IS200AEBMG1A . ƙwararren ƙwararren ƙwararren IGBT ne (Insulated Gate Bipolar Transistor) Advanced Energy Bridge Module (AEBM) wanda kasuwancin GE Vernova's GE Energy ya haɓaka kuma ya kera shi A matsayin core ikon lantarki bangaren a cikin GE 2.x MW Dindindin Magnet Generator (PMG) iska ikon canza tsarin, wannan module samar da jiki harsashi ga ikon canza wuta a kan duka janareta da grid bangarorin.
A cikin mai jujjuya wutar iska, IS200AEBMG1A ba taron hukumar da'ira ba ce ta tsaye amma a'a haɗaɗɗen tsarin lokaci mai ƙarfi wanda ya haɗa IGBTs mai ƙarfi, ƙaramin tushe heatsink, mu'amalar busbar, da dabaru na kariya. Yana jujjuya siginar sarrafa dijital zuwa ƙarfin jujjuyawar makamashin lantarki mai ƙarfi, yana aiki azaman cibiya mai haɗa ƙaƙƙarfan dabaru na tsarin sarrafawa zuwa babban ƙarfin wutar lantarki, babban da'ira mai ƙarfi na yanzu. Ƙirar ta tana bin ƙa'idodi masu ra'ayin mazan jiya da ƙa'idodin sarrafawa mai ƙarfi, yana tabbatar da cewa tsarin injin turbine na iya kasancewa akan layi yayin tashin hankali mai ƙarfi (kamar Low Voltage Ride-Ta, LVRT) kuma cikin sauri ya ci gaba da aiki na yau da kullun da zarar an share laifin grid.
2. Babban Ayyuka da Ka'idodin Aiki
A cikin 2.x MW PMG tsarin jujjuya iska, kowane Mai Canjawar Zaure yawanci yana ƙunshe da nau'ikan nau'ikan lokaci guda uku (Phase A/B/C). IS200AEBMG1A, yana aiki azaman lokaci ɗaya, yana aiwatar da ayyuka masu mahimmanci masu zuwa:
2.1 AC-DC-AC Conversion Core
Juyawar Generator-Side : A cikin yanayin gyara aiki, IGBTs na sama da na ƙasa gada akan IS200AEBMG1A suna karɓar siginar tuƙi na ƙofar Pulse Width Modulation (PWM) daga allon Alternate Energy Bridge Interface (AEBI). Suna juyar da madaidaicin-mita, ƙarfin wutar lantarki AC wanda Dindindin na Magnet Synchronous Generator ke samarwa (yawanci akan babban kewayon mitar da ya dace da 500-1800 rpm) zuwa ƙarfin wutar lantarki na DC, wanda ake ciyar da shi cikin hanyar haɗin DC.
Canjin Side-Grid : A cikin yanayin inverter, tsarin, sarrafawa ta ko dai Alternate Energy Dynamic Brake (AEDB) allon ko allon AEBI, yana juyar da wutar lantarki ta DC daga hanyar haɗin DC zuwa cikin wutar AC wanda aka daidaita tare da grid mai amfani a ƙayyadaddun mitar (50/60 Hz) da ƙarfin lantarki (690 V AC), ko ikon haɓaka ikon haɗin kai.
2.2 Birki mai ƙarfi (DB)
A cikin ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun tsarin (musamman tsarin Phase A), IS200AEBMG1A kuma yana haɗa IGBT don ƙwanƙwasa birki mai ƙarfi. Lokacin da rikice-rikicen grid na wucin gadi ya haifar da haɓaka cikin sauri a cikin ƙarfin haɗin haɗin DC, DB IGBT yana gudanar da sauri, yana watsar da wuce gona da iri da aka adana a cikin mahaɗin haɗin haɗin DC azaman zafi ta hanyar babban mai tsayayyar wuta ta waje (Top Dynamic Brake Resistor). Wannan yana kare haɗin haɗin haɗin DC da na'urori masu canzawa daga lalacewa fiye da ƙarfin lantarki.
2.3 Mahimman Bayanan Sigina da Kariya
Tsarin ba wai kawai yana aiwatar da jujjuya wutar lantarki ba har ma yana mu'amala tare da allunan dubawa na matakin sama (AEBI/AEDB) don samar da musaya na lokaci-lokaci don waɗannan mahimman kariya da siginonin sa ido:
Ganewar Desaturation : Yana sa ido kan wutar lantarki na IGBT Collector-emitter (Vce) don tantance ko IGBT ya fita daga yankin jikewa saboda yawan wuce gona da iri, yana aiki a matsayin mafi mahimmancin hanyar kariyar gajeriyar kewayawa.
Kulawa da Juyin Halitta : Yana sa ido kan wutar lantarki a cikin tsarin juzu'i don tantance ko yanayin halin yanzu ya wuce amintattun ƙofa.
Adadin Canji na Yanzu Yana Kulawa : Yana lura da ƙimar canjin halin yanzu (di/dt) ta hanyar ƙarfin lantarki don ganowa da kariya daga wuce gona da iri na yanzu, yana hana lalacewar na'urar.
Zazzabi da Feedback Voltage : Yana aiki tare da da'irori masu sarrafa wutar lantarki (VCO) don samar da keɓaɓɓen siginar samfur don yanayin halin yanzu, wutar lantarki ta layi-zuwa-layi, da ƙarfin haɗin kai na DC, yana ba da damar ƙididdige madaidaicin madauki ta allon Multiple Application Converter Control (MACC).
3. Tsarin Injini da Tsara Tsare-tsare
IS200AEBMG1A yana fasalta ƙaƙƙarfan tsari mai haɗaɗɗiyar injuna wanda aka ƙera don babban abin dogaro a cikin mahallin nacelle:
3.1 Gine-ginen Gine-gine Mai Sanyi Mai Ruwa
Jigon tsarin yana amfani da ingantaccen ƙirar sabulun ruwa mai sanyaya ruwa. Modulolin IGBT suna ɗaure zuwa saman heatsink tare da sukurori, tare da man shafawa na musamman da aka yi amfani da su a tsakanin don rage juriya ta thermal. Tashoshin kwarara na ciki na heatsink suna haɗawa da famfo ta tsayawa ta hoses rarraba masu sanyaya a saman majalisar. Mabuɗin Bayani :
A ƙasa da 27 ° C, bawul ɗin kula da thermostatic yana ƙetare mai sanyaya baya zuwa famfo; lokacin da ruwan zafi ya tashi sama da 36°C, bawul ɗin yana buɗewa gabaɗaya, yana jagorantar mai sanyaya zuwa na'urorin musayar zafi na waje-zuwa-ruwa don ƙi zafi.
Na'urorin haɗi mai sauri na sama da na ƙasa akan tsarin lokaci-ɗaya ana kiyaye su tare da ƙwanƙwasa shuɗi na musamman. Lokacin cire haɗin, dole ne a kula da amfani da masu yankan waya don snick ƙuƙuman don guje wa lalata bututun.
3.2 Haɗin Wutar Lantarki
Abubuwan haɗin wutar lantarki na module ɗin sun kasu kashi na sama da ƙasa:
Babban (Grid Side) : Yana haɗi zuwa Layin AC Bus-aikin, yana ciyar da jujjuyawar wutar lantarki a cikin grid.
Ƙananan (Generator Side) : Yana haɗi zuwa Generator AC Bus-aiki, yana karɓar ikon AC mai canzawa daga janareta.
Tsakiya (DC Side) : Haɗa zuwa bankin capacitor na DC ta hanyar bas ɗin DC a bayan ƙirar.
Sarrafa da Kariya : Ƙofofin IGBT da sigina na taimako suna haɗawa da allunan dabaru na sama-sama ta hanyar masu haɗa filogi (yawanci saiti 4). Dole ne a cire haɗin duk matosai kafin cire tsarin.
3.3 Haɗin Birki Mai Sauƙi
A cikin tsari na yau da kullun na Zaren 1 zuwa 4, tsarin Phase A yana ɗaukar ƙarin aikin birki mai ƙarfi. An gyara ƙarin tsarin AEBM zuwa bayan firam ɗin heatsink don tuƙi mai tsinke birki. Wannan yana nufin tsarin maye gurbin tsarin na zamani A ya fi rikitarwa, sau da yawa yana buƙatar cirewa ko canjawa na tsarin B na tsakiya don samun dama ga matosai na baya.
4. Sarrafa da Ƙwararren Ƙwararru
IS200AEBMG1A ba ta da hankali sosai; yana da 'm' duk da haka yana da matuƙar kulawa da aiwatar da aiwatar da wutar lantarki da naúrar ra'ayi. Duk bayanan sa sun dogara ne da babban allo na MACC mai canza zaren da kuma allon dubawar AEBI/AEDB.
4.1 Hanyoyin Kariya Kuskure
Software na sarrafa GE yana aiwatar da tsauraran hanyoyin kariya:
Kariya-Level Kariya : Hukumar AEBI/AEDB kai tsaye tana toshe bugun PWM a matakin microsecond ta hanyar tattara wutar lantarki ta Vce, ta cimma kariyar gajeriyar kewayawa ba tare da jinkirin software ba.
Kariya-Level Kariya : Hukumar MACC tana karanta siginar martani ta hanyar FPGA, tana haifar da ƙararrawa ko umarnin tafiya. Misali, idan zafin mahaɗar IGBT da aka gano ya wuce iyaka amma ba gajeriyar da'ira ba ta faru, ana ƙara ƙararrawa don lalata wutar lantarki da farko; idan yanayin ya tsananta, ana aiwatar da rufe tafiya.
4.2 Kula da Ayyukan Kan layi
Yin amfani da aikace-aikacen GE's ToolboxST , ma'aikatan kulawa za su iya dawo da zane-zanen toshe bayanai na lokaci-lokaci daidai da tsarin lokaci. Daga cikin su, keɓaɓɓen jadawali na IGBT Baseplate Temperature Trend shine mabuɗin don tantance lafiyar tsarin. A ƙarƙashin nau'i ɗaya da yanayin sanyaya, idan yanayin yanayin yanayi ɗaya ya bambanta da sauran, sau da yawa yana nuna busasshen man mai mai zafi, ƙaramin toshewar bututu mai sanyaya, ko lalata juriya na ciki na IGBT. Takardun yana jaddada cewa dole ne mutum ya tabbatar da kwararar sanyi na yau da kullun kafin a kammala cewa tsarin da kansa ba shi da kyau.
5. Dabarun Kulawa da Sauyawa
GE ta yi amfani da dabarun gyara 'Layin Replaceable Unit (LRU)' Don tsarin juzu'in wutar lantarki, ba a yin gyaran ɓangaren matakin allo; a maimakon haka, an maye gurbin dukan tsarin.
5.1 Tabbatar da Laifi
Takaddun sun fito fili suna bayyana manyan halaye da yawa waɗanda ke ba da umarnin maye gurbin tsarin:
Kasawar Bala'i : fashewar IGBT ko fashewar casing. A wannan yanayin, ba lallai ba ne kawai don maye gurbin tsarin amma kuma don bincikar lalacewa ta biyu ga bankunan capacitor da ke kewaye da su, yadudduka na bas (bincika zanen insulation na Formex don lalacewa) wanda carbonized / karfe foda ya haifar.
Maimaita Laifin Desaturation : Ba ta hanyar rudani na grid na waje ba amma ta asarar iyawar gajeriyar kewayawa a cikin na'urar.
Rashin Gwajin Kwayoyin Halitta : Ba za a iya wucewa ta kan layi 'Gwajin Kwayoyin cuta' ba, yana tabbatar da rashin daidaituwa a cikin kewayawa ko kewayawa.
Yanayin zafin da ba a fayyace ba : Duk da kwararar sanyi na yau da kullun, farantin gindi ko karatun zafin jiki a sarari ba su da kyau.
5.2 Maɓalli Matakan Maye gurbin
Sashe na 10.1.4 na takaddun yana ƙulla ƙaƙƙarfan ƙa'idodin tsari don maye gurbin tsarin IS200AEBMG1A:
Ayyukan Magudanar ruwa : Ba lallai ba ne don cika magudanar sanyaya. Madadin haka, ana aiwatar da hanyar 'Drain Back to Reservoir'. Buɗe bawul ɗin huɗa na hannu a saman majalisar yana bawa mai sanyaya a cikin bututun dawowa damar komawa cikin tafki da nauyi har sai matakin ruwa ya faɗi ƙasa da tsayin ƙirar zamani, ta yadda za'a sami cire haɗin 'free-drip'.
Tightening Torque : Lokacin shigar da sabon tsari, dole ne a ƙara matsawa bas ɗin bas ɗin DC a cikin wucewa uku (6.3 Nm -> 12.7 Nm -> 19 Nm / 168 in-lb na ƙarshe). Nan da nan bayan haka, dole ne a zana alamun ƙwanƙwasa ƙwanƙwasa a cikin kusoshi/washer ta amfani da alamar dindindin. Motocin bas ɗin AC kuma suna bin ƙimar juzu'i na 19 Nm.
Shigar da Manne : Dole ne a murƙushe matse ruwan shuɗi da ƙarfi ta amfani da filaye na musamman har sai zoben ƙarfe ya kusan taɓawa. Ba dole ba ne a danne shi (don hana yankan jaket ɗin shuɗi na tiyo) kuma ba a kwance ba (don hana ƙyalli mai ƙarfi).
Gwajin Leak : Bayan maye gurbin, dole ne a kunna famfo mai sanyaya ta amfani da ƙarfin taimako na 400V kawai, ba tare da ƙarfafa ƙarfin lantarki ba (Gwajin Coolant Leak Test). Dole ne a duba haɗin gwiwa don ɗigogi; Ana iya dawo da duk wutar lantarki kawai bayan an tabbatar da zubar da sifili.
