Sarudza iyo inductor yakakodzera yekuchinja magetsi | GETWELL

An inductor , inozivikanwawo seyakachidzwa, inoratidzirwa ne "inertia huru" yezvino inoyerera kuburikidza nayo. Mune mamwe mazwi, nekuda kwekuenderera kweiyo flux, ikozvino pane inductor inofanirwa kuenderera, kana zvisina kudaro inoburitsa yakakura voltage spike. Iyo inductor inhengo yemagineti, saka ine musikirwo ine dambudziko remagineti saturation. Mamwe maapplication anobvumira inductance saturation, mamwe maapplication anobvumira inductors kuti apinde mukuzara kubva kune imwe yazvino kukosha, uye mamwe maapplication haatenderi inductors kuzara, izvo zvinoda mutsauko mumasekete chaiwo.

Muzviitiko zvakawanda, inductor inoshanda mu "linear region", uko inductance inogara uye haishanduki nemagetsi ekupedzisira uye ikozvino. Zvisinei, pane dambudziko risingagoni kuregererwa, kureva kuti, kupeta kweinductor kunotungamira kune maviri akagoverwa parameters (kana parasitic parameters), imwe ndiyo isingadzivisiki inopikisa mhepo inopikisa, imwe yacho inoparadzirwa yakarasika capacitance ine chokuita nemhepo. nzira uye zvinhu.

Stray capacitance haina mhedzisiro pane yakaderera frequency, asi inoratidzika zvishoma nezvishoma nekuwedzera kwefrequency. Kana iyo frequency iri pamusoro pehumwe kukosha, iyo inductor inogona kuve capacitive hunhu. Kana iyo yakarasika capacitance "yakadzika" mune capacitor, iyo capacitance maitiro mushure meimwe frequency inogona kuoneka kubva kune yakaenzana dunhu reinductor.

Mamiriro ekushanda einductor munharaunda

Kungofanana neiyo capacitor ine yekuchaja uye yekuburitsa ikozvino, iyo inductor inewo yekuchaja uye yekuburitsa voltage process. Mhepo iri pa capacitor yakaenzana nekubatanidzwa kwezvino, uye ikozvino pane inductor inofananidzwa nekubatanidzwa kwemagetsi. Chero bedzi iyo inductor voltage ichichinja, ikozvino shanduko yedhi / dt ichachinja zvakare; iyo voltage yekumberi inoita kuti kusimuka kwazvino kusimuke, uye reverse voltage inoita yazvino kuderera zvine mutsetse.

Izvo zvakakosha kuti uverenge iyo chaiyo inductance kusarudza yakakodzera inductor uye inobuda capacitor kuti uwane iyo shoma inobuda voltage ripple.

Inductance sarudzo yekutsika-pasi switching Power supply

Paunenge uchisarudza inductors ye buck switching magetsi, zvinodikanwa kuti uone iyo yakanyanya kupinza voltage, inobuda voltage, simba switching frequency, yakanyanya ripple ikozvino uye yebasa kutenderera.

Inductance sarudzo yekusimudzira switching Simba rekupa

Kune inductance calculation ye boost switching power supply, kunze kwekunge hukama pakati peduty cycle uye inductance voltage yachinja, imwe maitiro akafanana neaya ekutsika-pasi switching power supply.

Ndokumbira utarise kuti kusiyana neiyo buck simba rekupa, iyo yekuremedza ikozvino yekuwedzera simba rekupa haisi nguva dzose inopihwa neiyo inductor ikozvino. Kana iyo switch chubhu iripo, iyo inductor ikozvino inoyerera ichipinda muvhu kuburikidza neiyo switch chubhu, uye inotakura ikozvino inopihwa neinobuda capacitor, saka iyo inobuda capacitor inofanirwa kunge iine yakakura yakakwana yekuchengetera simba rekupa iyo ikozvino inodiwa nemutoro. panguva iyi. Zvisinei, panguva yekudzima kwekushandura, ikozvino inoyerera kuburikidza ne-inductor haingopi chete mutoro, asiwo inobhadhara iyo inobuda capacitor.

Kazhinji, kana kukosha kweiyo inductance kukava hombe, iyo inobuda ripple inova diki, asi mhinduro ine simba yemagetsi inozowedzera, saka kusarudzwa kweiyo inductance kukosha kunogona kugadziridzwa zvichienderana nechaicho chinodikanwa chekushandisa chedunhu kuti uwane. the best effect.

Kuwedzera kwekuchinja frequency kunogona kuita kuti inductance ive diki, kuitira kuti saizi yemuviri yeinductor ive diki uye chengetedza redunhu bhodhi nzvimbo, saka ikozvino shanduko yemagetsi magetsi ine maitiro kune yakakwira frequency, kuitira kuti isangane nezvinodiwa zvediki uye diki. huwandu hwezvigadzirwa zvemagetsi.

Izvo zviri pamusoro apa ndeyekutanga kwekusarudza iyo yakakodzera inductor yekuchinja magetsi. kana iwe uchida kuziva zvakawanda nezve inductor, ndapota inzwa wakasununguka kutibata nesu.