0.Intshayelelo
I-no-load current kunye nokulahlekelwa kwe-cage-type ye-asynchronous motor yimilinganiselo ebalulekileyo ebonisa ukusebenza kakuhle kunye nokusebenza kombane wemoto. Zizikhombisi zedatha ezinokulinganiswa ngokuthe ngqo kwindawo yokusetyenziswa emva kokuba imoto yenziwe kwaye ilungiswe. Ibonisa amacandelo angundoqo emoto ukuya kwinqanaba elithile - Inqanaba lenkqubo yoyilo kunye nomgangatho wokuvelisa we-stator kunye ne-rotor, i-no-load yangoku ichaphazela ngokuthe ngqo amandla ombane; ilahleko engenamthwalo inxulumene ngokusondeleyo nokusebenza kakuhle kwemoto, kwaye yeyona nto ibonakalayo yovavanyo lovavanyo lokuqala lokusebenza kwemoto phambi kokuba injini iqalise ukusebenza ngokusemthethweni.
1.Izinto ezichaphazela ukungabikho komthwalo wangoku kunye nokulahleka kwemoto
Umjelo okhoyo wokungathwali mthwalo we-squirrel-uhlobo lwesigaba sesithathu se-asynchronous motor ikakhulu ibandakanya i-excitation current kunye ne-active current ngoku- no-load, apho malunga ne-90% yi-excitation yangoku, esetyenziselwa ukuvelisa i-magnetic field ejikelezayo kwaye ithathwa njenge-reactive current, echaphazela amandla factor COSφ yenjini. Ubungakanani bayo bunxulumene nombane we-motor terminal kunye noxinzelelo lwemagnethi yoyilo olungundoqo lwentsimbi; Ngexesha loyilo, ukuba uxinaniso lwemagnethi lukhethwe luphezulu kakhulu okanye amandla ombane angaphezulu kombane olinganisiweyo xa i-motor isebenza, i-iron core iya kuhluthwa, i-excitation yangoku iya kunyuka kakhulu, kwaye i-voltage ehambelana nayo ingenanto. kwaye into yamandla iphantsi, ngoko ke ilahleko engenamthwalo inkulu.Okushiyekile10%Isebenza ngoku, esetyenziselwa ilahleko yamandla eyahlukeneyo ngexesha lokungathwali mthwalo kwaye ichaphazela ukusebenza kakuhle kwemoto.Kwi-motor ene-fixed winding cross-section, i-no-load current ye-motor inkulu, i-current esebenzayo evunyelwe ukuba ihambe iya kuncitshiswa, kwaye umthamo womthwalo wemoto uya kuncitshiswa.Ukungalayishwa kwangoku kwe-cage-type ye-asynchronous motor yesigaba sesithathu ngokubanziI-30% ukuya kwi-70% yangoku ehleliweyo, kwaye ilahleko yi-3% ukuya kwi-8% yamandla alinganisiweyo.. Phakathi kwazo, ukulahleka kobhedu kweenjini ezincinci zamandla zenza umlinganiselo omkhulu, kunye nokulahlekelwa kwentsimbi yeemoto eziphezulu ze-akhawunti kumlinganiselo omkhulu. phezulu.Ilahleko engenamthwalo yeenjini ezinkulu zesakhelo ubukhulu becala yilahleko engundoqo, ebandakanya ukulahleka kwe-hysteresis kunye nelahleko yangoku ye-eddy.Ilahleko yeHysteresis ilingana nesixhobo sombane esingena kumbane kunye nesikwere soxinaniso lwemagnethi. Ilahleko yangoku ye-Eddy ilingana nesikweri soxinaniso lwemagnethi eguquguqukayo, isikwere sobukhulu bezinto ezikwaziyo ukuvunyeleka ngumagnetic, isikwere sefrikhwensi kunye nokungena kwemagnethi. Ukulingana nobukhulu bezinto eziphathekayo.Ukongeza kwilahleko engundoqo, kukwakho nelahleko yovuselelo kunye neelahleko zoomatshini.Xa i-motor inelahleko enkulu yokungabikho komthwalo, unobangela wokungaphumeleli kwemoto unokufumaneka kule miba ilandelayo.I-1) Indibano engafanelekanga, ukujikeleza kwe-rotor engaguqukiyo, umgangatho ombi wokuthwala, igrisi eninzi kwiibheringi, njl. I-2) Ngokungalunganga ukusebenzisa i-fan enkulu okanye i-fan enamacangca amaninzi kuya kwandisa ukukhuhlana komoya. 3 ) Umgangatho we-iron core silicon steel sheet umpofu. I-4 ) Ubude obunganeleyo be-core okanye i-lamination engafanelekanga ibangela ubude obunganeleyo obusebenzayo, okubangelwa ukunyuka kwelahleko kunye nokulahleka kwentsimbi. 5 ) Ngenxa yoxinzelelo oluphezulu ngexesha lokuhlamba, umgca we-insulation we-core silicon sheet sheet watyunyuzwa okanye ukusebenza kwe-insulation layer ye-original insulation layers ayizange ihlangabezane neemfuno.
Injini enye ye-YZ250S-4/16-H, enenkqubo yombane ye-690V/50HZ, amandla angama-30KW/14.5KW, kunye nesantya se-35.2A/58.1A. Emva kokuba uyilo lokuqala kunye nendibano igqityiwe, uvavanyo lwenziwa. I-4-pole no-load current yayingu-11.5A, kwaye ilahleko yayiyi-1.6KW, eqhelekileyo. I-16- pole no-load current yi-56.5A kwaye ilahleko engekho mthwalo yi-35KW. Kukholelwa ukuba i-16-i-pole no-load current inkulu kwaye ilahleko yokungabikho komthwalo inkulu kakhulu.Le motor yinkqubo yokusebenza yexesha elifutshane,ukubaleka kwi10/5min.I-16-I-pole motor isebenza ngaphandle komthwalo malunga1mzuzu. Imoto iyatshisa kwaye iyatshaya.I-motor yachithwa kwaye yenziwa ngokutsha, kwaye yavavanywa kwakhona emva koyilo lwesibini.I-4-ipali akukho-mthwalo okwangokuyi 10.7Akunye nelahleko1.4KW ,into eqhelekileyo;i16-pole akukho-mthwalo yangoku46Akunye nelahleko engenamthwaloyi 18.2KW. Kugwetywa ukuba i-no-load current inkulu kwaye akukho mthwalo Ilahleko isenkulu kakhulu. Uvavanyo lomthwalo olinganisiweyo lwenziwa. Igalelo lamandla lali33.4KW, amandla emvelisoibiyi 14.5KW, kunye nomsinga osebenzayoyayingu 52.3A, ebingaphantsi komlinganiselo wemotoye 58.1A. Ukuba kuvandlakanywa ngokusekwe kuphela kungokunje, umsinga wokungabikho komthwalo wawufanelekile.Nangona kunjalo, kucacile ukuba ilahleko engekho mthwalo inkulu kakhulu. Ngexesha lokusebenza, ukuba ilahleko eyenziwe xa i-motor isebenza iguqulwa ibe amandla obushushu, ubushushu benxalenye nganye yemoto buya kunyuka ngokukhawuleza. Uvavanyo lomsebenzi ongathwali mthwalo lwenziwa kwaye imoto yatshaya emva kokubaleka i-2imizuzu.Emva kokutshintsha uyilo okwesithathu, uvavanyo luphindwe.I-4-ipali akukho-mthwalo okwangokuibingu 10.5Akwaye ilahleko yaba1.35KW, nto leyo eyayiqhelekile;i16-ipali akukho-mthwalo okwangokuibingu 30Akunye nelahleko engenamthwaloibiyi 11.3KW. Kwafunyaniswa ukuba i-no-load current incinci kakhulu kwaye ilahleko engekho mthwalo isenkulu kakhulu. , iqhube uvavanyo lokusebenza olungenamthwalo, kwaye emva kokubalekaku3imizuzu, imotor ishushu kakhulu kwaye yatshaya.Emva kokuyila ngokutsha, uvavanyo lwenziwa.I-4-ipoli ayitshintshanga,i16-ipali akukho-mthwalo okwangokuuya 26a, kunye nelahleko engenamthwaloyi 2360W. Kugwetywa ukuba i-no-load yangoku incinci kakhulu, ilahleko engekhoyo iyinto eqhelekileyo, kwayei16-ipali ibaleka5imizuzu ngaphandle komthwalo, okuqhelekileyo.Ingabonwa ukuba akukho mthwalo ukulahleka kuchaphazela ngokuthe ngqo ukunyuka kobushushu bemoto.
2.Imiba ephambili enempembelelo yokulahleka kwe-motor core
Kwi-low-voltage, i-high-power kunye ne-high-voltage motor ilahleko, ilahleko ye-motor core yeyona nto ibalulekileyo echaphazela ukusebenza kakuhle. Ilahleko ezingundoqo zemotor ziquka ilahleko yentsimbi esisiseko ebangelwa lutshintsho kwintsimi yamagnetic engundoqo, ilahleko ezongezelelweyo (okanye elahlekileyo)kumbindi ngexesha leemeko zokungabikho komthwalo,kunye nokuvuza kwemimandla yamagnetic kunye ne-harmonics ebangelwa ngumsebenzi wangoku we-stator okanye i-rotor. Ilahleko ebangelwa yimagnethi kumbindi wentsimbi.Ilahleko zentsimbi ezisisiseko zenzeka ngenxa yotshintsho kwintsimi yamagnetic engundoqo kumbindi wentsimbi.Olu tshintsho lunokuthi lube lolunye uhlobo lwemagneti, olufana nento eyenzekayo kwi-stator okanye kumazinyo e-rotor yemoto; inokuba yinto ejikelezayo yamagnetization, efana nento eyenzekayo kwi-stator okanye kwidyokhwe yentsimbi yerotor yemoto.Nokuba kukutshintshana kwemagneti okanye imagneti ejikelezayo, i-hysteresis kunye nelahleko yangoku ye-eddy iya kubangelwa kumbindi wentsimbi.Ilahleko engundoqo ixhomekeke ikakhulu kwilahleko yentsimbi esisiseko. Ilahleko engundoqo inkulu, ikakhulu ngenxa yokutenxa kwesixhobo kuyilo okanye izinto ezininzi ezingathandekiyo kwimveliso, okukhokelela kuxinaniso lwemagnethi oluphezulu, isiphaluka esifutshane phakathi kwamaphepha entsimbi ye-silicon, kunye nokunyuka okufihlakeleyo kubukhulu bentsimbi yesilicon. amaphepha. .Umgangatho we-silicon sheet sheet awuhambelani neemfuno. Njengowona mbandela uphambili wemagnethi wemoto, ukuthotyelwa kokusebenza kwephepha lentsimbi yesilicon kunempembelelo enkulu ekusebenzeni kwemoto. Xa kuyilwa, kuqinisekiswa ngokukodwa ukuba ibakala le-silicon sheet sheet lihlangabezana neemfuno zoyilo. Ukongezelela, ibakala elifanayo le-silicon sheet sheet livela kubakhiqizi abahlukeneyo. Kukho iiyantlukwano ezithile kwiipropati eziphathekayo. Xa ukhetha imathiriyeli, kuya kufuneka uzame konke okusemandleni akho ukukhetha izixhobo ezivela kubavelisi bentsimbi ye-silicon elungileyo.Ubunzima bentsimbi yentsimbi abunelanga kwaye iziqwenga azixutywanga. Ubunzima bentsimbi yentsimbi abunelanga, okubangela ukulahleka kwesinyithi ngokugqithisileyo kwangoku kunye nokugqithisa.Ukuba i-silicon sheet sheet inepeyinti engqindilili kakhulu, isekethe yamagnetic iya kuba ngaphezulu. Ngeli xesha, ijika lobudlelwane phakathi kokungabikho komthwalo wangoku kunye ne-voltage iya kugoba ngokunzulu.Ngethuba lokuveliswa kunye nokucutshungulwa kwentsimbi yentsimbi, ukuqhelaniswa kweenkozo kwi-punching surface ye-silicon steel sheet kuya konakaliswa, okubangelwa ukwanda kwelahleko yentsimbi phantsi kwe-induction efanayo yamagnetic. Kwiimotor frequency frequency, ilahleko yentsimbi eyongezelelweyo ebangelwa yi-harmonics kufuneka ithathelwe ingqalelo; oku kufuneka kuthathelwe ingqalelo kwinkqubo yoyilo. Zonke izinto ziqwalaselwe.enye.Ukongeza kwezi zinto zingentla, ixabiso loyilo lokulahleka kwentsimbi yemoto kufuneka lisekelwe kwimveliso yangempela kunye nokucutshungulwa kombindi wentsimbi, kwaye uzame ukuthelekisa ixabiso lethiyori kunye nexabiso langempela.Iigophe zeempawu ezibonelelwa ngababoneleli bezinto eziqhelekileyo zilinganiswa ngokwendlela yesangqa se-Epstein yesikwere, kwaye izalathiso zemagneti zamacandelo ahlukeneyo emoto zahlukile. Le lahleko ikhethekileyo yentsimbi ejikelezayo ayinakuthathelwa ngqalelo okwangoku.Oku kuya kukhokelela ekungahambelani phakathi kwamaxabiso abaliweyo kunye namaxabiso alinganisiweyo ukuya kumaqondo ahlukeneyo.
3.Isiphumo sokunyuka kobushushu bemoto kwisakhiwo se-insulation
Inkqubo yokufudumeza kunye nokupholisa i-motor inzima kakhulu, kwaye ukunyuka kwayo kweqondo lokushisa kuyatshintsha kunye nexesha kwi-curve exponential.Ukuze kuthintelwe ukunyuka kweqondo lokushisa kwemoto ekugqithiseni iimfuno ezisemgangathweni, kwelinye icala, ilahleko eyenziwa yimoto iyancitshiswa; kwelinye icala, amandla okuphelisa ubushushu bemoto ayanda.Njengoko umthamo wemoto enye usanda imihla ngemihla, ukuphuculwa kwenkqubo yokupholisa kunye nokwandisa amandla okuphelisa ubushushu kuye kwaba ngamanyathelo abalulekileyo okuphucula ukunyuka kobushushu bemoto.
Xa i-motor isebenza phantsi kweemeko ezilinganisiweyo ixesha elide kwaye ubushushu bayo bufikelela kuzinzo, ixabiso elivumelekileyo lomda wokunyuka kobushushu becandelo ngalinye lemoto libizwa ngokuba ngumda wokunyuka kobushushu.Umda wokunyuka kobushushu bemoto uchazwe kwimigangatho yesizwe.Umda wokunyuka kweqondo lobushushu ngokusisiseko uxhomekeke kubushushu obuphezulu obuvunyelwe yisakhiwo sokugquma kunye nobushushu bendawo yokupholisa, kodwa ikwanxulumene nezinto ezinjengendlela yokulinganisa ubushushu, ukuhanjiswa kobushushu kunye neemeko zokulahla ubushushu bomoya, kunye ubushushu bokuhamba kobushushu obuvunyelweyo ukuba wenziwe.Umatshini, umbane, umzimba kunye nezinye iipropathi zezinto ezisetyenziswa kwimotor winding insulation structure iya kuthi kancinane ibe mandundu phantsi kwefuthe lobushushu. Xa iqondo lokushisa liphakama ukuya kwinqanaba elithile, iipropati ze-insulation material ziya kuba neenguqu ezibalulekileyo, kunye nokulahleka kobuchule bokukhusela.Kwitekhnoloji yombane, izinto zokugquma okanye iinkqubo zokugquma kwiinjini kunye nezixhobo zombane zihlala zohlulwa zibe ngamanqanaba amelana nobushushu ngokobushushu bazo obugqithisileyo.Xa i-insulation structure okanye inkqubo isebenza kwinqanaba elihambelanayo lobushushu ixesha elide, ngokuqhelekileyo aliyi kuvelisa utshintsho olungafanelekanga.Izakhiwo ezigqumayo zomgangatho othile wokumelana nobushushu azinakusebenzisa zonke izinto zokugquma ezikwibakala elifanayo lokumelana nobushushu. Umgangatho wokumelana nokushisa kwesakhiwo se-insulation sivandlakanywa ngokubanzi ngokuqhuba iimvavanyo zokulinganisa kwimodeli yesakhiwo esisetyenzisiweyo.Isakhiwo se-insulating sisebenza phantsi kwamaqondo okushisa achaziweyo kwaye sinokufikelela ubomi benkonzo yezoqoqosho.Ukufunyanwa kwethiyori kunye nokusebenza kuye kwafakazela ukuba kukho ubudlelwane obucacileyo phakathi kobomi benkonzo yesakhiwo sokugquma kunye nobushushu, ngoko ke bunovelwano kakhulu kubushushu.Kwezinye iimoto ezikhethekileyo, ukuba ubomi babo benkonzo abufunwa ukuba bubude kakhulu, ukuze kuncitshiswe ubungakanani bemoto, ubushushu obuvumelekileyo bemoto bunokunyuswa ngokusekelwe kumava okanye idatha yovavanyo.Nangona iqondo lobushushu lendawo yokupholisa lihluka ngokwenkqubo yokupholisa kunye nesixhobo sokupholisa esisetyenzisiweyo, kwiinkqubo ezahlukeneyo zokupholisa ezisetyenziswayo ngoku, ubushushu bendawo yokupholisa ngokusisiseko buxhomekeke kubushushu be-atmosfere, kwaye ngamanani ayafana nobushushu be-atmosfere. Kuyafana.Iindlela ezahlukeneyo zokulinganisa ubushushu ziya kubangela umahluko phakathi kweqondo lokushisa elilinganisiweyo kunye nobushushu beyona ndawo ishushu kakhulu kwicandelo elilinganiswayo. Ubushushu beyona ndawo ishushu kakhulu kwicandelo elilinganiswayo yisitshixo sokugweba ukuba i-motor inokusebenza ngokukhuselekileyo ixesha elide.Kwezinye iimeko ezikhethekileyo, umda wokunyuka kweqondo lobushushu lokujikeleza kwemoto kaninzi awugqitywanga ngokupheleleyo ngobushushu obuvumelekileyo besakhiwo sokugquma esisetyenzisiweyo, kodwa ezinye izinto kufuneka ziqwalaselwe.Ukonyusa ngakumbi ubushushu bee-motor windings ngokuqhelekileyo kuthetha ukonyuka kwelahleko yemoto kunye nokwehla kokusebenza kakuhle.Ukunyuka kweqondo lokushisa elijikelezayo kuya kubangela ukwanda koxinzelelo lwe-thermal kwizinto zezinye iindawo ezinxulumene nazo.Abanye, njengeempawu ze-dielectric ze-insulation kunye namandla omatshini wezixhobo zetsimbi ze-conductor, ziya kuba nemiphumo emibi; kunokubangela ubunzima ekusebenzeni kwenkqubo yokuthwala i-lubrication.Ke ngoko, nangona ezinye ii-motor windings ngoku zamkela iKlasiI-F okanye izakhiwo ze-Insulation Class H, imida yazo yokunyuka kweqondo lokushisa isahambelana nemigaqo yeCandelo B. Oku akuthatheli ingqalelo kuphela ezinye zezi zinto zingasentla, kodwa kwandisa ukuthembeka kwemoto ngexesha lokusetyenziswa. Iluncedo ngakumbi kwaye inokwandisa ubomi benkonzo yemoto.
4.ukuququmbela
Ukungabikho komthwalo wangoku kunye nokulahlekelwa komthwalo we-cage yesigaba sesithathu se-asynchronous motor kubonakalisa ukunyuka kweqondo lokushisa, ukusebenza kakuhle, amandla ombane, amandla okuqalisa kunye nezinye izibonakaliso eziphambili zokusebenza kwemoto ukuya kwinqanaba elithile. Ingaba ifanelekile okanye ayichaphazeli ngokuthe ngqo ukusebenza kwemoto.Abasebenzi baselebhu yogcino kufuneka bayilawule imithetho ebekiweyo, baqinisekise ukuba iimoto eziqeqeshiweyo ziyawushiya umzi-mveliso, zenze izigwebo kwiimotor ezingasifanelekanga, kwaye zilungise ulungiso lokuqinisekisa ukuba izalathisi zokusebenza kweemoto ziyahlangabezana neemfuno zemigangatho yemveliso.a
Ixesha lokuposa: Nov-16-2023