Umsinga we-shaft ngumthombo ophambili wobukrelekrele kwiimoto ezitshintshatshintshayo, iimoto ezinkulu,iimoto ze-voltage ephezulukunye neejenereyitha, kwaye iyingozi kakhulu kwinkqubo yokuthwala iimoto. Kukho iimeko ezininzi zokusilela kwenkqubo yokuthwala iimoto ngenxa yokungabikho kwamanyathelo okuthintela umbane weshaft owaneleyo.
Iimpawu zamandla ombane we-shaft zi-voltage ephantsi kunye ne-current ephezulu, kwaye umonakalo kwinkqubo yokuthwala kunokuthiwa kunzima ukuwuthintela. Ukuveliswa kwamandla ombane we-shaft kungenxa ye-voltage ye-shaft kunye ne-closed circuit. Ukusombulula ingxaki yamandla ombane we-shaft, kukho iindlela ezimbini zokuyisombulula: ukususa amandla ombane we-shaft okanye ukusika amandla ombane we-shaft.
Ukungalingani kwesekethe yemagnethi, umbane we-inverter, ukungeniswa kwe-electrostatic, itshaja engashukumiyo kunye nokuphazamiseka kombane wangaphandle konke oku kunokuvelisa i-voltage ye-shaft. I-amplitude ye-voltage ye-shaft ngokubanzi incinci, kodwa xa ifikelela kwixabiso elithile, iya kugqobhoza ifilimu yeoyile yokuthambisa ye-bearing kwaye idlule kwi-loop evaliweyo kumphezulu we-bearing. Umsinga omkhulu we-shaft uya kubangela ukuba i-bearing itshise ngenxa yobushushu ngexesha elifutshane kakhulu. I-bearing etshiswe ngumsinga we-shaft iya kushiya uphawu olufana nebhodi yokuhlamba kumphezulu wangaphandle weringi yangaphakathi ye-bearing.
Ukusombulula ingxaki yokuphepha umsinga we-shaft, amanyathelo afunekayo kufuneka athathwe kwinkqubo yoyilo kunye neyokwenza imoto, njengokongeza amanyathelo okukhusela ayimfuneko kwisigqubuthelo sokugqibela kunye nesingxobo sebheyaringi. Kwiimveliso ezincinci, iibheringi zokukhusela zingasetyenziswa, kwaye iibhrashi zekhabhoni ezivuzayo zingongezwa ngexesha lokusetyenziswa. Ngokwembono yokusetyenziswa, ukuthatha amanyathelo okukhupha izinto kwizixhobo yindlela eyenzeka kube kanye, ngelixa ukusetyenziswa kokuphambuka kunokubangela ingxaki yokutshintsha isixhobo sebhrashi yekhabhoni. Ubuncinane, inkqubo yebhrashi yekhabhoni akufuneki ibe neengxaki ngexesha lomjikelo wokugcinwa kwemoto.
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Iibheringi ezigqunyiweyo
Ubungakanani kunye nomthamo womthwalo weebheringi ezigqunyiweyo ziyafana nezo zeebheringi zeflange eziqhelekileyo. Umahluko kukuba iibheringi ezigqunyiweyo zinokuthintela ukudlula komsinga kakuhle kakhulu. Iibheringi ezigqunyiweyo zinokuphepha umonakalo obangelwa kukubola kombane. Ke ngoko, zingasetyenziswa kwiimoto ukuqinisekisa ukusebenza okuthembekileyo kuneebheringi eziqhelekileyo. Iibheringi ezigqunyiweyo zinokuphepha isiphumo se-electro-corrosion somsinga ogqunyiweyo kwiibheringi kwaye zithintele umsinga ekonakaliseni igrisi, izinto eziqengqelekayo, kunye neendlela zomdyarho.
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Kutheni umbane we-inverter uvelisa i-voltage ye-shaft?
Xa imoto isebenza ngombane we-inverter, i-voltage yombane iqulethe izinto ze-harmonic eziphezulu, ezibangela ukufakelwa kwe-electromagnetic phakathi kweziphelo ze-coil ezijikelezayo ze-stator, inxalenye yentambo, kunye ne-shaft ejikelezayo, ngaloo ndlela ivelisa i-voltage ye-shaft.
Ukujija kwe-stator yeimoto engangqamaniyoifakiwe kwindawo engundoqo ye-stator. Kukho ii-capacitances ezisasazwayo phakathi kokujika kwe-stator winding naphakathi kwe-stator winding kunye nesiseko se-motor. Xa i-general frequency converter isebenza kwi-carrier frequency ephezulu, i-common mode voltage ye-inverter itshintsha ngokukhawuleza, eya kwenza i-leaking current ukusuka kwi-motor casing ukuya kwi-ground terminal ngokusebenzisa i-distributed distribution ye-motor winding. Le leaking current inokwenza iintlobo ezimbini zokuphazamiseka kwe-electromagnetic, i-radioactive kunye ne-conductive. Ngenxa yokungalingani kwesekethe ye-motor magnetic, i-electrostatic induction kunye ne-common mode voltage zizizathu ze-shaft voltage kunye ne-shaft current.
Ixesha lokuthumela: Agasti-13-2024