Iphepha lokuchaza imodeli kunye nohlalutyo lweempawu zee-transformers

5.1 Umgaqo osisiseko wokusebenza kunye nesakhiwo se-transformer

5.1.1 Umgaqo osisiseko wokusebenza we-transformer

Isiguquli sinesiphumo sokuvalwa kwe-DC

Ukuba imagnethi engundoqo iyatshintsha ngokomthetho wesine, oko kukuthi, φ(t)=φ.sinot, ngoko ke umzimba ngamnye

Ixabiso elisebenzayo lomyinge lanelisa ubudlelwane obulandelayo:

Ukungahoyi ukuxhathisa okujikelezayo kunye nelahleko engundoqo, amagunya aphambili kunye nesibini ayagcinwa, ngolu hlobo lulandelayo:

kuba njalo

Umlinganiselo wokujika okanye ujiko lomlinganiselo we-transformer,

Yitsho amandla abonakalayo.

Ingabonwa ukuba i-transformer iqonda uguqulo lwangoku ngelixa iqonda uguquko lombane. kwakhona,

I-transformer inokuqonda umsebenzi wokuguqulwa kwe-impedance.

Uthintelo lomthwalo kwicala lesibini yile:

Ukuba ujonga i-ZI kwicala eliphambili, ubukhulu bayo bu:

Ubume bomguquli wesigaba esinye

1- Ikholamu engundoqo 2- Idyokhwe yentsimbi 3- - Ukujika kombane ophezulu 4- ~ Ukujika kombane ophantsi

Ubume be-transformer yesigaba sesithathu

Iimpompo ze-winding voltage ephezulu ye-transformer yesigaba sesithathu

1-Intsimbi engundoqo ikholamu 2-Idyokhwe yentsimbi

I-3- i-low voltage winding 4- - i-high voltage winding

1- I-Nameplate 2- I-Thermometer 3-Isixhobo sokufunxa ukufuma 4- Igeyiji yomgangatho we-oyile 5- Isigcini se-oyile 6-Indlela yokhuseleko yomoya 7- Ukuhanjiswa kwerhasi 8-Umbhobho we-oyile woxinzelelo oluphezulu

9 umbhobho we-oyile woxinzelelo oluphantsi 10 - itephu yokutshintsha 11 - itanki yamafutha core 12 - ivalve yokukhupha ioyile 13 - icoil 14 - ipleyiti yomhlaba 15 - - itrolley

5.2 Iireyithingi zeTransformer

➢ Ubungakanani bomthamo okanye amandla abonakalayo Sn;

➢Umbane olinganisiweyo we-Un

Ilinganiswe ngoku iv;

➢Ireyithwe rhoqo fn;

➢Ukufaneleka okuthelekelelweyo ηn ;

Zombini i-voltage elinganisiweyo kunye nereyithingi yangoku ibhekisa kwixabiso lomgca (okt i-voltage yomgca okanye yangoku yomgca)

Ubudlelwane bulandelayo bukhona phakathi kwedatha ekalisiweyo:

Kwifomula, m imele inani lezigaba ze-transformer;

I-U1Nφ kunye ne-I1Nφ imele amaxabiso esigaba se-voltage elinganisiweyo kunye ne-rerated current, ngokulandelanayo.

Olweziguquli zenqanaba elinye:

Kwizigaba ezithathu zesiguquli:

5.3 Uhlalutyo lokungathwali mthwalo kwee-transformers

inkcazelo:

I-no-load of transformer ibhekisela kwimeko yokusebenza apho i-primary winding isetyenziswe nge-AC voltage kunye ne-second winding ivulekile, oko kukuthi, icala lesibini livulekile (oko kukuthi, okwangoku ngu-zero).

5.3.1 Ubudlelwane be-electromagnetic yee-transformer ngexesha lokusebenza ngaphandle komthwalo

Ibhalwe ngohlobo lwe-phasor ngolu hlobo:

Ukuququmbela:

Ubungakanani bezinto ezinokubakho kwi-winging zihambelana nokuphindaphinda, inani lokujika okujikelezayo kunye ne-amplitude ye-magnetic flux; kwisigaba, amandla anyanzeliswayo kwi-transformer winding lags emva kwe-main flux magnetic.

Xa i-voltage elinganisiweyo isetyenziswe kwi-winging ephambili, i-voltage evulekileyo yesekethe yomoya wesibini ichazwe njengombane olinganisiweyo wecala lesibini, oko kukuthi, ngale ndlela, umlinganiselo wenguqu we-transformer unokufumaneka ngolu hlobo:

5.3.2 Ukulingana kweeparamitha zombane zesekethe yemagnethi

Umbono osisiseko:

Ingxaki yesekethe yamagnetic ebandakanyekayo kwi-transformer iguqulwa ibe yingxaki yesiphaluka, kwaye ke i-transformer ibalwa ngokwe-theory yesekethe edibeneyo.

Ukuvuza kokuvuza:

Emva koko X1δ okanye i-L1δ, ingasetyenziselwa ukubonisa ukuvuza kwesekethe yemagnethi. (njengesiqhelo, ngoba?)

Ngotshintsho oluphambili:

Okokuqala, ingqikelelo ye-sine elinganayo yangoku iyaziswa, kwaye i-non-sinusoidal no-load yangoku ithathelwa indawo yi-sine wave yangoku.

(a) Phasor diagram              (b) Isekethe elinganayo           (c) Isekethe elinganayo

kwi-transformer efanelekileyo:

5.3.3 I-equation ye-voltage balance equation, i-phasor diagram kunye ne-equivalent circuit diagram ye-transformer

Ukuququmbela:

Umbane wecala eliphambili liphantsi xa i-transformer isebenza ngaphandle komthwalo. ke ngoko,

Iziguquli ngokubanzi azivumeli ukuba akukho mthwalo okanye umsebenzi wokulayisha ukukhanya.

5.4 Uhlalutyo lokusebenza komthwalo we-transformer

Emva kokuba i-transformer ilayishiwe, okwangoku kwicala lesibini alisekho i-zero, okubangela utshintsho kwinkqubo ye-electromagnetic ngaphakathi kwengundoqo.

5.4.1 I-balance equation yesakhono samagnetic xa i-transformer iphantsi komthwalo

5.4.1 I-balance equation yesakhono samagnetic xa i-transformer iphantsi komthwalo

Akukho-mthwalo/umthwalo

Le fomyula ingasentla inokuqondwa njenge: Njengoko umthwalo wangoku usanda, amandla ombane ahambelanayo (okanye akhoyo) kufuneka anyuswe kwicala eliphambili ukuze kuncitshiswe amandla emagnethi kwicala lesibini, ukuze kugcinwe ukuqukuqela kwemagnethi okanye amandla emagnethi angatshintshwanga. -umthwalo. Ngoko kukho:

Ukuququmbela:

Emva kokuba i-transformer ilayishiwe, i-primary side current iyanda. Umthwalo omkhulu (okwangoku) ofunekayo kwicala lesibini, inkulu ikhoyo ngoku enikezelwayo kwicala eliphambili. Oko kukuthi, i-transformer inokuthathwa njengebhalansi phakathi kokubonelela kunye nemfuno.

5.4.2 Iiparamitha zombane ezilinganayo zesekethe yokuvuza yesibini emva kokuba i-transformer ilayishiwe.

I-X₂δ okanye i-Ḯ₂ ingasetyenziselwa ukubonisa imeko yecandelo lesibini lokuvuza kwesekethe yemagnethi.

5.4.3 Ubudlelwane bombane xa isiguquli siphantsi komthwalo

5.5 Ii-equations ezisisiseko, iisekethe ezilinganayo kunye nedayagram ye-phasor ye-transformers

5.5.1 I-equation esisiseko ye-transformer ilingana nohlalutyo olwahlukeneyo kunye neeparamitha kwicandelo langaphambili, kunye nesigaba.

IiEquations eziSiseko zeTransformer kwiFomu yoMyinge

5.5.2 Isekethe elinganayo yokusebenza komthwalo we-transformer

Ngokwee-equations ezisisiseko zangaphambili, uhlalutyo oluhlukeneyo kunye nokubalwa kwe-transformer kunokwenziwa, kodwa izibalo zinzima kakhulu. Kwinjineli, ngokuqhelekileyo iguqulwa ibe yisekethe elinganayo ukuze ithathe indawo ye-transformer yangempela.

Amacala aphambili kunye nesibini kwisiphaluka esilinganayo azimele ngombane omnye komnye. Ukuze kube lula ukubala, inani le-winding lijika kwicala lesibini lidla ngokunyuka ukusuka ku-N ukuya ku-1, ukwenzela ukuba ubungakanani bomzimba ngamnye kwicala lesibini liya kutshintsha ngokufanelekileyo. Le nkqubo ikwabizwa ngokuba yinguquko.

Umgaqo woguqulo:

Ngaphambi nasemva koguqulo, ubudlelwane be-electromagnetic kufuneka bugcinwe bungatshintshwanga, oko kukuthi:

(1) Amandla emagnethi ngaphambi nasemva kokuguqulwa kufuneka ahlale engatshintshi;

(2) Amandla ombane kunye nelahleko ngaphambi nangemva kokuguqulwa kufuneka ahlale engatshintshi.

(1) Ukuguqulwa kwamandla ombane (guqula i-E ₁ifana ne-E₂)

(2) Uguqulo lwangoku (ukuqinisekisa ukuba amandla omagnetic ahlala engatshintshi)

(3) Ukuguqulwa kwe-impedance (ukuqinisekisa ukuba ubudlelwane bokudlulisa amandla buhlala bungatshintshi, kubandakanywa namandla asebenzayo kunye asebenzayo)

Amandla asebenzayo    

Amandla asebenzayo

5.5.3 Umzobo we-phasor xa i-transformer iphantsi komthwalo Umzobo we-phasor awubonisi kuphela ubudlelwane be-electromagnetic ye-transformer, kodwa unokubona nge-intuitively ubungakanani kunye nobudlelwane besigaba sobuninzi bomzimba ngamnye kwi-transformer.

Ukucinga ukuba iiparamitha zesekethe ziyaziwa, kwaye ubungakanani kunye nesigaba somthwalo sinikezelwa, umzobo we-phasor unokuzotywa ngokwamanyathelo amaninzi.

Ukuququmbela:

Emva kokuba i-transformer ilayishiwe, i-angle factor factor yecala eliphambili iyancitshiswa, kwaye i-power factor iphuculwe.

5.6 Uvavanyo kunye nomlinganiselo weeparamitha zesekethe ezilinganayo ze-transformer Isekethe elinganayo ingasetyenziselwa ukuhlalutya ukusebenza kwe-transformer. Okokuqala, iiparamitha kwisekethe elinganayo kufuneka zaziwa.

Akukho mthwalo uvavanyo -> umlinganiselo wenguquko k, i-excitation impedance

Uvavanyo lwesekethe emfutshane → i-impedance yesekethe emfutshane

5.7 Ukubalwa kweempawu ezisebenza ngokuzinzile kweziguquli

5.7.1 Iimpawu zangaphandle kunye nesantya sokutshintsha kombane wee-transformers

Inkcazo yeempawu zangaphandle (ebonisa umgangatho wokunikezelwa kwamandla we-transformer kumthwalo)

Igophe lobudlelwane phakathi kombane weterminal wecala lesibini le-transformer kunye nomthwalo wangoku wecala lesibini phantsi kweemeko zombane olinganisiweyo wonikezelo lwamandla kunye nomthwalo othile wamandla.

Iimpawu eziqhelekileyo zangaphandle zabaguquli phantsi kwemithwalo eyahlukeneyo

Inkcazo yesantya soMbane woTshintsho:

Phantsi kwemeko yombane olinganisiweyo wobonelelo lwamandla kunye nomthwalo othile wamandla ombane, ipesenti yokutshintsha kwamandla ombane wecandelo lesibini ukusuka kungabikho mthwalo ukuya kumthwalo olinganisiweyo, oko kukuthi:

∆u

Imiba yangaphakathi: xᶄ, rᶄ → iiparamitha zesakhiwo se-transformer

Imiba yangaphandle: cosφ2, β-→umthwalo othile, ubungakanani bomthwalo

Ingxoxo: Isiguquli sikholisa ukuba rᶄ: ncinane kakhulu kune xᶄ nceda ujonge kuMzekelo (5-1)

◆Ngomthwalo osulungekileyo ochasayo, cosφ2=1, sinφ2=0, ngoko ke ∆u incinci;

◆Ngemithwalo yokufundisa,

 cosφ2>0, isonoφ2>0, ngoko ∆u>0,

oko kukuthi, ngokunyuka komthwalo wangoku, i-voltage kwicala lesibini iyancipha kakhulu;

◆Ngomthwalo we-capacitive, cosφ2>0, isonoφ2<0, ukuba |rᶄ cosφ2|<| xᶄ sinφ2|,Emva koko ∆u<0,

ebonisa ukuba ngokunyuka komthwalo we-I2 wangoku, i-voltage kwicala lesibini ingaba

inokunyuka.

Ukusetyenziswa komthwalo we-capacitive kwi-voltage yesibini ye-terminal ye-transformer:

(1) Buyekeza amandla asebenzayo, ukuphucula amandla ombane, kunye nokunciphisa ilahleko yomgca

(2) Ukwandisa amandla ombane ombane wegridi yomzi-mveliso ukusombulula ingxaki yomthwalo onzima wefektri kunye nokuhla kombane wegridi yamandla

5.7.2 Iimpawu zempumelelo yee-transformer.

Ukusebenza kwe-transformer kuchazwa ngolu hlobo:

Imiba enempembelelo ka-η

Imiba yangaphakathi: iiparameters zesakhiwo se-transformer ezifana ne-excitation kunye ne-short-circuit parameters

Imiba yangaphandle: cosφ2, β indalo yomthwalo, ubungakanani bomthwalo

Uphawu olusebenzayo luchazwa ngolu hlobo:

Ngaphantsi kwemeko yombane olinganisiweyo kunye nomthwalo othile wamandla,

η= f(I2)

(okanye = f(β) ).

Ukusebenza okulinganiselweyo kwe-transformer ngokuqhelekileyo kuphezulu

Uninzi lwazo lungaphezulu kwe-95%, kwaye i-transformers enkulu inokufikelela kwi-99%. Injini ye-AC inenxalenye ejikelezayo, ukusebenza kakuhle kuphantsi.

Sombulula ubuninzi bokusebenza kwe-transformer:

5.8 Iingxaki eziZodwa zeZiguquli zeZigaba eziThathu

Izahluko zangaphambili zithatha i-transformer yesigaba esisodwa njengomzekelo wokufunda ii-equations ezisisiseko, iisekethe ezilinganayo kunye neendlela zokubala zokusebenza kwe-transformer, ezisebenza nakwii-transformers zesigaba sesithathu.

Iziguquli zamanqanaba amathathu nazo zineengxaki zazo ezikhethekileyo:

➢Indlela yoqhagamshelo

➢ Ubume besekethe yemagnethi

5.8.1 Indlela yokudibanisa kunye neqela lokudibanisa i-transformer yesigaba sesithathu

(1) Indlela yokudibanisa

(a) star uxhumano                           (b) uqhagamshelo lwe-delta

Ummiselo:

Oonobumba abakhulu (A, B, C, N) bamele isikwere sokuqala;

oonobumba abancinane (x, y, z,n) egameni leqela elihlawulayo;

(2) Ukudibanisa amaqela

Kwiziguquli zesigaba esithathu, amaqela adla ngokusetyenziselwa ukumela umahluko wesigaba phakathi kombane oyintloko kunye nowesibini we-transformer yesigaba sesithathu: θ=(EABEab), ephindaphindwe ka-30 °, ngokuchanekileyo phakathi kweeyure ebusweni bewashi. Ngoko ke, ubudlelwane besigaba phakathi kwamandla aphezulu kunye aphantsi ombane ojikelezayo wocingo lwesigaba sesithathu soguqulo lubonakaliswa ngokubanzi "ngophawu lwewotshi", oko kukuthi, inani leqela.

Indlela yokumisela iqela:

Sebenzisa umgca wecala eliphezulu onokuthi ube yi-EAB njengesandla eside, ukhomba "12" umgca wecala eliphantsi elinokubakho kubuso bewotshi.

I-Eab iyinaliti emfutshane, kwaye inombolo ekhomba kuyo yinombolo yeqela lokudibanisa le-transformer yesigaba sesithathu.

A. Iqela loQhagamshelwano le-single-phase transformer

Ingqikelelo yegama elifanayo:

Xa umbindi wentsimbi ungxwelerhwe ngeekhoyili ezimbini, ukuze kubonakale iikhoyili ezimbini kumbindi wentsimbi

Ubudlelwane bomkhombandlela ojikajikayo phakathi kweekhoyili budla ngokuzisa ingcamango "yesiphelo segama elifanayo".

Icala elifanayo legama lithi:

Iikhoyili ezimbini kwisiseko esifanayo zidibaniswe yi-flux efanayo yamagnetic. Xa i-magnetic flux itshintshana, ukuba amandla angoko nangoko anyanzelwa sisiphelo esinye sekhoyili silungile xa sithelekiswa nesinye isiphelo sekhoyili enye, ezi terminals zimbini zombini zi-positive Ligama elifanayo lesiphelo, elimelwe ngu " *",

       (a) Ukujija kwicala elinye                          (b) Ukujikela kwelinye icala

Kwi-single-phase transformers, isiphelo sentloko ye-high-voltage winding iphawulwe A kunye nomsila ubhalwe uphawu X; isiphelo sentloko ye-low-voltage ejikajikayo iphawulwe a kwaye isiphelo somsila siphawulwe X.

Ummiselo:

Isalathiso esilungileyo sesakhono sisuka ekupheleni kwentloko ukuya ekupheleni komsila.

Kwi-transformer, isiphelo esinegama elifanayo singasetyenziselwa njengentloko yentloko, okanye isiphelo esinegama elifanayo sinokusetyenziswa njengentloko. Amanani a kunye no-b apha ngezantsi abonisa ubudlelwane besigaba phakathi kwezinto eziphambili kunye nezisesekondari kule meko mibini, ngokulandelanayo.

(a) Isiphelo esinegama elifanayo siphawulwe njengesiphelo sentloko                (b) Isiphelo esinegama elifanayo siphawulwe njengesiphelo sentloko

Ukuba indlela yokuchonga apho isiphelo esinegama elifanayo siphawulwe njengesiphelo sentloko samkelwe (jonga uMzobo a), iqela labaguquli besigaba esisodwa I, i0; kuba mna, i6.

B. Iqela loQhagamshelwano le-transformer yesigaba esithathu

Ngokusebenzisa ubudlelwane besigaba phakathi kwezinto eziphambili kunye nesekondari ezinokuthi zenzeke kwi-transformer yesigaba esisodwa (okanye isigaba sokuqala kunye nesesibini esinokuthi siphumelele kwi-transformer yesigaba sesithathu), ubudlelwane besigaba phakathi kwezinto eziphambili kunye nesibini kwi-transformer yesigaba sesithathu sinokuqhubeka ngakumbi. uzimisele, oko kukuthi, iqela loqhagamshelwano.

(1) Uxhulumaniso lwe-Y / Y lwesigaba sesithathu se-transformer

(2) Y/△ uqhagamshelo kwisiguquli sesigaba sesithathu

Amanyathelo ngokubanzi ukumisela iqela le-transformer yesigaba esithathu:

(1) Zoba umzobo onokubakho we-phasor we-high-voltage side winding;

(2) Qokelela inqaku a kunye nenqaku A, kwaye uzobe amandla esigaba se-ax ejikelezayo ephantsi kwe-voltage ngokobudlelwane besigaba phakathi kwamajiko aphezulu kunye ne-low-voltage kwikholamu engundoqo efanayo.

(3) Ngokwendlela ye-wiring ye-low-voltage winding, zoba i-phasor diagram enokubakho yezinye izigaba ezibini ze-low-voltage winding;

(4) Misela i-EB kunye ne-E ukusuka kwidayagram ye-phasor enokubakho ye-winding voltages ephezulu kunye nephantsi. phakathi

Ubudlelwane besigaba se-transformer yesigaba sesithathu sifunyenwe, kwaye inombolo yeqela lokudibanisa ye-transformer yesigaba sesithathu ifunyenwe.

Y/Y,△/△ iqela elilinganayo

Y/△,Y/△ uluhlu olungaqhelekanga

Kukho amaqela amahlanu aqhelekileyo okudibanisa aqhelekileyo:

Y, yn0, Y, d11, YN, d11, YN, y0, Y, y0, ezithathu zokuqala zezona zisetyenziswa kakhulu.

5.8.2 Ubume be-Magnetic circuit circuit ye-three-phase transformer

Iimpawu zeenguqu zeqela lezigaba ezintathu: iisekethe zamagnetic zesigaba ngasinye zizimeleyo.

Iimpawu ze-transformer eziphambili zesigaba sesithathu: iisekethe zamagnetic zesigaba ngasinye zihambelana nomnye.

5.8.3 Ukulungelelaniswa okuchanekileyo koqhagamshelwano olujikelezayo kunye nesakhiwo sesekethe yamagnetic ye-transformer yesigaba sesithathu

I-sine wave yangoku ihambelana nencopho yamaza yangoku

ukuququmbela:

Ukuze kuqinisekiswe ukuba i-waveform enokuthi ibekho yi-sinusoidal, i-flux engundoqo yamagnetic yesigaba ngasinye kufuneka itshintshe ngokomthetho we-sinusoidal. Ngeli xesha, kuyafuneka ukuba i-excitation current ibe yi-peak wave, oko kukuthi, umendo we-harmonic current yesithathu kufuneka uqinisekiswe kunxibelelwano lwesiphaluka. (ngoba? )

I-Flux ye-flat-top wave - (i-derivation) - ikhono le-wave ye-peak wave, ukuba i-peak ikhulu kakhulu, inokuphula i-insulation ye-winding.

Ukuqwalasela ukuba iisekethe zamagnetic zesigaba ngasinye se-transformer yeqela zizimeleyo, azihambelani. Umbane wesithathu we-harmonic wemagnetic flux equlethwe kumbane wemagnethi ophambili uyafana nesiseko soguqulo lwemagnethi, kwaye ujikeleza kwisekethe enkulu yemagnethi yesigaba ngasinye soguqulo, ngaloo ndlela uphembelela i-amplitude ephezulu ye-harmonic enokubakho kwimijiko yokuqala neyesibini, okukhokelela ekubeni Isigaba esinokubakho se-wave wave yi-wave ebukhali (efunyenwe ngokuphuma kwe-flat-topped wave magnetic flux). Incopho yenqanaba le-average yenqanaba elinamandla linokwaphula ugqumethelo olujikozayo.

Ukuqwalasela ukuba imijikelezo yemagnethi yesigaba ngasinye se-transformer engundoqo ihambelana enye kwenye, isigaba sesithathu se-harmonic magnetic flux kwi-high magnetic flux yesigaba sesithathu se-flat wave top siyafana, kwaye akunakwenzeka ukujikeleza ngaphakathi. isekethe yemagnethi yombindi wentsimbi. Ujikelezo lwemagnethi oluvaliweyo lwenziwa, lubangela ukuba amandla esithathu e-harmonic abangelwe yi-harmonic flux yemagnetic kwi-winding ephambili kunye neyesibini ibe ncinci, kwaye inqanaba elinokubakho le-waveform lisekufutshane ne-sine wave.

ukuququmbela:

(1) Ukutshatyalaliswa kwesigaba sesithathu se-transformer yesakhiwo sesigaba sesithathu asikwazi ukuxhunywa nguY / Y; .

(2) Ukutshatyalaliswa kwesigaba sesithathu se-transformer kunye nesakhiwo esisisiseko sesigaba sesithathu sinokudibaniswa neY / Y, kodwa umthamo akufanele ube mkhulu kakhulu.

Elinye icala le-winding lixhunywe kwi-delta, kwaye i-harmonic current yesithathu inomzila. Ngoko ke, kungakhathaliseki ukuba isiphaluka samagnetic luhlobo lweqela okanye isakhiwo sohlobo oluphambili, i-windings yesigaba esithathu inokudityaniswa △/Y.

Elinye icala le-maza edibeneyo yi-Y edibeneyo, kwaye i-harmonic current ye-harmonic ayikwazi ukuhamba kuyo, kodwa i-harmonic magnetic flux eveliswa yi-sine wave yangoku iya kubangela i-harmonic yangoku kwi-winding yesibini (uxhulumaniso lwe-delta) (jonga umfanekiso ngezantsi). ), inokuqinisekisa ukuba i-waveform ye-magnetic flux engundoqo isondele kwi-sinusoidal, ngoko ke i-induced phase enokwenzeka nayo i-sinusoidal. Kungabonwa ukuba umphumo woxhumo lwe-triangular kwicala elifanayo eliphambili lifana.

ukuququmbela:

Kwi-0 / Y (okanye i-Y / 0) edibeneyo i-windings yesigaba sesithathu, ingasetyenziselwa i-transformers yesigaba sesithathu sesakhiwo seqela okanye i-transformers yesigaba sesithathu sesakhiwo seqela.

ukuququmbela:

Ukuze kuqinisekiswe ukuba amandla esigaba sinusoidal, kungcono ukusebenzisa uxhumano lwe-delta kwelinye icala le-transformer yesigaba sesithathu.

5.9 Iziguquli ezikhethekileyo kwiinkqubo zokutsala umbane

5.9.1 Iinguqu ezizenzekelayo

(a) Umzobo wesicwangciso sesakhiwo                           (b) Umzobo wokuvala iintambo

Iimpawu: Kukho ukujija okuqhelekileyo phakathi kwee-windings zecala eliphambili kunye nelesibini, elikhokelela ekudibaneni kwemagnethi kuphela kodwa kunye noqhagamshelwano lombane phakathi kwee-windings zecala eliphambili kunye nelesibini.

Ukuququmbela:

Umthamo we-autotransformer yenziwe ngamacandelo amabini:

(1) Amandla ombane we-U2nIl2: ngamandla agqithiselwa kumthwalo ngokudibanisa i-electromagnetic phakathi kwe-Aa ejikelezayo kunye ne-ax ejikelezayo eqhelekileyo;

(2) Umbane owenziweyo u-U2nI1N: ngamandla ombane athunyelwa ngokuthe ngqo kumthwalo ngezembe elijikajikayo eliqhelekileyo.

➢ Umthamo wombane< umthamo olinganisiweyo

Ubungakanani obuncinci, ukusetyenziswa kwentsimbi ephantsi kunye nobhedu, ukusebenza kakuhle okuphezulu

➢Umlinganiselo omncinci

Inxalenye eqhelekileyo yangoku incinci kunomlinganiselo wecala lesibini

Umsantsa awubonakali, uqoqosho luyancipha

➢Kukho uqhagamshelo oluthe ngqo lombane, ukugqunywa kwangaphakathi kunye nokukhuselwa kwe-overvoltage kufuneka kuqiniswe.

5.9.2 Inguqu

I-voltage transformer - ukulinganisa umbane ophezulu kunye nemitha yombane ophantsi

Ukulumkela:

Esinye isiphelo secala lesibini kufuneka sisekelwe; (ukuqinisekisa ukhuseleko kunye nokuthintela ukuqokelelwa kwentlawulo engatshintshiyo ekuchaphazeleni ukufunda)

Icala lesibini akufanele libe lifutshane, ngaphandle koko i-voltage transformer iya kutshiswa. (Inokonyusa okwangoku ukuba inokwehliswa)

I-Transformer yangoku 1-Linganisa umsinga omkhulu kunye ne-ammeter ephantsi

Ukulumkela:

➢ Esinye isiphelo secala lesibini kufuneka sisekelwe; (ukuqinisekisa ukhuseleko kunye nokuthintela ukuqokelelwa kwentlawulo engatshintshiyo ekuchaphazeleni ukufunda)

➢ Icala lesibini alikwazi ukuvulwa, ngaphandle koko i-voltage spike ephezulu iya kunyanzelwa kwicala lesibini ngenxa yobuninzi bokujika kwicala lesibini, kwaye i-insulation winding ye-transformer iya kuchithwa. (I-voltage inokongezwa ukuba umsinga unokuthotywa)

• Unyakakelwe
  --
• Uhlobo lweshishini
  --
• Ilizwe / Ingingqi
  --
• Ishishini eliphambili
  --
• Iimveliso eziphambili
  --
• Ishishini lomntu osemthethweni
  --
• Abasebenzi bazonke
  --
• Ixabiso lokuphuma lonyaka
  --
• Ukuthengisa ngaphandle
  --
• Abathengi abasebenzayo
  --