IS200BPIAG1A IGBT Drive Bridge Personality Interface Board wani muhimmin abu ne na keɓancewa ta GE Industrial Control Systems don tsarin tuƙi AC mai hawa uku na tushen IGBT. IS200BPIAG1A yana ba da cikakkiyar siginar siginar abin dogaro tsakanin na'urorin sarrafa kayan lantarki da na'urorin lantarki, yin aiki a matsayin gada mai mahimmanci wanda ke ba da damar sarrafa babban aiki da amintaccen aiki na tsarin tuƙi. IS200BPIAG1A an ɗora shi a cikin madaidaicin nau'in allo na VME da musaya tare da tsarin baya na tsarin sarrafawa ta hanyar haɗin P1. Yana da haɗin kai kai tsaye zuwa na'urorin wutar lantarki na IGBT na matakan A, B, da C ta hanyar haɗin filogi da aka sadaukar da lokaci guda shida.
IS200BPIAG1A yana haɗa keɓaɓɓen keɓaɓɓen keɓaɓɓen keɓaɓɓen keɓaɓɓen ƙofa na IGBT IGBT, keɓancewar shunt Voltage Controlled Oscillator (VCO) na yanzu, da keɓaɓɓen da'irorin ra'ayoyin VCO don saka idanu kan wutar lantarki ta hanyar DC da VAB da ƙarfin fitarwa na VBC. Bugu da ƙari, kwamitin IS200BPIAG1A yana fasalta ginanniyar matakan matakan kayan masarufi da kariyar kuskuren IGBT, yana ba da cikakkiyar tsarin kariya na gida don gadar wutar lantarki ta IGBT. Duk waɗannan ayyuka an haɗa su a kan ma'auni guda ɗaya na nau'in nau'i na VME, yana nuna GE na haɗe-haɗe da falsafar ƙira na zamani don mu'amalar wutar lantarki.
Tsarin Tsarin Samar da Wuta
Tsarin samar da wutar lantarki na IS200BPIAG1A yana amfani da tsarin ƙira mai keɓantacce don tabbatar da amincin wutar lantarki tsakanin matakai da tsakanin manyan ƙarfin lantarki da ƙananan ƙarfin lantarki. Wutar keɓantaccen wutar lantarki na hukumar ta samo asali ne daga iska na biyu na taransfoma uku, wanda aka keɓe ga kowane lokaci. Sigina na murabba'in 17.7 V AC wanda aka kawo ta hanyar haɗin P1 yana ba da ikon firikwensin transfoma. Ga kowane transformer:
Kayayyakin Wutar Lantarki na Ƙofar : Biyu daga cikin iska na biyu na biyu an gyara rabin igiyar igiyar ruwa kuma an tace su don samar da keɓaɓɓen kayan +15 V (VCC) da -7.5 V (VEE) waɗanda manyan da'irar direban IGBT ke buƙata. Waɗannan suna ba da ingantattun ingantattun ƙarfin son zuciya da mara kyau don tabbatar da ingantaccen kunnawa da kashe IGBTs.
Samar da Ƙarfin Siginar Siginar : Iskar iska ta sakandare ta uku an daidaita ta da cikakkiyar igiyar ruwa don samar da keɓantaccen ± 12 V da ake buƙata ta da'irar ra'ayoyin ra'ayoyin shunt na yanzu, da'irorin ra'ayin wutar lantarki na zamani VCO, da kewayawar gano kuskure. Bugu da ƙari, mai sarrafa linzamin kwamfuta na 5 V akan wadatar +12 V yana haifar da wadatar dabaru na 5 V mai haske.
Ƙarfin Ma'anar Sarrafa : Ana ba da wadatar nuni + 5 V da ake buƙata don dabarun sarrafa tsarin kai tsaye zuwa allon IS200BPIAG1A ta hanyar haɗin P1.
Gabaɗayan buƙatun wutar lantarki don IS200BPIAG1A an bayyana su a sarari: matsakaicin 1.5 W daga wadatar +5 V DC, kuma daga wadatar AC na 17.7 V, matsakaicin 5 W ba tare da nauyin ƙarar direban kofa ba da matsakaicin 18 W tare da nauyin ƙarar direban ƙofar.
IGBT Gate Drive kewaye
An saita IS200BPIAG1A tare da keɓantaccen keɓaɓɓen keɓaɓɓen keɓaɓɓen keɓancewar kofa na IGBT don kowane ƙafar lokaci: ɗayan yana sarrafa IGBT na sama kuma ɗayan yana sarrafa ƙananan IGBT. Wannan jimlar da'irar direba shida na matakai uku. Kowane da'irar yana kunshe da keɓantaccen tsarin tuƙi na gate ɗin matasan gate da ƙananan adadin abubuwan da aka tsara.
Halayen Tuba da Ayyukan Kariya : Modulin tuƙin ƙofa yana fitar da ƙofar IGBT tsakanin VCC (+15 V) da VEE (-7.5 V), yana ba da isasshiyar kyawawa mai kyau don tabbatar da IGBT ya cika cikakke yayin gudanarwa da isasshen ƙarancin ƙima don tabbatar da ingantaccen kashewa da juriya ga kunna parasitic. Abubuwan da aka sarrafa na manyan kayayyaki na sama da na ƙasa suna haɗe a cikin tsarin daidaitawa don hana gudanarwa lokaci guda, wanda zai haifar da harbi ta gajeriyar da'ira a cikin ƙafar lokaci. Samfurin yana fasalta ƙarfin nutsewa kololuwa/madogara na yanzu na 5.0 A, tare da jinkirin kunnawa/kashewa na 1.5 microseconds kawai.
Tsarin Gano Laifi : Kowane da'irar tuƙi na ƙofar yana iya haifar da kurakurai iri biyu:
Laifin Desaturation : Lokacin da aka umarci module ɗin don kunna IGBT, yana lura da raguwar ƙarfin lantarki tsakanin mai tarawa da emitter na IGBT. Idan wannan ƙarfin lantarki ya zarce madaidaicin madaidaicin kusan 10 V na tsawon lokaci fiye da 4.2 microseconds (mafi girman 6.6 microseconds), yana nuna cewa IGBT ya fito daga jikewa kuma ya shiga yankin aiki mai layi, wanda zai iya haifar da saurin zafi da lalacewa. Na'urar za ta kashe IGBT nan da nan kuma ta bayyana laifin rashin saturation.
Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙi aheyd : Hakanan tsarin yana kula da ƙarfin lantarki tsakanin VCC da VEE. Idan wannan ƙarfin lantarki ya faɗi ƙasa da 18 V, ƙarfin wutar lantarki ɗin ƙofar bai isa ya iya fitar da IGBT da dogaro ba, kuma kuskuren ƙarancin wuta zai faru. Waɗannan sigina na kuskure guda biyu suna OR-ed tare kuma ana haɗe su ta hanyar gani zuwa da'irar dabaru na sarrafawa.
Shunt Tsarin Ba da Bayani na Yanzu
IS200BPIAG1A yana samun daidaitaccen ma'auni na ma'aunin lokaci na fitarwa ta hanyar gano juzu'in wutar lantarki a tsakanin shunt resistor a cikin kowane nau'i na A, B, da C. Tashar martani na yanzu don kowane lokaci yana da cikakken 'yanci da keɓewa.
Canza siginar VCO : Siginar wutar lantarki a cikin shunt ana fara sanya shi ta hanyar amplifier sannan a wuce zuwa da'irar VCO, wanda ke canza shi zuwa siginar mitar. Matsakaicin mitar fitarwa na VCO shine 0-2 MHz, kuma wurin aiki yana da ban sha'awa ta yadda a sifilin halin yanzu, fitarwar ƙima shine 1 MHz. Matsakaicin madaidaicin ƙarfin shunt shine ± 200 mV, daidai da canjin mitar fitarwa na ± 800 kHz. Wannan yana ba da damar ingantacciyar ma'auni na yanzu, ainihin lokaci wanda tsarin sarrafawa zai iya sake gina shi cikin sauƙi ta hanyar ƙididdige mitar mai sauƙi.
Ayyukan Kariyar Kuskure : Da'irar ra'ayi na yanzu kuma tana iya gano laifuffuka iri biyu:
Laifin DI/DT : Lokacin da shunt halin yanzu ya sami canjin mataki na 100% ko fiye na ƙimar da aka ƙididdige shi, da'irar martani na yanzu na iya ganowa da ba da rahoton wannan laifin a cikin 25 microsecond, yana hana rikicewar tsarin daga ƙimar canjin yanzu.
Laifi na overcurrent (OC) : An saita madaidaicin madaidaicin a 250% na ƙimar shunt halin yanzu. Idan an gano halin yanzu ya wuce wannan madaidaicin, siginar kuskuren da ya wuce kima nan da nan zai fara. Waɗannan sigina na kuskure guda biyu na yanzu suma OR-ed tare kuma ana watsa su zuwa ɓangaren dabaru na sarrafawa ta hanyar keɓewar gani.
Mataki-zuwa-lokaci da kuma DC Link Voltage Feedback
VAB da VBC Matsayi-zuwa-Mataki na Karɓi Voltage Feedback : IS200BPIAG1A cikin hazaka yana auna ƙarfin fitarwa-zuwa-lokaci VAB da VBC ta tashoshi biyu waɗanda aka samo daga wuraren haɗin shunt. Da'irar VAB ta dogara ne tare da da'irar B shunt VCO kuma tana haɗa zuwa lokaci A ta hanyar hanyar sadarwa mai juriya. Da'irar VCB ta dogara ne da da'irar C shunt VCO kuma tana haɗawa zuwa lokaci B ta hanyar hanyar sadarwa mai jurewa. Kewayon mitar fitarwa na kowane VCO shine 0–2 MHz, tare da fitowar ƙima na 976.8 kHz a sifili-zuwa-lokaci ƙarfin lantarki. A ± 1.0 V lokaci-zuwa-lokaci ƙarfin lantarki yayi daidai da canjin mitar fitarwa na ± 959.58 Hz. Duk abubuwan da aka fitar na VCO suna haɗe zuwa dabarun sarrafawa ta hanyar keɓewar gani.
Feedback Voltage na DC Link : An ƙaddamar da da'irar amsa wutar lantarki ta uku ta VCO don saka idanu kan ƙarfin haɗin DC. Wannan da'irar ana nusar da shi zuwa da'ira na ƙananan ƙofa na ƙofa, tare da ƙulli mai jujjuyawa zuwa haɗin haɗin IGBT na sama na lokaci A. Wurin fitarwa na VCO daidai yake 0-2 MHz. An daidaita shigarwar ta yadda ƙarfin haɗin 0 zuwa 1198 V DC ya dace da mitar fitarwa na 0 zuwa 2 MHz.
Sarrafa Laifi da Direban Ƙofar Kashe injiniyoyi
Siginonin kuskure daga IS200BPIAG1A na wucin gadi ne a yanayi, sun kasance gaskiya ne kawai na tsawon lokacin yanayin kuskure. Don haka, dole ne tsarin sarrafawa ya yi amfani da da'irar sarrafa kuskure ta hanyar haɗin P1 don manne waɗannan sigina.
Lokacin da aka gano kowane laifi, IS200BPIAG1A yana ɗaukar matakan kariya ta hanyar cire ikon sarrafawa daga dukkan na'urorin direban IGBT guda shida. Ƙaƙƙarfan layukan kashe babban sauri da rashin aminci a cikin mahaɗin P1 ana ba da su don aiwatar da wannan aikin:
Kashe Direba Mai Sauƙi : Lokacin aiki na yau da kullun, layin DRVPC yakamata ya zama ƙasa da hankali kuma +5 V yakamata a yi amfani da layin DRVP5. Lokacin da aka gano kuskure, ɗaukar babban layin DRVPC yana fara kashe direban kofa mai sauri, yana rage lokacin amsawar kariya.
Kashe Direba Mai Amincewa : Cire wutar +5 V daga layin DRVP5 ta hanyar saitin lambobin sadarwa na waje yana ba da hanyar da ba ta da aminci don murkushe samfuran direbobin IGBT. Ko da babban tashar kashe tashar ta gaza, wannan hanyar tushen tuntuɓar tana tabbatar da kashe IGBT a dogaro da gaske.
Alamar allo da Haɗin Intanet
IS200BPIAG1A yana da na'urar ƙwaƙwalwar ajiya mai lamba 1024-bit akan na'urar ƙwaƙwalwar ajiya wacce aka tsara tare da tantance allo da bayanin bita, tana goyan bayan ikon gano allo na toshe-da-wasa ta atomatik don tsarin sarrafawa.
P1 Bridge Control Connector yana amfani da daidaitaccen mahaɗin VME. Ana amfani da adadi mai yawa na fil a cikin layuka A da D don barin wutar lantarki don tabbatar da amintaccen tazara tsakanin sigina mai girma da ƙananan ƙarfin lantarki. Layukan B da C suna ɗaukar duk siginar sarrafawa na ainihi: 17.7 V AC shigar da wutar lantarki, gada damar sigina, ikon sarrafa direba, sake saita kuskure, desaturation / UV da shunt matsayi ga duk matakai uku, siginar umarnin tuƙi na ƙofa, siginonin fitarwa na mitar VCO, layin ID na allo, da fitarwar wutar lantarki + 5 V.
Haɗin Haɗin Mataki na shida suna haɗa kai tsaye zuwa na'urorin wutar lantarki na IGBT guda uku kuma an raba su zuwa: APL, BPL, da CPL (waɗanda ke ɗauke da layukan tuƙi na ƙofa da wuraren gano shunt don kowane lokaci), da AAPL, BAPL, da CAPL ( waɗanda ke ba da keɓantaccen ikon don manyan da'irori na direba na kowane lokaci).
