Tsim kev txiav txim siab rau hom hom inductance ntawm kev hloov fais fab transformer
Nyob rau hauv tus txheej txheem tsim ntawm lub hwj chim transformers, engineers yuav tsum nruj me ntsis xam thiab ua kom tiav cov hom inductance tsim thiab cov zauv xaiv, uas ncaj qha cuam tshuam rau kev ua hauj lwm raug ntawm switching zog transformers. Nyob rau hauv hnub no tsab xov xwm, peb yuav ua ib tug luv luv kev soj ntsuam ntawm lub hom inductance tsim ntawm switching zog transformers, thiab saib dab tsi teeb meem yuav tsum tau them sai sai mus rau hauv lub tsim thiab xam txheej txheem ntawm hom hom inductance ntawm lub hwj chim transformers. Hauv kev tsim thiab tsim cov txheej txheem ntawm lub hwj chim transformers, engineers yuav tsum tsim cov hom inductors, uas feem ntau yuav tsum muaj peb yam tseem ceeb: cov tswv yim tam sim no, impedance thiab zaus, thiab xaiv cov tub ntxhais sib nqus. Cia peb saib ntawm cov tswv yim tam sim no ua ntej. Tus nqi parameter no ncaj qha txiav txim siab qhov yuav tsum tau xaim txoj kab uas hla rau winding. Thaum xam thiab xaiv txoj kab uas hla, qhov ceev tam sim no feem ntau yog siv li 400A / cm ³, Tab sis tus nqi no yuav tsum sib txawv nrog qhov kub ntawm qhov inductance.
Feem ntau, cov winding ua haujlwm nrog ib lub xaim, uas tuaj yeem txo cov suab nrov nrov thiab cov tawv nqaij poob. Nyob rau hauv cov txheej txheem kev suav, qhov impedance ntawm hom inductance ntawm kev hloov hluav taws xob hloov pauv feem ntau tau teev tseg raws li tus nqi me me ntawm cov zaus muab. Lub linear impedance nyob rau hauv series tuaj yeem muab qhov feem ntau xav tau suab nrov attenuation. Txawm li cas los xij, qhov tseeb, qhov teeb meem ntawm linear impedance feem ntau tsis saib xyuas, yog li cov neeg tsim qauv feem ntau siv 50W linear impedance ruaj khov network ntsuas los ntsuas cov hom inductors, thiab maj mam dhau los ua tus qauv qauv rau kev ntsuas kev ua haujlwm ntawm hom inductors. Tab sis cov txiaj ntsig tau txais feem ntau txawv ntawm qhov xwm txheej tiag tiag. Qhov tseeb, hom hom inductance yuav xub tsim ib zaus ntawm -6dB attenuation ib octave nce nyob rau hauv angular zaus thaum lub sij hawm ua hauj lwm (angular zaus yog -3dB ua los ntawm hom hom inductance). Qhov no angular zaus feem ntau yog tsawg heev, kom cov inductance tuaj yeem muab impedance.
Yog li, inductance tuaj yeem qhia tau siv cov qauv no, piv txwv li Ls=Xx/2 π f. Muaj lwm qhov teeb meem uas cov engineers yuav tsum tau them sai sai rau ntawm no, uas yog yuav tsum tau them sai sai rau cov khoom siv ntawm cov hlau nplaum thiab qhov yuav tsum tau muaj qhov hloov pauv thaum tsim ib hom inductor. Ua ntej, cia peb saib cov kev xaiv ntawm cov qauv sib nqus core. Yog tias muaj qhov chaw inductance tshwj xeeb nyob rau lub sijhawm no, peb yuav xaiv cov qauv sib nqus hlau tsim nyog raws li qhov chaw no. Yog tias tsis muaj kev cai, kev xaiv ntawm cov qauv hlau nplaum feem ntau yog arbitrary.
Tom qab txiav txim siab tus qauv sib nqus ntawm lub zog hloov pauv, txoj haujlwm tom ntej yog suav cov lej loj uas cov tub ntxhais sib nqus tuaj yeem cua. Feem ntau hais lus, ib hom hom inductor muaj ob lub windings, feem ntau yog ib txheej, thiab txhua qhov winding raug faib rau txhua sab ntawm cov tub ntxhais sib nqus, nrog rau qee qhov kev ncua deb ntawm ob lub windings. Ob txheej txheej thiab stacked windings kuj tau siv qee zaus, tab sis txoj hauv kev no tuaj yeem txhim kho qhov kev faib tawm ntawm cov winding thiab txo qhov kev ua haujlwm siab ntawm inductance. Vim qhov tseeb tias txoj kab uas hla ntawm cov hlau tooj liab yog txiav txim siab los ntawm qhov loj ntawm cov kab hluav taws xob tam sim no, lub voj voog sab hauv tuaj yeem suav tau los ntawm kev rho tawm lub vojvoog ntawm cov hlau tooj liab los ntawm lub vojvoog sab hauv ntawm cov hlau nplaum. Yog li ntawd, rau cov coils loj, txoj kab uas hla ntawm tooj liab hlau nrog rwb thaiv tsev thiab qhov ncig ntawm txhua qhov winding tuaj yeem xam.
