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Bitewe nigiciro cyo gukora no kuramba kwa moteri, ingamba zikwiye zo gucunga ubushyuhe bwa moteri ni ngombwa cyane.Iyi ngingo yateguye ingamba zo gucunga ubushyuhe bwa moteri ya induction kugirango itange igihe kirekire kandi inoze neza.Hiyongereyeho, hakozwe isubiramo ryinshi ryibitabo byuburyo bwo gukonjesha moteri.Nkigisubizo nyamukuru, kubara ubushyuhe bwumuriro mwinshi ukonjesha ikirere gikonjesha moteri ya asinchronous itangwa, urebye ikibazo kizwi cyane cyo gukwirakwiza ubushyuhe.Byongeye kandi, ubu bushakashatsi butanga uburyo bwahujwe hamwe nuburyo bubiri cyangwa bwinshi bwo gukonjesha kugirango uhuze ibikenewe muri iki gihe.Ubushakashatsi bwibanze ku cyitegererezo cya moteri ya 100 kW ikonjesha ikirere hamwe na moteri nziza yo gucunga ubushyuhe bwa moteri imwe, aho kwiyongera gukomeye kwimikorere ya moteri bigerwaho hifashishijwe uburyo bwo gukonjesha ikirere hamwe na sisitemu yo gukonjesha amazi. bikorwa.Sisitemu ikomatanyije ikonjesha kandi ikonjesha amazi yakozwe hifashishijwe SolidWorks 2017 na ANSYS Fluent 2021.Amazi atatu atandukanye (5 L / min, 10 L / min, na 15 L / min) yasesenguwe kuri moteri isanzwe ikonjesha ikirere kandi igenzurwa hakoreshejwe ibikoresho byatangajwe.Isesengura ryerekana ko ku bipimo bitandukanye bitemba (5 L / min, 10 L / min na 15 L / min) twabonye igabanuka ry'ubushyuhe bwa 2,94%, 4.79% na 7.69%.Kubwibyo, ibisubizo byerekana ko moteri ya induction yashyizwemo ishobora kugabanya neza ubushyuhe ugereranije na moteri yinjiza ikonje.
Moteri yamashanyarazi nimwe mubintu byingenzi byavumbuwe na siyansi yubuhanga bugezweho.Moteri y'amashanyarazi ikoreshwa mubintu byose kuva mubikoresho byo murugo kugeza kubinyabiziga, harimo ninganda zitwara ibinyabiziga nindege.Mu myaka yashize, icyamamare cya moteri ya induction (AM) cyiyongereye kubera itara ryinshi ryatangiye, kugenzura umuvuduko mwiza hamwe nubushobozi burenze urugero (Ishusho 1).Moteri ya induction ntabwo ituma amatara yawe yaka gusa, akoresha ibikoresho byinshi murugo rwawe, kuva koza amenyo kugeza Tesla yawe.Ingufu za mashini muri IM zikorwa no guhuza imbaraga za magnetique yumurongo wa stator na rotor.Mubyongeyeho, IM ni amahitamo meza kubera kugabanuka kwamabuye y'isi adasanzwe.Nyamara, imbogamizi nyamukuru ya ADs nuko ubuzima bwabo nubushobozi bwabo byumva cyane ubushyuhe.Moteri ya induction itwara hafi 40% by'amashanyarazi ku isi, ibyo bikaba byadutera gutekereza ko gucunga ingufu z'izi mashini ari ngombwa.
Ikigereranyo cya Arrhenius kivuga ko kuri buri 10 ° C kuzamuka k'ubushyuhe bwo gukora, ubuzima bwa moteri yose bwikubye kabiri.Kubwibyo, kugirango wizere kandi wongere umusaruro wimashini, ni ngombwa kwitondera kugenzura ubushyuhe bwumuvuduko wamaraso.Mu bihe byashize, isesengura ry’ubushyuhe ryarirengagijwe kandi abashushanya ibinyabiziga basuzumye ikibazo kuri peripheri gusa, hashingiwe ku bunararibonye bwo gushushanya cyangwa izindi mpinduka zingana nko guhindagurika kwinshi, n'ibindi. Ubu buryo buganisha ku gukoresha imipaka minini y’umutekano kubi- ibihe byo gushyushya ibintu, bigatuma kwiyongera kwimashini bityo kwiyongera kubiciro.
Hariho ubwoko bubiri bwisesengura ryubushyuhe: isesengura ryumuzunguruko hamwe nuburyo bwo kubara.Inyungu nyamukuru yuburyo bwo gusesengura nubushobozi bwo kubara vuba kandi neza.Nubwo bimeze bityo ariko, hagomba gushyirwaho ingufu nyinshi kugirango dusobanure imirongo ifite ubunyangamugayo buhagije bwo kwigana inzira yubushyuhe.Ku rundi ruhande, uburyo bwo kubara bugabanijwemo ibice bigizwe na comptabilite fluid dinamike (CFD) hamwe nisesengura ryubushyuhe bwubaka (STA), byombi bikoresha isesengura ryibintu bitagira ingano (FEA).Ibyiza byo gusesengura imibare nuko igufasha kwerekana geometrie yigikoresho.Ariko, sisitemu yo gushiraho no kubara birashobora rimwe na rimwe kugorana.Ingingo za siyansi zaganiriweho hepfo ni ingero zatoranijwe zisesengura ryumuriro na electromagnetic ya moteri zitandukanye zigezweho.Izi ngingo zatumye abanditsi biga ibintu byubushyuhe muri moteri idahwitse nuburyo bwo gukonjesha.
Pil-Wan Han1 yakoraga isesengura ryumuriro na electromagnetic ya MI.Uburyo bwisesengura bwumuzingi bwakoreshejwe muburyo bwo gusesengura ubushyuhe, kandi uburyo butandukanye bwibintu bya magnetiki finite ikoreshwa muburyo bwo gusesengura amashanyarazi.Kugirango utange neza kurinda ubushyuhe burenze urugero mubikorwa byose byinganda, ubushyuhe bwa stator buzunguruka bugomba kugereranywa neza.Ahmed et al.2 yatanze icyerekezo cyurwego rwohejuru rwubushyuhe rushingiye kubushyuhe bwimbitse hamwe nubushyuhe bwa termodinamike.Gutezimbere uburyo bwo kwerekana amashyuza kubikorwa byo kurinda ubushyuhe bwinganda inyungu ziva mubisubizo byisesengura no gusuzuma ibipimo byubushyuhe.
Nair et al.3 yakoresheje isesengura rihuriweho na 39 kW IM hamwe nisesengura rya numero ya 3D yumubare kugirango hamenyekane ikwirakwizwa ryumuriro mumashini yamashanyarazi.Ying et al.Ukwezi n'abandi.5 yize ubushyuhe bwimiterere ya IM TEFC ukoresheje CFD.Moderi yinzibacyuho ya LPTN yatanzwe na Todd et al.6.Ubushakashatsi bwubushyuhe bukoreshwa hamwe nubushyuhe bwabazwe bukomoka kuri moderi yatanzwe na LPTN.Peter et al.7 yakoresheje CFD yiga gutembera kwumwuka bigira ingaruka kumyuka yubushyuhe bwa moteri yamashanyarazi.
Cabral et al8 yatanze igitekerezo cyoroshye cya IM yubushyuhe bwa IM aho ubushyuhe bwimashini bwabonetse hakoreshejwe ikigereranyo cyo gukwirakwiza ubushyuhe bwa silinderi.Nategh et al.9 yize sisitemu yo gukwega moteri yikurura ikoresha CFD kugirango igerageze neza ibice byateguwe neza.Rero, ubushakashatsi bwumubare nubushakashatsi burashobora gukoreshwa mukugereranya isesengura ryumuriro wa moteri ya induction, reba fig.2.
Yinye et al.10 yatanze igishushanyo mbonera cyo kunoza imicungire yubushyuhe ukoresheje ibintu bisanzwe byubushyuhe bwibikoresho bisanzwe hamwe nisoko rusange yo gutakaza igice cyimashini.Marco et al.11 yerekanye ibipimo ngenderwaho mugushushanya sisitemu yo gukonjesha hamwe namakoti yamazi kubikoresho byimashini ukoresheje moderi ya CFD na LPTN.Yaohui et al.12 itanga umurongo ngenderwaho utandukanye wo guhitamo uburyo bukonje bukwiye no gusuzuma imikorere hakiri kare mugushushanya.Nell et al.13 yatanze igitekerezo cyo gukoresha moderi ihujwe na electromagnetic-yumuriro wigana kumurongo watanzwe wagaciro, urwego rwibisobanuro hamwe nimbaraga zo kubara kubibazo byinshi.Jean et al.14 na Kim et al.15 bize ubushakashatsi bwikwirakwizwa ryubushyuhe bwa moteri yindimu ikonje ikoresheje umurima wa 3D uhujwe na FEM.Kubara amakuru yinjiye ukoresheje 3D eddy isesengura ryumurima kugirango ubone igihombo cya Joule kandi uyikoreshe mu gusesengura ubushyuhe.
Michel et al.16 yagereranije abafana ba centrifugal basanzwe bakonjesha hamwe nabakunzi ba axial yibishushanyo bitandukanye binyuze mubigereranyo n'ubushakashatsi.Kimwe muri ibyo bishushanyo byageze ku ntera ntoya ariko igaragara mu mikorere ya moteri mugihe ikomeza ubushyuhe bumwe.
Lu et al.17 yakoresheje uburyo bwa magnetiki yumuzunguruko uhwanye na moderi ya Boglietti kugereranya igihombo cyicyuma kuri shitingi ya moteri yinjira.Abanditsi batekereza ko gukwirakwiza magnetiki flux yuzuye mubice byose byambukiranya imbere ya moteri ya spindle ni kimwe.Bagereranije uburyo bwabo nibisubizo byo gusesengura ibintu bitagira ingano na moderi yubushakashatsi.Ubu buryo burashobora gukoreshwa muburyo bwo gusesengura MI, ariko ubunyangamugayo bwabwo ni buke.
18 yerekana uburyo butandukanye bwo gusesengura amashanyarazi yumuriro wa moteri yumurongo wa induction.Muri byo, uburyo bwo kugereranya igihombo cyamashanyarazi muri gari ya moshi nuburyo bwo guhanura izamuka ryubushyuhe bwa moteri ya moteri ikurura.Ubu buryo burashobora gukoreshwa mugutezimbere ingufu za moteri yumurongo wa induction.
Zabdur n'abandi.19 yakoze iperereza ku mikorere yo gukonjesha ikoresheje uburyo butatu bwo kubara.Ikoti ikonjesha ikoresha amazi nkisoko nyamukuru yo gukonjesha ibyiciro bitatu IM, ifite akamaro kububushyuhe nubushyuhe ntarengwa busabwa kuvoma.Rippel n'abandi.20 batanze uburyo bushya bwo gukonjesha amazi bita transvers laminated cool, aho firigo itembera mu turere duto duto twakozwe n’imyobo hagati ya magnetique.Deriszade n'abandi.21 yagerageje gukora ubushakashatsi ku gukonjesha moteri ikurura mu nganda zikoresha ibinyabiziga ukoresheje imvange ya Ethylene glycol n'amazi.Suzuma imikorere yimvange zitandukanye hamwe na CFD na 3D isesengura ryamazi.Ubushakashatsi bwigana bwakozwe na Boopathi et al.22 bwerekanye ko ubushyuhe bwa moteri ikonjesha amazi (17-124 ° C) ari nto cyane ugereranije na moteri ikonjesha ikirere (104-250 ° C).Ubushyuhe ntarengwa bwa moteri ikonje ya aluminium yagabanutseho 50.4%, naho ubushyuhe ntarengwa bwa moteri ya PA6GF30 ikonjesha amazi bugabanukaho 48.4%.Bezukov et.23 yasuzumye ingaruka ziterwa nubunini ku bushyuhe bwumuriro bwurukuta rwa moteri hamwe na sisitemu yo gukonjesha.Ubushakashatsi bwerekanye ko firime ya mm 1.5 yubushyuhe igabanya ihererekanyabubasha 30%, ikongera ingufu za peteroli kandi igabanya ingufu za moteri.
Tanguy et al.24 yakoze ubushakashatsi ku bipimo bitandukanye bitemba, ubushyuhe bwa peteroli, umuvuduko wo kuzunguruka hamwe nuburyo bwo gutera inshinge za moteri zikoresha amavuta yo gusiga nka coolant.Umubano ukomeye washyizweho hagati yikigereranyo cyogukurikirana no gukonjesha muri rusange.Ha et al.25 yatanze igitekerezo cyo gukoresha ibitonyanga bitonyanga nka nozzles kugirango ugabanye neza amavuta ya peteroli kandi ukoreshe neza moteri ikonje.
Nandi et.26 yasesenguye ingaruka za L-shitingi yubushyuhe buringaniye kumikorere ya moteri no gucunga ubushyuhe.Igice cyumuriro wumuriro gishyirwa mumashanyarazi cyangwa gushyingurwa mumashanyarazi, igice cya kondereseri gishyirwaho kandi kigakonjeshwa no kuzenguruka amazi cyangwa umwuka.Bellettre n'abandi.27 yize PCM ikomeye-yamazi yo gukonjesha kuri stator ya moteri yigihe gito.PCM yinjiza imitwe ihindagurika, igabanya ubushyuhe bwumuriro ubika ingufu zubushyuhe bwihishwa.
Rero, imikorere ya moteri nubushyuhe bisuzumwa hakoreshejwe ingamba zitandukanye zo gukonjesha, reba fig.3. Iyi miyoboro ikonjesha yagenewe kugenzura ubushyuhe bwumuyaga, amasahani, imitwe ihindagurika, magnesi, umurambo hamwe nicyapa cyanyuma.
Sisitemu yo gukonjesha amazi izwiho kohereza ubushyuhe neza.Nyamara, kuvoma ibicurane bikikije moteri bitwara imbaraga nyinshi, bigabanya moteri ikora neza.Sisitemu yo gukonjesha ikirere, kurundi ruhande, ni uburyo bukoreshwa cyane kubera igiciro gito kandi cyoroshye cyo kuzamura.Nyamara, iracyakora neza kuruta sisitemu yo gukonjesha.Uburyo bukomatanyirijwe burakenewe bushobora guhuza imikorere yubushyuhe bwo hejuru bwa sisitemu ikonjesha amazi hamwe nigiciro gito cya sisitemu ikonjesha ikirere idakoresheje ingufu zinyongera.
Iyi ngingo irerekana kandi igasesengura gutakaza ubushyuhe muri AD.Uburyo bw'iki kibazo, kimwe no gushyushya no gukonjesha moteri ya induction, byasobanuwe mu gice cyo gutakaza ubushyuhe mu gice cya Induction Motors binyuze muri Cooling Strategies.Gutakaza ubushyuhe bwa moteri ya induction ihinduka ubushyuhe.Kubwibyo, iyi ngingo iraganira ku buryo bwo guhererekanya ubushyuhe imbere muri moteri hakoreshejwe imiyoboro ya convection.Ubushuhe bwubushyuhe bwa IM ukoresheje uburinganire buringaniye, Navier-Stokes / ingero zingana nimbaraga zingana.Abashakashatsi bakoze ubushakashatsi bwisesengura nububare bwa IM kugirango bagereranye ubushyuhe bwimiterere ya stator hagamijwe gusa kugenzura ubutegetsi bwumuriro wa moteri yamashanyarazi.Iyi ngingo yibanze ku isesengura ry’ubushyuhe bwa IM ikonjesha ikirere hamwe nisesengura ryubushyuhe bwa IM ikonje ikonje kandi ikonjesha amazi ukoresheje moderi ya CAD hamwe na simulation ya ANSYS Fluent.Kandi ibyiza byubushyuhe bwa moderi ihuriweho hamwe yuburyo bukonjesha ikirere hamwe na sisitemu ikonjesha amazi birasesengurwa cyane.Nkuko byavuzwe haruguru, inyandiko zavuzwe hano ntabwo ari incamake yimiterere yubuhanzi mubijyanye nubushyuhe bwumuriro no gukonjesha moteri yinduction, ariko irerekana ibibazo byinshi bigomba gukemurwa kugirango habeho imikorere yizewe ya moteri ya induction .
Gutakaza ubushyuhe mubisanzwe bigabanyijemo gutakaza umuringa, gutakaza ibyuma no guterana / gutakaza imashini.
Igihombo cyumuringa nigisubizo cyo gushyushya Joule bitewe nuburwanya bwumuyobora kandi ushobora kubarwa nka 10.28:
aho q̇g nubushyuhe butangwa, I na Ve ni nominal ya voltage na voltage, kimwe, na Re ni umuringa.
Gutakaza ibyuma, bizwi kandi nk'igihombo cya parasitike, ni ubwoko bwa kabiri bw'igihombo butera hystereze na eddy igihombo muri AM, ahanini biterwa n'umwanya wa magneti uhindagurika.Zigereranijwe nuburinganire bwagutse bwa Steinmetz, coefficient zishobora gufatwa nkigihe gihoraho cyangwa gihinduka bitewe nuburyo imikorere10,28,29.
aho Khn ari igihombo cya hystereze gikomoka ku gishushanyo mbonera cy’igihombo, Ken ni eddy igihombo cyubu, N ni indangagaciro ihuza, Bn na f ni impinga ya flux yuzuye ninshuro zishimishije zidafite sinusoidal.Ingano yavuzwe haruguru irashobora kurushaho koroshya ibi bikurikira10,29:
Muri byo, K1 na K2 nimpamvu nyamukuru yo gutakaza no gutakaza eddy igezweho (qec), igihombo cya hystereze (qh), nigihombo kirenze (qex).
Umuyaga wumuyaga hamwe no gutakaza igihombo nimpamvu ebyiri nyamukuru zitera igihombo muri IM.Gutakaza umuyaga no guterana ni 10,
Muri formula, n ni umuvuduko wo kuzunguruka, Kfb ni coefficient yo gutakaza friction, D ni diameter yo hanze ya rotor, l nuburebure bwa rotor, G nuburemere bwa rotor 10.
Uburyo bwibanze bwo guhererekanya ubushyuhe muri moteri ni ukuyobora no gushyushya imbere, nkuko byagenwe na Poisson ingero30 ikoreshwa kururugero:
Mugihe cyo gukora, nyuma yigihe runaka mugihe moteri igeze kumurongo uhagaze, ubushyuhe butangwa burashobora kugereranywa nubushyuhe burigihe bwubushyuhe bwo hejuru.Kubwibyo, dushobora gutekereza ko gutwara imbere muri moteri bikorwa hamwe no kurekura ubushyuhe bwimbere.
Ihererekanyabubasha hagati yimisozi nikirere gikikijwe bifatwa nkaho ari convection ku gahato, iyo amazi ahatirwa kugenda mu cyerekezo runaka n'imbaraga zo hanze.Convection irashobora kugaragazwa nka 30:
aho h ni coefficente yubushyuhe (W / m2 K), A nubuso bwubuso, na ΔT ni itandukaniro ryubushyuhe hagati yubushyuhe bwoherejwe nubushyuhe bwa firigo kuri perpendikulari hejuru.Umubare wa Nusselt (Nu) ni igipimo cyerekana ikigereranyo cyo guhererekanya ubushyuhe bwa convective na congective perpendicular kumupaka kandi ihitamo hashingiwe kubiranga imigezi ya laminari n’imivurungano.Ukurikije uburyo bufatika, umubare wa Nusselt wimivurungano usanzwe uhujwe numubare wa Reynolds numubare wa Prandtl, ugaragazwa nka 30:
aho h ni coefficente yubushyuhe bwa convective (W / m2 K), l nuburebure buranga, λ nubushyuhe bwumuriro bwamazi (W / m K), naho numero ya Prandtl (Pr) ni igipimo cyikigereranyo cya umuvuduko wo gukwirakwiza imbaraga zijyanye no gukwirakwiza ubushyuhe bwumuriro (cyangwa umuvuduko nubunini bugereranije bwurubibi rwumuriro), bisobanurwa nka 30:
aho k na cp nubushyuhe bwumuriro nubushobozi bwihariye bwubushyuhe bwamazi.Muri rusange, umwuka n'amazi nibyo bikonjesha cyane kuri moteri y'amashanyarazi.Ibintu byamazi yumuyaga namazi mubushyuhe bwibidukikije bigaragara mu mbonerahamwe ya 1.
Moderi yubushyuhe bwa IM ishingiye kubitekerezo bikurikira: imiterere ya 3D itajegajega, imivurungano ihindagurika, umwuka ni gaze nziza, imirasire idahwitse, amazi ya Newtonian, amazi adashobora kugabanuka, nta kunyerera, hamwe nibintu bihoraho.Kubwibyo, ibigereranyo bikurikira bikoreshwa mukuzuza amategeko yo kubungabunga imbaga, imbaraga, ningufu mukarere ka mazi.
Muri rusange, ikigereranyo cyo kubungabunga imbaga ingana na net rusange yinjira muri selile hamwe namazi, bigenwa na formula:
Dukurikije itegeko rya kabiri rya Newton, igipimo cy’imihindagurikire y’umuvuduko w’agace k’amazi kangana n’igiteranyo cy’ingufu zikora, kandi ikigereranyo rusange cyo kubungabunga imbaraga zishobora kwandikwa mu buryo bwa vector nka:
Amagambo ∇p, ∇ ∙ τij, na ρg muburinganire bwavuzwe haruguru yerekana igitutu, ubukonje, hamwe nuburemere.Ibitangazamakuru bikonje (umwuka, amazi, amavuta, nibindi) bikoreshwa nka coolant mumashini mubisanzwe bifatwa nka Newtonian.Ingano yerekanwe hano ikubiyemo gusa umurongo uhuza umurongo wogosha no kwihuta kwumuvuduko (umuvuduko ukabije) ugereranije nicyerekezo cyogosha.Urebye guhora kwijimye no gutembera neza, kugereranya (12) birashobora guhinduka kuri 31:
Dukurikije amategeko ya mbere yubushyuhe bwa termodinamike, umuvuduko wimpinduka zingufu zingirakamaro zamazi zingana numubare wubushyuhe bwa net butangwa nigice cyamazi nimbaraga za net ziva mubice byamazi.Kubijyanye na Newtonian compressible viscous flow, ikigereranyo cyo kubungabunga ingufu gishobora kugaragazwa nka31:
aho Cp nubushobozi bwubushyuhe kumuvuduko uhoraho, kandi ijambo ∇ ∙ (k∇T) rifitanye isano nubushyuhe bwumuriro unyuze kumupaka wamazi, aho k yerekana ubushyuhe bwumuriro.Guhindura ingufu za mashini mubushuhe bifatwa mubijyanye na \ (\ varnothing \) (ni ukuvuga imikorere yo gukwirakwiza viscous) kandi bisobanurwa ngo:
Aho \ (\ rho \) nubucucike bwamazi, \ (\ mu \) nubukonje bwamazi, u, v na w nubushobozi bwicyerekezo x, y, z cyumuvuduko wamazi.Iri jambo risobanura ihinduka ryingufu za mashini mu mbaraga zumuriro kandi birashobora kwirengagizwa kuko ni ngombwa gusa mugihe ubwiza bwamazi ari bwinshi cyane kandi umuvuduko w umuvuduko wamazi ni munini cyane.Kubijyanye no gutembera neza, guhorana ubushyuhe bwihariye nubushyuhe bwumuriro, kugereranya ingufu byahinduwe kuburyo bukurikira:
Iringaniza ryibanze ryakemuwe kugirango laminar itembera muri sisitemu yo guhuza ibikorwa bya Cartesian.Ariko, kimwe nibindi bibazo byinshi bya tekiniki, imikorere yimashini zamashanyarazi zifitanye isano cyane cyane numuvurungano.Kubwibyo, ibigereranyo byahinduwe kugirango bibe uburyo bwa Reynolds Navier-Stokes (RANS) bwo kugereranya uburyo bwo kwerekana imidugararo.
Muri iki gikorwa, hatoranijwe gahunda ya ANSYS FLUENT 2021 yo kwerekana imiterere ya CFD hamwe nimbibi zijyanye n’imipaka ihuye, nkurugero rwasuzumwe: moteri idahwitse ifite ubukonje bwo mu kirere ifite ubushobozi bwa kilowati 100, diameter ya rotor 80,80 mm, diameter ya stator mm 83.56 mm (imbere) na mm 190 (hanze), icyuho cyikirere cya mm 1,38, uburebure bwa mm 234, ubwinshi, ubunini bwimbavu 3 mm..
Moderi ya SolidWorks ikonjesha ikirere noneho itumizwa muri ANSYS Fluent kandi ikigana.Mubyongeyeho, ibisubizo byabonetse birasuzumwa kugirango harebwe niba ibyakozwe byakozwe neza.Byongeye kandi, IM ihuriweho hamwe n’amazi akonjesha IM yagereranijwe hifashishijwe porogaramu ya SolidWorks 2017 kandi bigereranywa hakoreshejwe porogaramu ya ANSYS Fluent 2021 (Ishusho 4).
Igishushanyo nubunini bwiyi moderi byahumetswe na Siemens 1LA9 ya aluminiyumu kandi byerekanwe muri SolidWorks 2017. Moderi yahinduweho gato kugirango ihuze ibikenewe na software yigana.Hindura moderi ya CAD ukuraho ibice udashaka, ukuraho fillets, chamfers, nibindi byinshi mugihe ugereranya na ANSYS Workbench 2021.
Igishushanyo mbonera ni ikoti yamazi, uburebure bwayo bwagenwe uhereye kubisubizo byikitegererezo cyambere.Impinduka zimwe zakozwe muburyo bwo kwigana ikoti ryamazi kugirango tubone ibisubizo byiza mugihe ukoresheje ikibuno muri ANSYS.Ibice bitandukanye bya IM byerekanwe mumitini.5a - f.
(A).Rotor yibanze na IM shaft.(b) IM stator yibanze.(c) IM stator ihindagurika.(d) Ikadiri yo hanze ya MI.(e) Ikoti ry'amazi IM.f) guhuza ikirere n'amazi akonje ya moderi ya IM.
Umuyaga ushyizwe mu mwobo utanga umwuka uhoraho wa 10 m / s hamwe nubushyuhe bwa 30 ° C hejuru yimisozi.Agaciro k'igipimo katoranijwe ku bushake bitewe n'ubushobozi bw'umuvuduko w'amaraso wasesenguwe muri iyi ngingo, uruta uwagaragaye mu bitabo.Agace gashyushye karimo rotor, stator, stator ihindagurika hamwe na rotage cage bar.Ibikoresho bya stator na rotor ni ibyuma, kuzunguruka ninkoni ya cage ni umuringa, ikadiri nimbavu ni aluminium.Ubushyuhe butangwa muri utwo turere buterwa na electromagnetic yibintu, nko gushyushya Joule mugihe umuyaga wo hanze unyuze mumuringa wumuringa, kimwe nimpinduka mumashanyarazi.Igipimo cyo kurekura ubushyuhe bwibice bitandukanye byakuwe mubitabo bitandukanye biboneka kuri 100 kW IM.
IMs ikonjesha ikirere hamwe n’amazi akonjesha amazi, usibye ibihe byavuzwe haruguru, yanashyizwemo ikoti y’amazi, aho hashobora gusesengurwa ubushobozi bwo kohereza ubushyuhe hamwe n’ibisabwa ingufu za pompe ku gipimo cy’amazi atandukanye (5 l / min, 10 l / min na 15 l / min).Iyi valve yatoranijwe nkibikoresho byibuze, kubera ko ibisubizo bitahindutse cyane kubitemba munsi ya 5 L / min.Byongeye kandi, umuvuduko wa 15 L / min watoranijwe nkigiciro ntarengwa, kubera ko imbaraga zo kuvoma ziyongereye cyane nubwo ubushyuhe bwakomeje kugabanuka.
Moderi zitandukanye za IM zinjijwe muri ANSYS Fluent kandi zirahindurwa hifashishijwe ANSYS Design Modeler.Byongeye kandi, agasanduku kameze nk'agasanduku gafite uburebure bwa 0.3 × 0.3 × 0.5 m yubatswe hafi ya AD kugira ngo isesengure urujya n'uruza rw'umwuka uzenguruka moteri no kwiga kuvanamo ubushyuhe mu kirere.Isesengura nk'iryo ryakozwe kuri IM- ihuriweho n'amazi akonje.
Moderi ya IM igereranwa hakoreshejwe uburyo bwa numero CFD na FEM.Meshes yubatswe muri CFD kugirango igabanye indangarugero mubice runaka kugirango tubone igisubizo.Tetrahedral meshes hamwe nubunini bukwiye ikoreshwa muburyo rusange bwa geometrike yibigize moteri.Imigaragarire yose yari yuzuyemo ibice 10 kugirango ubone ibisubizo nyabyo byo kohereza ubushyuhe.Urusobe rwa geometrike yuburyo bubiri bwa MI irerekanwa mu gishushanyo.6a, b.
Ingano yingufu igufasha kwiga kohereza ubushyuhe mubice bitandukanye bya moteri.Moderi ya K-epsilon hamwe nibikorwa bisanzwe byurukuta byatoranijwe kugirango bigaragaze imivurungano ikikije hejuru.Icyitegererezo cyita ku mbaraga za kinetic (Ek) no gutandukana (epsilon).Umuringa, aluminium, ibyuma, umwuka n’amazi byatoranijwe kubintu bisanzwe kugirango bikoreshwe mubikorwa byabo.Igipimo cyo gukwirakwiza ubushyuhe (reba Imbonerahamwe 2) gitangwa nkibisubizo, kandi imiterere ya zone itandukanye ya batiri yashyizwe kuri 15, 17, 28, 32. Umuvuduko wikirere hejuru yimodoka washyizwe kuri 10 m / s kuri moteri zombi, no muri hiyongereyeho, ibipimo bitatu bitandukanye byamazi byitabweho ikoti ryamazi (5 l / min, 10 l / min na 15 l / min).Kubisobanuro birambuye, ibisigisigi kuburinganire byose byashyizweho bingana na 1 × 10–6.Hitamo SIMPLE (Semi-Implicit Method for Pressure Equations) algorithm kugirango ukemure Navier Prime (NS).Nyuma yo gutangiza Hybrid irangiye, igenamigambi rizakora 500 iterations, nkuko bigaragara ku gishushanyo 7.
Igihe cyoherejwe: Nyakanga-24-2023