Kuyika Shaft Yamagalimoto Kumapangitsa Kudalirika Kwa Ma Inverter-Powered Motors

Mainjiniya oyang'anira pamwamba pa nyumba zamalonda kapena mafakitale amakonzanso ma motors nthawi zonse ndikuyang'ana zizindikiro zina za kutopa, ndipo popanda zida zodzitetezera kapena mapulogalamu owongolera olosera zam'tsogolo kuti apereke zidziwitso, mainjiniya angayime ndikuganiza, "Kodi ma mota omwe ali kukula?"Kodi ukukulirakulira, kapena ndi malingaliro anga chabe?"Masensa amkati a injiniya wodziwa bwino (kumva) ndi ma hunches (ma alarm oneneratu) agalimoto amatha kukhala olondola, pakapita nthawi, zonyamula zili pakati pomwe palibe amene akudziwa.Kuvala msanga pamlanduwo, koma chifukwa chiyani?Dziwani chifukwa cha "chatsopano" ichi cholepheretsa kupirira ndipo dziwani momwe mungapewere pochotsa ma voltages wamba.

Chifukwa chiyani ma mota amalephera?

Ngakhale pali zifukwa zambiri zosiyana za kulephera kwa galimoto, chifukwa choyamba, nthawi ndi nthawi, chimakhala ndi kulephera.Ma motors a mafakitale nthawi zambiri amakumana ndi zinthu zosiyanasiyana zachilengedwe zomwe zimatha kusokoneza moyo wagalimoto.Ngakhale kuipitsidwa, chinyezi, kutentha kapena kutsitsa kolakwika kungayambitse kulephera kubereka msanga, chodabwitsa china chomwe chingayambitse kulephera ndi mphamvu yamagetsi wamba.

Common mode voltage

Ma motors ambiri omwe amagwiritsidwa ntchito masiku ano amathamanga pamagetsi odutsa mzere, zomwe zikutanthauza kuti amalumikizidwa mwachindunji ndi mphamvu ya magawo atatu omwe amalowa m'malo (kudzera pa choyambira).Magalimoto oyendetsedwa ndi ma frequency frequency ayamba kuchulukirachulukira popeza ntchito zakhala zovuta kwambiri pazaka makumi angapo zapitazi.Ubwino wogwiritsa ntchito ma frequency frequency drive poyendetsa mota ndikuwongolera liwiro pamachitidwe monga mafani, mapampu ndi ma conveyor, komanso kuyendetsa katundu moyenera kuti apulumutse mphamvu.

Kuipa kumodzi kwa ma drive frequency osinthika, komabe, ndikuthekera kwa ma voltages wamba, komwe kumatha kuyambitsidwa ndi kusalinganika pakati pa ma voliyumu agawo atatu agalimoto.Kusintha kothamanga kwambiri kwa pulse-width-modulated (PWM) inverter kumatha kuyambitsa zovuta pama windings ndi ma mayendedwe, ma windings amatetezedwa bwino ndi inverter anti-spike insulation system, koma rotor ikawona ma spikes akuwonjezeka, mafunde apano. imafunafuna Njira yochepetsera kukana pansi: kudzera pama bere.

Magalimoto amapangidwa ndi mafuta, ndipo mafuta omwe ali mumafuta amapanga filimu yomwe imakhala ngati dielectric.M'kupita kwa nthawi, dielectric iyi imasweka, mlingo wa voliyumu mu shaft ukuwonjezeka, kusalinganika kwamakono kumafuna njira yochepetsera kukana kupyolera muzitsulo, zomwe zimapangitsa kuti kubera ku arc, komwe kumadziwika kuti EDM (Electrical Discharge Machining).M'kupita kwa nthawi, kugwedezeka kosalekeza kumeneku kumachitika, malo omwe ali pamwamba pa mipikisano yonyamula amatha kukhala osasunthika, ndipo tizidutswa tating'ono tachitsulo mkati mwa thumbalo timatha kusweka.Pamapeto pake, zinthu zowonongekazi zimayenda pakati pa mipira yonyamulira ndi mipikisano yothamanga, kumapanga zowononga zomwe zingayambitse chisanu kapena ma grooves (ndipo zimatha kuwonjezera phokoso lozungulira, kugwedezeka, ndi kutentha kwa galimoto).Pamene zinthu zikuipiraipira, ma motors ena amatha kupitiriza kuthamanga, ndipo malingana ndi kukula kwa vutoli, pamapeto pake kuwonongeka kwa mayendedwe a galimoto kungakhale kosapeweka chifukwa kuwonongeka kwachitika kale.

potengera kupewa

Momwe mungapatutsire mphamvu yapano kuchokera kumayendedwe?Yankho lofala kwambiri ndikuwonjezera shaft pansi kumalekezero amodzi a shaft yamagalimoto, makamaka pamagwiritsidwe omwe ma voltages wamba amatha kukhala ambiri.Kuyika shaft kwenikweni ndi njira yolumikizira chozungulira chozungulira cha mota kuti pansi kudzera mu chimango chamoto.Kuonjezera shaft pansi pa injini (kapena kugula galimoto yoyikiratu) isanakhazikitsidwe kungakhale mtengo wochepa poyerekeza ndi mtengo wokonzekera wokhudzana ndi kunyamula m'malo, osatchula kukwera mtengo kwa nthawi yopuma.

Mitundu ingapo yokhazikitsira shaft ndiyofala m'makampani masiku ano.Kuyika maburashi a kaboni m'mabulaketi kumatchukabe.Izi ndizofanana ndi maburashi wamba a DC, omwe amapereka kulumikizana kwamagetsi pakati pa magawo ozungulira komanso oyima amagetsi..Mtundu watsopano wa chipangizo pamsika ndi chipangizo cha mphete cha fiber brush, zipangizozi zimagwira ntchito mofanana ndi maburashi a carbon poyika ulusi wambiri wa conductive mu mphete kuzungulira tsinde.Kunja kwa mpheteyo kumakhala kosasunthika ndipo nthawi zambiri imayikidwa pamphepete mwa injini, pamene maburashi amakwera pamwamba pa shaft ya injini, kusuntha madzi kupyola maburashi ndi kukhazikika bwino.Komabe, kwa ma motors akuluakulu (pamwamba pa 100hp), mosasamala kanthu za chipangizo chogwiritsira ntchito shaft chomwe chimagwiritsidwa ntchito, nthawi zambiri tikulimbikitsidwa kuti muyike chotchinga chotchinga kumbali ina ya galimoto pamene chipangizo choyika shaft chimayikidwa kuti chiwonetsetse kuti ma voltages onse mu rotor ali. kutulutsidwa kudzera pa chipangizo choyatsira pansi.

Pomaliza

Kuyendetsa pafupipafupi kumatha kupulumutsa mphamvu pazinthu zambiri, koma popanda kukhazikika bwino, kungayambitse kulephera kwa injini msanga.Pali zinthu zitatu zomwe muyenera kuziganizira mukamayesa kuchepetsa ma voliyumu wamba pamagalimoto osintha ma frequency drive: 1) Onetsetsani kuti mota (ndi makina oyendetsa) akhazikika bwino.2) Dziwani kuchuluka kwafupipafupi kwa chonyamulira, chomwe chingachepetse kuchuluka kwa phokoso ndi kusalinganika kwamagetsi.3) Ngati kutsinde kuli kofunikira, sankhani malo oyenera kugwiritsa ntchito.