Kev piav qhia ntawm Brushless Motors

(BLDCM) yog tsim los ntawm lub hauv paus ntawm brushless DC motors, tab sis nws tsav tam sim no yog AC rau tsab ntawv; Brushless DC motors kuj tuaj yeem muab faib ua brushless speed motors thiab brushless torque motors. Feem ntau, muaj ob hom kev tsav tsheb tam sim no rau brushless motors, ib qho yog trapezoidal nthwv dej (feem ntau yog "square yoj"), thiab lwm yam yog sine yoj. Qee lub sij hawm lub qub hu ua DC brushless lub cev muaj zog, thaum lub tom kawg yog hu ua AC servo lub cev muaj zog, tshwj xeeb yog hom AC servo lub cev muaj zog.
Brushless DC motors feem ntau txais yuav "slender" qauv los txo qhov kev sib hloov inertia. Brushless DC motors yog me me nyob rau hauv qhov hnyav thiab ntim ntau dua li brushless DC motors, thiab cov kev sib hloov inertia tuaj yeem txo tau li ntawm 40-50%. Vim muaj teeb meem ua haujlwm nrog cov khoom siv hlau nplaum tas mus li, lub peev xwm dav dav ntawm brushless DC motors yog qis dua 100kW.
Hom lub cev muaj zog muaj qhov zoo linearity hauv cov neeg kho tshuab thiab cov yam ntxwv ntawm kev tswj hwm, kev nrawm nrawm, lub neej ua haujlwm ntev, kev saib xyuas yooj yim, tsis tshua muaj suab nrov, thiab tsis muaj teeb meem tshwm sim los ntawm txhuam. Yog li ntawd, hom lub cev muaj zog muaj peev xwm zoo rau kev siv hauv kev tswj hwm.
Lub stator winding ntawm lub tshuab hluav taws xob feem ntau ua rau hauv peb-theem symmetrical lub hnub qub kev sib txuas, uas zoo ib yam li peb-theem asynchronous lub cev muaj zog. Lub rotor ntawm lub tshuab hluav taws xob yog adhered nrog cov hlau nplaum ruaj khov, thiab txhawm rau txhawm rau txheeb xyuas qhov polarity ntawm lub cev muaj zog rotor, txoj hauj lwm sensor yog ntsia rau hauv lub cev muaj zog. Tus neeg tsav tsheb yog tsim los ntawm cov khoom siv hluav taws xob hluav taws xob thiab kev sib xyaw ua ke, thiab nws txoj haujlwm yog kom tau txais qhov pib, nres, thiab nres nres ntawm lub cev muaj zog los tswj qhov pib, nres, thiab nres ntawm lub cev muaj zog; Tau txais txoj hauj lwm sensor teeb liab thiab rau pem hauv ntej thiab thim rov qab cov cim los tswj lub on / off ntawm txhua lub hwj chim transistor nyob rau hauv inverter choj, generating nruam torque; Tau txais cov lus txib ceev thiab ceev cov lus tawm tswv yim los tswj thiab kho qhov ceev; Muab kev tiv thaiv thiab tso saib, thiab lwm yam.
Vim tias nws tus kheej tswj kev ua haujlwm ntawm brushless DC motors, lawv tsis ntxiv qhov pib windings rau lub rotor xws li synchronous motors uas pib nrog hnyav loads nyob rau hauv kev sib txawv zaus ceev tswj, los yog lawv tsis tsim oscillations thiab tawm ntawm cov kauj ruam thaum lub sij hawm tam sim ntawd load hloov.
Cov hlau nplaum tas mus li ntawm me me thiab nruab nrab-qhov loj me brushless DC motors feem ntau siv cov khoom siv hluav taws xob sib nqus siab tsis tshua muaj lub ntiaj teb neodymium hlau boron (Nd Fe B) cov khoom. Yog li ntawd, qhov ntim ntawm lub ntiaj teb tsis tshua muaj cov hlau nplaum tsis tshua muaj lub cev muaj zog yog txo los ntawm ib tus lej lej piv rau peb-theem asynchronous motors ntawm tib lub peev xwm.
Hauv peb caug xyoo dhau los, kev tshawb fawb txog kev sib txawv ntawm kev ceev ceev ntawm asynchronous motors thaum kawg tau tsom mus rau kev nrhiav txoj hauv kev los tswj lub zog ntawm asynchronous motors. Tsis tshua muaj lub ntiaj teb cov hlau nplaum ruaj khov brushless DC lub cev muaj zog yuav ua rau pom qhov zoo hauv kev tswj hwm kev ceev vim lawv txoj cai dav dav, me me, kev ua haujlwm siab, thiab kev ua yuam kev me me tsis tu ncua.
Brushless DC lub cev muaj zog, tseem hu ua DC qhov sib txawv zaus vim nws cov yam ntxwv raws li DC brushless lub cev muaj zog thiab cov khoom hloov zaus, yog thoob ntiaj teb hu ua BLDC. Kev khiav hauj lwm efficiency, tsawg-ceev torque, thiab ceev ceev ntawm brushless DC lub cev muaj zog yog zoo dua li tej yam kev tswj technology zaus converter, yog li nws yog tsim nyog rau kev lag luam cov xim. Cov khoom no tau tsim ntau tshaj 55kW thiab tuaj yeem tsim tau txog li 400kW, uas tuaj yeem ua tau raws li qhov xav tau ntawm kev lag luam rau kev txuag hluav taws xob thiab kev ua haujlwm siab.