微式(shi)光(guang)伏(fu)逆(ni)(ni)(ni)變器(qi)是(shi)只配合單一太陽能(neng)模(mo)組運(yun)作的光(guang)伏(fu)逆(ni)(ni)(ni)變器(qi)，將太陽能(neng)模(mo)組的直(zhi)流(liu)電(dian)(dian)(dian)(dian)源轉換(huan)為(wei)(wei)交(jiao)流(liu)電(dian)(dian)(dian)(dian)源。其設計(ji)允許以(yi)模(mo)組的方式(shi)由多臺微式(shi)光(guang)伏(fu)逆(ni)(ni)(ni)變器(qi)獨(du)立(li)并聯運(yun)轉。光(guang)伏(fu)逆(ni)(ni)(ni)變器(qi)應(ying)同(tong)時(shi)給出當負載由零向100%變化時(shi)，該(gai)光(guang)伏(fu)逆(ni)(ni)(ni)變器(qi)輸出電(dian)(dian)(dian)(dian)壓的偏差(cha)百分率，通常稱為(wei)(wei)負載調整率。許多獨(du)立(li)逆(ni)(ni)(ni)變器(qi)也(ye)整合了電(dian)(dian)(dian)(dian)池(chi)充(chong)電(dian)(dian)(dian)(dian)器(qi)，可以(yi)用交(jiao)流(liu)電(dian)(dian)(dian)(dian)源為(wei)(wei)電(dian)(dian)(dian)(dian)池(chi)充(chong)電(dian)(dian)(dian)(dian)。一般這(zhe)種逆(ni)(ni)(ni)變器(qi)不會接觸到(dao)電(dian)(dian)(dian)(dian)網，因(yin)此也(ye)不需(xu)要(yao)孤島效(xiao)應(ying)保護機能(neng)。

光伏(fu)逆變(bian)(bian)(bian)器(qi)(qi)不(bu)只具有(you)(you)直(zhi)(zhi)(zhi)交流(liu)變(bian)(bian)(bian)換功(gong)(gong)用(yong)(yong)(yong)，還具有(you)(you)限制地發揚(yang)太陽電(dian)(dian)(dian)池功(gong)(gong)能(neng)的功(gong)(gong)用(yong)(yong)(yong)和(he)系(xi)(xi)(xi)(xi)(xi)統(tong)毛病維護(hu)(hu)功(gong)(gong)用(yong)(yong)(yong)。歸(gui)結(jie)起來有(you)(you)主(zhu)動(dong)運(yun)轉(zhuan)和(he)停機功(gong)(gong)用(yong)(yong)(yong)、功(gong)(gong)率(lv)跟蹤節(jie)制功(gong)(gong)用(yong)(yong)(yong)、防獨(du)自運(yun)轉(zhuan)功(gong)(gong)用(yong)(yong)(yong)（并網系(xi)(xi)(xi)(xi)(xi)統(tong)用(yong)(yong)(yong)）、主(zhu)動(dong)電(dian)(dian)(dian)壓(ya)(ya)調(diao)整(zheng)功(gong)(gong)用(yong)(yong)(yong)（并網系(xi)(xi)(xi)(xi)(xi)統(tong)用(yong)(yong)(yong)）、直(zhi)(zhi)(zhi)流(liu)檢測(ce)功(gong)(gong)用(yong)(yong)(yong)（并網系(xi)(xi)(xi)(xi)(xi)統(tong)用(yong)(yong)(yong)）、直(zhi)(zhi)(zhi)流(liu)接(jie)地檢測(ce)功(gong)(gong)用(yong)(yong)(yong)（并網系(xi)(xi)(xi)(xi)(xi)統(tong)用(yong)(yong)(yong)）。逆變(bian)(bian)(bian)器(qi)(qi)作為(wei)(wei)光伏(fu)發電(dian)(dian)(dian)系(xi)(xi)(xi)(xi)(xi)統(tong)內(nei)部重要的電(dian)(dian)(dian)氣設備(bei)，逆變(bian)(bian)(bian)器(qi)(qi)公司，其設備(bei)本身所配備(bei)的各類保(bao)護(hu)(hu)功(gong)(gong)能(neng)較為(wei)(wei)完善，光伏(fu)逆變(bian)(bian)(bian)器(qi)(qi)廠家，具體有(you)(you)直(zhi)(zhi)(zhi)流(liu)母線過(guo)(guo)電(dian)(dian)(dian)壓(ya)(ya)保(bao)護(hu)(hu)、交流(liu)過(guo)(guo)欠壓(ya)(ya)保(bao)護(hu)(hu)、交流(liu)頻率(lv)保(bao)護(hu)(hu)、極(ji)性反接(jie)保(bao)護(hu)(hu)、短路保(bao)護(hu)(hu)、孤島(dao)效(xiao)應保(bao)護(hu)(hu)、過(guo)(guo)溫保(bao)護(hu)(hu)、直(zhi)(zhi)(zhi)流(liu)過(guo)(guo)載保(bao)護(hu)(hu)等保(bao)護(hu)(hu)功(gong)(gong)能(neng)。

逆(ni)變(bian)(bian)器(qi)(qi)作(zuo)為(wei)光伏發電(dian)(dian)(dian)(dian)系統內部重要的電(dian)(dian)(dian)(dian)氣(qi)設備(bei)，其設備(bei)本身所配備(bei)的各類保(bao)(bao)(bao)(bao)護(hu)(hu)功能(neng)較(jiao)為(wei)完善(shan)，具(ju)體有(you)直流(liu)(liu)(liu)(liu)母(mu)線(xian)過電(dian)(dian)(dian)(dian)壓(ya)保(bao)(bao)(bao)(bao)護(hu)(hu)、交流(liu)(liu)(liu)(liu)過欠壓(ya)保(bao)(bao)(bao)(bao)護(hu)(hu)、交流(liu)(liu)(liu)(liu)頻率保(bao)(bao)(bao)(bao)護(hu)(hu)、極性反(fan)接(jie)保(bao)(bao)(bao)(bao)護(hu)(hu)、短(duan)路保(bao)(bao)(bao)(bao)護(hu)(hu)、孤(gu)島(dao)效應保(bao)(bao)(bao)(bao)護(hu)(hu)、過溫(wen)保(bao)(bao)(bao)(bao)護(hu)(hu)、直流(liu)(liu)(liu)(liu)過載保(bao)(bao)(bao)(bao)護(hu)(hu)等保(bao)(bao)(bao)(bao)護(hu)(hu)功能(neng)。許多獨(du)立逆(ni)變(bian)(bian)器(qi)(qi)也整合了(le)電(dian)(dian)(dian)(dian)池充電(dian)(dian)(dian)(dian)器(qi)(qi)，太(tai)(tai)陽能(neng)逆(ni)變(bian)(bian)器(qi)(qi)，可(ke)(ke)以用(yong)交流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)源為(wei)電(dian)(dian)(dian)(dian)池充電(dian)(dian)(dian)(dian)。一般這(zhe)種逆(ni)變(bian)(bian)器(qi)(qi)不會(hui)接(jie)觸(chu)到電(dian)(dian)(dian)(dian)網，因此(ci)也不需要孤(gu)島(dao)效應保(bao)(bao)(bao)(bao)護(hu)(hu)機能(neng)。很大功率點(dian)（MPPT）的技術來從太(tai)(tai)陽能(neng)板抽取(qu)大可(ke)(ke)能(neng)的功率。太(tai)(tai)陽能(neng)電(dian)(dian)(dian)(dian)池的太(tai)(tai)陽輻(fu)照度(du)、溫(wen)度(du)及總電(dian)(dian)(dian)(dian)阻之(zhi)間(jian)有(you)復雜的關系，因此(ci)輸(shu)出效率會(hui)有(you)非線(xian)性的變(bian)(bian)化(hua)，稱為(wei)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)-電(dian)(dian)(dian)(dian)壓(ya)曲線(xian)（I-Vcurve）。