Jijjiga da hayaniyar injin maganadisu na dindindin
Nazari akan Tasirin Stator Electromagnetic Force
Hayaniyar lantarki ta stator a cikin motar tana da tasiri da abubuwa guda biyu, ƙarfin motsa jiki na lantarki da amsawar tsari da hasken sautin da ya haifar da ƙarfin haɓakawa daidai. Binciken binciken.
Farfesa ZQZhu na Jami'ar Sheffield, UK, da dai sauransu, ya yi amfani da hanyar nazari don nazarin ƙarfin lantarki da hayaniyar mashin ɗin mashin ɗin dindindin na magnet, nazarin ka'idar ƙarfin lantarki na dindindin magnet brushless motor, da rawar jiki na dindindin. Magnet brushless DC motor tare da sanduna 10 da ramummuka 9. Ana nazarin amo, dangantakar da ke tsakanin ƙarfin lantarki da faɗin haƙori na stator an yi nazari a hankali, kuma ana nazarin alaƙar da ke tsakanin maƙarƙashiya da sakamakon ingantawa na vibration da amo.Farfesa Tang Renyuan da Song Zhihuan daga Jami'ar Fasaha ta Shenyang sun ba da cikakkiyar hanyar nazari don nazarin ƙarfin lantarki da haɗin kai a cikin injin maganadisu na dindindin, wanda ya ba da tallafi na ka'idar don ƙarin bincike kan ka'idar hayaniya ta injin maganadisu na dindindin.Ana yin nazarin tushen ƙararrawar jijjiga na lantarki a kusa da injin na'ura mai haɗaɗɗiyar maganadisu na dindindin wanda ke da ƙarfi ta hanyar sine da kuma mai sauya mitar, mitar siffa ta filin maganadisu, ƙarfin lantarki na al'ada da ƙarar girgiza ana nazarin, da kuma dalilin jujjuyawa. Ana nazarin ripple. An kwatanta jujjuyawar juzu'i kuma an tabbatar da gwaji ta hanyar amfani da Element, da jujjuyawar juzu'i a ƙarƙashin yanayi daban-daban na ramuka-pole, da kuma tasirin tsayin ratar iska, madaidaicin sandar sandar sanda, kusurwar chamfered, da faɗin ramin akan juzu'in juzu'i. .Ƙarfin radial na lantarki da ƙirar ƙarfin tangential, kuma ana aiwatar da simintin modal daidai, ana nazarin ƙarfin lantarki da amsawar amo a cikin yanki na mita kuma ana nazarin samfurin radiyo na sauti, kuma ana gudanar da simulation daidai da bincike na gwaji. An nuna cewa ana nuna manyan hanyoyi na dindindin na stator magnet motor a cikin adadi.
Babban yanayin injin maganadisu na dindindin
Fasaha inganta tsarin jikin motaBabban juzu'in maganadisu a cikin motar yana shiga tazarar iska sosai radially, kuma yana haifar da ƙarfin radial akan stator da rotor, yana haifar da girgizawar lantarki da hayaniya.A lokaci guda, yana haifar da lokacin tangential da ƙarfin axial, yana haifar da girgizar tangential da girgizar axial.A lokuta da yawa, irin su injinan asymmetric ko injin guda ɗaya, girgizar tangential da aka haifar tana da girma sosai, kuma yana da sauƙi don haifar da haɓakar abubuwan da aka haɗa da motar, wanda ke haifar da hayaniya.Domin a lissafta hayaniyar electromagnetic, da kuma tantancewa da sarrafa waɗannan surutu, ya zama dole a san tushen su, wato ƙarfin ƙarfin da ke haifar da girgiza da hayaniya.A saboda wannan dalili, ana gudanar da nazarin tasirin tasirin wutar lantarki ta hanyar nazarin filin maganadisu na iska.Tsammanin cewa igiyar maganadisu mai yawa da aka samar da stator shine, da kuma igiyar maganadisu.samar da rotor ne, sa'an nan su composite Magnetic flux density kalaman a cikin tazarar iska za a iya bayyana kamar haka:
Abubuwa irin su stator da rotor slotting, winding rarraba, shigar da halin yanzu waveform murdiya, iska-taza permeance cajewa, rotor eccentricity, kuma iri daya rashin daidaito na iya haifar da nakasawa inji sa'an nan girgiza. Harmonics na sararin samaniya, jituwa na lokaci, ramukan jituwa, eccentricity harmonics da jikewar maganadisu na ƙarfin magnetomotive duk suna haifar da jituwa mafi girma da ƙarfi. Musamman ma'aunin ƙarfi na radial a cikin motar AC, zai yi aiki a kan stator da rotor na motar a lokaci guda kuma ya haifar da murdiya na maganadisu.The stator-frame da rotor-casing tsarin shi ne babban radiation tushen amo mota.Idan ƙarfin radial yana kusa da ko daidai da mitar yanayi na tsarin stator-base, resonance zai faru, wanda zai haifar da nakasar tsarin stator na motar kuma ya haifar da rawar jiki da amo.A mafi yawan lokuta,amo na magnetostrictive da aka haifar da ƙananan ƙananan 2f, ƙarfin radial mai girma ba shi da mahimmanci (f shine ainihin mitar motar, p shine adadin nau'i-nau'i na sandar sanda). Koyaya, ƙarfin radial da magnetostriction ya haifar zai iya kaiwa kusan 50% na ƙarfin radial wanda filin maganadisu na iska ya jawo.Ga motar da injin inverter ke tukawa, saboda kasancewar babban tsari na lokaci masu jituwa a halin yanzu na iskar iskar sa, lokacin jituwa zai haifar da ƙarin juzu'in bugun jini, wanda yawanci ya fi girma da karfin juzu'in da sararin samaniya ke samarwa. babba.Bugu da kari, wutar lantarkin da na'urar gyara ta ke haifarwa ana kuma watsa shi zuwa mai juyawa ta hanyar tsaka-tsaki, wanda ke haifar da wani nau'in juzu'i.Dangane da hayaniyar lantarki na dindindin na injin maganadisu na aiki tare, ƙarfin Maxwell da ƙarfin magnetostrictive sune manyan abubuwan da ke haifar da girgizar motsi da hayaniya.
Motoci stator halaye vibrationHayaniyar lantarki na motar ba wai kawai tana da alaƙa da mita, tsari da girman ƙarfin ƙarfin lantarki da ke haifar da filin maganadisu na iska ba, har ma yana da alaƙa da yanayin yanayin tsarin motar.Hayaniyar lantarki ana yin ta ne ta hanyar girgiza stator da casing.Don haka, tsinkayar mitar dabi'ar stator ta hanyar ka'idoji ko simulations a gaba, da kuma jujjuya mitar ƙarfin wutar lantarki da mitar yanayi na stator, hanya ce mai tasiri don rage hayaniyar lantarki.Lokacin da mitar ƙarfin radial na motar ya yi daidai da ko kusa da mitar yanayi na wani tsari na stator, za a haifar da resonance.A wannan lokacin, ko da amplitude na radial Force wave bai yi girma ba, zai haifar da babban girgiza na stator, ta haka ne ya haifar da babbar murya na electromagnetic.Don motsin motsi, abu mafi mahimmanci shine nazarin yanayin yanayi tare da rawar jiki na radial a matsayin babba, tsarin axial ba shi da kome, kuma yanayin yanayin sararin samaniya yana ƙasa da tsari na shida, kamar yadda aka nuna a cikin adadi.
Sigar jijjiga stator
Lokacin nazarin halayen girgizar motar, saboda iyakancewar tasirin damping akan yanayin yanayin da mita na stator na motar, ana iya yin watsi da shi.Damping na tsari shine rage matakan girgizawa kusa da mitar resonant ta hanyar amfani da babban injin tarwatsa makamashi, kamar yadda aka nuna, kuma ana la'akari ne kawai a ko kusa da mitar resonant.
damping sakamako
Bayan ƙara windings zuwa stator, saman windings a cikin baƙin ƙarfe core Ramin da aka bi da varnish, da insulating takarda, varnish da jan karfe waya suna haɗe da juna, da kuma insulating takarda a cikin Ramin kuma a hankali a hakora. na baƙin ƙarfe core.Sabili da haka, iska a cikin ramuka yana da ƙayyadaddun gudummawar taurin kai ga tushen ƙarfe kuma ba za a iya ɗaukar shi azaman ƙarin taro ba.Lokacin da aka yi amfani da hanyar ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun bayanai don bincike, wajibi ne a sami sigogi waɗanda ke nuna nau'ikan kayan aikin injiniya daban-daban bisa ga kayan iskar da ke cikin cogging.A lokacin aiwatar da tsari, yi ƙoƙarin tabbatar da ingancin fenti na dipping, ƙara yawan tashin hankali na motsi na coil, inganta ƙarfin juzu'i da ƙananan ƙarfe, ƙara ƙarfin tsarin motar, ƙara yawan mita na halitta don kaucewa. resonance, rage girman girgiza, da rage igiyoyin lantarki. hayaniya.Matsakaicin yanayi na stator bayan an danna shi a cikin casing ya bambanta da na core stator guda ɗaya. Casing na iya haɓaka ƙaƙƙarfan ƙaƙƙarfan tsarin tsarin stator, musamman ƙarancin tsari mai ƙarfi. Haɓaka wuraren aiki na saurin jujjuyawar yana ƙara wahalar gujewa rawa a ƙirar mota.Lokacin zayyana injin, ya kamata a rage rikitaccen tsarin harsashi, kuma ana iya ƙara yawan mitar tsarin motar ta hanyar haɓaka kaurin harsashi yadda ya kamata don guje wa faruwar rawa.Bugu da kari, yana da matukar mahimmanci don saita alakar tuntuɓar tsakanin ma'aunin stator da casing yayin amfani da ƙididdige ƙididdiga masu iyaka.
Electromagnetic Analysis na MotorsA matsayin mahimmin alamar ƙirar lantarki na injin, ƙarfin maganadisu yawanci yana iya nuna yanayin aiki na motar.Don haka, da farko za mu cirewa kuma mu bincika ƙimar ƙarfin maganadisu, na farko shine don tabbatar da daidaiton simulation, na biyu kuma shine don samar da tushe don hakar ƙarfin lantarki na gaba.Zane-zanen motsin maganadisu na gajimare yana nuna a cikin adadi mai zuwa.
Ana iya gani daga taswirar gajimare cewa ƙarfin maganadisu a matsayin gadar keɓewar maganadisu ya fi girma fiye da jujjuyawar madaidaicin BH na stator da rotor core, wanda zai iya yin tasiri mai kyau na keɓewar maganadisu.
Matsakaicin girman ratar iskaCire Magnetic densities na motor iska ratar da hakori matsayi, zana kwana, kuma za ka iya ganin takamaiman dabi'u na motor iska ratar Magnetic yawa da hakori Magnetic yawa. Matsakaicin maganadisu na hakori wani nisa ne daga wurin jujjuya kayan, wanda ake zaton ya haifar da asarar ƙarfe mai yawa lokacin da aka ƙera motar da sauri.
Mota Nazarin ModalDangane da tsarin tsarin motar da grid, ayyana kayan, ayyana ma'aunin stator a matsayin ƙarfe tsarin, da ayyana casing azaman kayan aluminium, da gudanar da bincike na modal akan injin gabaɗaya.Ana samun yanayin gaba ɗaya na motar kamar yadda aka nuna a cikin hoton da ke ƙasa.
siffar farko-oda
siffar tsari na biyu
siffar tsari na uku
Binciken girgizar motarAna nazarin amsawar jituwa na motar, kuma an nuna sakamakon saurin girgiza a cikin sauri daban-daban a cikin hoton da ke ƙasa.