逆(ni)變(bian)器(qi)(qi)(qi)(qi)作為(wei)光伏發電(dian)(dian)(dian)系統內部(bu)重要的(de)(de)(de)電(dian)(dian)(dian)氣(qi)設(she)備(bei)(bei)，其設(she)備(bei)(bei)本(ben)身所配(pei)備(bei)(bei)的(de)(de)(de)各類保(bao)(bao)護(hu)(hu)(hu)功(gong)能(neng)較為(wei)完善，江西逆(ni)變(bian)器(qi)(qi)(qi)(qi)，具體有(you)直流母線(xian)過(guo)電(dian)(dian)(dian)壓(ya)(ya)(ya)保(bao)(bao)護(hu)(hu)(hu)、交(jiao)流過(guo)欠壓(ya)(ya)(ya)保(bao)(bao)護(hu)(hu)(hu)、交(jiao)流頻(pin)(pin)(pin)率(lv)保(bao)(bao)護(hu)(hu)(hu)、極性反(fan)接(jie)保(bao)(bao)護(hu)(hu)(hu)、短路保(bao)(bao)護(hu)(hu)(hu)、孤島效應保(bao)(bao)護(hu)(hu)(hu)、過(guo)溫保(bao)(bao)護(hu)(hu)(hu)、直流過(guo)載(zai)保(bao)(bao)護(hu)(hu)(hu)等保(bao)(bao)護(hu)(hu)(hu)功(gong)能(neng)。高頻(pin)(pin)(pin)變(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)不是直接(jie)提供120V或240V的(de)(de)(de)AC電(dian)(dian)(dian)源，而是有(you)電(dian)(dian)(dian)腦控(kong)制(zhi)的(de)(de)(de)多(duo)步(bu)程序，讓電(dian)(dian)(dian)源轉換(huan)為(wei)高頻(pin)(pin)(pin)的(de)(de)(de)交(jiao)流電(dian)(dian)(dian)，再(zai)轉換(huan)為(wei)直流電(dian)(dian)(dian)，后再(zai)轉換(huan)為(wei)電(dian)(dian)(dian)源需要的(de)(de)(de)電(dian)(dian)(dian)壓(ya)(ya)(ya)及頻(pin)(pin)(pin)率(lv)。太陽能(neng)逆(ni)變(bian)器(qi)(qi)(qi)(qi)中的(de)(de)(de)太陽能(neng)系統主要由電(dian)(dian)(dian)池(chi)板(ban)，充電(dian)(dian)(dian)控(kong)制(zhi)器(qi)(qi)(qi)(qi)，逆(ni)變(bian)器(qi)(qi)(qi)(qi)和電(dian)(dian)(dian)池(chi)組成。

目前市面上的(de)(de)并網逆(ni)變(bian)(bian)(bian)器(qi)(qi)(qi)有(you)使用(yong)許多(duo)不同的(de)(de)技術，包括使用(yong)較(jiao)新的(de)(de)高頻變(bian)(bian)(bian)壓(ya)器(qi)(qi)(qi)、傳統(tong)的(de)(de)工頻變(bian)(bian)(bian)壓(ya)器(qi)(qi)(qi)，或(huo)是(shi)無變(bian)(bian)(bian)壓(ya)器(qi)(qi)(qi)的(de)(de)架構。一般KW級(ji)(ji)以(yi)下的(de)(de)逆(ni)變(bian)(bian)(bian)器(qi)(qi)(qi)的(de)(de)效(xiao)率(lv)應為80%~85%;10KW級(ji)(ji)的(de)(de)效(xiao)率(lv)應為85%~90%;更大功率(lv)的(de)(de)效(xiao)率(lv)必(bi)須在90%~95%以(yi)上。微式光伏逆(ni)變(bian)(bian)(bian)器(qi)(qi)(qi)是(shi)只配合單(dan)一太(tai)陽能(neng)模(mo)組(zu)運(yun)作的(de)(de)光伏逆(ni)變(bian)(bian)(bian)器(qi)(qi)(qi)，將太(tai)陽能(neng)模(mo)組(zu)的(de)(de)直流電源轉換為交流電源。其設計允許以(yi)模(mo)組(zu)的(de)(de)方(fang)式由多(duo)臺微式光伏逆(ni)變(bian)(bian)(bian)器(qi)(qi)(qi)獨(du)立并聯運(yun)轉。

太(tai)陽能(neng)(neng)泵變(bian)(bian)頻器一(yi)般會有(you)數個接(jie)口(kou)，光伏電(dian)站逆(ni)變(bian)(bian)器，可以允許太(tai)陽能(neng)(neng)模組(zu)陣列提供直(zhi)流(liu)電(dian)流(liu)，逆(ni)變(bian)(bian)器廠家，會有(you)一(yi)個接(jie)口(kou)輸(shu)(shu)出交流(liu)電(dian)壓，也可能(neng)(neng)會有(you)接(jie)水位感測器輸(shu)(shu)入的(de)接(jie)口(kou)。并網逆(ni)變(bian)(bian)器（Grid-tieinverters）：逆(ni)變(bian)(bian)器的(de)輸(shu)(shu)出電(dian)壓可以回(hui)送到商用(yong)交流(liu)電(dian)源(yuan)，太(tai)陽能(neng)(neng)逆(ni)變(bian)(bian)器，因此輸(shu)(shu)出弦波需要(yao)和電(dian)源(yuan)的(de)相位、頻率及電(dian)壓相同。大功(gong)率點的(de)目的(de)就是在(zai)各環境(jing)下，針對太(tai)陽能(neng)(neng)模組(zu)的(de)輸(shu)(shu)出取様，產生一(yi)個（太(tai)陽能(neng)(neng)模組(zu)的(de)）負(fu)載電(dian)阻(zu)來獲得大的(de)功(gong)率。