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Nekuda kwemitengo yekushandisa uye hupenyu hurefu hweinjini, yakakodzera injini yekupisa manejimendi zano rakakosha zvakanyanya.Ichi chinyorwa chakagadzira dhizaini manejimendi emagetsi e induction motors kuti ipe kusimba kuri nani uye kugadzirisa mashandiro.Mukuwedzera, kuongororwa kwakawanda kwezvinyorwa pamusoro pemitoo yekutonhodza injini kwakaitwa.Semugumisiro mukuru, kuverenga kwekupisa kwemhepo yakakwirira-yakatonhorera asynchronous motor inopiwa, ichifunga nezvedambudziko rinozivikanwa rekugovera kupisa.Pamusoro pezvo, chidzidzo ichi chinopa nzira yakabatana ine nzira mbiri kana dzinopfuura dzekutonhodza kuti dzizadzise zvido zvazvino.Chidzidzo chenhamba chemuenzaniso we100 kW mhepo-yakatonhorera asynchronous mota uye yakagadziridzwa yekudziya manejimendi modhi yemota imwe chete, uko kuwedzera kwakanyanya kwekuita kwemotokari kunowanikwa kuburikidza nemusanganiswa wekutonhora kwemhepo uye yakabatanidzwa yekutonhodza mvura system, yave. wakaita.Iyo yakabatanidzwa mhepo-yakatonhorera uye mvura-yakatonhorera sisitimu yakadzidzwa uchishandisa SolidWorks 2017 uye ANSYS Fluent 2021 shanduro.Mvura mitatu yakasiyana-siyana inoyerera (5 L / min, 10 L / min, uye 15 L / min) yakaongororwa maererano nemaitiro emhepo-yakatonhorera induction motors uye yakasimbiswa uchishandisa zviripo zvakadhindwa zvinyorwa.Ongororo yacho inoratidza kuti pamitengo yakasiyana yekuyerera (5 L/min, 10 L/min uye 15 L/min zvichiteerana) takawana kudzikiswa kwekushisa kwakafanana kwe2.94%, 4.79% uye 7.69%.Naizvozvo, mhedzisiro inoratidza kuti yakamisikidzwa induction mota inogona kunyatso kudzikisa tembiricha ichienzaniswa nemhepo-yakatonhorera induction mota.
Iyo mota yemagetsi ndeimwe yeakakosha ekugadzirwa kweazvino engineering sainzi.Mota dzemagetsi dzinoshandiswa mune zvese kubva kumidziyo yemumba kusvika kumota, kusanganisira maindasitiri emotokari uye aerospace.Mumakore achangopfuura, kufarirwa kwemainjiniya induction motors (AM) kwakawedzera nekuda kwekukwira kwavo kwekutanga torque, kudzora kukurumidza kwakanaka uye kuenzanisa kuwanda kwehuwandu (Fig. 1).Induction motors haingoite kuti magirobhu ako apenye, anosimbisa akawanda emagetsi mumba mako, kubva bhurasho remazino kuenda kuTesla yako.Mechanical simba muIM inogadzirwa nekusangana kweiyo magnetic field ye stator uye rotor windings.Pamusoro pezvo, IM isarudzo inoshanda nekuda kwekushomeka kwesimbi isingawanzo pasi.Nekudaro, iyo yakanyanya kusarudzika yeADs ndeyekuti hupenyu hwavo uye kugona kwavo zvinonzwa zvakanyanya kune tembiricha.Induction motors dzinoshandisa 40% yemagetsi epasirese, izvo zvinofanirwa kutitungamira kuti tifunge kuti kutonga mashandisirwo emagetsi emuchina uyu kwakakosha.
Arrhenius equation inotaura kuti pa10 ° C yega yega inokwira mukupisa kwekushanda, hupenyu hweinjini yose huri nepakati.Naizvozvo, kuti uve nechokwadi chekuvimbika uye kuwedzera kugadzirwa kwemuchina, zvinodikanwa kuti utarise kune thermal control yeropa.Munguva yakapfuura, kuongorora kupisa kwave kuregeredzwa uye vagadziri vemotokari vakafunga nezvedambudziko chete padivi, zvichibva pane ruzivo rwekugadzira kana zvimwe zvakasiyana-siyana zvakadai semhepo inoputika ikozvino density, etc. Nzira idzi dzinotungamirira kukushandiswa kwemahombekombe makuru ekuchengeteka kwepamusoro-soro- kesi yekudziya mamiriro, zvichikonzera kuwedzera kwemashini saizi uye nekudaro kuwedzera kwemutengo.
Kune marudzi maviri ekuongorora kwekupisa: lumped circuit analysis uye nhamba nzira.Kubatsira kukuru kwemaitiro ekuongorora ndiko kugona kuita masvomhu nekukurumidza uye nemazvo.Zvisinei, kuedza kukuru kunofanira kuitwa kutsanangura masekete ane humbowo hwakakwana kutevedzera nzira dzinopisa.Kune rimwe divi, nzira dzenhamba dzakapatsanurwa kuita computational fluid dynamics (CFD) uye structural thermal analysis (STA), ese anoshandisa finite element analysis (FEA).Kubatsira kwenhamba yekuongorora ndeyekuti inokutendera iwe kutevedzera geometry yechigadzirwa.Nekudaro, kuseta system uye kuverenga dzimwe nguva kunogona kuve kwakaoma.Zvinyorwa zvesainzi zvinokurukurwa pazasi mienzaniso yakasarudzwa yekupisa uye yemagetsi ongororo yeakasiyana emazuva ano induction motors.Izvi zvinyorwa zvakakurudzira vanyori kuti vadzidze zvinopisa zviitiko mune asynchronous motors uye nzira dzekutonhora kwavo.
Pil-Wan Han1 aibatikana mukupisa uye kwemagetsi ongororo yeMI.Iyo lumped yedunhu yekuongorora nzira inoshandiswa pakuongorora kupisa, uye iyo nguva-inosiyana magineti inogumira chinhu nzira inoshandiswa pakuongorora kwemagetsi.Kuti upe nemazvo kuchengetedzwa kwemafuta ekuremerwa mune chero indasitiri yekushandisa, tembiricha ye stator winding inofanira kuverengerwa yakavimbika.Ahmed et al.2 vakaronga yemhando yepamusoro yekupisa network modhi yakavakirwa pakadzika kwekushisa uye thermodynamic kufunga.Kuvandudzwa kwemaitiro ekudziya ekuenzanisira kune indasitiri yekudzivirira kupisa kwezvinangwa zvinobatsira kubva kune analytical mhinduro uye kufunga kweanopisa paramita.
Nair et al.3 vakashandisa kuongorora kwakasanganiswa kwe39 kW IM uye 3D nhamba yekuongorora kupisa kwekufanotaura kugoverwa kwekupisa mumushini wemagetsi.Ying et al.4 vakaongorora fan-yakatonhorera yakavharwa zvizere (TEFC) IMs ine 3D tembiricha estimation.Mwedzi et al.5 yakadzidza kupisa kuyerera kweIM TEFC uchishandisa CFD.Iyo LPTN motor transition modhi yakapihwa naTodd et al.6.Yekuyedza tembiricha data inoshandiswa pamwe neyakaverengerwa tembiricha inotorwa kubva kune yakarongwa LPTN modhi.Peter et al.7 vakashandisa CFD kudzidza mafambiro emhepo anokanganisa maitiro ekupisa kwemagetsi emagetsi.
Cabral et al8 vakakurudzira yakapusa IM yekupisa modhi umo tembiricha yemuchina yakawanikwa nekushandisa silinda yekupisa diffusion equation.Nategh et al.9 vakadzidza self-ventilated traction motor system vachishandisa CFD kuyedza chokwadi chezvikamu zvakagadziridzwa.Nokudaro, zvidzidzo zvenhamba uye zvekuedza zvinogona kushandiswa kuenzanisa kuongorora kwekushisa kwema induction motors, ona fig.2.
Yinye et al.10 vakaronga dhizaini yekuvandudza kutungamira kwekupisa nekushandisa zvakajairika kupisa zvinhu zveyakajairwa zvinhu uye zvakajairika zvinyorwa zvekurasikirwa kwechikamu chemuchina.Marco et al.11 vakapa maitiro ekugadzira masisitimu ekutonhodza uye mabhachi emvura ezvikamu zvemuchina uchishandisa mhando dzeCFD neLPTN.Yaohui et al.12 vanopa mazano akasiyana-siyana ekusarudza nzira yakakodzera yekutonhodza uye kuongorora kushanda pakutanga kwekugadzira.Nell et al.13 vakurudzira kushandisa mamodheru ekubatanidza maelectromagnetic-thermal simulation yehuwandu hwakapihwa hwehukoshi, nhanho yehudzamu uye simba remakomputa yedambudziko remultiphysics.Jean et al.14 naKim et al.15 vakadzidza kugoverwa kwekushisa kwemhepo inotonhorera induction motor vachishandisa 3D yakasanganiswa FEM munda.Verengai data rekuisa uchishandisa 3D eddy yazvino ongororo yemunda kuti uwane kurasikirwa kweJoule uye uzvishandise pakuongorora kupisa.
Michel et al.16 vakaenzanisa yakajairika centrifugal kutonhora mafeni neaxial mafeni eakasiyana magadzirirwo kuburikidza nekuenzanisa uye kuedza.Imwe yeiyi madhizaini yakawana diki asi yakakosha kuvandudzwa mukushanda kweinjini uku ichichengetedza tembiricha imwechete yekushandisa.
Lu et al.17 vakashandisa yakaenzana magineti yedunhu nzira mukubatana neiyo Boglietti modhi kufungidzira kurasika kwesimbi pashaft yemota induction.Vanyori vanofungidzira kuti kugoverwa kwemagineti flux density mune chero chikamu chemuchinjikwa mukati meiyo spindle mota yunifomu.Ivo vakafananidza nzira yavo nemhedzisiro yeinogumira chinhu chekuongorora uye mhando dzekuyedza.Iyi nzira inogona kushandiswa pakuongorora kwakajeka kweMI, asi kurongeka kwayo kushoma.
18 inopa nzira dzakasiyana dzekuongorora iyo electromagnetic munda wemutsara induction motors.Pakati pavo, nzira dzekufungidzira kurasikirwa kwesimba mune reactive njanji uye nzira dzekufanotaura kukwira kwekushisa kweiyo traction linear induction motors inotsanangurwa.Idzi nzira dzinogona kushandiswa kuvandudza simba rekushandura simba remutsara induction motors.
Zabdur et al.19 yakaongorora mashandiro emabhachi ekutonhodza ichishandisa nzira yenhamba-nhatu.Bhachi rekutonhodza rinoshandisa mvura senzvimbo huru yekutonhodza yezvikamu zvitatu zveIM, izvo zvakakosha kune simba uye tembiricha yepamusoro inodiwa pakupomba.Rippel et al.20 vane patented nzira nyowani yekutonhodza mvura masisitimu inonzi transverse laminated cooling, umo firiji inoyerera ichichinjika kuburikidza nematunhu akamanikana akaumbwa nemakomba mune imwe neimwe magineti lamination.Deriszade et al.21 yakaongorora kutonhorera kwemamota ekudhonza muindasitiri yemotokari uchishandisa musanganiswa weethylene glycol nemvura.Ongorora mashandiro eakasiyana musanganiswa neCFD uye 3D turbulent fluid kuongororwa.Chidzidzo chekuenzanisa naBoopathi et al.22 chakaratidza kuti tembiricha yemhando yeinjini yakanyoroveswa mvura (17-124 ° C) idiki zvakanyanya pane yeinjini inotonhorera mhepo (104-250 ° C).Iyo yakanyanya tembiricha yealuminium mvura-yakatonhorera mota inoderedzwa ne50.4%, uye yakanyanya tembiricha yePA6GF30 mvura-yakatonhorera mota inoderedzwa ne48.4%.Bezukov et al.23 vakaongorora mhedzisiro yekuumbwa kwechiyero pane thermal conductivity yemudhuri weinjini ine mvura yekutonhora system.Zvidzidzo zvakaratidza kuti 1.5 mm gobvu oxide firimu inoderedza kupisa kupisa ne30%, inowedzera kushandiswa kwemafuta uye inoderedza simba reinjini.
Tanguy et al.24 vakaita ongororo nemhando dzakasiyana dzekuyerera, tembiricha yemafuta, kumhanya kwekutenderera uye nzira dzejekiseni dzemagetsi emagetsi achishandisa mafuta ekuzora seanotonhodza.Hukama hwakasimba hwakagadzwa pakati peyero yekuyerera uye kutonhora kwese kutonhora.Ha et al.25 vakurudzira kushandisa madonhwe ekudonha semanozzles kugovera zvakaenzana firimu remafuta uye kuwedzera kutonhora kweinjini.
Nandi et al.26 vakaongorora kushanda kweL-shaped flat heat pipes pakushanda kweinjini uye kutonga kwekupisa.Iyo inopisa pombi evaporator chikamu chinoiswa mumotokari casing kana kuvigwa mumotokari shaft, uye iyo condenser chikamu chinoiswa uye kutonhorera nekutenderera mvura kana mhepo.Bellettre et al.27 akadzidza PCM yakasimba-yemvura yekutonhodza sisitimu yenguva pfupi mota stator.Iyo PCM inopfekedza misoro inomonereka, ichidzikisa tembiricha yenzvimbo inopisa nekuchengetedza latent yekupisa simba.
Saka, kuita kwemota uye tembiricha inoongororwa uchishandisa nzira dzakasiyana dzekutonhora, ona fig.3. Aya maseketi anotonhorera akagadzirirwa kudzora tembiricha yemhepo, mahwendefa, misoro inomonereka, magineti, chitunha uye mahwendefa ekupedzisira.
Liquid kutonhora masisitimu anozivikanwa neanoshanda ekutamisa kupisa.Nekudaro, kupomba chinotonhorera kutenderedza injini kunopedza simba rakawanda, izvo zvinoderedza simba reinjini rinoshanda.Mhepo yekutonhodza masisitimu, kune rumwe rutivi, inzira inoshandiswa zvakanyanya nekuda kwekudhura kwavo uye nyore kwekusimudzira.Nekudaro, haisati yanyatso shanda pane yemvura inotonhorera masisitimu.Nzira yakabatanidzwa inodiwa iyo inogona kusanganisa kushandiswa kwekushisa kwepamusoro kwemvura-yakatonhorera sisitimu nemutengo wakaderera wemhepo inotonhorera system pasina kushandisa mamwe simba.
Ichi chinyorwa chinonyora uye chinoongorora kurasikirwa kwekupisa muAD.Iyo nzira yedambudziko iri, pamwe nekudziya uye kutonhora kwemainduction motors, inotsanangurwa muKurasikirwa Kwekupisa muInduction Motors chikamu kuburikidza neKutonhodza Strategies.Iko kurasikirwa kwekupisa kwepakati peiyo induction mota inoshandurwa kuita kupisa.Nokudaro, chinyorwa ichi chinokurukura nzira yekupisa kupisa mukati mejini kuburikidza nekufambisa uye kumanikidzirwa.Thermal modelling yeIM ichishandisa kuenderera equations, Navier-Stokes/momentum equations uye simba equations inonzi.Vatsvakurudzi vakaita ongororo uye nhamba yezvidzidzo zvekupisa zveIM kuti vafungidzire tembiricha ye stator windings nechinangwa chega chekudzora hutongi hwekupisa kwemota yemagetsi.Ichi chinyorwa chinotarisa kuongororwa kwekupisa kwemhepo-yakatonhorera IM uye kuongorora kwekushisa kweiyo yakabatanidzwa mhepo-yakatonhorera uye mvura-yakatonhorera IMs uchishandisa CAD modeling uye ANSYS Fluent simulation.Uye izvo zvinopisa zvinopisa zveiyo yakabatanidzwa yakagadziridzwa modhi yemhepo-yakatonhorera uye mvura-inotonhorera masisitimu inoongororwa zvakadzama.Sezvambotaurwa pamusoro apa, magwaro akanyorwa pano haasi pfupiso yemamiriro ehunyanzvi mumunda wekupisa zviitiko uye kutonhora kwemainduction motors, asi anoratidza matambudziko mazhinji anoda kugadziriswa kuitira kuti ave nechokwadi chekushanda kwakavimbika kwemainduction motors. .
Kurasikirwa kwekupisa kunowanzo kupatsanurwa mukurasikirwa kwemhangura, kurasikirwa kwesimbi uye friction / mechanical kurasikirwa.
Kurasika kwemhangura mhedzisiro yekudziya kweJoule nekuda kwekudzivirira kwemutyairi uye inogona kuverengerwa se10.28:
uko q̇g ndiko kupisa kunogadzirwa, ini naVe ndiwo mazita ezvino uye voltage, zvichiteerana, uye Re ndiyo inopikisa mhangura.
Kurasika kwesimbi, kunozivikanwawo separasitic kurasikirwa, ndiyo yechipiri mhando huru yekurasikirwa iyo inokonzera hysteresis uye eddy kurasikirwa ikozvino mu AM, inonyanya kukonzerwa nekusiyana-siyana kwemagineti.Iwo anoverengerwa neiyo yakawedzera Steinmetz equation, iyo coefficients inogona kutariswa seyakagadzika kana kuchinjika zvichienderana nemamiriro ekushanda10,28,29.
uko Khn ndiyo hysteresis kurasikirwa chinhu chinobva mudhayagiramu yekurasikirwa kwepakati, Ken ndiye eddy ikozvino kurasikirwa chinhu, N ndiyo harmonic index, Bn uye f ndiyo peak flux density uye kuwanda kweiyo isiri-sinusoidal excitation, zvichiteerana.Iyo equation iri pamusoro inogona kurerutswa sezvinotevera10,29:
Pakati pavo, K1 neK2 ndiyo yakakosha kurasikirwa chinhu uye eddy ikozvino kurasikirwa (qec), hysteresis kurasikirwa (qh), uye kurasikirwa kwakanyanya (qex), zvichiteerana.
Kuremerwa nemhepo uye kurasikirwa kwekupokana ndizvo zviviri zvinokonzeresa kurasikirwa kwemechini muIM.Kurasikirwa nemhepo uye kukweshana kuri gumi,
Mune fomula, n is the rotational speed, Kfb ndiyo coefficient of friction loss, D ndiyo dhayamita rekunze re rotor, l kureba kwerotor, G huremu hwe rotor 10.
Iyo yekutanga nzira yekupisa kupisa mukati meinjini ndeye conduction uye kupisa kwemukati, sekutemerwa nePoisson equation30 inoshandiswa kune uyu muenzaniso:
Munguva yekushanda, mushure meimwe nguva panguva iyo injini inosvika pakadzikama, kupisa kunogadzirwa kunogona kuenzaniswa nekugara kuchipisa kwekupisa kwepamusoro.Nokudaro, zvinogona kufungidzirwa kuti conduction mukati mejini inoitwa nekusunungurwa kwemukati kupisa.
Kupisa kwekushisa pakati pezvimbi nemhepo yakatenderedza kunoonekwa sekumanikidzwa kutenderera, apo mvura inomanikidzwa kufamba mune imwe nzira nesimba rekunze.Convection inogona kuratidzwa se30:
apo h ndiyo chidimbu chekushisa kwekushisa (W / m2 K), A ndiyo nzvimbo yepamusoro, uye ΔT ndiyo kusiyana kwekushisa pakati pekupisa kwekushisa kwepamusoro uye refrigerant perpendicular pamusoro.Nhamba yeNusselt (Nu) chiyero chechiyero che convective uye conductive kupisa kupisa perpendicular kumuganhu uye inosarudzwa zvichienderana nemaitiro e laminar uye mhirizhonga inoyerera.Zvinoenderana neiyo epirical nzira, iyo Nusselt nhamba yekuyerera kwemhirizhonga inowanzobatanidzwa nenhamba yeReynolds uye nhamba yePrandtl, inoratidzwa se30:
uko h ndiyo convective heat transfer coefficient (W/m2 K), l ndiwo hurefu hwehunhu, λ ndiyo thermal conductivity yefluid (W/m K), uye Prandtl number (Pr) chiyero chereshiyo ye iyo yekukurumidza diffusion coefficient kune iyo inopisa diffusivity (kana velocity uye hukama ukobvu hweiyo inopisa muganho layer), inotsanangurwa se30:
uko k uye cp ndiyo inopisa conductivity uye chaiyo kupisa huwandu hwemvura, zvichiteerana.Kazhinji, mhepo nemvura ndizvo zvinotonhora zvakanyanya zvemagetsi mota.Izvo zvimisikidzo zvemhepo nemvura pane ambient tembiricha zvinoratidzwa muTafura 1.
IM thermal modeling inobva pamafungiro anotevera: 3D steady state, mhirizhonga inoyerera, mhepo igasi rakanaka, negiligible radiation, Newtonian fluid, incompressible fluid, hapana-slip mamiriro, uye nguva dzose zvinhu.Naizvozvo, maequation anotevera anoshandiswa kuzadzisa mitemo yekuchengetedza huwandu, simba, uye simba munzvimbo yemvura.
Muchiitiko chese, iyo misa yekuchengetedza equation yakaenzana net mambure inoyerera musero ine mvura, yakatemwa neformula:
Zvinoenderana nemutemo wechipiri waNewton, mwero wekuchinja kwekufamba kwechikamu chemvura chakaenzana nehuwandu hwemasimba ari kushanda pairi, uye general momentum conservation equation inogona kunyorwa nevector form se:
Matemu ekuti ∇p, ∇∙τij, uye ρg muequation iri pamusoro anomiririra kudzvanywa, viscosity, negiravhiti, zvichiteerana.Midhiya yekutonhodza (mhepo, mvura, mafuta, nezvimwewo) inoshandiswa sezvinotonhodza mumakina inowanzoonekwa seNewtonian.Iwo equations anoratidzwa pano anongosanganisira hukama hwemutsara pakati pekugera kushushikana uye velocity gradient (strain rate) perpendicular kune shear direction.Tichifunga nezve nguva dzose viscosity uye kuyerera kwakadzikama, equation (12) inogona kuchinjwa kuita 31:
Zvinoenderana nemutemo wekutanga we thermodynamics, mwero wekushanduka kwesimba remvura inoyerera yakaenzana nehuwandu hwekupisa hwemambure hunogadzirwa nechikamu chemvura uye simba remambure rinogadzirwa nechikamu chemvura.Kune Newtonian compressible viscous kuyerera, iyo simba rekuchengetedza equation inogona kuratidzwa se31:
uko Cp ndiko kupisa kwesimba pakumanikidzwa kwakasimba, uye izwi rekuti ∇ ∙ (k∇T) rine hukama nekupisa kwekupisa kuburikidza nemuganhu wesero remvura, apo k inoreva thermal conductivity.Kushandurwa kwesimba remagetsi mukupisa kunoonekwa maererano ne \(\varnothing\) (kureva, iyo viscous dissipation function) uye inotsanangurwa se:
Ipo \(\ rho\) iko density yemvura, \(\mu\) ndiyo viscosity yemvura, u, v uye w ndiyo inogoneka yegwara x, y, z yemvura velocity, zvichiteerana.Iri izwi rinotsanangura kushandurwa kwesimba remagetsi kuita simba rinopisa uye rinogona kuregererwa nokuti rinongokosha chete kana viscosity yemvura yakanyanyisa uye velocity gradient yemvura yakakura zvikuru.Panyaya yekuyerera kwakadzikama, inogara ichipisa uye kupisa conductivity, iyo equation yesimba inogadziridzwa sezvizvi:
Aya ekutanga equation anogadziriswa kuti laminar kuyerera muCartesian coordinate system.Nekudaro, semamwe akawanda matambudziko ehunyanzvi, kushanda kwemichina yemagetsi kunonyanya kuenderana nekuyerera kwemhirizhonga.Naizvozvo, aya maequation akagadziridzwa kuita iyo Reynolds Navier-Stokes (RANS) avhareji nzira ye turbulence modelling.
Mubasa iri, chirongwa che ANSYS FLUENT 2021 cheCFD yekuenzanisira nemamiriro emuganhu anoenderana chakasarudzwa, senge modhi yakatariswa: injini yeasynchronous ine mhepo inotonhorera ine simba re100 kW, dhayamita yerotor 80.80 mm, dhayamita ye stator 83.56 mm (mukati) uye 190 mm (kunze), mukaha wemhepo we 1.38 mm, kureba kwe234 mm, chiyero , kukora kwembabvu 3 mm..
Iyo SolidWorks mhepo-yakatonhorera injini modhi yobva yaunzwa mu ANSYS Fluent uye inoteedzerwa.Mukuwedzera, zvigumisiro zvakawanikwa zvinoongororwa kuti zvive nechokwadi chekururama kwekuenzanisa kunoitwa.Uye zvakare, iyo yakabatanidzwa mhepo- uye mvura-yakatonhorera IM yakateedzerwa ichishandisa SolidWorks 2017 software uye inofananidzwa uchishandisa ANSYS Fluent 2021 software (Mufananidzo 4).
Izvo zvakagadzirirwa uye zviyero zvemuenzaniso uyu zvakafuridzirwa neSiemens 1LA9 aluminium series uye inofananidzwa muSolidWorks 2017. Muenzaniso wacho wakagadziridzwa zvishoma kuti uenderane nezvinodiwa zvepurogiramu yekufananidza.Shandura modhi dzeCAD nekubvisa zvisingadiwe zvikamu, kubvisa mafiritsi, chamfers, uye nezvimwe paunenge uchimodhera neANSYS Workbench 2021.
A dhizaini innovation ndiro jekete remvura, kureba kwaro kwakatemwa kubva pamigumisiro yekufananidza yemuenzaniso wekutanga.Dzimwe shanduko dzakaitwa kumvura bhachi simulation kuti uwane mhedzisiro kana uchishandisa chiuno mu ANSYS.Zvikamu zvakasiyana-siyana zveIM zvinoratidzwa mufig.5a–f.
(A).Rotor musimboti uye IM shaft.(b) IM stator musimboti.(c) IM stator mhepo.(d) Chimiro chekunze cheMI.(e) IM bhachi remvura.f) musanganiswa wemhepo nemvura yakatonhodzwa IM modhi.
Iyo shaft-yakaiswa fan inopa inogara ichiyerera mhepo ye10 m/s uye tembiricha ye30 °C pamusoro pezvimbi.Kukosha kweyero kunosarudzwa kusarudzwa zvichienderana nekukwanisa kweropa rinoongororwa munyaya ino, iyo yakakura kudarika iyo inoratidzwa mumabhuku.Iyo inopisa nzvimbo inosanganisira rotor, stator, stator windings uye rotor cage bars.Zvinhu zve stator uye rotor isimbi, ma windings uye cage tsvimbo ndeyemhangura, chimiro uye mbabvu ialuminium.Kupisa kunogadzirwa munzvimbo idzi kunokonzerwa nemagetsi emagetsi, zvakadai sekupisa kweJoule apo kunze kwekunze kunopfuudzwa nemhangura yemhangura, pamwe chete nekuchinja mune magnetic field.Kupisa kusunungurwa kwemazinga ezvikamu zvakasiyana-siyana zvakatorwa kubva kumabhuku akasiyana-siyana anowanikwa kune 100 kW IM.
Yakabatanidzwa mhepo-yakatonhorera uye mvura-yakatonhorera IMs, kunze kwemamiriro ari pamusoro apa, yaisanganisirawo jekete remvura, umo kupisa kwekupisa uye simba repombi zvinodiwa zvakaongororwa kune zvakasiyana-siyana zvekuyerera kwemvura (5 l / min, 10 l / min. uye 15 l/min).Iyi valve yakasarudzwa sevhavha shoma, sezvo zvigumisiro hazvina kuchinja zvakanyanya pakuyerera pasi pe5 L / min.Mukuwedzera, chiyero chekuyerera che 15 L / min chakasarudzwa seyakanyanya kukosha, sezvo simba rekupomba rakawedzera zvakanyanya pasinei nokuti kutonhora kwakaramba kuchidonha.
Yakasiyana-siyana IM modhi yakaunzwa kunze mu ANSYS Fluent uye zvakare yakagadziridzwa uchishandisa ANSYS Dhizaini Modeler.Uyezve, bhokisi rakagadzirwa nebhokisi rine zviyero zve 0.3 × 0.3 × 0.5 m rakavakwa kutenderedza AD kuti riongorore mafambiro emhepo kutenderedza injini uye kudzidza kubviswa kwekupisa mumhepo.Ongororo yakafanana yakaitwa kune yakabatanidzwa mhepo- uye mvura-yakatonhorera IMs.
Iyo IM modhi inoenzanisirwa uchishandisa CFD neFEM nhamba nzira.Meshes akavakwa muCFD kugovera domain mune imwe nhamba yezvikamu kuitira kuwana mhinduro.Tetrahedral meshes ane saizi yechinhu chakakodzera anoshandiswa kune yakajairwa yakaoma geometry yezvikamu zveinjini.Ese mainterface akazadzwa ne10 akaturikidzana kuti awane echokwadi pamusoro pekupisa kupisa mhedzisiro.Giridhi geometry yemhando mbiri dzeMI inoratidzwa muFig.6a, b.
Iyo equation yesimba inokutendera iwe kuti udzidze kutamisa kupisa munzvimbo dzakasiyana dzeinjini.Iyo K-epsilon turbulence modhi ine yakajairwa madziro mabasa yakasarudzwa kuenzanisira mhirizhonga kutenderedza kunze.Iyo modhi inotora mukufunga kinetic simba (Ek) uye mhirizhonga dissipation (epsilon).Mhangura, aruminiyamu, simbi, mweya nemvura zvakasarudzirwa zvivakwa zvavo zvakajairwa kuti zvishandiswe mumashandisirwo azvo.Kupisa kupisa kwemazinga (ona Tafura 2) inopiwa sezvipimo, uye mamiriro akasiyana-siyana enzvimbo yebhatiri akaiswa ku15, 17, 28, 32. Mhepo inomhanya pamusoro pemotokari yemotokari yakaiswa ku 10 m / s yemhando dzose dzemotokari, uye mu. kuwedzera, zvitatu zvakasiyana-siyana zvemvura zvakatorwa munhoroondo yejasi remvura (5 l / min, 10 l / min uye 15 l / min).Kuti zvive nekururama kukuru, zvakasara zveese equation zvakaiswa zvakaenzana ne1 × 10–6.Sarudza iyo SIMPLE (Semi-Implicit Method yePressure Equations) algorithm kugadzirisa iyo Navier Prime (NS) equations.Mushure mekutanga kwehybrid kwapera, iyo setup inomhanyisa mazana mashanu, sezvakaratidzwa muFigure 7.
Nguva yekutumira: Jul-24-2023