基于電流直接控制的光伏電池最大功率點(diǎn)跟蹤策略

在傳統(tǒng)的光伏系統(tǒng)最大功率點(diǎn)跟蹤（MPPT）策略中，擾動(dòng)觀測(cè)法是檢測(cè)系統(tǒng)的輸入電壓電流，計(jì)算其輸入功率并使其達(dá)到最大。本文在分析了光伏電池特性及數(shù)學(xué)模型的基礎(chǔ)上，提出了一種以系統(tǒng)輸出電流最大為目標(biāo)、不依賴光伏電池輸出特性檢測(cè)的最大功率點(diǎn)跟蹤策略。最后，通過電流型光伏并網(wǎng)逆變器和光伏充電器的實(shí)驗(yàn)結(jié)果，該方案的可行性和正確性得到了驗(yàn)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(guān)鍵詞：光伏系統(tǒng)，最大功率點(diǎn)跟蹤，蓄電池充電
Keywords: photovoltaic system, Maximum power point tracking, Battery charging