Dab tsi yog qhov xwm txheej ntawm kev sib tsoo?
Taw qhia rau kev sib cav sib ceg
Ib qho kev sib txuas yog ib feem ntawm ib lub cev muaj zog nrog lub xaim hluav taws xob. Vim hais tias qhov kev sib txheeb ntawm cov xov hlau ntawm lub xov hlau los ntawm cov hlau nplaum ntawm cov ncej tsho, ua rau qhov tam sim no raug yuam nyob rau hauv cov xov hlau (xws li hauv lub tshuab hluav taws xob) los yog ua rau muaj kev sib sib zog nqus induction vim tam sim no dhau los ntawm cov xov hlau, nws nyob ntawm no. Tig hauv lub nras chaw (xws li hauv tshuab). Tsuas yog cov DC tsav muaj lub siab, lub armature muaj xws li cov tub ntxhais kev sib txuas thiab kev sibtham, thiab qhov khoob khoob khoob yog ib feem ntawm DC lub cav, thiab yog ib feem ntawm qhov ua kom muaj hluav taws xob thiab ua rau lub tshuab electromagnetic torque rau electromechanical zog conversion (cov generator yog hloov dua siab tshiab rau hauv tshuab hluav taws xob) Hluav taws xob zog). Cov tub ntxhais muaj lub zeem muag yog ob qho tib si ntawm tus qauv sib nqus loj thiab qee zaum ib tus neeg txhawb zog ntawm qhov chaw khov kho, thiab qhov khoob khoob khoob nyiab tau muab tso rau hauv cov khoob khoob khuab khawm. AC tsav yog lub rotor. Lub hauv paus ntsiab lus ntawm kev tsav tsheb ntawm DC lub cev thiab AC motor yog sib npaug sib npaug. Tam sim no nyob rau hauv lub armature winding ntawm DC tsav kuj AC, thiab cov zis los ntawm tus commutator yog DC. Lub tshuab roj AC yog faib ua lub tshuab pa taws (asynchronous machine) thiab lub tshuab synchronous. Lub tshuab ua kom raug xau yog muab faib ua ib lub voj khawm rotor thiab ib lub rotor mob raws li cov qauv rotor. Lub tshuab ua kom muaj pa taws ua rau muaj qhov sib txeeb ntawm qhov sib txawv ntawm lub stator, thiab lub rotor winding ua electromechanical zog conversion. Lub tshuab hluav taws xob ua rau lub cav sib txawv hauv cov rotor winding, thiab stator winding ua electromechanical zog hloov dua siab tshiab.
Thaum tsis muaj tam sim no ntws los ntawm lub siab khov kho, qhov chaw nqos hlau uas ua los ntawm cov hlau nplaum hu ua lub ntsiab magnetic field thiab ze li sinusoidally faib. Thaum muaj tam sim no nyob rau hauv lub armature winding, lub winding nws tus kheej generates ib lub teb magnetic hu ua armature magnetic field. Cov nyhuv ntawm lub armature magnetic field ntawm lub ntsiab magnetic teb yuav ua rau lub ntsiab magnetic teb yuav distorted thiab ua kom muaj kev sib tsoo cov tshuaj tiv thaiv;
(1) Ntsia teeb meem ntawm cov khoom tsis muaj zog
Lub zog ntawm cov tshuab raj magnetic (magnetic field magnetic field) yog tib yam li cov theem tam sim no, thiab qhov chaw seem magnetic field distortion lub ntsiab magnetic teb, thiab ib nrab yog strengthened thiab ib nrab yog tsis muaj zog;
(2) Ntsia teeb meem ntawm cov khoom siv ua tiav
Tam sim no ntawm lub armature magnetic teb lags behind the electromotive quab yuam los ntawm 90 degrees. Lub zog ntawm lub tshuab fais fab ntawm lub tshuab hluav taws xob sib dhos yog cov lus sib txawv ntawm lub zog ntawm lub tshuab hluav taws xob uas tau tsim los ntawm lub tshuab hluav taws xob loj, ua rau lub zog loj ntawm cov hlau electromotive zog, uas yog vim li cas qhov hluav taws xob poob thaum lub sij hawm peb theem. Longitudinal demagnetization armature tshuaj tiv thaiv
(3) Qhov teeb meem ntsig txog cov dej ntshiab hauv kev lag luam
Tam sim no ntawm lub armature magnetic teb ua tus electromotive quab yuam los ntawm 90 degrees. Txij li thaum lub zog magnetic teb yog 90 degrees rau lub ntsiab magnetic teb, lub electromotive quab yuam generated los ntawm lub armature magnetic teb yog tib yam li lub electromotive quab yuam generated ntawm lub ntsiab magnetic teb, ua li no strengthening lub ntsiab magnetic teb electromotive quab yuam, uas yog vim li cas cov 3-phase circuit Qhov laj thawj yog vim li cas qhov dav hlau voltage rises thaum lub caij capacitive muaj; qhov no yog hu ua qhov axis ntsug pab ntu cov khoom ntom ntom magnetic.
Qhov xwm ntawm qhov kev sib cav sib ceg
Qhov teeb meem kev sib xyaw armature muab faib rau hauv qhov ncaj nraim ntawm txoj kab rov rau sab nrauv thiab qhov kab ntawm cov kab sib tw ntawm txoj kab sib tw ntawm txoj kab sib tw. Tus cwj pwm ntawm cov khoom siv faus fab hlau ntawm lub zog ntawm tus qauv ntawm lub ntiaj teb ua teb magnetic hu ua armature cov tshuaj tiv thaiv. Nws lub ntsiab zog yog demagnetization thiab tsis muaj cov nyhuv (qhov no yog rau lub ntsiab lus flux)
