Zaɓi inductor mai dacewa don sauya wutar lantarki | ALLAH YA KARA SAUKI

Inductor inductor A wasu kalmomi, saboda ci gaba da juzu'i, na yanzu a kan inductor dole ne ya ci gaba, in ba haka ba zai haifar da babban ƙarfin lantarki. Inductor wani abu ne na maganadisu, don haka a dabi'ance yana da matsalar saturation na maganadisu. Wasu aikace-aikacen suna ba da izinin saturation na inductance, wasu aikace-aikacen suna ba da damar masu gabatarwa su shigar da saturation daga wata ƙima ta yanzu, wasu aikace-aikacen kuma ba sa ƙyale inductor ɗin su cika, wanda ke buƙatar bambanci a cikin takamaiman kewaye.

A mafi yawan lokuta, inductor yana aiki a cikin "yankin layi", inda inductance ya kasance mai tsayi kuma baya canzawa tare da ƙarfin lantarki da na yanzu. Duk da haka, akwai matsalar da ba za a yi watsi da ita ba, wato, iskar inductor zai kai ga nau'i biyu da aka rarraba (ko parasitic sigogi), daya shine juriya na makawa, ɗayan kuma shine rarrabaccen capacitance mai alaka da winding. tsari da kayan aiki.

Ƙaƙƙarfan ƙarfin da ba daidai ba yana da ɗan tasiri a ƙananan mita, amma a hankali yana bayyana tare da karuwar mita. Lokacin da mitar ta kasance sama da takamaiman ƙima, inductor na iya zama sifa mai ƙarfi. Idan capacitance da ya ɓace ya kasance "madaidaicin" a cikin capacitor, ana iya ganin halayen capacitance bayan wani mitar ta daidai da kewaye na inductor.

Yanayin aiki na inductor a cikin kewaye

Kamar yadda capacitor ke da caji da fitarwa, haka nan inductor shima yana da tsarin caji da fitar da wutar lantarki. Wutar lantarki a kan capacitor daidai yake da abin da ke cikin halin yanzu, kuma na yanzu akan inductor yana daidai da haɗin wutar lantarki. Muddin inductor ƙarfin lantarki ya canza, canjin canjin di/dt shima zai canza; wutar lantarki na gaba yana sa hawan na yanzu ya zama layi, kuma ƙarfin wutar lantarki yana sa na yanzu yana raguwa.

Yana da matukar muhimmanci a ƙididdige madaidaicin inductance don zaɓar inductor da capacitor mai dacewa don samun mafi ƙarancin ƙarfin fitarwa.

Zaɓin inductance na sauya wutar lantarki zuwa ƙasa

Lokacin zabar inductor don sauya wutar lantarki, ya zama dole don ƙayyade matsakaicin ƙarfin shigarwa, ƙarfin fitarwa, mitar sauya wutar lantarki, matsakaicin ripple halin yanzu da sake zagayowar aiki.

Zaɓin inductance na haɓakawa sauyawa Wutar lantarki

Don lissafin inductance na haɓaka wutar lantarki, sai dai dangantakar da ke tsakanin zagayowar aiki da ƙarfin wutar lantarki ya canza, ɗayan tsari iri ɗaya ne da na sauya wutar lantarki.

Da fatan za a lura cewa ba kamar wutar lantarki na buck ba, nauyin ƙarfin ƙarfin ƙarfin wutar lantarki ba koyaushe yana samar da inductor current ba. Lokacin da bututun sauyawa yana kunne, inductor halin yanzu yana gudana zuwa cikin ƙasa ta cikin bututun mai canzawa, kuma ƙarfin halin yanzu yana samar da capacitor na fitarwa, don haka capacitor na fitarwa dole ne ya sami isasshen ƙarfin ajiyar makamashi don samar da na yanzu da ake buƙata ta lodi. a wannan lokacin. Duk da haka, a lokacin kashewar na'urar, halin yanzu yana gudana ta hanyar inductor ba wai kawai yana samar da kaya ba, har ma yana cajin capacitor na fitarwa.

Gabaɗaya magana, lokacin da ƙimar inductance ta girma, ripple ɗin fitarwa zai zama ƙarami, amma ƙarfin ƙarfin wutar lantarki kuma zai zama mafi muni, don haka zaɓin ƙimar inductance za a iya daidaita shi gwargwadon takamaiman buƙatun aikace-aikacen da'ira don cimma nasara. mafi kyawun tasiri.

Ƙarfafa mitar sauyawa na iya sa inductance ya zama ƙarami, ta yadda girman jiki na inductor ya zama ƙarami kuma ya ajiye sararin samaniya, don haka wutar lantarki na yanzu yana da yanayin zuwa babban mita, don saduwa da bukatun ƙarami da ƙarami. girma na kayan lantarki.

Abin da ke sama shine gabatarwar zabar inductor mai dacewa don sauya wutar lantarki. idan kana son ƙarin sani game da inductor, da fatan za a ji daɗin tuntuɓar mu.