Kuongororwa kweinductor current| GETWELL

Dhizaini inductor inounza matambudziko mazhinji kune mainjiniya mukugadzirisa kwekuchinja magetsi. Mainjiniya havafanirwe kungosarudza kukosha kweiyo inductance, asi zvakare funga nezve yazvino iyo inductor inogona kutakura, mhepo inopikisa, saizi yemuchina uye zvichingodaro. Iyo DC ikozvino mhedzisiro pane inductor, iyo ichapawo ruzivo rwakakosha pakusarudza yakakodzera inductor.

Nzwisisa basa reinductor

Iyo inductor inowanzo nzwisiswa seL iri muLC sefa redunhu mukubuda kweiyo switching magetsi emagetsi (C ndiyo inobuda capacitor). Kunyangwe kunzwisiswa uku kuri kwechokwadi, zvinodikanwa kuve nekunzwisisa kwakadzama kwehunhu hwema inductors kuti unzwisise dhizaini yemainductors.

Mune nhanho-pasi shanduko, imwe magumo einductor yakabatana neiyo DC inobuda voltage. Imwe magumo yakabatana neiyo yekuisa voltage kana GND kuburikidza nekuchinja frequency switch.

Iyo inductor yakabatana kune yekupinda voltage kuburikidza neMOSFET, uye inductor yakabatana neGND. Nekuda kwekushandiswa kwerudzi urwu rwemutongi, inductor inogona kudzika munzira mbiri: ne diode grounding kana neMOSFET grounding. Kana iri nzira yekupedzisira, inoshandura inonzi "synchronus" mode.

Zvino funga zvakare kana ikozvino inoyerera kuburikidza neinductor mune idzi mbiri nyika ichichinja. Imwe magumo einductor yakabatana kune yekupinda voltage uye imwe magumo yakabatana kune inobuda voltage. Kune nhanho-pasi inoshandura, iyo yekupinda voltage inofanirwa kunge yakakwira kupfuura inobuda voltage, saka yakanaka voltage inodonha ichaumbwa pane inductor. Kusiyana neizvi, panguva yenyika yechipiri, imwe magumo einductor pakutanga akabatana neiyo voltage yekupinza yakabatana pasi. Kune nhanho-pasi inoshandura, iyo inobuda voltage inofanirwa kuve yakanaka, saka yakashata voltage donho ichaumbwa pane inductor.

Naizvozvo, kana iyo voltage pane inductor yakanaka, ikozvino pane inductor ichawedzera; kana iyo voltage pane inductor isina kunaka, ikozvino pane inductor ichaderera.

Iyo pa-voltage kudonha kweinductor kana kudonha kwemagetsi kumberi kweSchottky diode muasynchronous circuit inogona kufuratirwa kana ichienzaniswa neinopinza uye inobuda voltage.

Saturation ye inductor core

Kuburikidza nepamusoro penguva yeinductor yakaverengerwa, tinogona kuziva izvo zvinogadzirwa pane inductor. Zviri nyore kuziva kuti sezvo ikozvino kuburikidza ne inductor inowedzera, inductance yayo inoderera. Izvi zvinotemerwa nehunhu hwemagineti core material. Yakawanda sei inductance ichaderedzwa yakakosha: kana iyo inductance yakaderedzwa zvakanyanya, shanduko haizoshande zvakanaka. Kana iyo ikozvino inopfuura nepainductor yakakura zvekuti inductor inoshanda, ikozvino inonzi "saturation current". Iyi zvakare ndiyo yekutanga parameter ye inductor.

Muchokwadi, iyo switching simba inductor mushanduko wedunhu inogara ine "nyoro" saturation. Kana iyo yazvino ichiwedzera kune imwe nhanho, iyo inductance haizodzike zvakanyanya, iyo inonzi "nyoro" saturation hunhu. Kana ikozvino inowedzera zvakare, inductor ichakuvadzwa. Kuderera kweiyo inductance kuripo mumhando dzakawanda dzema inductors.

Iine iyi yakapfava saturation chimiro, tinogona kuziva kuti nei iyo shoma inductance pasi peDC inobuda ikozvino inotsanangurwa mune ese anoshandura, uye shanduko yeripple ikozvino haizokanganisa zvakanyanya inductance. Mune ese maapplication, ripple yazvino inotarisirwa kuve diki sezvinobvira, nekuti ichakanganisa ripple yeinobuda voltage. Ichi ndicho chikonzero vanhu vanogara vachinetseka nezve inductance pasi pekubuda kweiyo DC uye vasingatarise iyo inductance pasi peiyo ripple ikozvino muSpec.

Izvo zviri pamusoro ndiko kusuma inductor ikozvino kuongorora, kana iwe uchida kuziva zvakawanda nezve inductors, ndapota inzwa wakasununguka kutibata nesu.