IS200ERSCG1A ita ce ginshiƙan kwamitin jujjuya wutar lantarki a cikin tsarin sarrafa kuzari na General Electric (GE) EX2100, wanda aka tsara musamman don aikace-aikacen sarrafa tushen IGBT. A matsayin Exciter Regulator Static Converter Board (ERSC), IS200ERSCG1A yana ɗaukar muhimmin aiki na canza hanyar haɗin wutar lantarki ta DC zuwa daidaitaccen sarrafawar Pulse Width Modulated (PWM). Yana aiki azaman siffa ta zahiri na gabaɗayan Module Canjin Wuta (PCM). An shigar da allon a cikin Exciter Regulator Backplane (ERBP) kuma yana aiki tare da haɗin gwiwa tare da hukumar ERDD (Exciter Regulator Interface da Dynamic Discharge) don karɓar umarnin sarrafawa da bayar da rahoton matsayin na'urar wutar lantarki. Tare, suna kammala canji na ƙarshe daga umarnin sarrafawa na dijital zuwa filin janareta na yanzu.
A cikin zuciyarta, IS200ERSCG1A tana da haɗe-haɗen gada mai inverter IGBT mai hawa uku. A cikin wannan tsarin, IGBT guda biyu an keɓe musamman don samar da kayan aikin PWM DC don fitar da iskar jannata. An sadaukar da IGBT na uku don aikin fitarwa mai ƙarfi na hanyar haɗin DC-lokacin kin amincewa da lodin janareta ko tafiya yana haifar da ƙarfin haɗin gwiwar DC ya tashi da sauri, wannan IGBT cikin sauri da aminci yana watsar da wuce gona da iri da aka adana a cikin masu haɗin haɗin DC ta hanyar mai ƙarfi mai ƙarfi na waje. Wannan ra'ayin ƙira na 'biyu-cikin-ɗaya' yana samun babban matsayi na haɗin kai na daidaitaccen ƙa'idar tashin hankali na yanzu da saurin kariyar tsarin a cikin ƙaramin allo ɗaya.
Matsayin Tsarin da Haɗin Gine-gine
A cikin sarkar wutar lantarki na EX2100 IGBT mai kula da tashin hankali, IS200ERSCG1A tana tsakanin hanyar haɗin DC da da'irar fitar da kuzari. A sama, yana karɓar matakai daban-daban na ikon aiki na DC daga tsarin samar da wutar lantarki ta EPSM ta hanyar jirgin baya na ERBP, kuma yana zana shigar da wutar lantarki daga hanyar haɗin DC. A ƙasa, yana haɗa kai tsaye zuwa iskar jan hankali na janareta (ta hanyar mai lamba DC ko mai karyawa). Game da sarkar siginar sarrafawa, IS200ERSCG1A yana mu'amala tare da hukumar ERDD ta hanyar kebul mai sadaukarwa, karɓar bugun bugun ƙofa na IGBT daga ERDD da aika bayanan amsa mai mahimmanci kamar ƙarfin haɗin haɗin DC, fitarwar shunt halin yanzu, IGBT zafin jiki, da matsayi na tuƙi (ciki har da matsayin samar da wutar lantarki da siginonin kuskuren desaturation).
IS200ERSCG1A tana goyan bayan tsarin tsarin tsarin simplex da Warm Ajiyayyen duka, daidai da ɗaya-zuwa ɗaya tare da allon ERDD. A cikin tsarin simplex, IS200ERSCG1A guda ɗaya tana ɗaukar duk ayyukan canza wutar lantarki. A cikin sabon tsarin, ana shigar da allunan IS200ERSCG1A guda biyu bi da bi a cikin jiragen baya na sassan sarrafawa na M1 da M2/C, suna aiki azaman madadin juna, tare da canja wuri mara lahani ta hanyar ERRR Redundant Relay board.
Game da shigar wutar lantarki, ana iya ba da hanyar haɗin DC na IS200ERSCG1A daga tushe guda biyu: tushen wutar lantarki da aka gyara AC, wanda aka samo daga tashoshi na janareta ko bas ɗin taimako ta hanyar injin motsa jiki da mai gyara diode; ko tushen baturin tashar DC na 125 V ko 250 V. Dukansu suna haɗuwa bayan keɓewar diode da tacewa, suna ba da tabbacin samar da wutar lantarki ga hanyar haɗin DC.
Cikakken Ayyukan Mahimmanci
1. IGBT Pulse-Wiidth Modulated Excitation Output
Gadar inverter IGBT a cikin IS200ERSCG1A chops kuma tana daidaita ƙarfin haɗin haɗin DC zuwa cikin ƙarfin kuzarin da ake buƙata da na yanzu. Mitar sarewa tana kusan 1000 Hz, zaɓin da ke daidaita hasarar IGBT na sauyawa, fitarwa na yanzu, da buƙatun dacewa na lantarki. Ta daidai sarrafa tsarin sake zagayowar aikin PWM, IS200ERSCG1A na iya isar da ci gaba mai daidaitawa mai haɓaka fitarwa daga sifili zuwa matsakaicin ƙimarsa, biyan buƙatun ƙa'idar ƙarfin lantarki ta atomatik na janareta a ƙarƙashin nau'ikan kaya da yanayin aiki.
Dangane da aikin fitarwa, IS200ERSCG1A na iya samar da matsakaicin ci gaba na tashin hankali na 20 A DC, tare da damar tilastawa 150% (mafi girman 30 A DC) na daƙiƙa 10. Wannan ƙarfin tilastawa na wucin gadi yana da mahimmanci don riƙe ƙarfin lantarki na janareta yayin kurakuran tsarin wutar lantarki-lokacin da mummunan tashin hankali kamar gajeriyar da'ira ta faru akan grid ɗin wutar lantarki, tsarin motsa jiki dole ne nan take kuma yana haɓaka haɓakar haɓakar halin yanzu don hana rushewar wutar lantarki ta janareta.
Da'irar fitarwa ta haɗa da shunt na DC wanda ke lura da tashin hankali na halin yanzu a ainihin lokacin. Wannan siginar, bayan an daidaita shi ta hanyar hukumar ERDD, ana mayar da ita zuwa ga mai sarrafawa, tana samar da tushen ra'ayi don Ka'idodin Filin Yanzu (FCR) da Ƙimar Ƙarfafawa (OEL).
2. Kariya Mai Sauƙi
IGBT na uku akan allon IS200ERSCG1A an sadaukar dashi ga aikin fitarwa mai ƙarfi na hanyar haɗin DC. Lokacin da naúrar janareta ta sami ƙin kin ɗaukar nauyi kwatsam, balaguron gaggawa, ko kuskuren grid wanda ke haifar da ƙarfin wutar lantarki ta hanyar haɗin haɗin DC zuwa karu saboda amsawar kuzari, hukumar ERDD ta gano cewa ƙarfin haɗin DC ɗin ya wuce amintaccen madaidaicin. Nan take ta aika da siginar tuƙi don kunna wannan fitarwar IGBT, da sauri tana watsar da makamashin da aka adana a cikin capacitors ta hanyar juzu'in fitarwa mai ƙarfi na waje. Ana aiwatar da wannan aikin kariyar gaba ɗaya a cikin kayan masarufi, yana ba da amsa cikin sauri ba tare da buƙatar sa hannun software mai sarrafawa ba. Don haka dogara da aminci yana kare na'urorin wutar lantarki da masu haɗin haɗin DC daga lalacewa mai ƙarfi ko da a lokacin asarar sadarwa ko rashin aikin sarrafawa.
3. DC Link Soft Cajin
Don hana wuce gona da iri na halin yanzu cikin ma'ajin haɗin haɗin DC a kan ƙarfin farko, IS200ERSCG1A yana aiki tare da relay K3 don aiwatar da aikin caji mai laushi na hanyar haɗin DC. A farkon ƙarfin wutar lantarki, K3 yana cikin buɗaɗɗen yanayi, kuma hanyar haɗin DC tana cajin sannu a hankali ta hanyar juzu'i mai iyakancewa. Da zarar wutar lantarki ta DC bas ta kai ƙimar da aka saita, K3 yana rufewa, ya ƙetare resistor mai iyakancewa, kuma tsarin ya shiga aiki na yau da kullun. Ana aiwatar da wannan tsari ta atomatik a duk lokacin da tsarin motsa jiki ya fara, yadda ya kamata ya tsawaita rayuwar ma'aunin mahaɗin DC da gadar gyara.
4. Cikakken Sa ido da Kariya
Don tabbatar da amintaccen aiki na tsarin wutar lantarki na IGBT, IS200ERSCG1A yana haɗa ayyukan sa ido da kariya da yawa:
Ganewar Desaturation na IGBT : Direban ƙofar ga kowane IGBT yana ci gaba da sa ido kan wutar lantarki mai tara-emitter lokacin da na'urar ke kunne. Idan wannan ƙarfin lantarki ya zarce madaidaicin saiti (yana nuna IGBT ya fito daga cikakken jikewa kuma ya shiga yankin layi tare da babban wutar lantarki), nan da nan direban ya kashe IGBT kuma ya ba da rahoton laifin ga ERDD.
Kula da Yanayin Zazzabi : Abubuwan gano yanayin zafi da aka sanya akan mashin zafi na IGBT suna ba da ƙararrawa sama da zafin jiki da siginar kariyar tafiya.
Kulawar Ƙofar Ƙofar Ƙofar Ƙofar : Ana kula da wutar lantarki na kowane direba na IGBT a ainihin lokacin don tabbatar da cewa direban zai iya samar da isasshen wutar lantarki a duk yanayin aiki.
