在傳統的光伏系統最大功率點跟蹤（MPPT）策略中，擾動觀測法是檢測系統的輸入電壓電流，計算其輸入功率并使其達到最大。本文在分析了光伏電池特性及數學模型的基礎上，提出了一種以系統輸出電流最大為目標、不依賴光伏電池輸出特性檢測的最大功率點跟蹤策略。最后，通過電流型光伏并網逆變器和光伏充電器的實驗結果，該方案的可行性和正確性得到了驗證。
Abstract: In conventional maximum power point tracking（MPPT）strategy of photovoltaic System , the disturbance observation
technology needs to measure the input voltage and current in order that the input power is maximized. With the analysis of
characteristic and mathematic model of photovoltaic cell , a MPPT strategy is proposed in this paper which aims at getting
maximum output current and doesn’t need to get the output characteristic of photovoltaic cell. The experiment results of a current
source PV grid-connected inverter and a PV charger verify the availability and correctness of the proposed method.
關鍵詞：光伏系統，最大功率點跟蹤，蓄電池充電
Keywords: photovoltaic system, Maximum power point tracking, Battery charging