光伏逆變器(qi)不(bu)只具(ju)有直交流變換功(gong)(gong)用(yong)，還具(ju)有限制地發揚太(tai)(tai)陽電(dian)池功(gong)(gong)能的(de)(de)功(gong)(gong)用(yong)和系統毛病(bing)維護功(gong)(gong)用(yong)。一(yi)般KW級以下的(de)(de)逆變器(qi)的(de)(de)效(xiao)(xiao)率(lv)應(ying)為(wei)(wei)80%~85%;10KW級的(de)(de)效(xiao)(xiao)率(lv)應(ying)為(wei)(wei)85%~90%;更大功(gong)(gong)率(lv)的(de)(de)效(xiao)(xiao)率(lv)必須在90%~95%以上。很大功(gong)(gong)率(lv)點(dian)（MPPT）的(de)(de)技術來(lai)從(cong)太(tai)(tai)陽能板(ban)抽取(qu)大可能的(de)(de)功(gong)(gong)率(lv)。太(tai)(tai)陽能電(dian)池的(de)(de)太(tai)(tai)陽輻照度、溫度及(ji)總電(dian)阻之(zhi)間有復(fu)雜的(de)(de)關系，因此輸出效(xiao)(xiao)率(lv)會有非線性的(de)(de)變化，稱為(wei)(wei)電(dian)流-電(dian)壓曲線（I-Vcurve）。

太陽能逆(ni)(ni)變(bian)(bian)器(qi)(qi)(qi)可以(yi)(yi)分為(wei)以(yi)(yi)下(xia)幾(ji)類(lei)：獨立逆(ni)(ni)變(bian)(bian)器(qi)(qi)(qi)（Stand-aloneinverters）：用在獨立系(xi)統，光(guang)伏陣(zhen)列(lie)為(wei)電(dian)(dian)池(chi)(chi)(chi)充(chong)電(dian)(dian)，逆(ni)(ni)變(bian)(bian)器(qi)(qi)(qi)多(duo)少(shao)錢，逆(ni)(ni)變(bian)(bian)器(qi)(qi)(qi)以(yi)(yi)電(dian)(dian)池(chi)(chi)(chi)的直(zhi)流電(dian)(dian)壓(ya)(ya)為(wei)能量來源(yuan)。許多(duo)獨立逆(ni)(ni)變(bian)(bian)器(qi)(qi)(qi)也整合了電(dian)(dian)池(chi)(chi)(chi)充(chong)電(dian)(dian)器(qi)(qi)(qi)，可以(yi)(yi)用交流電(dian)(dian)源(yuan)為(wei)電(dian)(dian)池(chi)(chi)(chi)充(chong)電(dian)(dian)。一般(ban)這種逆(ni)(ni)變(bian)(bian)器(qi)(qi)(qi)不會(hui)接(jie)觸到(dao)電(dian)(dian)網，因(yin)此也不需(xu)(xu)要孤島效應保護機能。并(bing)網逆(ni)(ni)變(bian)(bian)器(qi)(qi)(qi)（Grid-tieinverters）：逆(ni)(ni)變(bian)(bian)器(qi)(qi)(qi)的輸出(chu)電(dian)(dian)壓(ya)(ya)可以(yi)(yi)回送到(dao)商用交流電(dian)(dian)源(yuan)，光(guang)伏逆(ni)(ni)變(bian)(bian)器(qi)(qi)(qi)廠(chang)家，因(yin)此輸出(chu)弦波需(xu)(xu)要和電(dian)(dian)源(yuan)的相(xiang)位、頻(pin)率及電(dian)(dian)壓(ya)(ya)相(xiang)同(tong)。并(bing)網逆(ni)(ni)變(bian)(bian)器(qi)(qi)(qi)會(hui)有安全設計，若未連接(jie)到(dao)電(dian)(dian)源(yuan)，會(hui)自動關閉輸出(chu)。若電(dian)(dian)網電(dian)(dian)源(yuan)跳(tiao)電(dian)(dian)，池(chi)(chi)(chi)州(zhou)逆(ni)(ni)變(bian)(bian)器(qi)(qi)(qi)，并(bing)網逆(ni)(ni)變(bian)(bian)器(qi)(qi)(qi)沒有備(bei)存供電(dian)(dian)的機能。

一般KW級以(yi)下的(de)逆變器(qi)的(de)效(xiao)率(lv)(lv)應為(wei)80%~85%;10KW級的(de)效(xiao)率(lv)(lv)應為(wei)85%~90%;更大(da)功(gong)率(lv)(lv)的(de)效(xiao)率(lv)(lv)必須(xu)在90%~95%以(yi)上。太陽(yang)能(neng)泵變頻器(qi)可以(yi)將太陽(yang)能(neng)模組產生的(de)直流(liu)電(dian)轉換(huan)為(wei)交流(liu)電(dian)去驅動沈水(shui)泵，不需要(yao)電(dian)池或是其他的(de)能(neng)量儲(chu)存設備。光(guang)伏逆變器(qi)不只(zhi)具有直交流(liu)變換(huan)功(gong)用(yong)，還具有限制地發(fa)揚太陽(yang)電(dian)池功(gong)能(neng)的(de)功(gong)用(yong)和(he)系統毛(mao)病維護功(gong)用(yong)。