Lub high-speed maglev tsheb ciav hlau ua nyob rau hauv Shanghai yog TR08 maglev tsheb ciav hlau los ntawm lub teb chaws Yelemees, uas siv ib tug ntev-stator linear synchronous lub cev muaj zog thiab ib tug tas li-tam sim no conduction levitation system. Nws cov khoom siv hluav taws xob traction tau pom nyob rau hauv daim duab 1, thiab muaj cov khoom tseem ceeb xws li lub tshuab hluav taws xob siab (110kv / 20kv), cov khoom siv hluav taws xob, cov khoom siv hluav taws xob, lub tshuab hluav taws xob, thiab cov khoom siv hluav taws xob.
Lub traction fais fab mov system ntawm lub tsheb ciav hlau maglev yog hloov los ntawm 110kv daim phiaj voltage mus rau 20kv los ntawm high-voltage transformer, thiab ces hloov mus rau ib tug DC voltage ntawm ± 2500v los ntawm cov input transformer thiab cov input converter. DC voltage los ntawm DC txuas yog hloov mus rau hauv peb-theem AC fais fab nrog qhov sib txawv zaus (0 ~ 300Hz), qhov sib txawv ntawm qhov amplitude (0 ~ 4.3kv), thiab lub kaum sab xis adjustable (0 ~ 360 °) los ntawm peb theem peb - point inverter.Lub traction converter ntawm lub tsheb ciav hlau maglev muaj ob hom kev ua haujlwm:
(1) Hom tso zis ncaj qha ntawm lub inverter pulse width modulation yog cov zis hom thaum lub cev muaj zog ua haujlwm ntawm qhov tsawg zaus, nrog rau qhov hloov pauv ntawm 0 ~ 70Hz. Nyob rau lub sijhawm no, ob pawg ntawm peb-point inverters txuas nrog nyob rau hauv parallel, thiab cov zis txuas nrog los ntawm thawj winding ntawm cov zis transformer raws li qhia hauv daim duab 1. Lub sijhawm no, thawj winding ntawm cov zis transformer yog sib npaug rau ib parallel balancing reactor, thiab tseem ua lub luag haujlwm lim dej.
(2) Transformer tso zis hom yog cov zis hom thaum lub cev muaj zog ua hauj lwm ntawm high zaus, nrog ib tug hloov zaus ntawm 30Hz ~ 300Hz. Lub sijhawm no, ob pawg ntawm inverters nyob rau hauv lub ntsiab traction converter txuas nrog hauv series mus rau thawj sab ntawm cov zis transformer, thiab cov zis yog tso tawm tom qab cov zis transformer boosts lub voltage.
Tom ntej: EFD transformer EI transformer muaj Tom ntej: PQ transformer
3.1 Input converter
Nyob rau hauv pem hauv ntej ntawm lub input converter muaj ib tug high-voltage transformer thiab ib tug input transformer. Lub input transformer muaj ob lub rectifier transformers, uas nws lub luag haujlwm yog los txo cov hluav taws xob hluav taws xob hluav taws xob los ntawm qhov hloov pauv theem nrab thiab xa mus rau lub input converter. Rau qhov loj-muaj peev xwm high-voltage rectifier transformers, txhawm rau txhim kho cov kev ua kom zoo dua qub, siv ob txheej ntawm 6-pulse rectifier txuas hniav. Txhua txheej ntawm rectifier transformers yog powered los ntawm ob pawg ntawm peb-theem windings, ib y junction thiab ib tug d junction. Lub tshuab hloov hluav taws xob zoo li qub tau txais cov tswv yim ntawm peb theem ib zaug peb-winding transformers, uas txuas nrog rau daim ntawv y / y, d pawg rectifier transformer scheme qhia hauv daim duab 2 los ntawm kev sib txuas ntawm txhua qhov winding. Nws lub ntsiab zoo yog:
(1) Lub peev xwm me me, kev lag luam ntau dua;
(2) Lub peev xwm me me, yooj yim dua kom ua tau raws li kev thauj mus los rau cov cuab yeej loj;
(3) Peb qhov windings tuaj yeem npaj rau ntawm tib lub hauv paus tseem ceeb, uas yuav pab txo qis kev sib haum xeeb ntawm lub transformer.
Txhawm rau tswj cov DC txuas hluav taws xob ntawm qhov nruab nrab Circuit Court thiab txo cov kab sib chaws-sab excitation, txhua lub rectifier ntawm lub kaw lus yog tsim los ntawm 6-pulse peb-theem tswj tag nrho rectifier choj thiab ib tug rau-mem tes peb-theem uncontrolled rectifier choj. nyob rau hauv series, raws li qhia nyob rau hauv daim duab 2. Nyob rau hauv no txoj kev, ob txheej ntawm rectifiers yog txuas nrog nyob rau hauv series, thiab qhov nruab nrab taw tes yog grounded los ntawm ib tug siab tsis kam (raws li qhia nyob rau hauv daim duab 1), ua ib tug peb-muaj peev xwm intermediate circuit DC txuas. . Qhov voltage ntawm DC txuas yog tswj tau, xws li 2 × 1500V rau 2 × 2500V, thiab cov ntsuas tam sim no yog 3200A. Txhawm rau kom tau txais DC tam sim no, lub reactor smoothing txuas nrog hauv cov kab hauv nruab nrab ntawm lub voj voog. Nyob rau tib lub sijhawm, txhawm rau tiv thaiv tus choj rectifier thiab DC txuas ntawm overvoltage, DC sab overvoltage tiv thaiv raug saws. Nyob rau hauv DC txuas nruab nrab Circuit Court, muaj thyristors thiab high-power resistors nrog kev tiv thaiv tawm raws li DC sab nqus cov khoom siv los tiv thaiv overvoltage. Tsis tas li ntawd, lub ntsiab lus nruab nrab ntawm DC txuas ntawm qhov nruab nrab Circuit Court yog grounded los ntawm kev tiv thaiv kev tiv thaiv siab thiab muaj qhov ua txhaum hauv av.
3.2 Traction inverter
(1) Inverter qauv
Cov qauv ntawm ib theem nyob rau hauv peb-theem inverter ntawm Shanghai Maglev Tsheb ciav hlau yog qhia nyob rau hauv daim duab 3. Lub ntsiab raj txais GTO tag nrho-tswj ntaus ntawv. Lub ntsiab Circuit Court txais ob lub ntsiab tub hauv series nrog ib tug clamping diode ntawm lub midpoint. Qhov Circuit Court no tseem hu ua peb-point (los yog peb-theem midpoint embedded) inverter. Qhov no tuaj yeem txo cov raj tseem ceeb tiv taus hluav taws xob los ntawm ib nrab. Nyob rau tib lub sijhawm, nyob rau hauv tib lub sijhawm hloov pauv thiab kev tswj hwm, qhov sib haum xeeb ntawm nws cov zis hluav taws xob lossis tam sim no tsawg dua li ntawm ob theem, thiab qhov sib txawv-hom voltage tsim los ntawm cov zis voltage ntawm lub cev muaj zog kawg kuj tseem tsawg dua. , uas muaj txiaj ntsig zoo rau kev ua haujlwm ntev ntawm lub cev muaj zog.
Plaub lub ntsiab ntawm txhua theem choj caj npab muaj peb qhov sib txawv ntawm kev sib txuas, thiab tso tawm qhov sib txawv ntawm qhov sib txawv (saib Daim duab 1). Lub ncov voltage ntawm lub ntsiab GTO yog 4.5kV, thiab lub ncov tam sim no yog 4.3ka. Peb lub ntsiab lus inverter xav kom lub ntsiab V1 thiab V4 tsis tuaj yeem tig rau tib lub sijhawm, thiab kev tswj cov pulses ntawm V1 thiab V3, V2 thiab V4 yog qhov sib txawv. Tsis tas li ntawd, lub ntsiab lus tseem ceeb ntawm kev hloov pauv yuav tsum ua raws li lub hauv paus ntsiab lus ntawm thawj zaug tawm thiab tom qab ntawd.
Peb theem inverter yog tsim los ntawm lub hauv paus ntawm ob-theem inverter. Kev taw qhia txog kev paub txog kev tswj hwm thev naus laus zis ntawm ob-theem inverter rau hauv peb-theem inverter tau tsim ntau yam ntawm inverter tswj cov tswv yim. Tam sim no, cov tswv yim tswj kev paub ntau dua siv rau peb-theem inverters yog: tib txoj kev tswj cov mem tes, sab sauv thiab qis dual kev hloov kho yoj SPWM tswj txoj kev, 120 ° kev coj PWM tswj txoj kev, 90 ° theem staggered PWM tswj txoj kev, nruab nrab taw tes muaj peev xwm sib txawv. suppression PWM control method, switching zaus optimal PWM control method, specific low-order harmonic elimination method (SHEPWM), peb-theem inverter voltage qhov chaw vector tswj txoj kev (SVPWM) thiab nruab nrab taw tes muaj peev xwm deviation suppression voltage chaw vector tswj txoj kev [2,3 ].
(2) GTO tsav Circuit Court
High-power GTO tsav Circuit Court yuav tsum xub daws cov teeb meem ntawm kev sib cais thiab tiv thaiv kev cuam tshuam. Lub teeb liab mem tes ntawm GTO nyob rau hauv lub ntsiab traction inverter ntawm Shanghai Maglev Tsheb ciav hlau yog kis los ntawm optical fiber cable, yog li cov teeb meem ntawm kev sib cais thiab kev cuam tshuam los ntawm kev cuam tshuam, yog li ua kom ntseeg tau qhov tseeb ntawm GTO trigger pulse thiab indirectly ua kom muaj kev nyab xeeb ntawm kev tsav tsheb ntawm Maglev. Tsheb ciav hlau. Tsis tas li ntawd, tus yuam sij rau seb lub zog siab GTO tsav Circuit Court tuaj yeem ua haujlwm ib txwm nyob hauv cov khoom siv hluav taws xob. Lub amplitude ntawm GTO rooj vag trigger mem tes yuav tsum siab txaus, thiab nws cov thawj ntug yuav tsum yog ntxhab, thaum lub ntug ntawm ntug yuav tsum softer. Txhawm rau ua kom tau raws li qhov yuav tsum tau ua, lub rooj vag tsav lub zog ntawm GTO hauv lub ntsiab traction inverter ntawm Maglev Tsheb ciav hlau yog 45V / 27A, thiab cov teeb liab ntug thiab qhov hluav taws xob ntawm GTO txhais tes mem tes raug xa rov qab mus rau qhov kev tswj hwm. Tsis tas li ntawd, lub ntsiab traction inverter ntawm Shanghai Maglev Tsheb ciav hlau txais ntau yam kev tiv thaiv: kev tiv thaiv overvoltage ntawm nres Circuit Court breaker, overcurrent tiv thaiv tam sim no txwv, mem tes cuam tshuam thiab nrhiav kom pom hauv av.
(3) Absorption Circuit Court
GTO muaj ntau yam kev nqus Circuit Court. Kev nqus Circuit Court ntawm peb-theem lub ntsiab traction inverter ntawm Shanghai Maglev Tsheb ciav hlau yog qhia nyob rau hauv daim duab 3. Lub nqus Circuit Court yuav tsum xyuas kom meej tias lub di / dt thiab du / dt ntawm GTO tsis pub tshaj qhov tso cai qhov tseem ceeb thaum nws yog. ua haujlwm. Nyob rau hauv no txoj kev, lub nqus Circuit Court ntawm GTO yuav tsum muaj ib tug inductor thiab ib tug capacitor C. Nyob rau hauv daim duab 3, lub inductors L1, L2 thiab lub GTO yog txuas nyob rau hauv series los txwv lub di / dt ntawm lub GTO. Lub diodes D11, D12, resistor R1 thiab inductor L1 tsim lub zog tso tawm Circuit Court ntawm inductor nws tus kheej. Lub capacitors C11 thiab C12 yog siv los txwv du / dt ntawm GTO, thiab cov diodes D12 thiab D13 tsim lub zog tso tawm Circuit Court ntawm lub capacitor. Piv nrog rau RCD absorption Circuit Court, saum toj no absorption Circuit Court ntxiv ib tug loj capacitor C12, yog li lub turn-off absorption capacitor C11 yog ib nrab ntawm capacitance tus nqi ntawm RCD absorption circuit, yog li qhov poob kuj tseem txo los ntawm ib nrab; Nyob rau tib lub sij hawm, lub capacitor C12 plays lub luag hauj lwm voltage clamping, uas yog siv los suppress lub turn-off overvoltage ntawm GTO. Rau 1500kva inverter, qhov poob ntawm qhov nqus Circuit Court yog kwv yees tib yam li ntawm asymmetric absorption circuit.
ER Hom Transformer Coupling hom transformer 5V-36V Ferrite Core Transformer
4 Kev xaus
Lub traction fais fab mov system ntawm Shanghai high-speed maglev tsheb ciav hlau muaj cov yam ntxwv hauv qab no:
(1) Nws txais kev kub ceev cov pa linear synchronous lub cev muaj zog. Tag nrho cov khoom siv hluav taws xob traction tau muab tso rau hauv av thiab tsis txwv los ntawm qhov chaw ntawm lub tsheb lub cev, uas yog qhov tsim nyog rau txoj kev siv hluav taws xob peb-kauj ruam zoo tshaj plaws;
(2) Nws txais qhov nruab nrab taw tes clamped peb-theem converter tshuab haum rau high-voltage thiab high-power zaus, zam kev sib txuas ncaj qha ntawm GTO thyristors, kom lub peev xwm ntawm lub zog hluav taws xob hluav taws xob muaj peev xwm siv tau tag nrho;
(3) Ob txheej ntawm adjustable 12-pulse rectifier txuas hniav yog siv nyob rau hauv lub input converter, uas tsis tsuas yog txo harmonics thiab cuam tshuam, tab sis kuj suppresses lub deviation ntawm lub midpoint peev xwm;
(4) Thyristors thiab GTOs siv fiber ntau optical cables los xa cov cim mem tes, uas muaj kev cuam tshuam kev cuam tshuam. Lub hwj chim mov thiab traction tswj system yog ib qho ntawm cov yuam sij los tswj kev nyab xeeb thiab ruaj khov ntawm maglev tsheb ciav hlau. Nws lub hauv paus ntsiab lus thiab cov qauv xav tau kev tshawb fawb thiab kev tshuaj xyuas ntxiv.
Zhongshan XuanGe Electronics Co., Ltd. yog cov chaw tsim khoom tshwj xeeb hauv R & D, ntau lawm thiab muag khoom ntawmsiab thiab tsawg zaus transformers, inductorsthiabLED tsav tsheb fais fab khoom siv.
Lub tuam txhab originated nyob rau hauv Shenzhen, lub forefront ntawm Tuam Tshoj txoj kev hloov kho thiab qhib, thiab tau tsim nyob rau hauv 2009. Tau ntau xyoo, peb tau txuas ntxiv mus loj hlob thiab tsim. Los ntawm 2024, peb muaj 15 xyoo ntawm kev paub nyob rau hauv tsim high zaus transformers, thiab peb sophisticated kev tau ua XuanGe Electronics txaus siab rau ib tug zoo lub koob npe nrov nyob rau hauv domestic thiab txawv teb chaws kev lag luam.
Peb txais OEM thiab ODM xaj. Txawm koj xaivib yam khoom txheemlos ntawm peb cov catalog lossis nrhiav kev pab kho kom haum, thov koj xav tias dawb los tham txog koj cov kev xav tau nrog XuanGe, tus nqi yuav txaus siab rau koj.
William (General Sales Manager)
186 8873 0868 (Whats app / We-Chat)
E-Mail: sales@xuangedz.com
liwei202305@gmail.com
Post lub sij hawm: May-30-2024