Rotating lub cev muaj zog

Muaj ntau ntau hom rotating fais tshuab.Raws li lawv txoj haujlwm, lawv tau muab faib ua cov tshuab hluav taws xob thiab cov motors.Raws li qhov xwm txheej ntawm qhov hluav taws xob, lawv tau muab faib ua DC motors thiab AC motors.Raws li lawv cov qauv, lawv muab faib ua synchronous motors thiab asynchronous motors.Raws li tus naj npawb ntawm theem, asynchronous motors tau muab faib ua peb-theem asynchronous motors thiab ib-theem asynchronous motors;Raws li lawv cov qauv rotor sib txawv, lawv tau muab faib ua lub tawb thiab qhov txhab rotor hom.Ntawm lawv, tawb peb-theem asynchronous motors yooj yim hauv cov qauv thiab tsim.Kev yooj yim, tus nqi qis, kev lag luam txhim khu kev qha, feem ntau siv hauv ntau lub cav, qhov xav tau ntau tshaj plaws.Kev tiv thaiv xob laim ntawm cov tshuab hluav taws xob tig (lub tshuab hluav taws xob, kho lub koob yees duab, lub cev muaj zog loj, thiab lwm yam) yog qhov nyuaj dua li ntawm cov transformers, thiab qhov sib tsoo hluav taws xob feem ntau siab dua li ntawm transformers.Qhov no yog vim hais tias lub tshuab hluav taws xob tig muaj qee cov yam ntxwv sib txawv ntawm lub transformer nyob rau hauv cov nqe lus ntawm rwb thaiv tsev qauv, kev ua tau zoo thiab rwb thaiv tsev kev sib koom ua ke.
(1) Ntawm cov khoom siv hluav taws xob ntawm tib theem voltage, impulse withstand voltage theem ntawm rwb thaiv tsev ntawm lub tshuab hluav taws xob rotating yog qhov qis tshaj.
Yog vim li cas yog: ① Lub cev muaj zog muaj kev kub ceev rotor, yog li nws tsuas tuaj yeem siv cov khoom nruab nrab, thiab tsis tuaj yeem siv cov khoom siv-kua (cov roj hloov pauv) nruab nrab ua ke rwb thaiv tsev zoo li lub tshuab hloov pauv: thaum lub sijhawm tsim khoom, cov khoom nruab nrab yog yooj yim puas. , thiab cov rwb thaiv tsev yog Voids los yog qhov khoob yog nquag tshwm sim, yog li ib feem ntawm cov paug tawm yuav tshwm sim thaum lub sijhawm ua haujlwm, ua rau cov rwb thaiv tsev degradation;② Cov kev ua haujlwm ntawm lub cev muaj zog yog qhov hnyav tshaj plaws, raug rau kev sib xyaw ua ke ntawm cov cua sov, cov khoom siv vibration, noo noo hauv huab cua, muaj kuab paug, electromagnetic kev nyuaj siab, thiab lwm yam, kev laus nrawm nrawm dua;③ Lub tshuab hluav taws xob ntawm lub tshuab hluav taws xob rwb thaiv tsev yog qhov sib xws, thiab nws qhov cuam tshuam coefficient yog ze rau 1. Lub zog hluav taws xob nyob rau hauv overvoltage yog qhov txuas tsis muaj zog.Yog li ntawd, qhov ntsuas voltage thiab rwb thaiv tsev theem ntawm lub cev muaj zog tsis tuaj yeem siab dhau.
(2) Qhov seem hluav taws xob ntawm cov hluav taws xob hluav taws xob siv los tiv thaiv lub tshuab rotating yog ze heev rau lub impulse withstand voltage ntawm lub cev muaj zog, thiab rwb thaiv tsev npoo me me.
Piv txwv li, lub Hoobkas impulse withstand voltage test tus nqi ntawm lub tshuab hluav taws xob tsuas yog 25% mus rau 30% siab tshaj li 3kA seem voltage tus nqi ntawm zinc oxide ntes, thiab cov npoo ntawm cov hlau nplaum sib nqus ntes me dua, thiab cov npoo npoo npoo yuav yog. qis dua thaum lub tshuab hluav taws xob khiav.Yog li ntawd, nws tsis txaus rau lub cev muaj zog tiv thaiv los ntawm kev ntes xob laim.Nws yuav tsum muaj kev tiv thaiv los ntawm kev sib xyaw ntawm cov capacitors, reactors, thiab cable seem.
(3) Lub rwb thaiv tsev inter-tig yuav tsum tau ua kom nruj ntawm cov nthwv dej intruding yog nruj me ntsis txwv.
Vim tias qhov sib cuam tshuam ntawm lub cev muaj zog winding yog me me thiab tsis tu ncua, lub overvoltage nthwv dej tsuas tuaj yeem nthuav tawm raws li tus neeg xyuas pib winding tom qab nws nkag mus rau hauv lub cev muaj zog winding, thiab qhov ntev ntawm txhua qhov tig ntawm winding yog loj dua li ntawm transformer winding. , ua yeeb yam ntawm ob qhov chaw nyob sib ze Lub overvoltage yog proportional rau lub steepness ntawm intruding yoj.Txhawm rau tiv thaiv kev cuam tshuam kev cuam tshuam ntawm lub cev muaj zog, qhov kev sib tw ntawm cov nthwv dej intruding yuav tsum nruj me ntsis txwv.
Hauv luv luv, kev tiv thaiv xob laim ntawm cov tshuab hluav taws xob tig yog siab thiab nyuaj.Nws yog ib qho tsim nyog yuav tau xav txog kev tiv thaiv kev tiv thaiv ntawm lub ntsiab rwb thaiv tsev, inter-tig rwb thaiv tsev thiab nruab nrab point rwb thaiv tsev ntawm winding.