Kusanthula kwa vuto la kulephera kwa khalidwe: Mphamvu ya shaft ndiyo yosokoneza makina oyendera injini

Mphamvu ya shaft ndi njira yabwino kwambiri yophera ma mota a ma frequency osiyanasiyana, ma mota akuluakulu,ma mota amphamvu kwambirindi majenereta, ndipo ndi yoopsa kwambiri ku makina oyendetsera injini. Pali milandu yambiri yolephera kwa makina oyendetsera injini chifukwa cha njira zosakwanira zopewera shaft current.

Makhalidwe a shaft current ndi otsika mphamvu yamagetsi ndi okwera mphamvu yamagetsi, ndipo kuwonongeka kwa makina operekera mphamvu yamagetsi kunganenedwe kuti n'kovuta kupewa. Kupanga kwa shaft current kumachitika chifukwa cha shaft voltage ndi closed circuit. Kuti tithetse vuto la shaft current, pali njira ziwiri zothetsera vutoli: kuchotsa shaft voltage kapena kudula circuit.

Kusalingana kwa maginito, mphamvu ya inverter, induction ya electrostatic, static charge ndi kusokoneza kwa mphamvu yakunja zonse zitha kupanga magetsi a shaft. Kutalika kwa magetsi a shaft nthawi zambiri kumakhala kochepa, koma ikafika pamtengo winawake, imadutsa mu filimu ya mafuta odzola a bearing ndikudutsa mu loop yotsekedwa pamwamba pa bearing. Mphamvu yayikulu ya shaft idzapangitsa bearing kuyaka chifukwa cha kutentha kwakanthawi kochepa. Bearing yoyaka ndi shaft current idzasiya chizindikiro chonga bolodi lakusamba pamwamba pa mphete yamkati ya bearing.

Kuti athetse vuto lopewa mphamvu ya shaft current, njira zofunika ziyenera kutengedwa popanga ndi kupanga injini, monga kuwonjezera njira zofunikira zotetezera kutentha kumapeto kwa chivundikiro ndi chivundikiro cha bearing sleeve. Pazinthu zazing'ono, ma bearing oteteza kutentha angagwiritsidwe ntchito, ndipo maburashi a kaboni otayikira amatha kuwonjezedwa panthawi yogwiritsa ntchito. Poganizira za kugwiritsa ntchito, kutenga njira zochotsera zinthu ndi njira yodziwikiratu, pomwe kugwiritsa ntchito njira yosinthira kungayambitse vuto losintha chipangizo cha burashi ya kaboni. Osachepera, dongosolo la burashi ya kaboni siliyenera kukhala ndi mavuto panthawi yokonza injini.
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Ma berea otetezedwa
Kukula ndi mphamvu ya katundu wa ma bearing otetezedwa ndi ofanana ndi a ma bearing wamba a flange. Kusiyana kwake ndikuti ma bearing otetezedwa amatha kuletsa kuyenda kwa magetsi bwino kwambiri. Ma bearing otetezedwa amatha kupewa kuwonongeka komwe kumachitika chifukwa cha dzimbiri lamagetsi. Chifukwa chake, angagwiritsidwe ntchito mu mota kuti atsimikizire kuti ntchito ikuyenda bwino kuposa ma bearing wamba. Ma bearing otetezedwa amatha kupewa kuwonongeka kwa magetsi chifukwa cha mphamvu yoyambitsidwa pa ma bearing ndikuletsa magetsi kuti asawononge mafuta, zinthu zozungulira, ndi njira zoyendera.

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Chifukwa chiyani magetsi a inverter amatulutsa magetsi a shaft?
Pamene mota ikugwiritsidwa ntchito ndi inverter power supply, magetsi amagetsi amakhala ndi zinthu zapamwamba kwambiri, zomwe zimayambitsa kulowetsedwa kwa maginito pakati pa malekezero a stator winding coil, gawo la waya, ndi shaft yozungulira, motero imapanga magetsi a shaft.
Kuzungulira kwa statormota yopanda ulusiimayikidwa mu stator core slot. Pali ma capacitance ogawidwa pakati pa kuzungulira kwa stator winding ndi pakati pa stator winding ndi motor base. Pamene general frequency converter ikugwiritsidwa ntchito pa high carrier frequency, common mode voltage ya inverter imasintha kwambiri, zomwe zimapangitsa leakage current kuchokera ku motor casing kupita ku ground terminal kudzera mu distributed capacitance ya motor winding. Leakage current iyi ikhoza kupanga mitundu iwiri ya electromagnetic interference, radioactive ndi conductive. Chifukwa cha kusalinganika kwa motor magnetic circuit, electrostatic induction ndi common mode voltage ndizomwe zimayambitsa shaft voltage ndi shaft current.