Abahlinzeki bemishini yempendulo yamandla yeziguquli zefrikhwensi bakukhumbuza ukuthi ngokuthuthukiswa okuqhubekayo kokushintshashintsha kwezimboni, iziguquli zemvamisa nazo zisetshenziswe kakhulu. Ukongiwa kwamandla kanye nokuvikelwa kwemvelo kuwumgogodla wokuthuthukiswa komnotho wezimboni zaseChina. Nakuba beveza umkhombandlela wentuthuko esimeme yemboni yaseShayina, baphinde baqhubekisele phambili intuthuko esimeme yemboni yaseShayina yokushintsha ama-frequency converter, ngokuqhubekayo bandise isabelo sayo semakethe futhi babe yisisekelo esibalulekile sokuthuthukiswa komnotho wezimboni zaseShayina ngamandla okuthuthukisa aqinile.
Ukonga amandla okuvama okuguquguqukayo kusetshenziswa kakhulu ezimeni lapho kudingekile khona ukushintsha izici zomshini wokushayela ngokwenza izinguquko kujubane lamamotho e-AC ukuze kuhlangatshezwane nezidingo zenqubo yokukhiqiza, futhi kuvame ukusetshenziswa kumafeni namaphampu amanzi. Lapho injini ingasebenza kuphela ngesivinini esilinganiselwe, imishini yayo yokushayela ingasebenza kuphela ngesivinini esilinganiselwe esithile.
1. Ukulawulwa kwesivinini samamotho ajwayelekile:
Ngokushintsha i-voltage yokufaka kanye nemvamisa ye-asynchronous motor enezigaba ezintathu, isivinini sayo singalawulwa. Uma injini evamile isebenza ngesivinini esiphansi, ukusebenza kahle kwefeni yokupholisa kuyehla futhi izinga lokushisa liyenyuka. Ngakho-ke, umthwalo wemoto kufanele uncishiswe ngokuya ngemvamisa.
2. Iyakwazi ukusebenza ngesivinini esikhulu:
Imvamisa yokunikezwa kwamandla okujwayelekile ngu-50Hz, egxilile futhi engaguquki. Imvamisa yokuphuma kwesiguquli semvamisa ingafinyelela ku-650Hz (EH600A uchungechunge). Imvamisa yokukhipha ephezulu yochungechunge lwe-EH600H ingafinyelela ku-1500Hz.
Amamotho ajwayelekile awakwazi ukufeza isivinini esikhulu ngokukhulisa imvamisa, futhi amandla emishini nawo kufanele acatshangelwe. Ngesivinini esiphezulu, imvamisa yenkampani yenethiwekhi yesiguquli sefrikhwensi iphezulu, futhi isiguquli sefrikhwensi sidinga ukuncishiswa umthamo.
3. Iyakwazi ukuqala okuthambile nokuma okuthambile:
Isikhathi sokusheshisa nesokuncishiswa kwesiguquli semvamisa singasethwa ngokungafanele phakathi kwamasekhondi angu-0.1-6500.0. Isiguquli sefrikhwensi sidinga ukusethwa ngokusheshisa okufanele kanye nesikhathi sokunciphisa ngesikhathi sokusebenza.
4. Isitobhi sokuqala esisheshayo nesinembile:
I-current yokuqala incane, futhi injini ikhiqiza ukushisa okuncane. Amandla anquma ukusheshisa kanye nesikhathi sokunciphisa, futhi izinga lomthamo we-motor kanye ne-frequency converter kufanele lenyuswe ukuze kulungiswe ubudlelwano bokulinganisa phakathi kokusheshisa kanye nesikhathi sokunciphisa kanye nomthwalo.
5. Kulula ukufeza ukuzungeza phambili nokuhlehlisa:
Ukushintsha kwenziwa yi-IGBT, ngakho-ke ukulahlekelwa kwe-contactor yasekuqaleni kuyanyamalala futhi ukusebenza okuthembekile kokuxhumanisa kungenziwa. Uma isetshenziselwa amakheshi, kufanele kusetshenziswe injini enebhuleki, futhi umshini wokubamba kufanele unikezwe lapho ushintsha indlela.
6. Iyakwazi ukubhuleka kagesi:
Ngenxa yekhono lokuguqula amandla kagesi abe amandla kagesi ngaphakathi kwesiguquli semvamisa ngesikhathi sokwehla, injini izobhuleka ngokuzenzakalelayo. Ukusebenzisa i-DC braking motor ngesivinini esiyiziro kungamisa ngokushesha injini egijima ngokukhululeka. Isiguquli sefrikhwensi sinamandla angama-20% wokubhuleka kuphela. Lapho ukwandisa amandla okubhuleka, iyunithi eyengeziwe yokubhuleka kanye ne-resistor yokubhuleka kuyadingeka. Isiguquli sefrikhwensi eneyunithi yokubhuleka eyakhelwe ngaphakathi idinga kuphela isixhasi sangaphandle sokubhuleka.
7. Ukulawulwa kwesivinini sezimoto ezindaweni ezinokhahlo:
Ngenxa yokutholakala kwamamotho ezigaba ezintathu asynchronous motors, amamotho angaqhumeki, angaphansi kwamanzi, noma anomumo okhethekile angasetshenziswa kalula. Amamotho afakazela ukuqhuma kufanele ahambisane neziguquli zefrikhwensi ukuze kuhlolwe ukuqhuma kanye nezitifiketi. Ama-universal frequency converter akhiqizwa yinkampani yethu akuwona ubufakazi bokuqhuma.
8. Isiguquli sefrikhwensi singalawula isivinini samamotho amaningi:
Isiguquli semvamisa singalungisa isivinini samamotho amaningi ngasikhathi sinye. Isilinganiso samanje sesiguquli sefrikhwensi kufanele sibe sikhulu kunezikhathi ezingu-1.1 kunengqikithi yamanje yemoto. Ngemvamisa efanayo, ijubane lama-asynchronous motors lingahluka ngenxa yezimpawu nemithwalo ehlukene. Ngesikhathi esifanayo, i-motor ngayinye kufanele ivikelwe yi-relay overload yokushisa.
9. Umthamo wamandla ngesikhathi sokuqalisa kwemoto akudingeki ube mkhulu kakhulu:
Ngokungafani nesiqalo esiphezulu samanje (izikhathi ezi-5-6 kunenjini elinganiselwe) yokunikezwa kwamandla kagesi, isilinganiso esiphezulu semoto samanje ngesikhathi sokuqala kwefrikhwensi asikho ngaphezu kuka-100-150%.