光伏發電的最大功率點跟蹤控制

摘要：最大功率點的跟蹤（MPPT）是提高光伏發電系統效率的有效手段之一，本文在分析光伏電池輸出特性的基礎上，討論了幾種常見的最大功率點跟蹤算法，最后提出了改進的變步長擾動觀測法，并進行了仿真驗證。 敘詞：光伏發電 最大功率點跟蹤 變步長擾動觀測法 Abstract：The maximum power point tracking is the effective ways to improve the efficiency of Photovoltaic Array. At first ,the article analyse the Output characteristics of PV,then introduce several common ways of MPPT. At last,introduce　a improved perturbation and observation method with changing perturbation step and gets validated by simulation. Keyword：Photovoltaic power generation, Maximum power point tracking, Perturbation and observation method with changing perturbation step