Txhua yam khoom siv hluav taws xob yuav raug kev puas tsuaj thaum lub sijhawm ua haujlwm ntev, thiabfais fab mov transformerstsis muaj kev zam. Nyob rau hauv qhov poob ntawm lub hwj chim transformers, nws yog tsuas yog muab faib ua ob ntu: tooj liab poob thiab hlau poob.
Tooj Loss
tooj liab plays lub luag haujlwm tseem ceeb hauv transformer, winding ntawm transformer feem ntau siv tooj liab xov hlau, thiab "tooj liab poob" nyob rau hauv lub transformer yog poob ntawm tooj liab nyob ntawm tej. Qhov "tooj liab poob" ntawm lub transformer tseem hu ua lub load poob, uas yog, qhov sib txawv ntawm qhov poob, uas yog hloov. Thaum lub transformer tab tom khiav hauv load, tam sim no yuav muaj kev tiv thaiv los ntawm cov hlau, uas ua rau tsis kam poob. Raws li Joule txoj cai, qhov tam sim no ntws los ntawm qhov resistor yuav ua rau Joule kub, thiab qhov tam sim no ntau dua, lub zog poob ntau dua. Yog li, qhov tsis kam tiv thaiv yog proportional rau square ntawm tam sim no thiab yog ywj siab ntawm qhov voltage. Nws yog qhov tseeb vim tias nws hloov pauv nrog qhov loj ntawm qhov tam sim no, yog li cov tooj liab poob (load poob) yog qhov tsis sib xws, nws kuj yog qhov poob tseem ceeb hauv kev ua haujlwm transformer.
Influencing Factor
Tam sim no loj:Raws li tau hais los saum no, tooj liab poob yog proportional rau lub square ntawm tam sim no, yog li qhov loj ntawm qhov tam sim no yog qhov tseem ceeb cuam tshuam rau tooj liab poob.
Winding kuj:Qhov tsis kam ntawm winding ncaj qha cuam tshuam rau tooj liab poob. Qhov kev tiv thaiv ntau dua, qhov ntau dua qhov tooj liab poob.
Tus naj npawb ntawm cov txheej coil: Qhov ntau ntawm cov coil txheej, qhov ntev ntawm txoj kev ntawm cov dej ntws hauv winding, qhov kev tiv thaiv yuav nce ntxiv, uas ua rau cov tooj liab poob ntau ntxiv.
Hloov zaus:Cov nyhuv ntawm kev hloov zaus ntawm cov tooj liab poob ntawm lub transformer yog ncaj qha cuam tshuam rau kev faib tsis tau ntawm lub transformer thiab cov yam ntxwv load. Thaum cov yam ntxwv ntawm kev thauj khoom thiab kev faib khoom tsis yog inductive, cov tooj liab poob qis nrog qhov nce ntawm kev hloov zaus. Cov tooj liab poob nce nrog qhov nce ntawm kev hloov zaus thaum lawv ob qho tib si capacitive.
Cov nyhuv kub: Lub load poob kuj cuam tshuam los ntawm qhov kub ntawm lub transformer, thaum lub xau flux tshwm sim los ntawm lub load tam sim no yuav ua rau eddy tam sim no poob nyob rau hauv lub winding thiab stray poob nyob rau hauv cov hlau seem sab nraum lub winding.
Hom tshuaj hom
1. tooj liab poob (unit: kW)=I² × Rc × Δt, Kuv yog qhov ntsuas tam sim no ntawm lub transformer, Rc yog qhov tsis kam ntawm cov hlau hlau, thiab Δt yog lub sijhawm ua haujlwm ntawm lub tshuab hloov pauv.
2. tooj liab poob=I² × R, Kuv yog qhov ntsuas tam sim no ntawm transformer, R yog tag nrho tooj liab tsis kam ntawm lub transformer.
R=(R1 + R2) / 2, R1 yog thawj sab tooj liab tsis kam ntawm lub transformer, thiab R2 yog qhov thib ob sab tooj liab tsis kam ntawm lub transformer.
Txoj kev txo cov tooj liab puas
1. Ua kom lub winding cross-sectional cheeb tsam ntawm lub transformer: txo tus neeg xyuas pib tsis kam, yog li no zoo txo cov transformer tooj liab poob.
2.Siv cov khoom siv hluav taws xob zoo xws li tooj liab ntawv lossis aluminium ntawv ci kom txo tau qhov cua tsis kam.
3.Txo lub teeb-load lub sij hawm ntawm lub transformer: txwv qhov kev faib ua feem ntawm lub teeb-load lub sij hawm ntawm lub transformer yog conducive mus txo cov tooj liab poob ntawm lub transformer.
