Corona, vim tias tus neeg xyuas pib tsis du tsim cov hluav taws xob tsis sib xws, nyob ib puag ncig lub teb hluav taws xob tsis sib xws, ze ntawm lub electrode nrog lub vojvoog me me ntawm curvature, thaum lub zog nce mus rau qee qib, vim yog huab cua ionization yuav tshwm sim tso tawm, tsim corona.
Los ntawm cov xwm txheej ntawm kev tsim corona, peb tuaj yeem pom tias lub zog hluav taws xob tsis sib xws, tus neeg coj tsis du, thiab qhov hluav taws xob siab txaus yog cov xwm txheej tsim nyog rau kev tsim corona, yog li yuav muaj kev tsim corona thaum kawg ntawmlub cev muaj zog siabwinding, tshwj xeeb tshaj yog rau lub cev muaj zog nrog lub zog ntsuas siab dua 6kV, lub corona ntawm stator winding yuav pom tseeb dua, thiab qhov siab dua qhov voltage, qhov teeb meem corona yuav loj dua. Yog li ntawd, rau cov windings motor high-voltage, kev ntsuas kev kho mob tiv thaiv corona yuav raug nqa tawm los ntawm kev siv cov xov hlau electromagnetic tshwj xeeb thiab ntxiv cov siv tiv thaiv sab nraum lub kauj winding. Rau qhov teeb meem corona ntawm3 theem induction motors, txhua tus neeg txoj kev nkag siab yog qhov tseeb, yog li ntawd vim li cas cov cav hloov pauv zaus kuj muaj lub cim corona?
Lub cev muaj zog hloov pauv los ntawm lub zog hluav taws xob inverter, qhov hluav taws xob tso zis ntawm lub inverter txawv ntawm nthwv dej sine ntawm lub zog hluav taws xob zaus, tab sis qhov nce siab thiab poob siab ntawm nthwv dej square, qhov nthwv dej pulse tshwj xeeb no ua rau lub zog nkag ntawm lub cev muaj zog yuav muaj qhov tsis tu ncua, siab dua li qhov ntsuas hluav taws xob 2 zaug ntawm qhov overvoltage ntse, vim yog qhov hluav taws xob pulse overvoltage sib raug rau qhov ceev ceev heev, yuav ua rau lub cev muaj zog winding hluav taws xob faib tawm tsis sib xws. Txawm hais tias feem ntau lub cev muaj zog hloov pauv yog cov cav hluav taws xob qis, hom fais fab tshwj xeeb raug txim rau cov yam ntxwv tsis sib xws ntawm nws lub zog hluav taws xob winding.
Los ntawm kev tshuaj xyuas cov yam ntxwv ntawm tus lej thiab qhov ntev ntawm kev tig ntawmpeb theem lub cev muaj zog, thawj thiab kawg voj voog ntawm lub winding ntawm lub qis-voltage siab-power lub cev muaj zog dais yuav luag tag nrho cov voltage amplitude, uas kuj yog qhov feem ntau yooj yim rau teeb meem hauv lub cev muaj zog winding. Ntxiv mus, los ntawm kev tshuaj xyuas ntawm cov txheej txheem tso winding, qhov kev puas tsuaj rau thawj tig kauj yog qhov loj dua, yog li qhov kev pheej hmoo loj dua. Qhov no kuj yog qhov laj thawj vim li cas ntau lub tuam txhab tsim lub cev muaj zog muaj kev tiv thaiv tshwj xeeb rau thawj thiab kawg coils. Rau qis-voltage thiab siab-power variable zaus lub cev muaj zog, vim yog lub zog tsis sib xws thiab pulse spike voltage, qhov kawg ntawm lub cev muaj zog winding muaj cov xwm txheej yooj yim rau corona tiam. Txhawm rau tiv thaiv qhov tshwm sim ntawm corona ntawm lub cev muaj zog zaus hloov pauv, lub winding ntawm lub cev muaj zog zaus hloov pauv yuav tsum tau txais cov hlau electromagnetic tshwj xeeb los tiv thaiv corona, thiab cov kev ntsuas tiv thaiv tshwj xeeb yuav tsum tau ua rau thawj thiab kawg coils.
Lub sijhawm tshaj tawm: Cuaj hlis-13-2024