Umphakeli weyunithi yempendulo yamandla uyakukhumbuza ukuthi umsebenzi oyinhloko wesiguquli semvamisa ukulawula okokusebenza kokulawula kwemoto ye-AC ngokushintsha imvamisa yokunikezwa kwamandla okusebenza kwemoto. Uyazazi izinhlobo zeziguquli zemvamisa? Yimuphi umehluko phakathi kweziguquli zemvamisa ezithize zevekhtha kanye neziguquli zenhloso ejwayelekile?
Kunomehluko omkhulu phakathi kweziguquli zefrikhwensi ezithize ze-vector kanye neziguquli zefrikhwensi ezijwayelekile. Eyokuqala iwukunemba kokulawula okuphezulu, kanti eyesibili i-torque ephezulu ephumayo ngesivinini esiphansi.
Isiguquli sefrikhwensi yeVector:
Umgomo wokusebenza we-vector ethize ye-frequency converter uwukuqale uyilungise, bese uyiguqula ukuze uthole i-frequency ne-voltage oyifunayo.
Ubuchwepheshe bokulawula i-Vector busebenzisa uguquko oluhlanganisayo ukuze luguqule ngokulinganayo uhlelo lwezigaba ezintathu lube uhlelo lwezigaba ezimbili ze-MT, lubola ivekhtha yamanje ye-stator yenjini ye-AC ibe izingxenye ezimbili ze-DC (okungukuthi ingxenye kazibuthe nengxenye ye-torque), ngaleyo ndlela kufezwe umgomo wokulawula ngokuhlukana ukuguquguquka kazibuthe kanye netorque ye-AC motor, futhi ngaleyo ndlela ulawule umphumela omuhle ofanayo nowokuzuzwa kwe-DC.
I-Vector control, eyaziwa nangokuthi' control speed ', inomehluko othile encazelweni yayo engokoqobo.
Imodi yokulawula ye-V/F: Njengalapho ushayela, ukuvuleka kwe-throttle ezinyaweni zakho kuhlala kungashintshi, kuyilapho ijubane lemoto lishintsha nakanjani! Ngenxa yokuthi umgwaqo imoto ehamba kuwo awulingani, ukumelana nomgwaqo nakho kuyashintsha. Lapho ukhuphuka, ijubane lizohamba kancane, futhi lapho wehla, ijubane lizokhula, akunjalo? Ukuze uthole isiguquli se-frequency, inani lakho lokusetha imvamisa lilingana nokuvuleka kwe-throttle onyaweni lwakho ngenkathi ushayela, futhi ukuvulwa kwe-throttle kuyalungiswa ngesikhathi sokulawula i-V/F.
Indlela yokulawula i-Vector: Ingakwazi ukulawula imoto ukuze igcine isivinini esingaguquki ngangokunokwenzeka ngaphansi kwezinguquko ezimweni zomgwaqo, ukumelana, ukukhuphuka, ukwehla, nezinye izimo, ukuthuthukisa ukunemba kokulawula isivinini.
Isiguquli sefrikhwensi samazwe ngamazwe:
I-universal frequency converter yileyo engasetshenziswa kuyo yonke imithwalo. Kodwa uma kukhona isiguquli sefrikhwensi esizinikele, kusanconywa ukusebenzisa isiguquli esizinikezele. Iziguquli zefrikhwensi ezinikelwe zilungiswa ngokuya ngezimpawu zomthwalo, ngezimpawu zezilungiselelo zepharamitha ezilula, ukulawulwa okungcono kwesivinini, kanye nemiphumela yokonga amandla.
Ukukhetha okulungile kwesiguquli sefrikhwensi kubalulekile ekusebenzeni okujwayelekile kohlelo lokulawula. Lapho ukhetha isiguquli semvamisa, kuyadingeka ukuqonda ngokuphelele izici zomthwalo eziqhutshwa isiguquli semvamisa. Abantu bavame ukuhlukanisa imishini yokukhiqiza ibe yizinhlobo ezintathu ezenziwayo: umthwalo we-torque ongaguquki, umthamo wamandla ongaguquki, kanye nomthwalo wefeni/ipompo.
Ukulayisha njalo kwe-torque:
I-torque yokulayisha i-TL izimele ku-speed n, futhi i-TL ihlala ingashintshi noma icishe ibe njalo kunoma yisiphi isivinini. Isibonelo, imithwalo ye-friction efana namabhande okuthutha, izixube, ama-extruder, kanye nemithwalo engase ibe khona njengama-cranes nama-hoists, konke kungokwemithwalo ye-torque engashintshi.
Lapho isiguquli sefrikhwensi sishayela umthwalo onezici zetorque ezingaguquki, itorque ngesivinini esiphansi kufanele ibe nkulu ngokwanele futhi ibe nomthamo owanele wokugcwala. Uma ukusebenza okuzinzile ngesivinini esiphansi kuyadingeka, amandla okukhipha ukushisa kwamamotho ajwayelekile asynchronous kufanele acatshangelwe ukuze kugwenywe ukukhuphuka kwezinga lokushisa okweqile kwenjini.
Amandla ahlala njalo:
I-torque edingekayo yezinsimbi zokuphotha zamathuluzi omshini, izigayo eziginqikayo, imishini yamaphepha, nemigqa yokukhiqiza amafilimu epulasitiki njengamakhoyili kanye ne-uncoiler ngokuvamile ihambisana ngokuphambene nesivinini sokuzungeza, eyaziwa njengomthwalo wamandla ongaguquki. Impahla yamandla engapheli yomthwalo kufanele ikhawulelwe kuhlu oluthile lwezinguquko zejubane. Uma ijubane liphansi kakhulu, ngenxa yokulinganiselwa kwamandla emishini, i-TL ayikwazi ukukhuphuka ngokungenamkhawulo futhi iguqule ibe yimpahla ye-torque engaguquki ngesivinini esiphansi. Amandla angapheli kanye nezifunda ze-torque eziqhubekayo zomthwalo zinomthelela omkhulu ekukhethweni kwezinhlelo zokudlulisela. Lapho i-motor isesimweni sokulawulwa kwejubane lokuguquguquka njalo, i-torque ephezulu evumelekile evunyelwe ihlala ingashintshiwe, okungewokulawulwa kwejubane le-torque njalo; Ekulawulweni kwesivinini kazibuthe esibuthakathaka, i-torque ephezulu evunyelwe ilingana nesivinini, esingesokulawulwa kwesivinini samandla esingaguquki. Uma uhla lwe-torque engaguquki kanye nokulawulwa kwejubane lamandla okuhlala njalo kwemoto kagesi kuhambisana nobubanzi be-torque engaguquki namandla angapheli omthwalo, okungukuthi, esimweni "sokufanisa", umthamo wemoto kagesi kanye namandla okuguqula imvamisa kokubili kuncishisiwe.
Imithwalo yabalandeli nepompo:
Kubalandeli abahlukahlukene, amaphampu amanzi, namaphampu kawoyela, ukumelana okukhiqizwa umoya noma uketshezi ngaphakathi kwebanga elithile lejubane ngokuzungezisa kwe-impeller kucishe kulingane namandla esibili ejubane n. Njengoba isivinini sokujikeleza sincipha, ijubane lokujikeleza liyancipha libe namandla we-2. Amandla adingekayo kulo mthwalo alingana namandla wesithathu wejubane. Lapho ivolumu yomoya edingekayo kanye nezinga lokugeleza kuncipha, ukusebenzisa isiguquli sefrikhwensi ukulungisa ivolumu yomoya kanye nezinga lokugeleza ngokusebenzisa ukulawulwa kwesivinini kungawonga kakhulu ugesi. Ngenxa yokwanda okusheshayo kwamandla adingekayo ngesivinini ngesivinini esikhulu, esilingana namandla esithathu esivinini, ngokuvamile akunconywa ukusebenzisa imithwalo efana namafeni namaphampu ngaphezu kwemvamisa yamandla.