Shaft current inonyanya kuuraya mota dzinochinja-chinja, mota hombe,mota dzine voltage yakakwiranemajenareta, uye zvinokuvadza zvikuru sisitimu yekutakura mabheyaringi emota. Kune zviitiko zvakawanda zvekukundikana kwesisitimu yekutakura mabheyaringi nekuda kwekusakwana kwematanho ekudzivirira shaft current.
Hunhu hwe shaft current ivoltage yakaderera uye high current, uye kukuvara kwe bearing system kunogona kunzi kwakaoma kudzivirira. Kugadzirwa kwe shaft current kunokonzerwa ne shaft voltage uye closed circuit. Kuti ugadzirise dambudziko re shaft current, kune nzira mbiri dzekugadzirisa dambudziko iri: kubvisa shaft voltage kana kudimbura circuit.
Kusawirirana kwemagetsi, inverter power supply, electrostatic induction, static charge uye external power supply interference zvese zvinogona kugadzira shaft voltage. Amplitude yeshaft voltage inowanzova diki, asi kana yasvika pane imwe kukosha, inopwanya nebearing lubricating oil film yopfuura nepa closed loop pamusoro pebearing surface. Large shaft current ichaita kuti bearing ipise nekuda kwekupisa munguva pfupi. Bearing inopiswa neshaft current ichasiya chiratidzo chakaita sebhodhi rekugezesa pamusoro pekunze kwe inner ring yebearing.
Kuti dambudziko rekudzivirira shaft current rigadziriswe, matanho anodiwa anofanira kutorwa mukugadzira nekugadzira mota, akadai sekuwedzera matanho anodiwa ekudzivirira kupisa pakuvhara kwekupedzisira nebearing sleeve. Kune zvigadzirwa zvidiki, mabheya ekudzivirira kupisa anogona kushandiswa, uye mabhurashi ecarbon anobuda anogona kuwedzerwa panguva yekushandiswa. Kubva pakushandiswa, kutora matanho ekubvisa zvikamu chinhu chinoitwa kamwe chete, nepo kushandiswa kwekuchinja kunogona kukonzera dambudziko rekutsiva mudziyo wecarbon brush. Zvirinani, system yecarbon brush haifanirwe kuva nematambudziko panguva yekugadzirisa mota.
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Mabheyaringi akaputirwa
Kukura uye kugona kwekutakura kwemabearings akaputirwa kwakafanana nekwemabearings akaputirwa eflange. Musiyano ndewekuti mabearings akaputirwa anogona kudzivirira kupfuura kwemagetsi zvakanaka. Mabearings akaputirwa anogona kudzivirira kukuvara kunokonzerwa nengura yemagetsi. Nokudaro, anogona kushandiswa mumota kuti ave nechokwadi chekuti mashandiro akavimbika kupfuura mabearings akaputirwa. Mabearings akaputirwa anogona kudzivirira mhedzisiro yemagetsi-yakapwanywa pamagetsi uye kudzivirira magetsi kubva pakukuvadza mafuta, zvinhu zvinotenderera, uye nzira dzemujaho.
02
Sei magetsi emagetsi emagetsi emagetsi (inverter power supply) achigadzira voltage yeshaft?
Kana mota ichishanda ne inverter power supply, power supply voltage ine high-order harmonic components, izvo zvinokonzera electromagnetic induction pakati pe stator winding coil ends, wiring part, uye rotating shaft, zvichiita kuti shaft voltage ibude.
Kutenderedza stator kwemota isina kuenderanairi mukati me stator core slot. Kune ma capacitance akapararira pakati pekutenderera kwe stator winding uye pakati pe stator winding ne motor base. Kana general frequency converter ichishanda pa high carrier frequency, common mode voltage ye inverter inochinja zvakanyanya, iyo inozogadzira leakage current kubva mu motor casing kuenda ku ground terminal kuburikidza ne distributed capacitance ye motor winding. Iyi leakage current inogona kuumba mhando mbiri dze electromagnetic interference, radioactive uye conductive. Nekuda kwekusawirirana kwe motor magnetic circuit, electrostatic induction uye common mode voltage ndizvo zvinokonzera shaft voltage uye shaft current.
Nguva yekutumira: Nyamavhuvhu-13-2024