光伏逆(ni)(ni)(ni)變(bian)(bian)器的(de)(de)結構(gou)原理逆(ni)(ni)(ni)變(bian)(bian)器是一(yi)種由(you)半導體(ti)器件組成(cheng)(cheng)的(de)(de)電(dian)(dian)力調整(zheng)裝置(zhi)，主(zhu)要用于把(ba)直(zhi)流(liu)(liu)電(dian)(dian)力轉(zhuan)換(huan)成(cheng)(cheng)交(jiao)流(liu)(liu)電(dian)(dian)力。一(yi)般由(you)升壓(ya)(ya)回路(lu)和逆(ni)(ni)(ni)變(bian)(bian)橋(qiao)式回路(lu)構(gou)成(cheng)(cheng)。升壓(ya)(ya)回路(lu)把(ba)太(tai)陽電(dian)(dian)池的(de)(de)直(zhi)流(liu)(liu)電(dian)(dian)壓(ya)(ya)升壓(ya)(ya)到逆(ni)(ni)(ni)變(bian)(bian)器輸(shu)(shu)出(chu)控(kong)制所需的(de)(de)直(zhi)流(liu)(liu)電(dian)(dian)壓(ya)(ya)；逆(ni)(ni)(ni)變(bian)(bian)橋(qiao)式回路(lu)則(ze)把(ba)升壓(ya)(ya)后的(de)(de)直(zhi)流(liu)(liu)電(dian)(dian)壓(ya)(ya)等價(jia)地(di)轉(zhuan)換(huan)成(cheng)(cheng)常用頻率(lv)的(de)(de)交(jiao)流(liu)(liu)電(dian)(dian)壓(ya)(ya)。逆(ni)(ni)(ni)變(bian)(bian)器主(zhu)要由(you)晶體(ti)管(guan)等開(kai)(kai)(kai)關元件構(gou)成(cheng)(cheng)，深圳逆(ni)(ni)(ni)變(bian)(bian)器，通過有規則(ze)地(di)讓開(kai)(kai)(kai)關元件重復開(kai)(kai)(kai)-關（ON-OFF），使直(zhi)流(liu)(liu)輸(shu)(shu)入變(bian)(bian)成(cheng)(cheng)交(jiao)流(liu)(liu)輸(shu)(shu)出(chu)。當然(ran)，戶用逆(ni)(ni)(ni)變(bian)(bian)器，這樣單(dan)純地(di)由(you)開(kai)(kai)(kai)和關回路(lu)產生的(de)(de)逆(ni)(ni)(ni)變(bian)(bian)器輸(shu)(shu)出(chu)波形并不實用。

光伏逆變(bian)器(qi)為(wei)(wei)光伏系(xi)統的(de)(de)(de)心臟眾所(suo)周知(zhi)，物理上(shang)把將直(zhi)流電(dian)能(neng)變(bian)換成交(jiao)流電(dian)能(neng)的(de)(de)(de)過(guo)程(cheng)稱為(wei)(wei)逆變(bian)，逆變(bian)器(qi)廠家，把實現逆變(bian)過(guo)程(cheng)的(de)(de)(de)裝置稱為(wei)(wei)逆變(bian)設備或逆變(bian)器(qi)，逆變(bian)器(qi)的(de)(de)(de)名稱由此而(er)來(lai)。逆變(bian)器(qi)為(wei)(wei)光伏系(xi)統的(de)(de)(de)一部分，又被(bei)叫做電(dian)源調整器(qi)、功率調節器(qi)。逆變(bian)器(qi)作(zuo)為(wei)(wei)光伏系(xi)統的(de)(de)(de)心臟，對于太陽能(neng)離網供電(dian)系(xi)統的(de)(de)(de)運(yun)行起著(zhu)重要的(de)(de)(de)作(zuo)用，光伏逆變(bian)器(qi)的(de)(de)(de)作(zuo)用就是把太陽能(neng)電(dian)池板所(suo)發的(de)(de)(de)直(zhi)流電(dian)轉化(hua)成家電(dian)使用的(de)(de)(de)交(jiao)流電(dian)。

光伏(fu)逆(ni)(ni)變(bian)(bian)器(qi)是(shi)光伏(fu)陣列系(xi)統中重要的系(xi)統平(ping)衡(BOS)之一，可(ke)以配合(he)一般交流(liu)供電(dian)(dian)(dian)(dian)(dian)的設備(bei)使(shi)用。太(tai)陽能并(bing)網(wang)逆(ni)(ni)變(bian)(bian)器(qi)是(shi)將電(dian)(dian)(dian)(dian)(dian)能反饋到(dao)電(dian)(dian)(dian)(dian)(dian)網(wang)，若電(dian)(dian)(dian)(dian)(dian)網(wang)斷電(dian)(dian)(dian)(dian)(dian)時(shi)，光伏(fu)逆(ni)(ni)變(bian)(bian)器(qi)，需快速(su)的切斷供電(dian)(dian)(dian)(dian)(dian)給電(dian)(dian)(dian)(dian)(dian)網(wang)的線(xian)路，這是(shi)美(mei)國國家電(dian)(dian)(dian)(dian)(dian)氣(qi)規范（NEC）的要求，以確保在斷電(dian)(dian)(dian)(dian)(dian)時(shi)，并(bing)網(wang)逆(ni)(ni)變(bian)(bian)器(qi)也(ye)會關閉，避免(mian)傷(shang)害維修電(dian)(dian)(dian)(dian)(dian)網(wang)的人(ren)員。太(tai)陽能逆(ni)(ni)變(bian)(bian)器(qi)中的太(tai)陽能系(xi)統主要由電(dian)(dian)(dian)(dian)(dian)池板，充電(dian)(dian)(dian)(dian)(dian)控(kong)制器(qi)，逆(ni)(ni)變(bian)(bian)器(qi)和電(dian)(dian)(dian)(dian)(dian)池組成。