Kuphi emhlabeni isandi esivela kwi-transformer?

Isandi se-transformer sivela ngaphakathi kwe-transformer.I-transformer isekelwe kumgaqo wokungeniswa kwe-electromagnetic, kunye ne-coil yecala eliphambili kunye ne-coil yecala lesibini efakwe ngaphakathi, kunye ne-silicon sheet yensimbi enezixhobo eziphezulu ze-magnetic conductivity phakathi.Ngaphantsi kwesiqhelo. iimeko, i-coil windings ye-transformer ibalwa ngokwe-cross-sectional area of ​​the core.

Ekubeni kukho i-coil winding, xa iqhagamshelwe kwi-AC 50Hz unikezelo lwamandla, kuya kubakho i-excitation current.Kwi-coil engundoqo ye-AC, kukho iinxalenye ezimbini zokulahleka, ukulahleka okuguquguqukayo kukulahleka kwexesha elifutshane, oko kukuthi, ilahleko yobhedu, iphinde yahlulwe ibe ngamacandelo amabini, oko kukuthi inxalenye yamandla asebenzayo kunye nenxalenye yamandla asebenzayo.

Le "eddy current" yandisa ilahleko ye-transformer kwaye itshisa i-core of transformer, iphakamisa ukushisa kwe-transformer.

Kukho ilahleko yobhedu i-RI ²kuxhathiso lwekhoyili R kunye nokulahleka kwentsimbi (ukulahleka kwe-hysteresis kunye nokulahleka kwangoku kwe-eddy) kumbindi wentsimbi.Ilahleko yentsimbi imalunga nomlinganiso we-Bm ².Xa ukuphindaphindwa konikezelo lwamandla kulungiswa, ilahleko yentsimbi yekhoyili inxulumene namandla ombane osebenzayo. Ngokombono wokuguquguquka okungaguqukiyo U=4.44fNBmS, i-Bm esembindini i ngokulinganayo kwi-voltage esetyenzisiweyo.Ngamanye amazwi, ilahleko yentsimbi iphantse ilingane nesikwere sombane osetyenzisiweyo.

I-transformer inokugweba umsebenzi ngokwesandi sokusebenza.Indlela yokusebenzisa isiphelo sentonga yokuphulaphula kwi-tank ye-fuel ye-transformer, kwaye enye isiphelo sisondele kwindlebe yokuphulaphula ngokucophelela isandi.Ukuba isandi esiqhubekayo "yuyu", kuthetha ukuba i-transformer isebenza ngokuqhelekileyo.Ukuba isandi esithi "yuyu" sinzima kunesiqhelo, khangela i-voltage, yangoku kunye ne-oyile yokushisa ye-transformer ukuze ubone ukuba ibangelwa yi-voltage eninzi okanye i-overload, ukuba akunjalo, ibangelwa kakhulu yintsimbi yentsimbi.Xa usiva isandi esithi "squeak, squeak", khangela ukuba kukho i-flashover kwi-casing surface.Xa isandi "sokuqhekeza" sivakala, kukho ukuchithwa kwe-insulation yangaphakathi.

Iimpawu zeVolt-ampere zesekethe ye-AC yecoil yentsimbi

Ukulahlekelwa ngumthwalo ongekhoyo kwahlulwe kubini: ukulahleka kwamandla asebenzayo kunye nokulahleka kwamandla asebenzayo.I-Transformer kwimeko ye-secondary open-circuit state, i-primary isenayo i-current ethile, kwaye iphinda iphindwe yi-voltage elinganisiweyo yokuqala iya kuba nokusetyenziswa kwamandla athile, oku kubizwa ngokuba akukho mthwalo wangoku.Ukulahlekelwa kwamandla asebenzayo ngokusisiseko kubhekisela ekulahlekeni kwe-hysteresis kunye nokulahleka kwe-eddy yangoku kwi-iron core, echazwe ngokubanzi kwinkcazo yefektri okanye ingxelo yokuvavanya ye-transformer.Inxalenye yokulahlekelwa kwamandla asebenzayo yilahleko ebangelwa yi-excitation current, ephantse ilingane namandla okungabikho komthwalo we-transformer kwaye ingabalwa ngefomula elandelayo ngokuhambelana nomthwalo wangoku.

Q₀=I₀ (%）/100Se

I-Q₀kwifomula ibhekisa kwilahleko yamandla asebenzayo kwilahleko engekho-mthwalo, kwiiyunithi ze-kvar.

I-I₀ (%) ibhekiselele kwipesenti ye-transformer akukho-load yangoku ukuya kwi-rated current.

S₀ukulinganisa kubhekiselele kumthamo olinganisiweyo we-transformer kwi-KVA.

Umgaqo wokusebenza we-single-phase transformer

Inxalenye esebenzayo yilahleko ebangelwa ukuchaswa kwe-primary winding kunye ne-second winding ye-transformer xa idlula ngoku, ehambelana nesikwere sangoku, ngoko ubungakanani bayo buxhomekeke kumthwalo kunye namandla ombane we-transformer.Inxalenye yelahleko yamandla esebenzayo ikakhulu yilahleko ebangelwa kukuvuza okuvuzayo, okunokubalwa ngale fomula ilandelayo.

Qd=Ud (%)/100Se

I-Qd kwifomula ibhekiselele kwilahleko yamandla asebenzayo kwilahleko ye-transformer emfutshane-yesekethe, kwiiyunithi ze-kvar.

I-Ud yipesenti yombane wesiphaluka esifutshane ukuya kumbane olinganisiweyo;

I-Se ibhekisa kumthamo olinganisiweyo we-transformer kwi-kvA.