Kev siv ntau yam ntawm hluav taws xob lub cev muaj zog

Ntawm ntau hom hluav taws xob motors, feem ntau siv yog AC asynchronous motor (tseem hu ua induction motor). Nws yog qhov yooj yim rau kev khiav lag luam, txhim khu kev qha hauv kev ua haujlwm, tus nqi- zoo, thiab cov qauv tsim muaj zog, tab sis nws muaj lub zog qis thiab kev tswj ceev ceev. Rau siab- muaj peev xwm, qis- kev siv hluav taws xob ceev, cov motors synchronous (saib synchronous lub cev muaj zog) feem ntau ua haujlwm. Synchronous motors tsis yog tsuas yog khav theeb lub zog loj xwb tab sis kuj tseem muaj kev ceev ntawm kev thauj khoom loj, txiav txim siab los ntawm daim phiaj zaus. Lawv ua haujlwm nrog ntau dua stability. Hauv cov xwm txheej xav tau dav - tswj kev ceev, DC motors nquag siv. Txawm li cas los xij, lawv muaj cov commutators, cov txheej txheem nyuaj, cov nqi siab, thiab kev saib xyuas cov nyom, ua rau lawv tsis haum rau qhov chaw hnyav. Txij li thaum xyoo 1970, kev nce qib hauv hluav taws xob hluav taws xob tau ua tiav AC lub cev muaj zog tswj kev tswj hwm thev naus laus zis, ua rau txo qis cov khoom siv thiab ua rau nws siv dav. Lub zog ntsuas ntawm lub cev muaj zog yog hais txog qhov siab tshaj plaws ntawm cov khoom siv hluav taws xob uas nws tuaj yeem txhawb nqa raws li lub luag haujlwm ntawm lub voj voog (nruam, luv- lub sijhawm, lossis kev ua haujlwm tsis sib xws) yam tsis muaj cua sov, thiab kev ua haujlwm tsis ua haujlwm yuav tsum ua raws li cov npe tshwj xeeb. Thaum lub sijhawm ua haujlwm, nws yog qhov tseem ceeb kom phim cov yam ntxwv ntawm lub cev muaj zog nrog kev ua haujlwm kom tsis txhob khiav tawm lossis nres. Lub tshuab hluav taws xob siv hluav taws xob dav dav, los ntawm milliwatts mus rau megawatts. Lawv txoj haujlwm thiab kev tswj tau yooj yim heev, muaj tus kheej - pib, acceleration, braking, thim rov qab, thiab tuav lub peev xwm. Feem ntau, lub cev muaj zog tso tawm lub zog sib txawv nrog kev sib hloov ceev thaum tswj kev ceev.

High-cov motors ua tau zoo tuaj yeem hloov JO2 series motors nrog Y series AC asynchronous motors yam tsis muaj kev txwv loj los ntawm hom lub cev muaj zog. Yog li ntawd, txhua daim ntawv thov uas muaj AC asynchronous motors tuaj yeem hloov nrog Y series motors. Lub peev xwm ua lag luam ntawm Yx series motors yog txwv los ntawm lawv lub peev xwm. Raws li txoj cai, AC asynchronous motors hauv qab 90kW tuaj yeem hloov tau los ntawm kev ua haujlwm siab -Yx series motors. Lub peev xwm nruab ntawm AC asynchronous motors qis dua 90kW nyiaj rau kwv yees li 30% ntawm tag nrho AC asynchronous lub cev muaj peev xwm.

Xyoo kaum xyoo dhau los, tsoomfwv Suav tau cog lus los txhawb kev tswj hwm lub cev muaj zog, uas tau txais kev pom zoo los ntawm ntau yam kev lag luam. Raws li cov qauv kev tshawb fawb los ntawm cov sectors xws li roj av, lub zog, cov khoom siv hauv tsev, steel, nonferrous hlau, thee, chemicals, papermaking, thiab textiles, cov roj av, cov khoom siv hauv tsev, thiab tshuaj lom neeg kev lag luam tau ua tiav cov ntawv thov kev ceev ceev. Ntawm 400 lab kW ntawm lub cev muaj zog, kwv yees li 50% kev paub txog kev hloov pauv, nrog 30% ntawm cov kev hloov pauv no tau hais los ntawm kev tswj hwm lub cev muaj zog. Yog li ntawd, xav txog kev ua lag luam muaj peev xwm ib leeg, muaj peev xwm ua lag luam txog li 60 lab kW ntawm kev ceev - tswj cov motors. Tuam Tshoj lub peev xwm tag nrho ntawm ntau lub cev muaj zog tau tshaj 400 lab kW, nrog asynchronous motors suav txog li 90%, me thiab nruab nrab- cov motors loj ua rau kwv yees li 80%, thiab cov motors tsav kiv cua, twj, compressors, thiab cov tshuab zoo sib xws muaj nyob ib ncig ntawm 130 lab kW. Cov me me thiab nruab nrab- cov motors loj tam sim no suav nrog ntau dua 152 series, 842 hom, thiab ntau dua 4,000 qhov tshwj xeeb. Nyob rau hauv xyoo tas los no, cov tuam tsev muaj feem cuam tshuam xws li kev lag luam tshuab tau txhawb nqa lub zog txuag lub zog, txhim kho cov koom haum tshawb fawb thiab cov lag luam los tsim thiab tsim ntau lub zog-txuag motors. Cov kev cai tswjfwm tau raug tshaj tawm rau theem tawm 63 siab-zog- siv lub cev muaj zog thiab txhawb nqa 24 lub zog-txuag qauv qauv, ua tiav qee qhov txiaj ntsig. Cov khoom siv hluav taws xob no- txuag cov khoom lag luam feem ntau muab faib ua ob pawg: ib qho yog siab- cov motors ua tau zoo tsim los txhim kho lub cev muaj zog, thiab lwm yam yog ceev- tswj cov motors.

Brushless DC lub cev muaj zog muaj lub cev lub cev thiab lub zog tsav, ua rau nws yog cov khoom siv hluav taws xob sib xyaw ua ke. Lub stator windings ntawm lub cev muaj zog feem ntau txuas nrog peb -theem symmetrical hnub qub configuration, uas zoo ib yam li peb lub cev muaj zog asynchronous. Lub rotor ntawm lub cev muaj zog yog nruab nrog cov hlau nplaum ruaj khov. Txhawm rau txheeb xyuas qhov polarity ntawm lub cev muaj zog rotor, ib txoj hauj lwm sensor tau nruab rau hauv lub cev muaj zog. Lub tshuab tsav yog tsim los ntawm cov khoom siv hluav taws xob hluav taws xob thiab kev sib txuas ua ke, ntawm lwm tus, thiab nws cov haujlwm muaj xws li: txais pib, nres, thiab nres nres ntawm lub cev muaj zog los tswj nws txoj haujlwm; txais txoj hauj lwm sensor teeb liab thiab rau pem hauv ntej / thim rov qab teeb liab los tswj kev hloov ntawm lub hwj chim raj nyob rau hauv lub inverter choj, li no generating nruam torque; tau txais cov lus txib ceev thiab cov lus tawm tswv yim los tswj thiab kho qhov kev sib hloov ceev; thiab muab kev tiv thaiv thiab tso saib ua haujlwm, thiab lwm yam.

Txij li thaum brushless DC motors ua haujlwm nyob rau hauv tus kheej- tswj hom, lawv tsis xav tau ntxiv pib windings ntawm lub rotor zoo li synchronous motors nyob rau hauv kev sib txawv zaus ceev tswj, los yog lawv tsis muaj oscillations los yog stepping thaum lub sij hawm load hloov. Rau nruab nrab thiab me -muaj peev xwm brushless DC motors, cov hlau nplaum ruaj khov feem ntau yog tsim los ntawm siab -magnetic-zog tsis tshua muaj zog- ntiaj teb neodymium hlau boron (Nd-Fe-B) cov ntaub ntawv. Raws li qhov tshwm sim, tsis tshua muaj -lub ntiaj teb cov hlau nplaum ruaj khov brushless lub cev muaj zog yog ib lub thav duab me me dua peb-theem asynchronous motors ntawm tib lub peev xwm. Nyob rau hauv peb lub xyoos dhau los, kev tshawb fawb txog kev sib txawv ntawm cov kev cai ceev ceev rau asynchronous motors tau tsom ntsoov rau kev nrhiav txoj hauv kev los tswj lawv lub zog. Tsis tshua muaj - lub ntiaj teb cov hlau nplaum ruaj khov brushless DC motors yuav ua rau pom qhov zoo hauv kev tswj ceev vim lawv qhov dav dav, qhov loj me, kev ua haujlwm siab, thiab tsis tshua muaj kev ruaj khov- xeev ceev yuam kev. Brushless DC motors, tau txais cov yam ntxwv ntawm brushed DC motors thaum tseem ua haujlwm raws li cov khoom siv hloov pauv zaus, tseem hu ua DC zaus hloov pauv, nrog lub sijhawm lees paub thoob ntiaj teb yog BLDC. Nyob rau hauv cov nqe lus ntawm kev ua hauj lwm efficiency, tsawg- ceev torque, thiab ceev ceev, brushless DC motors outperform ib zaus converter nrog tswj technology, ua rau lawv tsim nyog ntawm kev lag luam mloog. Cov khoom lag luam twb tau tsim muaj peev xwm tshaj 55kW thiab tuaj yeem tsim tau txog li 400kW, hais txog cov kev xav tau ntawm kev lag luam rau kev txuag hluav taws xob thiab siab -kev ua tau zoo tsav kev daws teeb meem.