在簡單的(de)太陽(yang)電(dian)(dian)(dian)池，蓄(xu)電(dian)(dian)(dian)池系統中，控(kong)制器(qi)的(de)作(zuo)用(yong)是保護蓄(xu)電(dian)(dian)(dian)池，避免過(guo)充，過(guo)放。若光伏電(dian)(dian)(dian)站并網供電(dian)(dian)(dian)，控(kong)制器(qi)則(ze)需(xu)要有自動(dong)監(jian)測(ce)、控(kong)制、調節、轉(zhuan)換等多種功能。如果(guo)負(fu)(fu)載用(yong)的(de)是交(jiao)(jiao)流電(dian)(dian)(dian)，則(ze)在負(fu)(fu)載和蓄(xu)電(dian)(dian)(dian)池間還應配備逆(ni)(ni)變(bian)器(qi)，逆(ni)(ni)變(bian)器(qi)的(de)作(zuo)用(yong)就是將方陣和蓄(xu)電(dian)(dian)(dian)池提供的(de)低壓直流電(dian)(dian)(dian)逆(ni)(ni)變(bian)成220伏交(jiao)(jiao)流電(dian)(dian)(dian)，供給負(fu)(fu)載使用(yong)。