Kev ua haujlwm ntawm lub tshuab hluav taws xob tsis muaj hluav taws xob yog ua raws li hluav taws xob tsav uas tsim kom muaj qhov sib nqus rotating. Tam sim no, muaj ntau hom khoom siv nrog cov yam ntxwv sib txawv. Nrog rau txoj kev loj hlob ntawm technologies thiab kev siv cov ntaub ntawv tshiab, tus cwj pwm los ntawm lub siab coercive quab yuam thiab ib tug txaus theem ntawm magnetic saturation, nws tau los ua ib tug muaj zog magnetic teb thiab, vim li ntawd, valve lug ntawm ib tug tshiab hom, nyob rau hauv uas. tsis muaj winding ntawm lub rotor ntsiab lossis lub oob khab. Kev siv dav dav ntawm cov khoom siv hluav taws xob semiconductor nrog lub zog siab thiab tus nqi tsim nyog tau nrawm rau kev tsim cov qauv tsim, ua kom yooj yim rau kev ua tiav thiab tshem tawm ntau yam kev hloov pauv.
Txoj Cai Ua Haujlwm
Txuag hauv kev ntseeg tau, txo tus nqi thiab kev tsim khoom yooj yim yog ua kom ntseeg tau los ntawm qhov tsis muaj cov khoom siv hloov pauv, rotor winding thiab cov hlau nplaum ruaj khov. Nyob rau tib lub sijhawm, kev nce hauv kev ua tau zoo yog ua tau vim qhov txo qis hauvkev sib txhuam losses nyob rau hauv lub collector system. Lub cev tsis muaj zog tuaj yeem ua haujlwm ntawm AC lossis txuas mus rau tam sim no. Qhov kev xaiv tom kawg muaj qhov pom tau zoo ib yam li cov cav tov. Nws cov yam ntxwv feature yog tsim ntawm ib tug sib nqus rotating teb thiab daim ntawv thov ntawm ib tug pulsed tam sim no. Nws yog ua raws li kev hloov hluav taws xob, uas ua rau kom qhov nyuaj ntawm kev tsim.
txoj haujlwm suav
Pulses yog tsim nyob rau hauv lub kaw lus tswj tom qab lub teeb liab uas qhia txog txoj hauj lwm ntawm lub rotor. Lub degree ntawm voltage thiab muab khoom ncaj qha nyob ntawm qhov ceev ntawm kev sib hloov ntawm lub cev muaj zog. Ib tug sensor nyob rau hauv lub oob khab ntes tau txoj hauj lwm ntawm lub rotor thiab muab ib tug hluav taws xob teeb liab. Nrog rau qhov sib nqus ncej hla ze ntawm lub sensor, lub amplitude ntawm lub teeb liab hloov. Sensorless positioning cov tswv yim kuj muaj, nrog rau tam sim no cov ntsiab lus dhau mus thiab transducers. PWM ntawm lub input terminals muab qhov sib txawv voltage tuav thiab tswj fais fab.
Rau lub rotor nrog cov hlau nplaum tas mus li, cov khoom siv tam sim no tsis tsim nyog, yog li tsis muaj qhov poob hauv rotor winding. Lub brushless ntsia hlau lub cev muaj zog tsis tshua muaj inertia vim tsis muaj windings thiab ib tug mechanized commutator. Yog li, nws tuaj yeem siv tau ntawm kev kub ceev yam tsis muaj lub suab nrov thiab electromagnetic. Cov hluav taws xob siab thiab yooj yim dua cov cua sov dissipation yog ua tiav los ntawm kev tso cov cua sov rau ntawm lub stator. Nws tseem tsim nyog sau cia tias muaj cov khoom siv hluav taws xob ua ke ntawm qee cov qauv.
Magnetic elements
Txoj haujlwm ntawm cov hlau nplaum tuaj yeem sib txawv raws li qhov loj ntawm lub cev muaj zog, piv txwv li, ntawm tus ncej lossis ib ncig ntawm tag nrho rotor. Tsim cov hlau nplaum zoo nrog lub zog ntau dua yog ua tau los ntawm kev siv neodymium ua ke nrog boron thiab hlau. Txawm hais tias muaj kev ua haujlwm siab, lub brushless hlau nplaum ruaj ruaj screwdriver motor muaj qee qhov tsis zoo, nrog rau kev poob ntawm cov yam ntxwv sib nqus ntawm qhov kub thiab txias. Tab sis lawv ua tau zoo dua thiab tsis muaj kev poob piv rau cov tshuab uas muaj windings hauv lawv cov qauv tsim.
Inverter pulses txiav txim qhov kev sib hloov ceev ntawm lub tshuab. Nrog rau qhov khoom siv tsis tu ncua, lub cev muaj zog khiav ntawm qhov ceev tsis tu ncua hauv lub voj qhib. Raws li, qhov kev sib hloov ceev sib txawv nyob ntawm lub zog zaus.
Ntse
Lub valve lub cev muaj zog ua haujlwm hauv cov qauv teeb tsa thiab muaj kev ua haujlwm ntawm cov txhuam txhuam, qhov ceev ntawm qhov nyob ntawm qhov siv hluav taws xob. Lub tshuab muaj ntau yam zoo:
- tsis hloov pauv hauv kev sib nqus thiab tam sim no to;
- kev xa xov ntawm qhov nrawm ntawm kev sib hloov thiab lub zog ntawm nws tus kheej;
- nrawm tsis txwv los ntawm kev quab yuam centrifugal cuam tshuam rau cov khoom siv thiab cov teb winding;
- tsis xav tau commutator thiab teb winding;
- Cov hlau nplaum siv yog lub teeb yuag thiabcompact loj;
- siab torque;
- zog saturation thiab efficiency.
Siv
Cov hlau nplaum tas mus li DC brushless lub cev muaj zog feem ntau pom hauv cov khoom siv nrog lub zog hauv 5KW. Hauv cov cuab yeej muaj zog dua, lawv siv yog qhov tsis sib haum xeeb. Nws tseem tsim nyog sau cia tias cov hlau nplaum nyob rau hauv hom motors no tshwj xeeb tshaj yog rau qhov kub thiab txias thiab muaj zog teb. Induction thiab txhuam kev xaiv tsis muaj qhov tsis zoo li no. Motors yog dav siv nyob rau hauv hluav taws xob maus taus, tsheb tsav vim tsis muaj kev sib txhuam nyob rau hauv lub manifold. Ntawm cov yam ntxwv, nws yog ib qho tsim nyog los qhia txog qhov sib xws ntawm torque thiab tam sim no, uas ua kom cov suab nrov txo qis.
