Maqaal uu qoray Chris Kinsfather |Mar 20, 2017 |Wadayaasha AC |
Dunida xakamaynta mootada waxay noqon kartaa jahawareer hubaal.Marka la isweydaarsado ereyada, macnaha dhabta ah ee VFD (Variable Frequency Drive) mararka qaarkood waxaa lagu khaldami karaa ereyga INVERTER.Si loo fahmo sababta iibsashada VFD u noqon karto ama u noqon karto xalka ugu fiican adiga waxaan rabnaa inaan ku bilowno qeexid kooban oo sahlan oo lagu fahmi karo waxa VFD runtii yahay.
VFD waa labadaba qalab wax-is-daba-marin ku salaysan koronto iyo koronto oo leh ujeeddo loogu talagalay:
● Qaadashada tamarta AC ee dhinaca sahayda
● Awooddaas oo loo rogo danab DC ah
● Ku kaydinta danabkaas VFD
Isticmaalka tignoolajiyada gudaha ee teknoolojiyadda beddelka degdegga ah ee loo yaqaan IGBT'S taasoo abuuri doonta qaab 'mawjadda sine' oo kale ah taas oo lagu maamuli karo iyadoo "loo beddelayo inta jeer ee 60 HZ ee caadiga ah" oo loo beddelo qiime beddel ah, taas oo beddeleysa xawaaraha 3 weji inductive ama mararka qaarkood nooca PM.
Ma fududa?Ugu yaraan saddexdii dhibcood ee ugu horreeyay waxay sameeyeen… laakiin tani waa halka ay arrimuhu ku yara qallali karaan.In kasta oo ay run tahay in VFD ay "rogto" khadka AC ee hadda jira, waxa ay soo saarto VFD maaha mawjad saafi ah oo AC ah.Maxaan uga jeedaa tan?Tani waa halka aan u muuqanno inaan la kulanno jahawareer.Waa wax la aaminsan yahay in VFD ay soo saarto mowjad saafi ah oo AC sine ah oo la mid ah ROTARY PHASE COVERTER (RPC), taasoo aan ahayn xaaladdu.
Waxa dhabta ah ee VFD ay bixiso waa mawjad sine ah oo la ekaysiiyay iyada oo loo marayo (PWM) qaabaynta ballaca garaaca wadnaha.Wax soo saarka PWM dhab ahaantii waa uun mowjadda wax soo saarka DC ee la maamulay.Qaabkan la qariyay, wax la mid ah AC INDUCTION matoorka ma kala saari karo hirarka AC iyo DC.
Ujeedada oo dhan ee ka dambeysa qalabku maaha wax ka badan isbarbardhigga xawaaraha loo baahan yahay ee lagama maarmaanka u ah codsiyada habka.Tani waxay ka duwanaan kartaa habka gudbinta, nidaamka marawaxadaha/afuufiyaasha ee cadaadiska ama shuruudaha socodka, xawaaraha lagama maarmaanka u ah dunta mashiinada ee xarumaha mashiinada iyo noocyo kale oo badan oo codsiga processing ee loo isticmaalo dhammaan noocyada warshadaha.
Si kastaba ha ahaatee, sidoo kale waa sababtaas taas oo aan VFD loo isticmaali karin sidii "Sahayda AWOODDA GUUD" si loo xakameeyo mishiinka, gaar ahaan waa kontaroolaha xawaaraha mootada.Si xun u adeegsiga ujeedadan waxay u horseedi kartaa qalab iyo ama fashilka VFD.
Codsiyokee ayaan VFD-ga lagu isticmaali karin?
● Culaysyada iska caabinta ah (Alxannada, foornooyinka, kuleyliyeyaasha, iwm)
● Matoorada 1-aad ee caadiga ah oo koofiyado leh
● Qalab leh guddiga kontoroolka muhiimka ah iyo (qaybinta gudaha) waxay isku dayaan inay VFD u isticmaalaan koronto ahaan.
● Ku dalbashada VFD mishiin leh furayaasha si toos ah ugu xidhan matoorka (VFD waxay u baahan tahay in si toos ah loogu xidho matoorka) Wareegyada furan waxay abuuraan dab tusaale ahaan.
Marka la soo koobo, qofku waa inuu isticmaalo RPC si uu u xakameeyo mishiinka oo dhan haddii ay u baahan tahay awood 3-waji ah oo adeegso VFD haddii qofku runtii u baahan yahay xakamaynta xawaaraha mootada oo uu si toos ah ugu xidhan yahay matoorka induction AC kaas oo xamili kara qaabka hirarka sida ay bixiso Xakamaynta VFD.Isticmaalka macquulkan fudud, midna dib uma heli doono qalab cilladaysan.
Chris Kinsfather
Waqtiga boostada: Oct-19-2022