Taw qhia
Raws li lub ntiaj teb kev lag luam sector sib zog ua kom decarbonize, hluav taws xob traction tau hloov zuj zus los ntawm kev siv thev naus laus zis mus rau lub hauv paus ntawm kev thauj mus los niaj hnub. Los ntawm kev ntsiag to hluav taws xob sedans ntawm txoj kev hauv nroog mus rau cov tsheb ciav hlau loj thauj khoom thauj khoom thoob plaws ntiaj teb, - lub zog tseem ceeb ntawm kev hloov pauv no yog cov khoom lag luam tshwj xeeb: hluav taws xob traction motor.
Thaum tus qauv hluav taws xob lub cev muaj zog siv cov khoom siv hauv tsev, cov khoom siv conveyor siv thiab HVAC tshuab, lub cev muaj zog traction yog tsim los rau kev ua haujlwm nyuaj dua: txav lub tsheb mus rau hauv qhov xwm txheej hnyav, hloov pauv mus ib txhis. Nws yuav tsum ua kom nrawm nrawm, tswj kev kub ceev, tiv taus cov neeg kho tshuab poob siab thiab ua haujlwm tau zoo tshaj qhov kub thiab txias.
Txawm hais tias koj yog tus neeg nyiam pib, tus tub ntxhais kawm engineering, lossis tus kws tshaj lij kev lag luam tab tom nrhiav qee qhov kev paub yooj yim, daim ntawv qhia pib ua tiav no yuav hais txog yuav ua li cas lub tshuab hluav taws xob traction ua haujlwm, nws cov hom tseem ceeb, cov ntawv thov tseem ceeb, cov txiaj ntsig, thiab kev hloov pauv yav tom ntej ntawm kev lag luam.
Lub traction motor ua haujlwm li cas?
Nyob rau theem pib ntawm lub cev, lub cev muaj zog traction hloov hluav taws xob los ntawm lub zog hluav taws xob (xws li roj teeb, roj cell, lossis catenary) rau hauv lub zog siv tshuab uas tig lub tsheb lub log lossis qag.
Lub hauv paus ntsiab lus ntawm lub cev
Lub cav ua haujlwm ntawm lub cev lub ntsiab lus ntawm electromagnetism. Thaum cov hluav taws xob tam sim no dhau los ntawm cov hlau coil, nws tsim ib qho chaw sib nqus. Thaum lub zog hluav taws xob no tso rau hauv lwm qhov chaw sib nqus, cov hlau nplaum sib cuam tshuam los tsim lub zog sib hloov hu ua torque.
Nyob rau hauv hluav taws xob propulsion, nws yog ib qho tseem ceeb rau dynamically tswj qhov kev sib hloov quab yuam. Tsis zoo li lub cav muaj zog nrog kev sib hloov ceev tas li, lub cev muaj zog traction yuav tsum tsis tu ncua hloov nws lub zog torque thiab kev sib hloov ceev nyob ntawm qhov siab ntawm lub accelerator pedal, txoj kab nqes ntawm txoj kab nqes thiab qhov hnyav ntawm cov khoom thauj.
Cov khoom tseem ceeb
Yuav kom nkag siab tias lub cev muaj zog traction ua haujlwm li cas hauv lub tsheb, nws yog qhov tsim nyog los xav txog nws cov khoom tseem ceeb:
Stator: Lub nplhaib sab nraud ntawm lub cev muaj zog. Nws muaj nruj nreem qhwv tooj liab coils (windings) nyob rau hauv ib tug laminated steel core. Thaum alternating tam sim no (AC) dhau los ntawm cov windings, nws tsim ib rotating magnetic teb.
Rotor: Ib tug rotating puab core txuas nrog lub cev muaj zog ncej. Lub rotor yog entrained los ntawm rotating magnetic teb ntawm lub stator, tsim ib tug neeg kho tshuab torque uas rotates tus tsav ncej los yog qag ntawm lub tsheb.
Inverter thiab Motor Controller: Cov no feem ntau hu ua "lub hlwb" ntawm lub tshuab hluav taws xob. Cov roj teeb muab hluav taws xob ncaj qha (DC), tab sis feem ntau cov traction motors niaj hnub ua haujlwm ntawm alternating tam sim no (AC). Lub inverter converts DC rau AC tam sim no thiab kho qhov zaus thiab amplitude ntawm tam sim no kom meej tswj qhov ceev thiab lub zog tawm ntawm lub cev muaj zog.
Zog Hloov Ib Nrab
Thaum tus neeg tsav tsheb nias lub accelerator pedal, lub teeb liab raug xa mus rau lub tsheb lub chaw tswj hluav taws xob. Tus maub los lub cev muaj zog qhia lub inverter kom kos DC tam sim no los ntawm lub roj teeb high-voltage. Lub inverter hloov nws mus rau hauv polyphase alternating tam sim no thiab muab nws mus rau stator. Qhov tshwm sim ntawm cov teb sib nqus ua rau lub rotor tig, coj lub zog tig los ntawm kev txo qis gearbox ncaj qha mus rau lub log tsav.
Main hom traction motors
Cov kws tsim qauv xaiv cov cav sib txawv raws li qhov hnyav ntawm lub tsheb, lub hom phiaj kev ua haujlwm, cov peev nyiaj tsim khoom thiab cov khoom sib txuas. Muaj peb lub ntsiab lub cev muaj zog topologies uas tswj kev lag luam.
Permanent Magnet Synchronous Tsav (PMSM)
Cov hlau nplaum ruaj khov synchronous lub cev muaj zog tam sim no yog qhov kev xaiv nrov tshaj plaws hauv cov neeg caij tsheb hluav taws xob thiab lub teeb ua lag luam tsheb.
Hauv PMSM, lub rotor muaj cov hlau nplaum ruaj khov, feem ntau yog tsim los ntawm cov khoom siv hauv ntiaj teb tsawg xws li neodymium, hlau thiab boron. Txij li thaum lub rotor twb muaj ib tug tas mus li magnetic teb, lub cev muaj zog tsis tas yuav nkim zog tsim nyob rau hauv lub rotor nws tus kheej.
Cov txiaj ntsig tseem ceeb: Kev siv hluav taws xob tshwj xeeb, lub zog siab ceev, nrog rau qhov loj me thiab qhov hnyav.
Qhov tsis zoo tseem ceeb: Kev cia siab rau cov ntaub ntawv tsis tshua muaj hauv ntiaj teb, uas ua rau tus nqi ntawm cov khoom siv raw thiab nthuav tawm cov tuam txhab kom muab cov saw hlau txaus ntshai.
AC asynchronous lub cev muaj zog
Keeb kwm tsim los ntawm Nikola Tesla, AC induction lub cev muaj zog tsis tso siab rau cov hlau nplaum ruaj khov. Hloov chaw, qhov hloov pauv tam sim no hauv stator induces magnetic teb nyob rau hauv lub rotor core. Vim hais tias lub rotor lub magnetic teb yog induced es tsis ncaj qha synchronized, lub rotor rotates qeeb qeeb dua stator lub magnetic teb - qhov tshwm sim no hu ua "slip".
Cov txiaj ntsig tseem ceeb: Kev ua haujlwm siab, ua haujlwm siab thermal loads, kev lag luam tsim khoom thiab ua tiav tsis muaj cov hlau nplaum hauv ntiaj teb tsawg. Thaum tsis siv, lub induction lub cev muaj zog tuaj yeem ua haujlwm yam tsis muaj kev sib nqus, ua rau nws zoo tagnrho rau kev pabcuam axles hauv txhua lub log tsav, dual-lub cev muaj zog tsheb.
Qhov tsis zoo ntawm qhov tseem ceeb: Kev ua haujlwm me ntsis ntawm qhov nrawm qis thiab siab dua cov cua sov sab hauv ntawm cov khoom siv siab.
Switched Reluctance Motors (SRM) thiab New Generation Magnetic Designs
Hloov tsis kam lub cev muaj zog siv cov qauv yooj yim rotor tsim los ntawm cov hlau zoo li daim hlau, uas tshem tawm cov hlau nplaum ruaj khov thiab tooj liab rotor windings. Lub rotor yog ua raws li cov magnetic teb tsim los ntawm kev siv lub hwj chim hauv series rau stator ncej.
Cov txiaj ntsig tseem ceeb: Kev ntseeg siab heev, tsis tshua muaj nqi tsim khoom, siab ua txhaum cai thiab tshwj xeeb thermal stability.
Qhov tsis zoo tseem ceeb: keeb kwm muaj suab nrov, kev vibration thiab hnyav (NVH), txawm hais tias niaj hnub tswj algorithms tau ceev ceev cov kev txwv no.
Cov ntawv thov tseem ceeb hauv ntau yam kev lag luam
Lub versatility ntawm lub traction motor tau ua kom nws cov kev siv nyob rau hauv yuav luag txhua ntu ntawm niaj hnub thauj.
Cov neeg caij tsheb fais fab (EV thiab HEV)
Hauv cov roj teeb hluav taws xob tsheb (BEVs) thiab plug-in hybrid tsheb (PHEVs), traction motors yog lub hauv paus ntawm propulsion. Cov tsheb hluav taws xob niaj hnub no feem ntau siv ib lub cev muaj zog ntawm ib lub qag kom txuag tau lub zog, lossis kev teeb tsa dual-lub cev muaj zog (ib lub cev muaj zog ntawm txhua lub qag) kom muaj zog txhua lub log tsav, thrust vectoring thiab xob laim acceleration.
Tsheb thauj mus los
Kev thauj mus los ntawm Railway yog ib qho ntawm thawj zaug siv hluav taws xob traction. Niaj hnub nimno high-ceev neeg nrog caij tsheb ciav hlau, hluav taws xob locomotives, subway tsheb ciav hlau, thiab lub teeb rail systems siv haib induction los yog synchronous traction motors mounted nyob rau hauv wheelset bogies. Railway traction motors yog tsim los muab lub zog txuas ntxiv thiab khiav tsis tu ncua rau kaum tawm txhiab teev nrog kev saib xyuas tsawg.
Cov tsheb lag luam hnyav thiab cov khoom siv tshwj xeeb
Cov tsheb npav hauv nroog, cov tsheb thauj khoom nruab nrab, Chav Kawm 8 cov tsheb laij teb ntev thiab cov tsheb thauj khoom loj mining tau nquag hloov mus rau hluav taws xob traction. Hauv kev ua haujlwm hnyav, lub tshuab hluav taws xob traction muab lub zog qis kawg uas xav tau los rub tawm nrog cov khoom loj, thaum txo qis hauv zos emissions thiab roj nqi.
Cov txiaj ntsig tseem ceeb thiab ntsuas kev ua haujlwm
Yog vim li cas traction electric motors sai hloov internal combustion engines (ICE)? Cov lus teb yog nyob rau hauv lawv lub hauv paus mechanical zoo.
Instant torque thiab dav powerband
Lub cav combustion sab hauv tsim lub siab tshaj plaws torque tsuas yog dhau ntawm qhov nqaim ntawm kev sib hloov ceev, yuav tsum muaj kev sib txuas ntawm ntau qhov ceev tsis siv neeg lossis phau ntawv sib kis kom tswj tau lub cav combustion hauv nws qhov kev ua haujlwm zoo.
Nyob rau hauv sib piv, lub traction motor tsim siab tshaj plaws torque instantly ntawm xoom rpm. Nws tswj kom du thiab txuas ntxiv lub zog xa mus rau ntau qhov kev khiav hauj lwm nrawm, tso cai rau ntau lub tsheb hluav taws xob siv ib qho yooj yim-theem txo gearbox. Qhov no txo qis kev sib kis nyuaj, qhov hnyav thiab cov ntsiab lus tsis ua haujlwm.
High zog efficiency
Internal combustion engines poob 70% mus rau 80% ntawm cov roj lub zog raws li khib nyiab cua sov, ua tau ib tug thermal efficiency ntawm tsuas yog 20-30%. Lub tshuab hluav taws xob niaj hnub hloov pauv ntau dua 90% ntawm lub zog hluav taws xob nkag mus rau hauv kinetic motion, ua rau nws muaj zog ntau dua.
Regenerative braking muaj nuj nqi
Ib qho tseem ceeb tshaj plaws muaj peev xwm ntawm lub cev muaj zog traction yog bidirectional zog hloov dua siab tshiab. Thaum tus neeg tsav tsheb qeeb, lub kaw lus tswj hloov lub cav ua haujlwm hom. Hloov chaw ntawm kev siv hluav taws xob los tig lub rotor, lub inertia ntawm lub tsheb txav ua rau lub cev muaj zog rotor tig rau hauv qhov chaw sib nqus, tig mus rau hauv lub tshuab hluav taws xob.
Cov txheej txheem no ua rau lub tsheb qeeb thaum hloov lub zog kinetic rov qab rau hauv hluav taws xob, xa tam sim no los them lub roj teeb. Regenerative braking ho txhim kho qhov kev ua tau zoo tag nrho thiab txuas ntxiv lub neej ntawm cov neeg kho tshuab nres.
Cov nqi kho mob tsawg thiab muaj kev ntseeg siab
Ua tsaug rau ib qho me me ntawm cov khoom txav mus los piv rau lub tshuab hluav taws xob sab hauv (tsis muaj pistons, crankshafts, spark plugs, roj injectors los yog siv sij hawm), traction motors yuav tsum tsis tshua muaj lub cev hnav. Cov kev tu ncua feem ntau muaj xws li cov kev kuaj xyuas cov coolant thiab bearing lubrication tom qab lub sijhawm ua haujlwm ntev.
Yav tom ntej Trends nyob rau hauv Electric Traction Technology
Hluav taws xob traction lub cev muaj zog thev naus laus zis txuas ntxiv mus sai, uas tau tsav los ntawm cov neeg siv khoom xav tau ntau dua, kev them nqi nrawm dua thiab txo nqi tsheb tag nrho.
High Voltage Systems (800 V Architecture)
Kev lag luam tsheb tau hloov ntawm tus qauv 400-volt hluav taws xob architectures mus rau qib siab 800-volt systems. Qhov hluav taws xob siab dua tso cai rau lub cev muaj zog los tsim tib lub zog nrog tsawg dua tam sim no. Txo qhov tam sim no txo cov cua sov ntawm cov tooj liab windings vim hluav taws xob tsis kam, tso cai rau cov xov hlau thinner, txo qis tag nrho cov khoom hnyav, thiab muaj zog txuas ntxiv.
Advanced Direct Cooling Strategies
Kev tswj qhov kub thiab txias yog qhov tseem ceeb rau kev tswj xyuas qhov ua tau zoo ntawm lub cev muaj zog thiab tiv thaiv kev puas tsuaj mus tas li rau cov qauv hlau nplaum lossis cov hlua hlau. Thaum ntxov traction motors cia siab rau cov cua txias yooj yim los yog cov kua txias sab nraud ntawm lub stator.
Cov qauv tsim tshiab siv cov roj cua txias ncaj qha: cov roj dielectric yog txau ncaj qha mus rau lub ntsej muag kawg ntawm stator windings thiab dhau los ntawm rotor ncej. Qhov kev sib cuag ncaj nraim no tshem tawm cov cua sov kom zoo dua qub, tso cai rau lub zog txuas ntxiv dua tsis muaj kev pheej hmoo ntawm overheating.
Txo kev siv cov khoom siv tsawg hauv ntiaj teb
Vim yog -kev txhawj xeeb ntawm ib puag ncig thiab kev txwv thaj chaw ntawm lub ntiaj teb tsis tshua muaj mining, cov tuam txhab siv cav tau nqis peev hauv cov qauv tsim nrog cov hlau nplaum me me lossis tsis muaj hlau nplaum. Kev tsim kho tshiab xws li nws tus kheej zoo siab synchronous motors (EESM), uas siv electromagnetism es tsis txhob siv cov hlau nplaum ruaj khov ntawm lub rotor, muab kev ua tau zoo piv rau PMSM yam tsis muaj kev cia siab rau lub ntiaj teb tsis tshua muaj cov ntsiab lus.
Xaus
Lub - traction lub cev muaj zog ntau dua li kev hloov rau lub cav roj av; nws yog ib tug high-tech, npaum thiab ntau yam technology uas enables lub ntiaj teb no hloov mus rau ib puag ncig tus phooj ywg thauj.
Los ntawm kev hloov cov hluav taws xob hluav taws xob hluav taws xob rau hauv lub zog tam sim no nrog kev ua haujlwm tshwj xeeb, traction motors fais fab txhua yam los ntawm xoom-emission neeg caij tsheb mus rau cov tsheb ciav hlau ntev ntev. Raws li kev nce qib hauv high-voltage architectures, kev tsim tsis muaj hlau nplaum thiab cov tshuab cua txias ncaj qha nrawm nrawm, lub cev muaj zog traction yuav nyob twj ywm hauv plawv ntawm kev hloov pauv tshiab rau ntau tiam tom ntej.
