局部阴影下光伏阵列最大功率点跟踪算法的研究

摘要

During the partial conditions,the power-voltage characteristic curve of photovoltaic array shows a multi-peak. The tradition maximum power point tracking(MPPT)methods may trapped in the local maximum power point (LMPP),and thus result in the loss of out power. A new MPPT method based on cuckoo search(CS)algorithm was studied. This novel algorithm takes advantage of the Lévy flight search mechanism,it can be fast and effective to overcome the local optimum and achieves the purpose of global MPPT. The feasibility and effectiveness of the meth⁃od is verified by simulations and experiments.%在局部阴影条件下，光伏阵列的功率-电压（P-V）特性曲线呈现多峰现象，传统的最大功率点跟踪方法容易受困于局部最大功率点，造成输出功率的损失。提出了基于布谷鸟搜索算法CS（Cuckoo Search）的MPPT新方法，利用Lévy飞行搜索机制快速、有效的跳出局部最优的束缚，完成对全局最大功率点的跟踪。仿真和实验验证了该方法的可行性和有效性。