Umphakeli weyunithi yempendulo uyakukhumbuza ukuthi kukhona iziguquli zefrikhwensi ezingadingi amayunithi okulungisa, ezaziwa ngokuthi iziguquli zefrikhwensi ze-AC-AC. Kodwa-ke, iningi lemakethe liqukethe iziguquli zemvamisa ze-AC-DC-AC, eziqukethe amayunithi okulungisa. Lena iphethini eyakhiwe izinga elithile lokuncintisana kwezobuchwepheshe nezimakethe. Iziguquli zefrikhwensi ye-AC-DC-AC ishibhile ukukhiqiza futhi zithembeke kakhulu futhi zivuthiwe ukuzisebenzisa, ngakho wonke umuntu uyazisebenzisa. Eqinisweni, lokhu kuphinde kuhambisane neminye imithetho yocwaningo lwabantu lwesayensi.
Isibonelo, amazwi ethu manje kufanele afakwe kudijithali, aguqulelwe abe amakhodi alula angu-0-1, bese edluliselwa ezindaweni ezikude ngaphambi kokuba abe imisindo yangempela. Ngenxa yokuthi izinto ezilula kulula ukuzilinganisela nokuzicubungula, sivamise ukwenza amajika ayinkimbinkimbi bese sisebenzisa izindlela zomugqa ukuze silinganisele futhi silingise izinqubo zomhlaba wangempela eziyinkimbinkimbi.
Isiguquli sefrikhwensi ye-AC-DC-AC siqale siguqule amandla e-AC sibe amandla e-DC, bese siwaguqulela emuva kumandla we-AC ngokunquma kwe-IGBT. Kulula ukucubungula amandla okokufaka e-DC ngesikhathi sokunqunywa ngoba aqondile. Ngokombono we-calculus, inqobo nje uma ihlukaniswe ngamabhulokhi amaningi amancane, umphumela wokuqongelela uyafana nalowo wegagasi le-sine. Amadivayisi e-IGBT angavulwa futhi avalwe kuphela, ngakho afaneleka kakhulu ukucubungula amasiginali webhulokhi.
Ngakho-ke okokuqala, vula i-AC ibe yi-DC, okungase kubonakale njengenqubo eyengeziwe, kodwa empeleni, 'ukulola ummese akugeji ukhuni lokusika', kulula kakhulu noma kunjalo. Ngaphezu kwalokho, amamojula okulungisa kabusha kanye nama-capacitor angamadivayisi kagesi endabuko futhi avuthiwe, ashibhile ngentengo, amakhudlwana kuphela ngosayizi.
Iziguquli zefrikhwensi ye-AC-DC-AC zivame kakhulu, ezihlanganisa isilungisi, isistimu yokuhlunga, kanye ne-inverter. Isilungisisi silungisa kabusha esilawulwa ngokugcwele esakhiwe ibhuloho lezigaba ezintathu ezingalawulwa kabusha noma i-transistor enamandla amakhulu, kuyilapho i-inverter iyisekhethi yebhuloho lezigaba ezintathu elakhiwe ama-transistors anamandla aphezulu. Umsebenzi wayo uphambene ncamashi nalowo we-rectifier, eshintsha amandla e-DC angashintshi abe yi-voltage eshintshwayo namandla e-AC.
Isiteji sokuhlunga esimaphakathi sisebenzisa ama-capacitor noma ama-reactor ukuhlunga i-voltage elungisiwe noma yamanje. Ngokwezigaba zokuhlunga ezimaphakathi ze-DC, iziguquli ze-AC-DC-AC zingahlukaniswa zibe izinhlobo ezimbili: uhlobo lwe-voltage nohlobo lwamanje. Ngenxa yezici ezahlukahlukene ezifana nezindlela zokulawula kanye nokwakhiwa kwehadiwe, ama-inverter ohlobo lwe-voltage asetshenziswa kabanzi. Asetshenziswa kuma-industrial automation frequency converter (esebenzisa isilawuli se-VVVF esiguquguqukayo se-voltage eguquguqukayo, njll.) kanye nezinto zamandla ezingaphazamiseki (i-UPS, kusetshenziswa isilawuli se-voltage esingaguquki se-CVCF) ku-IT nasezinkundleni zokuphakela amandla.
Yebo, akusho ukuthi ukuthuthukiswa kweziguquli ze-AC-AC kuphelile. Isiguquli sefrikhwensi ye-Matrix wuhlobo olusha lwesiguquli sefrikhwensi eqondile ye-AC-DC-AC, ehlanganisa ama-switch arrays ayisishiyagalolunye axhunywe ngokuqondile phakathi kokufaka nokukhiphayo kwezigaba ezintathu. Isiguquli se-matrix asinaso isixhumanisi se-DC esimaphakathi, futhi okukhiphayo kuqukethe amazinga amathathu anokuqukethwe okuvumelanayo okuphansi; Isifunda sawo samandla silula, sihlangene, futhi singakhipha i-sine load voltage ngefrikhwensi elawulekayo, i-amplitude, nesigaba; Isici samandla okufakwayo sesiguquli se-matrix siyalawuleka futhi singasebenza ngamaquadrants amane, nakuba iziguquli ze-matrix zinezinzuzo eziningi.
Kodwa-ke, phakathi nenqubo yokuguqulwa kwayo, akuvunyelwe ukushintshwa okubili ukuqhuba noma ukuvala ngesikhathi esisodwa, okunzima ukukusebenzisa. Kalula nje, i-algorithm ayivuthiwe. Umphumela omkhulu wokuhlehla kweziguquli ze-matrix amandla azo okukhipha amandla kagesi aphezulu kanye nokubekezelela i-voltage yedivayisi ephezulu. Ngaphezu kwalokho, nakuba ingadingi amayunithi okulungisa, inamadivayisi ashintshayo angu-6 ngaphezulu kuneziguquli zefrikhwensi ye-AC-DC-AC.