 In order to obtain the maximum power output of the solar photovoltaic array,it is necessary to track the maximum power point of the array.In view of the deficiency of the traditional algorithm of maximum power point tracking(MPPT),the variable step size method of golden section search is introduced,whose principle is to change the step size dynamically so as to determine the search range,and then to approach the maximum power point step by step through the interaction.As a result,the method has the characteristic of fast convergence in practical engineering.Based on the establishment of mathematical model,the simulation and analysis in Matlab/Simulink,and the comparison between the simulation result and the result by the traditional algorithm of MPPT,it is concluded that the presented method can rapidly track the optimal point of photovoltaic power generation system,effectively improve the efficiency of photovoltaic power generation system and has features of high control precision and rate.更多还原