獨立逆(ni)變器(qi)（Stand-aloneinverters）：用在(zai)獨立系統，光伏陣列(lie)為(wei)電(dian)(dian)(dian)(dian)池充電(dian)(dian)(dian)(dian)，逆(ni)變器(qi)以電(dian)(dian)(dian)(dian)池的(de)直流(liu)電(dian)(dian)(dian)(dian)壓為(wei)能(neng)量來源(yuan)。以往對于無變壓器(qi)，又要(yao)供電(dian)(dian)(dian)(dian)到電(dian)(dian)(dian)(dian)網的(de)系統會有(you)(you)一(yi)些疑慮，主(zhu)要(yao)是因(yin)為(wei)在(zai)直流(liu)電(dian)(dian)(dian)(dian)路和交(jiao)流(liu)電(dian)(dian)(dian)(dian)路之間沒有(you)(you)電(dian)(dian)(dian)(dian)隔離（galvanicisolation），集中式逆(ni)變器(qi)，若直流(liu)端(duan)故(gu)障，會有(you)(you)大電(dian)(dian)(dian)(dian)流(liu)流(liu)到交(jiao)流(liu)端(duan)。太陽能(neng)逆(ni)變器(qi)在(zai)電(dian)(dian)(dian)(dian)網電(dian)(dian)(dian)(dian)源(yuan)跳電(dian)(dian)(dian)(dian)時，可以提供交(jiao)流(liu)電(dian)(dian)(dian)(dian)源(yuan)給的(de)負載，因(yin)此需要(yao)有(you)(you)孤島效應(ying)保護(hu)機能(neng)。

光伏逆(ni)變器會用很大功率點（MPPT）的(de)技術來從(cong)太(tai)(tai)陽(yang)(yang)能(neng)(neng)板(ban)抽取大可能(neng)(neng)的(de)功率。太(tai)(tai)陽(yang)(yang)能(neng)(neng)電(dian)池的(de)太(tai)(tai)陽(yang)(yang)輻照度(du)、溫(wen)度(du)及總電(dian)阻之間有(you)復雜的(de)關系，因此輸(shu)出效(xiao)率會有(you)非(fei)線性的(de)變化，稱為電(dian)流-電(dian)壓曲線（I-Vcurve）。大功率點的(de)目的(de)就是在(zai)各環境下，微型光伏逆(ni)變器，針對太(tai)(tai)陽(yang)(yang)能(neng)(neng)模組(zu)的(de)輸(shu)出取様，贛(gan)州逆(ni)變器，產(chan)生一個（太(tai)(tai)陽(yang)(yang)能(neng)(neng)模組(zu)的(de)）負(fu)載電(dian)阻來獲得(de)大的(de)功率。

光(guang)伏逆(ni)變(bian)(bian)器(qi)(qi)(qi)的結構原理逆(ni)變(bian)(bian)器(qi)(qi)(qi)是(shi)一(yi)種由(you)半導(dao)體(ti)器(qi)(qi)(qi)件(jian)組成(cheng)(cheng)的電(dian)力(li)調(diao)整裝置，主要(yao)用于把直(zhi)(zhi)流(liu)(liu)電(dian)力(li)轉換成(cheng)(cheng)交流(liu)(liu)電(dian)力(li)。一(yi)般由(you)升(sheng)壓(ya)(ya)回(hui)路(lu)(lu)(lu)和逆(ni)變(bian)(bian)橋式(shi)(shi)回(hui)路(lu)(lu)(lu)構成(cheng)(cheng)。升(sheng)壓(ya)(ya)回(hui)路(lu)(lu)(lu)把太陽電(dian)池的直(zhi)(zhi)流(liu)(liu)電(dian)壓(ya)(ya)升(sheng)壓(ya)(ya)到逆(ni)變(bian)(bian)器(qi)(qi)(qi)輸(shu)出控制所需(xu)的直(zhi)(zhi)流(liu)(liu)電(dian)壓(ya)(ya)；逆(ni)變(bian)(bian)橋式(shi)(shi)回(hui)路(lu)(lu)(lu)則把升(sheng)壓(ya)(ya)后的直(zhi)(zhi)流(liu)(liu)電(dian)壓(ya)(ya)等(deng)價地轉換成(cheng)(cheng)常用頻率的交流(liu)(liu)電(dian)壓(ya)(ya)。逆(ni)變(bian)(bian)器(qi)(qi)(qi)主要(yao)由(you)晶體(ti)管(guan)等(deng)開(kai)關元件(jian)構成(cheng)(cheng)，通過有(you)規則地讓開(kai)關元件(jian)重復(fu)開(kai)-關（ON-OFF），使直(zhi)(zhi)流(liu)(liu)輸(shu)入變(bian)(bian)成(cheng)(cheng)交流(liu)(liu)輸(shu)出。當然，這樣單純地由(you)開(kai)和關回(hui)路(lu)(lu)(lu)產生的逆(ni)變(bian)(bian)器(qi)(qi)(qi)輸(shu)出波形并(bing)不實(shi)用。