Analysis na Parallel Resonant Inverter don Matsakaicin Ƙarfin Ƙarfi

Parallel resonant inverter, da lodi ne a layi daya resonant load. Yawancin lokaci ana buƙatar tushen yanzu don samar da wuta. A cikin dumama shigar da, tushen yanzu yawanci yana kunshe da mai gyarawa da babban inductor. Saboda girman inductance mai girma, ana iya ƙididdige cewa an gyara halin yanzu a ƙarshen shigarwar na inverter. A madadin kunnawa da kashe na’urorin da za a iya sarrafawa a kan inverter na iya samun madaidaicin raƙuman raƙuman murabba’i a wurin fitarwa na inverter. Girman na yanzu ya dogara da ƙimar shigar da injin inverter na yanzu, kuma mitar ta dogara da na’urar. mita aiki. Kamar yadda aka nuna a cikin hoto 2.4, inverter da ke haɗa capacitor na ramuwa da na’ura mai ɗaukar nauyi (L da R) a layi daya kamar yadda nauyin gadar inverter ke kiransa mai jujjuyawar daidaitawa. An haɗa babban inductance Ld a cikin jerin tare da wutar lantarki na DC a cikin inverter na layi daya, don haka nauyin nauyi yana da tsayi kuma ba ya tasiri ta hanyar canji na rashin ƙarfi. Lokacin da ma’aunin wutar lantarki ba 1 ba ne, za a ƙara ɓangaren ƙarfin wutar lantarki na ɗaukar nauyi zuwa na’urar sauyawa. Don hana IGBT lalacewa ta hanyar wutar lantarki ta baya, dole ne a haɗa diode mai sauri a jere tare da IGBT. Ko da an yi amfani da na’urar IGBT, saboda akwai diode mai sauri na anti-parallel a ciki, IGBT ba zai jure wutar lantarki ba, kuma jerin fast diode ba za a iya soke shi ba, in ba haka ba na’urar za ta lalace ta hanyar zazzagewar wutar lantarki sakamakonsa. juyi ƙarfin lantarki. Dangane da ƙarfin lantarki da dangantakar lokaci na yanzu na da’irar tanki mai ɗaukar nauyi, inverter na layi ɗaya na iya aiki a cikin jihohin aiki guda uku: resonance, inductive da capacitive jihohi. Saboda kasancewar manyan inductance Ld, don ci gaba da ci gaba a halin yanzu, yayin tafiyar tafiya, gadoji na sama da na ƙasa Dole ne hannu IGBT ya bi ka’idar farko kunnawa sannan a kashe, wato, ya kamata a sami lokaci mai tsawo RT. Tsawon lokacin haɗuwar commutation yana da alaƙa da kusanci da inductance na fitarwa na inverter. Mafi girma inductance, mafi tsayi lokaci..