injin wutar lantarki ka’idar aiki – a layi daya resonance

yawan wutar lantarki

Samar da wutar lantarki ta tanderun narkewar induction yana ɗaukar sautin daidaici matsakaicin wutar lantarki wadata, wanda shine farkon aikace-aikacen samar da wutar lantarki na tsaka-tsaki a China. Na’urar musanya mitar ce wacce ke juyar da mitar wutar lantarki mai hawa uku AC makamashin lantarki zuwa matsakaicin mitar wutar lantarki lokaci-lokaci. Amfaninsa shine cewa yana da ƙarfin daidaitawa mai ƙarfi kuma ana iya amfani dashi azaman wutar lantarki don injin wutar lantarki .

Hoto 2-1 yana nuna ka’idar zane na babban da’irar na layi daya resonant matsakaici mitar wutar lantarki, wanda aka yafi hada da warewa sauya (DK), AC contactor (ko lantarki kewaye KM), mai shigowa line inductance (L1 ~ L3) , da sauri coupler (FU), rectifier (VT1 ~ VT6), smoothing reactor (LF), inverter (VT7 ~ VT10), layi daya resonant load (L, C). Mai gyara yana canza mitar wutar lantarki mai juzu’i uku zuwa halin yanzu kai tsaye; ana amfani da na’ura mai laushi don tace gyare-gyare na yanzu da kuma ware nau’i-nau’i daban-daban tsakanin mai gyara da inverter; mai inverter yana juyar da halin yanzu kai tsaye zuwa mitar tsaka-tsakin lokaci-ɗaya Alternating current; da layi daya resonant load hada da wani inductor da diyya capacitor iya mafi alhẽri daidaita da canji na load Properties a lokacin dumama tsari.

Hoto 2-1 Daidaitacce rawa tsaka-tsakin mitar wutar lantarki babban kewaye

( 1) Nau’in gada-nau’in cikakkar sarrafa madaurin gyara da’irar mai gyara da’ira na mitar mitar wutar lantarki mai daidaitawa tana ɗaukar nau’in gada mai cikakken iko guda uku. An nuna ƙa’idar a cikin hoto 2-2. Tun da smoothing reactor (LF) yana da babban inductance kuma lodi ne mai inductive load, da load halin yanzu fitarwa ta rectifier ne ci gaba da kuma madaidaiciya line. Lokacin da aW60 °, yanayin fitarwa na da’ira mai gyara daidai yake da na nauyin juriya, kuma ka’idar gudanarwa iri ɗaya ce da ta ƙarfin juriya. Lokacin da a> 60 ° , saboda tasirin inductor LF , thyristor za a kunna har yanzu bayan wutar lantarki ta ketare sifili, har sai an kunna thyristor na gaba don kunna, don haka wani yanki mara kyau ya bayyana a cikin yanayin motsi na wutar lantarki mai daidaitawa, amma abin da ake fitarwa na gyaran yanzu har yanzu matakin ɗaya ne

Waya Lokacin da kusurwar sarrafawa ya karu zuwa 90. Lokacin da wurare masu kyau da marasa kyau a cikin nau’in ƙarfin lantarki na fitarwa sun kasance daidai, matsakaicin darajar ƙarfin fitarwa Ud = 0. Lokacin da a> 90 °, da’irar gyarawa tana aiki a cikin yanayin aiki mai inverter. Matsakaicin canjin lokaci na da’irar gyarawa na matsakaicin wutar lantarki shine 0 ° ~ 150 °.

( 2) Inverter circuit Hoto 2-3 siffa ce ta tsararraki na da’irar inverter. Ana haɗa capacitor C a cikin da’irar kaya a layi daya tare da inductor coil L , kuma commutation yana dogara ne akan ka’idar daidaitaccen resonance, don haka ana kiran shi da’irar resonance inverter circuit. Wutar wutar lantarki ta DC Ud da thyristor ke da cikakken sarrafa madaurin gyarawa yana ci gaba da daidaitawa, kuma da’irar inverter mai daidaitawa tana juyar da wutar DC zuwa matsakaicin mitar AC wutar lantarki zuwa kaya. Kitin gefen DC yana da babban tace inductance LF, don haka mai jujjuya nau’in halin yanzu. Saboda mitar aiki yana da girma sosai, thyristors na hannun gada 4 na da’irar inverter suna ɗaukar thyristors da sauri. L7 ~ L10 su ne commutation inductance na inverter thyristor, wanda ake amfani da shi don iyakance tashin halin yanzu na thyristor a lokacin commutation.

Hoto 2-3 Tsarin tsari na da’irar inverter mai kama da juna