Abahlinzeki bamayunithi okubhuleka ama-frequency converter bakukhumbuza ukuthi ngenxa yezingcingo zenqubomgomo kahulumeni, ukukhuthazwa okuqinile kobuchwepheshe bokuguqula ama-frequency, kanye nokukhuthazwa okuqinile ngabathengisi abaguqulela ama-frequency, amanye amabhizinisi ezimboni alinganise ngokungaziwa ukusetshenziswa kweziguquli zefrikhwensi nokongiwa kwamandla nokonga ugesi. Kodwa-ke, ekusetshenzisweni okungokoqobo, ngenxa yezimo ezihlukene zokulawula izimboni, amabhizinisi amaningi aqaphela kancane kancane ukuthi akuzona zonke izindawo lapho ama-frequency converters asetshenziswa khona angonga amandla nogesi. Ngakho yiziphi izizathu zalesi simo futhi yimiphi imibono eyiphutha abantu abanayo mayelana nama-frequency converters?
1. Amadrayivu efrikhwensi aguquguqukayo angonga amandla uma esetshenziswa kuzo zonke izinhlobo zamamotho
Ukuthi isiguquli sefrikhwensi singafinyelela ukonga amandla kunqunywa izici zokulawula isivinini somthwalo waso. Emishinini eyi-centrifugal, amafeni, namaphampu amanzi, okungawemithwalo ye-quadratic torque, amandla okukhipha amandla enjini u-P ∝ Tn no-P ∝ n3 kufanele ahlangatshezwe, okungukuthi, amandla okukhiphayo kushafu yemoto alingana namandla esithathu esivinini. Kungabonakala ukuthi emithwalweni ye-quadratic torque, umphumela wokonga amandla weziguquli zemvamisa yiwona ogqame kakhulu.
Ngokulayishwa njalo kwe-torque, njengama-Roots blowers, i-torque izimele ngaphandle kwejubane. Ngokuvamile, i-exhaust outlet isethiwe futhi ilawulwa yi-valve. Uma ivolumu yomoya idlula isidingo, ivolumu yomoya eyeqile iyakhishwa ukuze kuzuzwe ukulungiswa. Kulokhu, ukulawulwa kwesivinini kungasetshenziswa ekusebenzeni, okungase futhi kuzuze imiphumela yokonga amandla. Ngaphezu kwalokho, ngenxa yemithwalo yamandla eqhubekayo, amandla azimele ngesivinini. Kulezi zimo, asikho isidingo sokusebenzisa isiguquli semvamisa.
2. Imibono eyiphutha mayelana nezindlela ezingalungile ekubalweni kokusetshenziswa kwamandla
Izinkampani eziningi zivame ukusebenzisa isinxephezelo samandla asebenzayo ngokususelwe emandleni asobala lapho zibala ukusebenza ngendlela yokonga amandla. Isibonelo, uma injini isebenza ngomthwalo ogcwele ngaphansi kwezimo zemvamisa yamandla, ukusebenza okulinganiselwe kungu-194A. Ngemuva kokusebenzisa ukulawulwa kwejubane lokuvama okuguquguqukayo, isici samandla ngesikhathi sokusebenza komthwalo ogcwele siyakhuphuka sibe cishe ku-0.99. Ngalesi sikhathi, isilinganiso samanje singu-173A. Isizathu sokuncipha kwamanje ukuthi i-capacitor yokuhlunga yangaphakathi yesiguquli semvamisa ithuthukisa isici samandla wesistimu.
Ngokusho kwesibalo samandla esibonakalayo, umphumela wokonga amandla umi kanje:
ΔS=UI=380×(194-173)=7.98kVA
Umthelela wokonga amandla cishe u-11% wamandla alinganiselwe enjini.
Eqinisweni, amandla abonakalayo S angumkhiqizo we-voltage kanye namanje. Ngaphansi kwezimo ezifanayo ze-voltage, ushintsho kumandla abonakalayo lulingana noshintsho lwamanje. Uma kucatshangelwa ukusabela kwesistimu kumjikelezo, amandla abonakalayo awameleli ukusetshenziswa kwamandla kwangempela kwemoto, kodwa amele umthamo omkhulu wokukhipha ngaphansi kwezimo ezifanele. Ukusetshenziswa kwamandla kwangempela kwenjini kuvame ukuvezwa njengamandla asebenzayo. Ukusetshenziswa kwamandla kwangempela kwemoto kunqunywa injini nomthwalo wayo. Ngemva kokwandisa isici samandla, umthwalo we-motor awushintshi, futhi ukusebenza kahle kwe-motor nakho akushintshi. Ngakho-ke, ukusetshenziswa kwamandla kwangempela kwemoto ngeke kushintshe. Ngemva kokwandisa isici samandla, kwakungekho ushintsho esimweni sokusebenza kwemoto, i-stator yamanje, imisinga esebenzayo futhi esebenzayo. Ngakho-ke isici samandla sithuthukiswa kanjani? Isizathu sise-capacitor yokuhlunga ngaphakathi kwesiguquli se-frequency, futhi ingxenye yokusetshenziswa kwemoto amandla asebenzayo akhiqizwa i-capacitor yokuhlunga. Ukuthuthukiswa kwesici samandla kunciphisa okokufaka kwangempela kwamanje kwesiguquli semvamisa, futhi kunciphisa ukulahleka komugqa nokulahlekelwa kwe-transformer yegridi yamandla. Esibalweni esingenhla, nakuba amandla angempela asetshenziswa ekubaleni, amandla abonakalayo abalwa esikhundleni samandla asebenzayo. Ngakho-ke, ukusebenzisa amandla abonakalayo ukubala imiphumela yokonga akulungile.
3. Njengomjikelezo we-elekthronikhi, isiguquli semvamisa ngokwaso siphinde sisebenzisa amandla
Kusukela ekubunjweni kwe-converter ye-frequency, kungabonakala ukuthi isiguquli se-frequency ngokwayo sineziyingi ze-electronic, ngakho-ke sisebenzisa amandla ngesikhathi sokusebenza. Yize idla kancane uma iqhathaniswa nezinjini ezinamandla, ukusetshenziswa kwayo kwamandla kuyiqiniso elihlosiwe. Ngokwezibalo zochwepheshe, amandla aphezulu okuzisebenzisa isiguquli sefrikhwensi cishe ngo-3-5% wamandla aso alinganiselwe. I-air conditioner engu-1.5-horsepower idla ama-watts angu-20-30 kagesi, okulingana nokukhanya okuqhubekayo.
Kafushane, kuyiqiniso ukuthi iziguquli zemvamisa zinemisebenzi yokonga amandla uma zisebenza ngobuningi bamandla, kodwa imfuneko yazo yilezi: okokuqala, amandla aphezulu kanye nokuba yisiphepheli/umthwalo wepompo; Okwesibili, idivayisi ngokwayo inomsebenzi wokonga amandla (ukusekelwa kwesofthiwe); Okwesithathu, ukusebenza okuqhubekayo kwesikhathi eside. Lezi izimo ezintathu lapho isiguquli sefrikhwensi singabonisa imiphumela yokonga amandla.