Kev sojntsuam ntawm qhov Ua rau Loss of Loss of Motor Core
Nyob rau hauv qhov qis-voltage high-power thiab high-voltage motor, poob ntawm lub hauv paus tub ntxhais yog tus loj, uas yog ib qho ntawm cov tseem ceeb tseem ceeb cuam tshuam lub efficiency ntawm engine. Ms. Siv kev ntsuam xyuas ntawm qhov kev ntsuam xyuas electromagnetic ntawm kev ntsuam xyuas ib zaug thiab hom, saib daim ntawv qhia khoom, pom tias qhov tseem ceeb ntawm qhov txawv txav hlau qhov kev ntsuas tus nqi yog tias lub silicon steel sheet qib tsis phim tsim.
Lub cav hlau poob nrog rau qhov pib hlau poob los ntawm kev hloov ntawm lub ntsiab magnetic field hauv cov tub ntxhais hlau, qhov ntxiv (los yog kev tawm) poob hauv cov tub ntxhais hlau tsis muaj qhov load, thiab cov leakage magnetic field thiab harmonic magnetic field los ntawm ua haujlwm tam sim no ntawm tus stator lossis rotor. Kev poob vim hauv paus. Lub tom kawg ob yog feem ntau muab cais ua rau kev siv hluav taws xob kom nyuab heev kom meej meej. Cov qhab-nees raug soj ntsuam los yog xam raws li cov lus pom zoo lossis cov kev ntsuas tau los ntawm tus qauv. Lawv muaj feem xyuam nrog huab cua qhov sib txawv ntawm tus stator thiab rotor, thiab cov hlau poob qhov ntsuam xyuas tsis suav nrog.
Tej yam cuam tshuam rau cov khoom siv hlau yooj yim
Qhov kev siv hlau tau yooj yim yog tshwm sim los ntawm kev hloov ntawm lub ntsiab magnetic field hauv cov tub ntxhais hlau. Tej kev hloov no tej zaum yuav ua rau cov cuab yeej ua magnetization, xws li tshwm sim rau hauv stator lossis rotor cov hniav ntawm lub tshuab; lawv kuj yog los ntawm qhov sib txawv ntawm cov khoom sib hloov, xws li tshwm sim hauv lub stator los yog lub rotor cuab ntawm lub tshuab. Ob lub magnetization thiab cov kev ua kom cov pob zeb ua rau qis ua rau hysteresis thiab eddy tam sim no poob hauv qhov tseem ceeb.
Hysteresis poob
Lub zeeg phaus zis phaus ua kom phom sij ntawm lub cev ferromagnetic khoom hu ua hysteresis poob coefficient, thiab muaj feem xyuam rau cov zaus f ntawm magnetization thiab qhov siab ntawm B ntawm qhov sib txawv ntawm qhov sib nqus, thiab tuaj yeem hais raws li cov lus hauv qab no formula:
Ph = (aB + bB2) f
Qhov twg a thiab b yog qhov kev txiav txim siab los ntawm cov khoom ntawm cov khoom siv.
Thaum cov sib nqus ntawm qhov sib nqus hauv cov tub ntxhais kawm feem ntau yog nyob rau ntawm qhov ntawm 1.0 mus rau 1.6 Tesla lossis 10,000 rau 16,000 Gauss, qhov coefficient yog ze li 0,
Ph = bB2f
Qhov loj ntawm hysteresis poob vim tshwm sim los ntawm cov kev sib hloov hauv qhov sib txawv ntawm qhov sib txawv ntawm qhov tshwm sim los ntawm kev hloov ua magnetization. Cov kev ntsuam xyuas pom tias cov ntawv hlau silicon muaj cov nram qab no phenomena nyob rau hauv lub magnetization ntawm ob lub zog: thaum lub sib nqus flux qhov hnyav nyob hauv qab 1.7 Tesla, qhov kev poob qoob ua rau tshwm sim los ntawm txoj kev ua magnetization ntau dua qhov uas tshwm sim los ntawm kev hloov magnetization; thaum nws siab tshaj 1.7 Tesla Thaum, qhov ntxeev lus yog qhov tseeb. Qhov sib txawv ntawm qhov sib npaug ntawm qhov cuab tam ntawm tus tsav yog feem ntau 1.0 mus 1.5 Tesla, thiab qhov sib txawv ntawm qhov ua kom tsis muaj zog hysteresis poob li ntawm 45 mus rau 65% loj tshaj qhov kev sib txawv ntawm cov magnetization hysteresis.
Eddy tam sim no poob
Thaum lub magnetic teb hauv cov tub ntxhais cov tub ntxhais hloov, ib qho tam sim no yog raug yuam ua rau nws, hu ua eddy tam sim no, thiab qhov poob vim los ntawm nws yog hu ua eddy tam sim no poob. Yuav kom txo cov eddy tam sim no, lub cav tsav feem ntau tsis tau ua ib qho, thiab cov hlau nplooj ntawv los ntawm cov leeg yog axially laminated los thaiv qhov ndlwg ntawm qhov eddy tam sim no.
Yog tias koj xav yuav lub cav kiv cua, thov saib xyuas lub rooj Ntxuam Tsheb.
