Umkhiqizo wempendulo yokulungisa, ovame ukwaziwa nge-AFE (Active Front End), usebenzisa izingxenye zamandla e-IGBT, ngakho-ke isekethe yawo yehadiwe iyafana nesiguquli. Umehluko wukuthi okokufaka kwayo yi-AC kanti okukhiphayo yi-DC. Ngenxa yokuthi itholakala ohlangothini lokufakwa kwamandla kagesi, ibizwa ngokuthi ingaphambili. Inemisebenzi emibili: ukulungisa kanye nempendulo. Iyunithi yempendulo yokulungisa ingakwazi ukuphendula ngesikhathi nangempumelelo amandla e-kinetic noma okungenzeka aguqulwe esuka emshinini wokukhiqiza ukuya kugridi yamandla, okonga ugesi ngempumelelo; Kungakhathaliseki ukuthi isesimweni sokulungiswa noma sempendulo, i-waveform ye-voltage elinganisiwe yeyunithi yempendulo yokulungisa i-sine waveform enokuqukethwe okuncane kwe-harmonic, futhi isici samandla siseduze noku-1, ngokuyisisekelo sisusa ukuphazamiseka kwe-harmonic kwesiguquli semvamisa kugridi yamandla futhi sizuza ngempela ukusetshenziswa kukagesi ovumelana nemvelo. Futhi ayithinteki kakhulu ukushintshashintsha kwamandla kagesi kugridi yamandla, enezici ezinhle kakhulu eziguqukayo. Ngisho nasezimeni zegridi yamandla ezingazinzile kakhulu, isilawuli sikagesi sisakwazi ukugcina i-DC link voltage. Kodwa uma i-AFE isetshenziswa ngokuhambisana nesiguquli semvamisa, ingxenye yokulungiswa kwesiguquli sefrikhwensi yasekuqaleni ayikwazi ukusebenza, futhi i-AFE ithatha indawo yengxenye yokuqala yokulungisa. Inkampani yethu ikhiqiza amayunithi empendulo e-PFA, anokusebenza okuthembekile nemiphumela ebalulekile yokonga amandla.
Imikhiqizo evamile yempendulo ngokuvamile ibhekisela kumadivayisi empendulo afanayo asebenzisa amadivayisi e-IGBT athuthukisiwe kanye nokulawula i-amplitude yesigaba ama-algorithms e-PWM ukuze kuthuthukiswe amandla okwehlisa isivinini nawokubhuleka eziguquli zefrikhwensi. Ngesikhathi esifanayo, amandla akhiqizwe injini ngesikhathi senqubo yokubhuleka kanye nokokufaka kusiguquli sefrikhwensi abuyiselwa kugridi yamandla, ngaleyo ndlela ahlangabezane nezidingo ezisebenzayo zokubhuleka zesiguquli sefrikhwensi futhi kugaywe kabusha ngaphezu kuka-97% wamandla kagesi avuselelwe. Imikhiqizo yezimpendulo efana nochungechunge lwe-PF, uchungechunge lwe-PFE, uchungechunge lwe-PFH, nochungechunge lwe-PSG konke kuyimpendulo efanayo. Idivayisi evamile yempendulo kanye nengxenye yokubuyisela kabusha yesiguquli sefrikhwensi yasekuqaleni isetshenziswa ngokuhambisana, ngezindleko eziphansi nokusebenza okuzinzile nokuthembekile.