Lub luag haujlwm ntawm kev hloov fais fab mov transformers
Hloov fais fab mov transformer thiab switching tube ua ke tsim ib tug kheej-excited (los yog lwm yam excitation) hom intermittent oscillator, thiaj li hais tias cov input DC voltage hloov mus rau hauv high-frequency mem tes voltage.
Ua lub luag haujlwm ntawm lub zog hloov pauv thiab hloov pauv. Nyob rau hauv lub flyback Circuit Court, thaum lub switching yog nyob rau, lub transformer converts lub zog hluav taws xob mus rau hauv magnetic teb zog khaws cia, thaum lub switching yog tawm ces tso tawm. Nyob rau hauv ib lub voj voog rau pem hauv ntej, thaum qhov hloov pauv, qhov hluav taws xob input yog nkag ncaj qha mus rau lub load thiab lub zog yog khaws cia rau hauv lub zog cia inductor. Thaum lub tshuab hluav taws xob raug kaw, lub zog hloov mus rau qhov chaw thau khoom los ntawm qhov chaw cia khoom inductor.
Lub input DC voltage yog hloov dua siab tshiab rau hauv qhov xav tau tsawg voltage.
Classification ntawm switching fais fab mov transformer
Switching fais fab mov transformer muab faib ua ib qho excitation switching fais fab mov transformer thiab ob chav excitation switching fais fab mov transformer, ob hom kev hloov fais fab mov transformer ua hauj lwm txoj cai thiab cov qauv tsis zoo ib yam. Lub input voltage ntawm ib qho excitation switching fais fab mov transformer yog unipolar mem tes, thiab nws kuj tau muab faib ua rau pem hauv ntej thiab thim rov qab excitation voltage tso zis; thaum lub input voltage ntawm ob excitation switching fais fab mov transformer yog bipolar pulse, feem ntau bipolar mem tes voltage tso zis.
Yam ntxwv parameter ntawm switching fais fab mov transformer
Voltage ratio: qhov piv ntawm thawj voltage mus rau theem nrab voltage ntawm lub transformer.
DC tsis kam: piv txwv li tooj liab kuj.
Kev ua tau zoo: uas yog, lub zog tso zis / tawm tswv yim * 100 [%].
Rwb thaiv tsev tsis kam: lub transformer ntawm cov windings thiab cov tub ntxhais ntawm lub rwb thaiv tsev ntawm lub peev xwm.
Kev ua haujlwm ntawm lub zog hluav taws xob: transformer hauv 1 thib ob lossis 1 feeb tuaj yeem tiv taus qhov ntsuas ntawm qhov ntsuas hluav taws xob.
Hloov lub zog transformer muaj pes tsawg leeg
Hloov fais fab transformer cov ntaub ntawv tseem ceeb: cov khoom sib nqus, cov ntaub ntawv hlau thiab cov ntaub ntawv rwb thaiv tsev yog lub hauv paus ntawm kev hloov pauv hloov pauv.
Cov ntaub ntawv sib nqus: hloov cov khoom siv sib nqus sib nqus siv rau cov khoom sib nqus ferrite, raws li nws muaj pes tsawg leeg thiab daim ntawv thov zaus tuaj yeem muab faib ua ob pawg ntawm MnZn system thiab NiZn system. Cov qub muaj ib tug siab permeability thiab siab saturation magnetic induction, nyob rau hauv nruab nrab-frequency thiab tsawg-frequency range nrog tsawg poob. Muaj ntau ntau hom qauv, xws li EI hom, E hom, EC hom, thiab lwm yam.
Hlau cov ntaub ntawv - enamelled hlau: feem ntau yog siv rau winding me me hluav taws xob transformers enamelled hlau nrog siab zog polyester enamelled hlau (QZ) thiab polyurethane enamelled hlau (QA) ob yam. Raws li lub thickness ntawm cov xim txheej yog muab faib ua 1 hom (nyias xim hom) thiab 2 hom (thick xim hom) ob hom. Cov yav tas los insulating txheej rau polyester lacquer, nrog superior kub tsis kam, rwb thaiv tsev tsis kam mus txog 60kv / mm; tom kawg insulating txheej ntawm polyurethane lacquer, nrog nws tus kheej-nplaum, nws tus kheej-welding zog (380 degree), tuaj yeem ncaj qha welded yam tsis tau mus rau lacquer zaj duab xis.
Siab-rhiab nplaum daim kab xev: insulating daim kab xev nrog lub zog hluav taws xob, yooj yim rau siv zoo txhua yam khoom, yog dav siv nyob rau hauv switching transformer coils ntawm txheej, pab pawg neeg rwb thaiv tsev thiab outsourcing rwb thaiv tsev. Yuav tsum ua raws li cov cai hauv qab no: zoo adhesion, tiv thaiv-tev, nrog rau qee lub zog tensile, zoo rwb thaiv tsev, zoo siab tsis kam, nplaim retardant thiab kub tsis kam.
Cov khoom siv pob txha: hloov pauv lub cev pob txha thiab cov pob txha pob txha dav dav sib txawv, ntxiv rau cov kauj raws li rwb thaiv tsev thiab cov ntaub ntawv txhawb nqa, tab sis kuj suav tias yog lub luag haujlwm ntawm tag nrho cov transformer installation thiab qhov chaw, yog li tsim cov pob txha cov ntaub ntawv ntxiv kom tau raws li cov kev cai insulating. , yuav tsum muaj lub zog tensile ntau, thiab nyob rau tib lub sijhawm, txhawm rau tiv thaiv cov pins ntawm qhov tsis kam ntawm cov cua sov, qhov yuav tsum tau muaj ntawm cov khoom siv pob txha ntawm cov cua sov deformation kub siab tshaj 200 degree, cov khoom yuav tsum ua tiav. nplaim retardant, thiab yuav tsum tau ua zoo, yooj yim rau kev ua ntau yam duab.
