Olee otú iji belata ọnwụ nke inductor isi | DỊKWA MMA

Anyị maara na inductance core bụ ngwaahịa a ga-eji n'ọtụtụ ngwaahịa eletrọnịkị, ngwaahịa eletrọnịkị ga-emepụta ụfọdụ mfu na usoro ojiji, na isi inductance abụghị ihe ọzọ. Ọ bụrụ na ọnwụ nke inductor core buru ibu, ọ ga-emetụta ndụ ọrụ nke inductor core.

Ihe e ji mara nke inductor isi ọnwụ (karịsịa gụnyere hysteresis ọnwụ na eddy ugbu a ọnwụ) bụ otu n'ime ihe ndị kasị mkpa na-egosi ike ihe, nke na-emetụta na ọbụna na-ekpebi na-arụ ọrụ arụmọrụ, okpomọkụ ịrị elu na ntụkwasị obi nke dum igwe.

Inductor isi ọnwụ

1. Hysteresis ọnwụ

Mgbe ihe bụ isi bụ magnetized, e nwere akụkụ abụọ nke ike ezigara na magnetik, otu n'ime ha na-agbanwe n'ime ike nwere ike, ya bụ, mgbe a na-ewepụ ihe ndọta nke dị n'èzí, ike magnetik nwere ike ịlaghachi na sekit. , ebe akụkụ nke ọzọ na-eri site na imeri esemokwu, nke a na-akpọ ọnwụ hysteresis.

Ebe akụkụ nke onyinyo nke magnetization curve na-anọchi anya mfu ike nke hysteresis kpatara na usoro magnetization nke isi magnetik na okirikiri ọrụ. Ihe ndị na-emetụta mpaghara ọnwụ ahụ bụ njupụta magnetik na-arụ ọrụ kachasị B, ike ndọta kachasị elu H, remanence Br na ike mmanye Hc, nke njupụta magnetik na ike ndọta na-adabere na ọnọdụ ikuku eletrik dị n'èzí na core size parameters, ebe Br na Hc dabere na ihe onwunwe. Maka oge ọ bụla nke magnetization nke isi ihe inductor, ọ dị mkpa ka ịlanarị ike dị na mpaghara nke hysteresis loop gbara ya gburugburu. nke ukwuu ugboro bụ, ukwuu ọnwụ ike na-, na ibu magnetik induction swing bụ ibu, ebe mkpuchi bụ ibu, ukwuu hysteresis ọnwụ bụ.

2. Eddy ugbu a ọnwụ

Mgbe agbakwunyere voltaji AC na eriri igwe magnetik, ihe na-akpali akpali ugbu a na-esi na eriri igwe na-aga, na mmiri magnetik niile nke ntụgharị ampere na-akpali akpali na-agafe na-agafe na isi magnet. Igwe ndọta n'onwe ya bụ onye na-eduzi ya, yana njikọ ndọta niile dị n'akụkụ obe nke magnetik core jikọtara ya na-etolite eriri nke abụọ na-atụgharị otu. N'ihi na ihe mgbochi nke magnetik isi ihe na-adịghị agwụ agwụ, e nwere ụfọdụ nguzogide gburugburu isi, na voltaji na-emepụta na-emepụta ugbu a, ya bụ, eddy current, nke na-agafe site na nguzogide a, na-akpata ọnwụ, ya bụ, eddy ugbu a ọnwụ.

3. Mfu nke fọdụrụ

Mfu fọdụrụnụ na-ebute site na mmetụta ntụrụndụ magnetization ma ọ bụ mmetụta hysteresis magnetik. Ihe a na-akpọ ntụrụndụ pụtara na n'ime usoro magnetization ma ọ bụ mgbochi magnetik, ọnọdụ magnetization adịghị agbanwe ozugbo na njedebe ikpeazụ ya na mgbanwe nke ike magnetization, ma na-achọ usoro, na "mmetụta oge" a bụ ihe kpatara ya. mfu nke fọdụrụnụ. Ọ bụ tumadi na elu ugboro 1MHz n'elu ụfọdụ ntụrụndụ ọnwụ na atụ ogho magnetik resonance na na, na ịmafe ike ọkọnọ ọtụtụ narị KHz nke ike eletrọnịkị, nkezi nke mpụta ọnwụ bụ nnọọ ala, nwere ike na-na-na-eleghara anya.

Mgbe ị na-ahọrọ isi ihe ndọta kwesịrị ekwesị, a ga-atụle akụkụ dị iche iche na njirimara ugboro ugboro, n'ihi na ọkpụkpụ ahụ na-ekpebi nnukwu ọnwụ ugboro ugboro, saturation curve na inductance nke inductor. N'ihi na eddy ugbu a n'otu aka na-akpata nkwụsị nkwụsị, na-eme ka ihe magnetik na-ekpo ọkụ, na-eme ka ihe na-akpali akpali na-abawanye, n'aka nke ọzọ na-ebelata ebe ntụgharị magnet dị irè nke isi magnet. Ya mere, gbalịa ịhọrọ ihe ndọta nwere nnukwu resistivity ma ọ bụ n'ụdị nke a na-akpọgharị akpọrepu iji belata mfu eddy ugbu a. Ya mere, ihe ọhụrụ platinum NPH-L kwesịrị ekwesị maka obere ihe mkpuchi ntụ ntụ nke dị elu nke ugboro ugboro na ngwaọrụ ike dị elu.

Isi ọnwụ na-akpata site n'ọdịdị ndọta na-agbanwe agbanwe na isi ihe. Ọnwụ nke ụfọdụ ihe kpatara bụ ọrụ nke ugboro ole a na-arụ ọrụ na ngụkọta mmụgharị, si otú a na-ebelata mfu conduction dị irè. Isi ọnwụ na-akpata bụ hysteresis, eddy current na mfu nke isi ihe. Ya mere, isi ọnwụ bụ nchikota nke hysteresis ọnwụ, eddy ugbu a ọnwụ ọnwụ na remanence ọnwụ. Ọnwụ hysteresis bụ mfu ike nke hysteresis kpatara, nke dabara na mpaghara nke loops hysteresis gbara ya gburugburu. Mgbe oghere ndọta na-agafe na isi na-agbanwe, eddy current na-apụta na isi, na ọnwụ nke eddy current kpatara na-akpọ eddy current ọnwụ. Mfu fọdụrụnụ bụ mfu niile ma e wezụga mfu hysteresis na mfu dị ugbu a.