【正文】 個描述逆變器在光伏模擬器給出的一個特定靜態(tài)特性曲線上，逆變器調(diào)節(jié)最大功率點(diǎn)的準(zhǔn)確性的術(shù)語。注： 和必須是同一時間的采樣值。 動態(tài)最大功率點(diǎn)跟蹤效率由于日照強(qiáng)度的變化，會導(dǎo)致逆變器運(yùn)行工作點(diǎn)改變，這是與靜態(tài)最大功率點(diǎn)跟蹤效率無關(guān)的。下面定義了動態(tài)最大功率點(diǎn)跟蹤效率的暫態(tài)特性計算方法，如下所示： 其中： 的采樣間隔； and 的采樣間隔。 附　錄　E （資料性附錄）逆變器動態(tài)最大功率點(diǎn)跟蹤效率的測試程序 測試程序動態(tài)最大功率點(diǎn)跟蹤效率的測試須依照下列程序進(jìn)行。輻照強(qiáng)度里的百分比表示的是以標(biāo)準(zhǔn)測試條件（STC）為參照的，即100%與25176。C時1000 W/m178。的輻照條件相對應(yīng)。圖13 低輻照強(qiáng)度和中等輻照強(qiáng)度之間變動時的測試程序圖 14 中等輻照強(qiáng)度和強(qiáng)輻照強(qiáng)度之間變動時的測試程序說明：n次循環(huán)，每個循環(huán)包括上升時間t1，在高值（值+H）上的駐留時間t2，下降時間t3和最后在低值（值+L）上的駐留時間t4。 10%50% PDCn 測試程序表 20 10%→50%動態(tài)最大功率點(diǎn)跟蹤試驗(yàn)（對評價MPPTdyn有效）輻照度區(qū)間W/m2區(qū)間大小W/m2間隔時間S100500400300循環(huán)次數(shù)步長W/m2/s上升時間S駐留時間S下降時間S駐留時間S間隔時間S20,5800108001032140010400101322001020010143133101331016580108010187571057101101040104010110142910291011020201020109001030131013107671050810810660合計15 939s04:25:39h 30%100% PDCn 測試程序表 21 30%→100%動態(tài)最大功率點(diǎn)跟蹤試驗(yàn)（對評價MPPTdyn有效）輻照度區(qū)間W/m2區(qū)間大小W/m2間隔時間S100500400300循環(huán)次數(shù)步長W/m2/s上升時間S駐留時間S下降時間S駐留時間S間隔時間S1010701070101 9001014501050101 5001020351035101 20010302310231096710501410141078010100710710640合計6 987s01:56:27h 緩慢變化情況下的開關(guān)機(jī)測試表 22輻照度區(qū)間W/m2區(qū)間大小W/m2間隔時間S100500400300循環(huán)次數(shù)步長W/m2/s上升時間S駐留時間S下降時間S駐留時間S間隔時間S1 98030980302 320合計2320s00:38:40h圖 15 并網(wǎng)逆變器的起動和停止的試驗(yàn)程序注：在非常低的輻照強(qiáng)度時，光伏模擬器的電壓變化是非?？斓?。另外，光伏方陣的模型在這樣低的輻照強(qiáng)度下也并未準(zhǔn)確定義。因此，測試時，試驗(yàn)可能要開始于某一個小的直流功率，%。 試驗(yàn)總持續(xù)時間、。=M(I$EZBVxRtjpfmc`0L*H!DXzTwQsioeka:73@N)J%GCWySuOqhnd 9。5~1=M(I$EYAVxRtjpflb`0K*H!DXzTvPsioeka:63@N)J%FZCWySuOqgmd 9。5~1+M(I$EYAUwRtjpflb^`0Kamp。G!DXzTvPrhoeka:62@N)J%FZBVySuOqgmc9。5~1+L*I$EYAUwQsjpflb^74`0Kamp。GCXzTvPrhndka:62=M)J%FZBVxRuOqgmc8。5~1+L*H!EYAUwQsioflb^73@0Kamp。GCWyTvPrhnd a:62=M(I%FZBVxRtjqgmc~1+L*H!DXAUwQsioelb^73@N)Kamp。GCWySuPrhnd 9。62=M(I$EZBVxRtjpgmc`0+L*H!DXzTwQsioeka^73@N)J%GCWySuOrhnd 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