IS200DSFCG1A shine Direban Ƙofar 1000/1800 Amp IGBT Direba / Shunt Feedback Board wanda General Electric (GE) ya tsara don layin samfurin Innovation Series™. Wannan allon muhimmin sashi ne a cikin jerin DSFC, da farko ana amfani da shi a cikin gadoji na tushen Pulse Width Modulated (PWM) da tsarin tuƙi na AC. DSFCG1A tana haɗa da'irar ji na yanzu, da'irar gano kuskure, da da'irorin tuƙi na ƙofar IGBT guda biyu. Dukansu direbobi da da'irori na amsawa suna amfani da galvanic da fasahar keɓewar gani don tabbatar da keɓewar aminci tsakanin babban ƙarfin lantarki da ɓangarorin ƙananan ƙarfin lantarki.
An tsara wannan kwamiti musamman don aikace-aikacen tuƙi / tushen tare da shigarwar 600 V LL rms AC kuma yana goyan bayan tsarin tuƙi da aka ƙididdige duka matakan 1000 Amp da 1800 Amp na yanzu. A cikin tsarin 1000 A, ana buƙatar allon DSFC ɗaya kowane lokaci, jimlar allo uku. A cikin tsarin 1800 A, allunan DSFC guda biyu da aka haɗa a cikin tsarin sarkar daisy ana buƙatar kowane lokaci, jimlar allo shida. Abubuwan mu'amalar DSFCG1A tare da tsarin sarrafa tuƙi ta hanyar IS200BPIB Drive Bridge Personality Interface Board (BPIB).
An ɗora hukumar DSFCG1A kai tsaye a kan manyan na'urori na IGBT na sama da na ƙasa na kowane ƙafar lokaci don tabbatar da cewa fitarwar fitar da ƙofar kofa da haɗin shigar da shunt sun yi gajeru gwargwadon yuwuwa, ta haka yana rage haɓakar parasitic da tsangwama. An kiyaye allon zuwa IGBT ta hanyar ƙofar, emitter, da haɗin tattarawa. Daidaitaccen daidaitawa na ramukan hawa na hukumar yayin shigarwa yana da mahimmanci.
II. Babban Ayyuka
Babban ayyuka na IS200DSFCG1A sun haɗa da, amma ba'a iyakance su ba, masu zuwa:
1. Fitar Fase Gate Drive
Yana ba da keɓance hanyoyin tuƙi na ƙofar IGBT guda biyu: ɗayan yana sarrafa babban IGBT (s) na ƙafar lokaci, ɗayan yana sarrafa ƙananan IGBT(s).
Kowane da'irar tuƙi na iya fitar da nau'ikan IGBT guda biyu masu kama da juna.
Kewayon wutar lantarki shine VCC (+15 V) zuwa VEE (-15V), tare da IGBT emitter a matsayin gama gari.
Ƙwaƙwalwar tushe/karɓar ƙarfin halin yanzu yana zuwa 20 Amps.
Matsakaicin mitar sarewar PWM shine 6 kHz.
Ana haɗa diodes ɗin shigar da optocoupler mai sarrafa tuƙi a cikin saitin daidaitacce, yana ba da damar sarrafa duka manyan IGBTs na sama da na ƙasa daga layin kulawa guda ɗaya na murɗaɗi-biyu.
Resistors jerin ƙofar hukumar da gate-emitter capacitors an ƙima su musamman don ƙirar IGBT.
2. Gane Laifi da Rahoto
DSFCG1A na iya gano kurakurai iri biyu: Laifin Desaturation da Laifin Ƙarfin wutar lantarki. Ana ba da rahoton waɗannan kurakuran ta hanyar layin kuskure iri ɗaya ' multiplexed' wanda ke rufe duka manyan da'irori na IGBT.
Laifin Desaturation: Lokacin da aka umurci direba ya kunna IGBT, ana lura da raguwar ƙarfin lantarki a kan mai karɓar emitter na IGBT. Idan wannan ƙarfin lantarki ya wuce 10 V na 4 micro seconds, ana haifar da ɓarna. Bayan kuskuren yankewa, hukumar BPIB tana aiki da hukumar DSFC a cikin yanayin 'fashewa', ta amfani da siginar 2 MHz PWM don kawo wutar lantarkin ƙofar a hankali zuwa sifili tsakanin 2 zuwa 5 micro seconds.
Undervoltage Fault: The voltage between the positive drive power supply (+15 V) and the negative drive power supply (-15 V) is monitored. Idan wannan ƙarfin lantarki ya faɗi ƙasa da 20 V, ana haifar da lahani mara ƙarfi.
Siginonin kuskure ana ORed a hankali, keɓantacce, kuma an ba da rahoton zuwa ga dabaru na sarrafawa ta hanyar keɓancewar direba. A cikin al'ada (Ok) jihar, optocoupler yana ON (fitarwa ƙananan).
3. Shunt na yanzu Feedback
Ana sa ido akan lokacin fitarwa ta hanyar jin raguwar ƙarfin lantarki a cikin shunt lokaci. Ana haɓaka wannan ƙarfin lantarki kuma ana ciyar da shi zuwa da'irar Oscillator Sarrafa Wuta (VCO). Matsakaicin mitar VCO shine 0 zuwa 2 MHz, tare da kewayawa don fitar da 1 MHz a halin yanzu sifili. Canjin ± 200 mV a cikin ƙarfin shunt yana canzawa zuwa canjin ± 800 kHz a cikin mitar fitarwa na VCO. Fitowar VCO ita ce keɓantacce kuma ana watsa shi zuwa dabarun sarrafawa ta hanyar keɓancewar direba.
Da'irar martani na yanzu na iya haifar da kurakurai iri biyu:
Laifin DI/DT: Canjin mataki 100% ko mafi girma a cikin ƙimar shunt halin yanzu zai haifar da rahoton kuskuren DI/DT a cikin 25 microsecond.
Laifi na gaggawa na gaggawa (IOC): Ana ba da rahoton kuskuren IOC lokacin da halin yanzu ya wuce ƙa'idar da aka saita.
4. Kayan Wutar Lantarki
Babban ɓangaren wutar lantarki na da'irori na direba/sa'ido yana da ƙarfi ta hanyar keɓancewa ta hanyar wuta. An haɗa farkon farkon wannan taswira zuwa ± 17.7 V kololuwa (35.4 V ganiya-zuwa-kolo), 25 kHz murabba'in kalaman. Daga cikin iska guda uku na biyu:
Biyu na biyu ana gyara rabin igiyar igiyar ruwa kuma an tace su don samar da keɓe +15 V (VCC) da -15 V (VEE) waɗanda manyan da'irorin direba na IGBT ke buƙata (ba a tsara su ba, ± 5%, 1 A matsakaicin matsakaicin kowane).
Sakandare na uku an gyara shi cikakke kuma an tace shi don samar da keɓantaccen ± 12 V da ake buƙata ta hanyar shunt halin yanzu ra'ayin VCO da kuma gano kuskure (wanda ba a tsara shi ba, ± 10%, matsakaicin matsakaicin 100 mA kowane).
Da'irar shunt kuma yana buƙatar wadatar dabaru na 5 V, wanda aka samar ta hanyar mai daidaita layin layi na 5 V wanda aka haɗa da wadatar +12 V (± 10%, matsakaicin matsakaicin 100 mA). Wutar wutar lantarki ta 5 V ce kawai aka tsara.
Matsakaicin nauyi kamar haka:
± 17.7 V: 0.65 A rms
+ 5V: 150mA
5. Alamar Matsayin LED
Hukumar DSFCG1A tana da alamun LED guda biyar don nuna haɗin haɗin DC da matsayin direba na IGBT:
| na LED |
Nomenclature |
Bayanin |
| Farashin DS1 |
HANYA SAMA DA 50V |
Red LED: ON lokacin da wutar lantarki ta hanyar haɗin DC> 50 V; KASHE lokacin da <50V |
| DS2 |
UFF |
Green LED: ON lokacin da aka kori Upper IGBTs; KASHE lokacin da aka kunna |
| Farashin DS3 |
LFF |
Green LED: ON lokacin da aka kori Ƙananan IGBTs; KASHE lokacin da aka kunna |
| DS4 |
UON |
Yellow LED: ON lokacin da Upper IGBTs aka kunna ON; KASHE lokacin da aka kashe |
| Farashin DS5 |
LON |
Yellow LED: ON lokacin da ƙananan IGBTs aka kunna ON; KASHE lokacin da aka kashe |
III. Aikace-aikacen Tsarin
1. Aikace-aikace a Drive Systems
IS200DSFCG1A muhimmin abu ne a cikin GE Innovation Series™ PWM tsarin tuƙi. Ayyukansa a cikin tsarin sun haɗa da:
Tukin Ƙofa: Yana ba da amintaccen kunnawa da kashe siginonin tuƙi zuwa kayan aikin IGBT, yana tabbatar da ingantaccen aiki na na'urorin wuta.
Sake mayar da martani na yanzu: Daidai ma'auni na halin yanzu ta hanyar shunt kuma yana canza siginar na yanzu zuwa siginar mitar don sarrafa madauki ta tsarin sarrafawa.
Kariyar Kuskure: Ci gaba da lura da matsayin IGBT na aiki, da sauri ba da rahoton kurakurai kamar desaturation, rashin ƙarfi, ko wuce gona da iri don kare na'urorin wuta da lodi.
2. Tsarin Tsarin
Tsarin 1000 A: Yana amfani da allon 1 DSFCG1A kowane lokaci, allunan 3 duka don matakai uku. Kowane allo yana haɗi zuwa allon BPIB ta hanyar haɗin PPL1.
Tsarin 1800 A: Yana amfani da allunan DSFCG1A 2 a kowane lokaci, an haɗa su cikin sarkar daisy. Babban allon yana haɗi zuwa BPIB ta hanyar PPL1; allon bawa yana haɗawa zuwa PPL1 maigidan ta hanyar haɗin PPL2 don siginar wucewa.
3. Yanayin Aikace-aikace na al'ada
Masana'antar AC Canjin Mitar Motoci
PWM Power Inverters
Cibiyoyin Kula da Motoci
Sarrafa Ƙarfafawa don Tsarin Ƙarfafa Ƙarfi
Railway Traction Systems
Abubuwan da aka bayar na Marine Electric Propulsion Systems
IV. Umarnin Shigarwa da Waya
1. Wuri Mai hawa
Kwamitin DSFCG1A yana hawa kai tsaye zuwa kan kayan aikin IGBT. A yayin shigarwa, tabbatar da ƙwanƙolin idon da ke kan allo sun daidaita daidai da ƙofa, emitter, da fil masu tarawa na kayan aikin IGBT. Tsare allon allo ta amfani da kayan aikin da aka bayar don tabbatar da amintaccen haɗin lantarki.
2. Matakan Shigarwa
Tabbatar cewa an kashe tsarin tuƙi kuma ba da damar isashen lokaci (mintuna da yawa) don fitarwa.
Bude ƙofar majalisar ɗin tuƙi kuma gano wurin allon DSFC don shigar ko maye gurbinsa.
Daidaita allon DSFC akan ginshiƙan hawa na IGBT, tabbatar da cewa duk gashin ido sun dace daidai.
Tabbatar da allon ta amfani da kwayoyi 10, juya su zuwa 70 in-lbs.
Sake haɗa duk igiyoyi bisa ga tambarin su, tabbatar da cewa masu haɗin suna zaune cikakke.
3. Bayanin Waya
Tashoshi-kan Tashoshi: Ana amfani da su don haɗa haɗin haɗin DC da layukan gano ƙarfin lantarki na lokaci.
E1: Layin Sensing Voltage Section (MVFB)
E17: DC Link Positive (DCLP)
E18: DC Link Negative (DCLN)
IGBT Mounting Eyelets: Ana amfani dashi don haɗi zuwa ƙofar IGBT, emitter, da mai tarawa.
UC: Haɗin Mai Taɗi na Sama (Haɗin haɗin DC tabbatacce)
UGA/UEA: Babban Ƙofar Na'ura/Emitter
UGB/UEB: Ƙofar Na'urar Upper B/Emitter
LGA/LEA: Ƙananan Ƙofar Na'ura/Emitter
LGB/LEB: Ƙofar Na'urar Ƙaramar B/Emitter
LE: 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 DC (DC).
Toshe Connectors:
PPL1: Haɗa zuwa allon BPIB, ɗauke da siginar tuƙi, siginar kuskure, siginar VCO, da ƙarfi.
PPL2: Haɗa zuwa allon DSFC na gaba a cikin sarkar daisy (amfani da shi kawai a cikin tsarin 1800 A).
SHPL: Haɗa zuwa shunt na yanzu, shigarwa don siginar ƙarfin shunt.
THPL/THPL1/THPL2: Haɗin kai don Masu Ganowar Ƙarfafawar Ƙarfafawa (RTD) ko wucewa ta hanyar haɗin kai don daisy-chaining.
DPPL1/DPPL2: Yana karɓar 18.4V AC mafi girman ƙarfin murabba'in raƙuman raƙuman ruwa daga BPIB, ko aiki azaman hanyar wucewa ta ikon daisy-chaining.
V. Bincike da Kulawa
1. Alamar Matsayi
Ana iya kimanta matsayin tsarin da sauri ta hanyar LEDs guda biyar:
DS1 (Ja): Alamar Wutar Lantarki na DC. Ya kamata a kunna yayin aiki na yau da kullun lokacin da wutar lantarki ta bas ta wuce 50 V.
DS2/DS3 (Green): Babban/Ƙasa IGBT KASHE Manufofin Matsayi. ON lokacin da IGBTs aka kashe, KASHE lokacin da aka kunna.
DS4/DS5 (Yellow): Babban/Ƙasa IGBT Akan Manufofin Hali. ON lokacin da aka kunna IGBT, KASHE lokacin da aka kashe.
Yayin aiki na PWM na al'ada, DS2 da DS3 na iya zama ON akai-akai ko musanyawa tare da DS4/DS5 dangane da jihar, yayin da DS4 da DS5 yakamata suyi walƙiya daidai da bugunan PWM.
2. Binciken Laifi
DSFCG1A yana ba da cikakkiyar gano kuskure, ana iya karantawa ta hanyar hukumar BPIB:
Laifin Desaturation: Yawanci yana nuna IGBT mai wuce gona da iri ko gajeriyar kewayawa. Duba kaya da IGBT kayayyaki.
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 Ƙira: Yana nuna rashin wadataccen wutar lantarki. Duba da'irar samar da wutar lantarki.
Laifin DI/DT: Yana Nuna yawan canjin canjin da ya wuce kima, mai yuwuwa saboda masu wuce gona da iri ko rashin kulawa.
Laifin IOC: Yana nuna wuce gona da iri. Duba kaya da da'irar martani na yanzu.
3. Kariyar Kulawa
Bi matakan tsaro na ESD (Electrostatic Discharge) yayin gudanar da allo. Saka madauri na ƙasa da kuma adana alluna a cikin jakunkuna marasa ƙarfi.
Kar a haɗa ko cire haɗin igiyoyi yayin da ake amfani da wutar lantarki, don hana lalacewar jirgin ko haɗarin aminci.
Bincika masu haɗin kai lokaci-lokaci don sako-sako kuma tabbatar da aikin LED na yau da kullun.
Lokacin maye gurbin allo, tabbatar da sabuwar hukumar tana da madaidaicin lambar ƙira (IS200DSFCG1A) kuma kula da haɓakawa da ƙayyadaddun juzu'i.
