1. Classification yeDC motors
1. Brushless DC mota:
Iyo brushless DC mota ndeyekuchinjana iyo stator uye rotor yeyakajairwa DC mota.Rotor yayo igineti yekusingaperi kugadzira mhepo-gap flux: iyo stator isimba uye ine akawanda-chikamu mhepo.Muchimiro, yakafanana neyechigarire magineti synchronous mota.Mamiriro eiyo brushless DC mota stator yakafanana neyeyakajairika synchronous mota kana induction mota. Multi-phase windings (matatu-phase, mana-phase, mashanu-phase, etc.) akaiswa mukati mesimbi core. Iwo ma windings anogona kubatanidzwa mune nyeredzi kana delta, uye akabatana neIyo magetsi machubhu e inverter akabatana kune zvine musoro commutation.Iyo rotor inowanzo shandisa zvisingawanzo zvinhu zvepasi zvine simba rekumanikidza uye yakakwirira remanence density senge samarium cobalt kana neodymium iron boron. Nekuda kwenzvimbo dzakasiyana dzemagineti zvinhu mumagineti poles, inogona kupatsanurwa kuita magineti mapango, akaiswa magineti mapango uye mhete yemagineti matanda.Sezvo muviri wemota iri inogara magineti mota, itsika kudaidza iyo brushless DC mota zvakare inonzi inogara magineti brushless DC mota.
Brushless DC mota dzakagadzirwa mumakore achangopfuura nekuvandudzwa kweiyo microprocessor tekinoroji uye kushandiswa kwemagetsi matsva emagetsimidziyo ine high switching frequency uye yakaderera simba rekushandisa, pamwe nekugonesa kwekutonga nzira uye kubuda kweinodhura-inodhura, yepamusoro-yepamusoro-chisingaperi magineti zvinhu. Imwe mhando nyowani yeDC mota yakagadzirwa.
Brushless DC motors haingo chengetedza yakanaka yekumhanyisa mutemo kuita kwechinyakare DC mota, asi zvakare ine zvakanakira kusatsvedza kuonana uye commutation sparks, kuvimbika kwepamusoro, hupenyu hurefu hwesevhisi uye ruzha rwakaderera, saka anoshandiswa zvakanyanya muaerospace, CNC muchina maturusi. , marobhoti, motokari dzemagetsi, nezvimwewo, makombiyuta peripherals uye midziyo yemumba zvakashandiswa zvakanyanya.
Zvinoenderana neyakasiyana nzira dzekupa magetsi, brushless DC mota dzinogona kukamurwa kuita zvikamu zviviri: square wave brushless DC motors, iyo kumashure EMF waveform uye inopa ikozvino waveform ese ari maviri rectangular masaisai, anozivikanwawo serectangular wave permanent magnet synchronous motors; Brushed DC mota, kumashure kwayo EMF waveform uye inopa yazvino waveform ese ari maviri mafungu.
2. Brushed DC motokari
(1) Chisingaperi magineti DC mota
Permanent magineti DC mota division: isingawanzo pasi isingaperi magineti DC mota, ferrite inogara magineti DC mota uye alnico inogara magineti DC mota.
① Rare pasi isingaperi magineti DC mota: Idiki muhukuru uye zvirinani mukuita, asi inodhura, inonyanya kushandiswa mumhepo, makomputa, downhole zviridzwa, nezvimwe.
② Ferrite inogara magineti DC mota: Iyo magineti danda muviri wakagadzirwa neferrite zvinhu yakachipa uye ine kuita kwakanaka, uye inoshandiswa zvakanyanya mumidziyo yemumba, mota, matoyi, maturusi emagetsi nemimwe minda.
③ Alnico inogara magineti DC mota: Inoda kushandisa akawanda akakosha simbi, uye mutengo wakakwira, asi ine yakanaka kuchinjika kune yakanyanya tembiricha. Inoshandiswa muzviitiko apo tembiricha ye ambient yakakwira kana kugadzikana kwekudziya kwemota kunodiwa.
(2) Electromagnetic DC mota.
Electromagnetic DC mota division: inoteedzana inonakidza DC mota, shunt inonakidza DC mota, yakaparadzana kufara DC mota uye komputa inofara DC mota.
① Series inonakidza DC mota: Iyo yazvino yakabatana munhevedzano, yakavharwa, uye iyo munda inomonereka yakabatana munhevedzano neiyo armature, saka iyo magineti mune iyi mota inoshanduka zvakanyanya nekuchinja kweiyo armature ikozvino.Kuti usakonzere kurasikirwa kukuru uye kudonha kwemagetsi mukubhururuka kwemhepo, kudiki kupikisa kwemhepo yekumhanyisa, zviri nani, saka iyo DC inoteedzera mota yekukurudzira inowanzokuvadzwa newaya gobvu, uye nhamba yayo yekutendeuka ishoma.
② Shunt inonakidza DC mota: Iyo munda inomonereka ye shunt inonakidza DC mota yakabatana mukuenderana neiyo armature winding. Se shunt jenareta, iyo terminal voltage kubva kumota pachayo inopa simba kumunda wemhepo; se shunt mota, munda unomonereka Kugovera simba rakafananaine armature, yakafanana neyakasiyana inofara DC mota maererano nekuita.
③ Kunakidzwa kwakasiyana DC mota: Iyo munda inomonereka haina magetsi ekubatanidza ne armature, uye dunhu remunda rinopihwa neimwe DC magetsi.Iyo yemunda iripo saka haina kukanganiswa neiyo armature terminal voltage kana iyo armature ikozvino.
④ Compound-excited DC mota: Iyo komputa-inofadza DC mota ine maviri emanyawi mahwindi, shunt excitation uye akatevedzana mafambiro. Kana iyo magnetomotive simba inogadzirwa neyakatevedzana excitation winding iri munzira imwe chete neiyo magnetomotive simba inogadzirwa neshunt excitation winding, inodaidzwa kuti chigadzirwa musanganiswa excitation.Kana mafambiro emasimba maviri emagnetomotive akapesana, inodaidzwa kunzi differential compound excitation.
2. Kushanda musimboti weDC mota
Kune magineti akareba-akaita semhete akaiswa mukati meDC mota, uye yazvino inopfuura nepacoil pa rotor kugadzira simba reampere. Kana iyo coil iri pa rotor ichienderana nemagnetic field, kutungamira kwemagnetic field kuchachinja kana ichiramba ichitenderera, saka brashi iri pamagumo e rotor inoshandura Mahwendefa ari alternately akabatana, kuitira kuti kutungamira kwe iyo iripo pane coil zvakare inoshanduka, uye kutungamira kwesimba reLorentz rinogadzirwa rinoramba risina kushanduka, saka mota inogona kuramba ichitenderera munzira imwe.
Nheyo yekushanda yejenareta yeDC ndeyekushandura iyo AC electromotive force yakanyudzwa mucoil ye armature kuita DC electromotive simba kana ichiburitswa kubva kumagumo kwebhurashi neanoenda uye commutation mhedzisiro yebhurashi.
Kutungamira kweiyo induced electromotive force inotarwa zvichienderana nerudyi-kutonga (magnetic field line inonongedza muchanza cheruoko, chigunwe chinonongedza kune mafambiro emufambisi, uye kutungamira kwezvimwe zvigunwe zvina ndiko kutungamira kweiyo induced electromotive force in conductor).
Nhungamiro yesimba rinoshanda pane conductor inotarirwa nemutemo wekuruboshwe.Aya maviri emagetsi emagetsi anoumba torque inoshanda pane armature. Iyi torque inodaidzwa kuti electromagnetic torque mumushini wemagetsi unotenderera. Iyo nzira ye torque inotarisana newachi, kuyedza kuita kuti armature itenderere inoenderana newachi.Kana iyi torque yemagetsi ichigona kukunda torque yekupikisa pane armature (senge torque yekupikisa inokonzereswa nekukwenya uye mamwe ma torque), iyo armature inogona kutenderera inopesana newachi.
Nguva yekutumira: Mar-18-2023