Injongo yedivayisi yempendulo yamandla emishini iwukuguqula amandla emishini (amandla amancane, amandla e-kinetic) emlayishweni onyakazayo abe ugesi (ugesi ovuselelekayo) ngedivayisi yempendulo yamandla bese uyibuyisela kugridi ye-AC ukuze isetshenziswe ezinye izisetshenziswa zikagesi eziseduze, ukuze isistimu yokudonsa imoto idle ugesi osuka kugridi ngesikhathi seyunithi, ngaleyo ndlela izuze umphumela wokonga ugesi.
Thatha ilifti kanye nedivayisi yempendulo yamandla njengesibonelo. Kunezimo ezine zokusebenza lapho ikheshi lisebenza: (1) imoto engenalutho ikhuphuka futhi umthwalo ogcwele wehla, okungukuthi, imoto noma uhlangothi olulula lomthwalo luyakhuphuka, lena inqubo yokukhulula amandla angaba khona ohlelweni, ugandaganda usebenza esimweni sokuphehla ugesi. (2) imoto engenalutho iyehla futhi umthwalo ogcwele ukhuphuka, okungukuthi, imoto noma uhlangothi olulula lomthwalo luyawa, yilapho amandla anamandla esistimu ekhula, ugandaganda usebenza esimweni sikagesi. (3) lapho ilifti ifika phansi lapho ibhuleki lokusheshisa likhona, uhlelo lukhulula amandla aguquguqukayo, ugandaganda nawo uyasebenza esimweni sokuphehla amandla.
Lapho ilifti isebenza ngaphansi kwezimo (1), (3) zokusebenza, ugandaganda usebenza esimweni sokukhiqiza amandla, amandla akhiqiziwe aguqulelwa kugesi we-DC ebhodini lomama le-DC ngenjini kagesi kanye nesiguquli sefrikhwensi. Lawa mandla agcinwe okwesikhashana ku-capacitor enkulu yesekethe ye-DC yesiguquli semvamisa. Isistimu yempendulo yamandla iwukuguqula ugesi we-DC ogcinwe ku-capacitor enkulu yohlangothi lwe-DC lwekheshi ukuya ku-AC futhi ubuyele kugridi yomsebenzisi ukuze usetshenziswe ezinye izisetshenziswa zikagesi eziseduze.
Lokhu kufana nesistimu yethu yokuphakelwa kwamanzi kampompi: siqoqa amanzi kampompi avuzayo futhi siwahlunge ukuze ahlangabezane nezindinganiso zamanzi okuphuza. Ngokusebenzisa iphampu enomfutho, lawa manzi athunyelwa endaweni yokudonsa amanzi empompini noma endaweni yokugcina amanzi bese esetshenziswa futhi. Uma la manzi ebalelwa ngaphansi kuka-5% wawo wonke amanzi asetshenziswa esakhiweni, ngeke abuyele epayipini elikhulu lamanzi kampompi ngoba asetshenziswa abanye abasebenzisi (umsebenzisi oseduze) ngaphambi kokuba abe nesikhathi sokubuyela epayipini elikhulu.
Le ngxenye kagesi ngeke ibuyele kugridi yamandla kagesi, ngoba le ngxenye kagesi ingamaphesenti angama-20-50 kuphela kagesi osetshenziswa ikheshi, ehlanganisa ngaphansi kuka-5% kagesi osetshenziswa yisakhiwo sonke. Izosetshenziswa ezinye izinto zikagesi (izibani, amakhompyutha, isimo somoya, iziqandisi, njll.).