Umphakeli okhethekile wokuguqula amafrikhwensi uyakukhumbuza: Kungani usebenzisa isiguquli samaza uma ushintsha injini yokufanisa yamathuluzi nenjini yokuguqula imvamisa? Hlobo luni lwezinguquko oluzolethwa ukunikezwa kwamandla kwe-frequency converter ezinhlelweni zezimoto? Nansi ingxoxo emfushane ngeziguquli zefrikhwensi zamamotho, ihlaziya ukuthi iziguquli zefrikhwensi zilethe kanjani izinguquko eziphazamisayo ezinhlelweni zokusebenza zezimoto.
Uhlolojikelele lweziguquli zemvamisa zamamotho
Cishe kunezinhlobo ezintathu zama-frequency converters amamotho
Uhlobo olujwayelekile lokusebenza
Umsebenzi oyisisekelo wokulawula isivinini sokuguqulwa kwemvamisa ye-v/f ungahlangatshezwana nezinhlelo zokusebenza ezijwayelekile ezinezidingo eziphansi zokunemba kokulawula isivinini kanye nokusebenza kokulawula ithoshi.
Uhlobo olusebenzayo oluphezulu
Ukulawulwa kwesivinini esishintshashintshayo se-V/F esinomsebenzi wokulawula itorque kuvame ukusetshenziselwa ukulayisha okungaguquki kwe-torque kumakheshi.
Isilawuli se-Vector noma uhlobo lokulawula i-torque eqondile
Izinhlelo zokusebenza ezisebenza kahle ezifana nokugingqika kwensimbi nokwenza iphepha ezidinga ukusebenza okunamandla okuphakeme kufanele zisebenzise iziguquli zemvamisa yokulawula i-vector.
Isicelo se-frequency converter
Enkathini lapho ubuchwepheshe bokuguqula imvamisa babungakavuthwa, izinhlelo zokusebenza ezisebenza kahle kakhulu njengezifeni namaphampu amanzi zazifakwe kakhulu izinjini eziguquguqukayo ze-pole multi speed ezinezigaba ezintathu ezingasynchronous. Kodwa-ke, ngenxa yokulawulwa kwesivinini esinyatheliwe, akukwazanga ukuzuza ukulawulwa kwejubane elibushelelezi olubanzi, ingasaphathwa eyokwenza ukusebenza kahle. Namuhla, iziguquli zefrikhwensi zisetshenziswa kakhulu, futhi amamotho okuguqula imvamisa aklanyelwe ngqo imithwalo efana namafeni namaphampu angagcina amazinga aphezulu okusebenza kukagesi njengokusebenza kahle kanye nesici samandla kulo lonke uhla lwesivinini ngokusebenzisa ukwakheka okuhle.
Amaleveli amathathu okweqa komthwalo noma umthetho wokuphumayo wamafeni, amaphampu, njll
Izindlela zokulungisa zendabuko. Ngokulungisa ukuvuleka kwe-inlet noma i-outlet baffle kanye ne-valve ukuze kulawulwe ukuhlinzekwa komoya kanye namanzi, amandla okufakwayo aphezulu futhi inani elikhulu lamandla lisetshenziswa enqubweni yokungenela ye-baffle ne-valve.
Imoto eguquguqukayo ye-pole multi speed yesigaba sesithathu esynchronous enokulawulwa kwesivinini esilinganiselwe. Uma isebenza ngomthwalo ogcwele, i-variable pole multi speed yesigaba sesithathu se-asynchronous motor isebenza ngesivinini esikhulu; Lapho umthamo womoya noma ukunikezwa kwamanzi kudinga ukulungiswa, injini ishintshela ekusebenzeni kwesivinini esimaphakathi noma esiphansi, okuholela ekuncipheni okukhulu kwamandla okufaka kanye nokuzuza imiphumela ebaluleke kakhulu yokonga amandla.
Ukulawulwa kwejubane lokuvama okuguquguqukayo kwamamotor ezigaba ezintathu asynchronous anokulawulwa kwesivinini esingenasinyathelo. Uma usebenzisa ukulawulwa kwesivinini esishintshashintshayo, uma isidingo sezinga lokugeleza sincishisiwe, imfuneko ingahlangatshezwana naye ngokunciphisa isivinini sephampu noma ifeni. Imvamisa, injini yefrikhwensi ezinikele yalolu hlelo lokusebenza ithuthukise izinkomba zokusebenza phezu kwebanga elibanzi lesivinini, ngesilinganiso esiphezulu esingaguquki "sezinga lokugeleza/ukusetshenziswa kwamandla".
Isiqalo esithambile kanye nohlelo lokusebenza lokuguqula imvamisa kazibuthe unomphela
Ama-asynchronous motors aqhutshwa ama-frequency converters, angafinyeleli nje kuphela ukulawulwa kwesivinini esingenasinyathelo, kodwa futhi alawule ukuqala kwamandla enjini ngaphakathi kwebanga elingaphansi kokuphindwe kabili kwamanje okulinganiselwe, futhi i-torque yokuqala ingafinyelela cishe kabili i-torque elinganiselwe. Ngakho-ke, ayikho inkinga yokuqala yezigaba ezintathu ze-asynchronous motors eziqhutshwa iziguquli zemvamisa, futhi isiqalo esithambile sokusebenza okuphezulu kuyisici sazo semvelo.
Amamothoritha azibuthe asebenza unomphela asebenza kahle, njengamamotho kamazibuthe emoto yamandla amasha kanye nezinjini zikazibuthe ezishayela umkhumbi unomphela, zonke zishayelwa iziguquli zefrikhwensi. Izinhlelo ezinjalo ngokuvamile zisebenzisa iziguquli zemvamisa njengamamojula wamandla okushayela akhethekile ahlanganiswe kakhulu, akhiwe ngendlela ehlangene nomzimba wemoto ukuze akhe umshini ozibuthe ohambisanayo we-synchronous motor.
I-variable frequency drive inwebise imikhakha yokusetshenziswa kwamamotho, yephula imithetho eminingi yokuklama, efana nezinjini zomoya zokushayela okuqondile ezinesivinini esiphansi afinyelele amashumi noma amakhulu ama-revolutions, ama-spindles anesivinini esiphezulu afinyelela kumashumi ezinkulungwane zama-revolutions, kanye nezinjini ezikhethekile zokushayela izimoto. Ngokuthuthukiswa kwezinhlelo zokusebenza nokuthuthukiswa okuqhubekayo kwezidingo zobungcweti, iziguquli zemvamisa zamamotho nakanjani zizothuthukela ezinkombandlela ezinezinhlangothi eziningi ezifana nokusebenza okuphezulu kwendawo yonke, ukuhlanganiswa okukhethekile kwe-electromechanical, kanye nezinhlelo zokusebenza ezithuthukile ezihlakaniphile, ezikhuthaza ukuqamba okusha okuqhubekayo kanye nokuthuthukiswa kwemiqondo yokuklama izimoto kanye nokukhiqizwa kwezimoto.