描述
基于變換器輸出電流控制的最大功率點(diǎn)跟蹤法是在擾動(dòng)觀測(cè)法的基礎(chǔ)上,僅以變換器輸出電流作為判斷依據(jù)進(jìn)行最大功率點(diǎn)跟蹤,不僅可以省去兩個(gè)傳感器,而且無(wú)需乘法運(yùn)算,在繼承擾動(dòng)觀測(cè)法優(yōu)點(diǎn)的基礎(chǔ)上,進(jìn)一步降低系統(tǒng)成本,減輕單片機(jī)運(yùn)算負(fù)擔(dān)?;谧儞Q器輸出電流控制最大功率點(diǎn)跟蹤法通過(guò)周期性檢測(cè)并計(jì)算變換器輸出電流的有效值,實(shí)時(shí)調(diào)節(jié)擾動(dòng)方向,使得變換器輸出電流有效值始終維持最大可輸出電流,從而實(shí)現(xiàn)光伏陣列的最大功率輸出。該方法控制簡(jiǎn)單,響應(yīng)速度快,對(duì)傳感器精度要求不高,在天氣條件變化較快的場(chǎng)合也能達(dá)到很好的跟蹤效果。本研究在光伏發(fā)電系統(tǒng)的開(kāi)發(fā)和應(yīng)用中具有重要的科學(xué)研究意義和現(xiàn)實(shí)意義。
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