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Shanghai High-speed Maglev Ground Traction Power Supply System

Terene ea lebelo le phahameng ea maglev e sebetsang Shanghai ke terene ea maglev ea TR08 e tsoang Jeremane, e sebelisang enjene e melang e telele e lekanang le enjene e tsamaeang ka nako e telele le sistimi e lulang e le teng hona joale. Sistimi ea eona ea phepelo ea motlakase e bonts'itsoe ho Setšoantšo sa 1, 'me e na le likarolo tse kholo tse kang transfoma ea matla a phahameng (110kv/20kv), sesebelisoa sa ho kenya letsoho, sesebelisoa sa ho kenya letsoho, se feto-fetohang le se hlahisang.

Sistimi ea phepelo ea motlakase ea terene ea maglev e fetoloa ho tloha ho 110kv grid voltage ho ea 20kv ka transfoma e matla haholo, ebe e fetoloa ho DC voltage ea ± 2500v ke transfoma e kenyang le sesebelisoa sa ho kenya. Matla a motlakase a DC a tsoang ho sehokelo sa DC a fetoloa matla a AC a mekhahlelo e meraro a nang le maqhubu a feto-fetohang (0~300Hz), amplitude e feto-fetohang (0 ~ × 4.3kv), le angle e feto-fetohang (0~360 °) ka mekhahlelo e meraro. - ntlha ea inverter.Transverter ea terene ea maglev e na le mekhoa e 'meli ea ho sebetsa:

(1) Mokhoa o tobileng oa phallo ea inverter pulse width modulation ke mokhoa oa ho hlahisa ha motlakase o sebetsa ka lebelo le tlaase, ka ho fetoha ha 0 ~ 70Hz. Ka nako ena, lihlopha tse peli tsa li-inverters tse tharo li kopantsoe ka mokhoa o ts'oanang, 'me tlhahiso e hokahane ka moea o ka sehloohong oa motlakase oa motlakase joalokaha ho bontšitsoe setšoantšong sa 1. Ka nako ena, moea o ka sehloohong oa motlakase oa lihlahisoa o lekana le a parallel balancing reactor, hape e bapala karolo ea ho sefa.
(2) Transformer output mode ke mokhoa oa tlhahiso ha motlakase o sebetsa ka maqhubu a phahameng, ka ho fetoha ha 30Hz ~ 300Hz. Ka nako ena, lihlopha tse peli tsa li-inverter tse ka har'a sesebelisoa se seholo sa traction li hokahane ka letoto ho ea lehlakoreng le ka sehloohong la sephetho sa motlakase, 'me tlhahiso e hlahisoa ka mor'a hore motlakase o nyolle motlakase.

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3.1 Input converter
Mokhahlelo o ka pele oa mochine o kenyang letsoho o na le mochine o phahameng oa motlakase le mochine oa ho kenya letsoho. Transformer ea ho kenya e na le li-transformer tse peli tsa rectifier, tseo mosebetsi oa tsona e leng ho fokotsa matla a marang-rang a phahameng ka ho fetisisa ka motlakase oa bobeli ebe o o romela ho mochine oa ho kenya letsoho. Bakeng sa li-transformer tse nang le matla a maholo a matla a matla, e le ho ntlafatsa katleho ea ho lokisa, ho sebelisoa lihlopha tse peli tsa marokho a 6-pulse rectifier. Sete e 'ngoe le e' ngoe ea li-transformer tse nchafatsang e tsamaisoa ke lihlopha tse peli tsa mekhahlelo e meraro, mateano a y le mateano a le mong. The static converter system e nka moralo oa li-transformer tse tharo tsa mekhahlelo e meraro, tse hokahantsoeng ho theha leano la y/y, d group rectifier transformer le bontšitsoeng ho Setšoantšo sa 2 ka khokahanyo e behiloeng ea leqhubu le leng le le leng. Melemo ea eona e ka sehloohong ke:

(1) Bokhoni bo fokolang, bo nang le chelete e ngata;

(2) Bophahamo bo nyane bo le bong, bo bonolo ho fihlela litlhoko tsa lipalangoang bakeng sa boholo ba sesebelisoa;

(3) Li-winding tse tharo li ka hlophisoa holim'a kholomo e le 'ngoe ea mantlha, e thusang ho fokotsa tahlehelo ea harmonic ea transformer.

E le ho laola motlakase oa khokahanyo ea DC oa potoloho e bohareng le ho fokotsa ho tsosoa ha marang-rang, mohlahlobi e mong le e mong oa sistimi e entsoe ka borokho bo hlophisitsoeng ka botlalo ba mekhahlelo e meraro le borokho bo sa laoleheng ba mekhahlelo e meraro. ka letoto, joalokaha ho bontšitsoe setšoantšong sa 2. Ka tsela ena, lihlopha tse peli tsa li-rectifiers li kopantsoe ka letoto, 'me ntlha e bohareng e thehiloe ka khanyetso e phahameng (joalokaha ho bontšitsoe setšoantšong sa 1), ho etsa sehokelo sa DC se nang le menyetla e meraro. . Matla a sehokelo sa DC a khona ho laoleha, ho tloha ho 2 × 1500V ho isa ho 2 × 2500V, 'me hona joale ho lekantsoe ke 3200A. E le hore u fumane motlakase o boreleli oa DC, mochine o boreleli o kopantsoe ka letoto la potoloho e bohareng. Ka nako e ts'oanang, e le ho thibela borokho ba rectifier le DC link ho tloha overvoltage, tšireletso ea DC side overvoltage e amoheloa. Sebakeng sa DC se hokahanyang potoloho ea bohareng, ho na le li-thyristors le li-resistors tse matla a phahameng tse nang le ts'ireletso ea ts'ireletso e le lisebelisoa tsa ho monya mahlakoreng a DC ho hatella overvoltage. Ho phaella moo, ntlha e bohareng ea khokahanyo ea DC ea potoloho e bohareng e thehiloe ka tšireletso e phahameng ea ho hanyetsa 'me e na le pontšo ea phoso ea fatše.

3.2 Sesebelisuoa sa motlakase
(1) Sebopeho sa inverter

Sebopeho sa karolo e le 'ngoe ho inverter ea mekhahlelo e meraro ea Terene ea Shanghai Maglev e bontšoa ho Setšoantšo sa 3. The tube e kholo e nka sesebelisoa sa GTO se laolang ka botlalo. Potoloho e kholo e nka li-tubes tse peli tse kholo ka letoto le nang le clamping diode bohareng. Potoloho ena e boetse e bitsoa inverter ea lintlha tse tharo (kapa tse tharo-level e kenyellelitsoe bohareng). Sena se ka fokotsa phaephe e kholo e mamellang motlakase ka halofo. Ka nako e ts'oanang, tlas'a mokhoa o tšoanang oa ho fetola maqhubu le mokhoa oa ho laola, li-harmonics tsa motlakase oa eona kapa oa hona joale o tlase ho feta oa mekhahlelo e 'meli,' me motlakase o tloaelehileng o hlahisoang ke motlakase o tsoang qetellong ea motlakase le oona o fokotsehile. , e leng molemo ho lelefatsa bophelo ba tšebeletso ea motlakase.
Li-tubes tse 'ne tse kholo tsa letsoho le leng le le leng la borokho li na le metsoako e meraro e fapaneng ea ho tima,' me li hlahisa li-voltages tse fapaneng ka ho latellana (sheba Lethathamo la 1). Matla a phahameng a GTO ke 4.5kV, 'me tlhōrō ea hona joale ke 4.3ka. Inverter ea lintlha tse tharo e hloka hore V1 e kholo le V4 e se ke ea buloa ka nako e le 'ngoe,' me maqhubu a taolo a V1 le V3, V2 le V4 a fapane. Ho phaella moo, phetoho e ka holimo e ka holimo e tlameha ho lumellana le molao-motheo oa ho tloha pele ebe ho ea pele.
Inverter ea maemo a mararo e ntlafatsoa motheong oa inverter ea maemo a mabeli. Kenyelletso ea thekenoloji ea taolo e butsoitseng ea inverter ea maemo a mabeli ho inverter ea maemo a mararo e thehile mekhoa e fapaneng ea ho laola inverter. Hona joale, mekhoa ea ho laola batho ba hōlileng ka ho fetisisa e sebelisoang bakeng sa li-inverters tsa maemo a mararo ke: mokhoa o le mong oa ho laola sekhahla, mokhoa oa ho laola maqhubu a SPWM a holimo le a tlaase a mabeli, mokhoa oa ho laola PWM oa 120 °, mokhoa oa ho laola PWM oa 90 °, mokhoa oa ho laola PWM o sa nke lehlakore. mokhoa oa ho laola PWM, mokhoa oa ho fetola mokhoa o nepahetseng oa ho laola PWM, mokhoa o khethehileng oa ho felisa li-harmonic (SHEPWM), mokhoa oa ho laola sebaka sa motlakase oa motlakase oa sebaka sa motlakase (SVPWM) le mokhoa o sa nke lehlakore oa ho kheloha mokhoa oa ho laola sebaka sa motlakase [2,3] ].

(2) GTO drive potoloho

Potoloho ea GTO e nang le matla a phahameng e tlameha ho qala ho rarolla mathata a ho itšehla thajana le ho hanyetsa tšitiso. The trigger pulse signal ea GTO inverter main traction ea Shanghai Maglev Train e fetisoa ke optical fiber cable, kahoo mathata a ho itšehla thajana le ho thibela ho kena-kenana a rarolloa, ka hona ho netefatsa ho nepahala ha GTO trigger pulse le ho netefatsa ka tsela e sa tobang polokeho ea ho khanna ea Maglev. Terene. Ho phaella moo, senotlolo sa hore na motlakase oa motlakase oa GTO o ka sebetsa ka tloaelo o itšetlehile ka matla a matla. Bophahamo ba phallo ea phallo ea liheke tsa GTO bo lokela ho ba holimo ka ho lekana, 'me moeli oa eona o ka pele o be moepa, ha moeli o latelang o lokela ho ba bonolo. Ho fihlela tlhokahalo ena, phepelo ea motlakase ea liheke tsa GTO ho inverter e kholo ea Maglev Train ke 45V/27A, 'me lets'oao le lets'oao le lets'oao la motlakase oa GTO trigger pulse li khutlisetsoa tsamaisong ea taolo. Ntle le moo, inverter ea mantlha ea Terene ea Maglev ea Shanghai e amohela litšireletso tse fapaneng: ts'ireletso ea overvoltage ea brake circuit breaker, moeli oa hajoale oa tšireletso, ho sitisoa ha pulse le ho lemoha phoso ea fatše.

(3) Potoloho ea ho monya

Ho na le li-circuits tse ngata tsa ho monya tsa GTO. Potoloho ea ho monya ea inverter e kholo ea maemo a mararo ea Terene ea Maglev ea Shanghai e bonts'itsoe ho Setšoantšo sa 3. Potoloho ea ho monya e tlameha ho etsa bonnete ba hore di/dt le du/dt tsa GTO ha li fete boleng bo boletsoeng bo lumelletsoeng ha e le teng. sebetsa. Ka tsela ena, potoloho ea ho monya ea GTO e tlameha ho ba le inductor le capacitor C. Setšoantšong sa 3, li-inductors L1, L2 le GTO li kopantsoe ka letoto ho fokotsa di/dt ea GTO. Li-diode D11, D12, resistor R1 le inductor L1 li theha potoloho ea matla a motlakase ka boeona. Li-capacitor C11 le C12 li sebelisetsoa ho fokotsa du/dt ea GTO, 'me diode D12 le D13 li etsa potoloho ea matla a motlakase ea capacitor. Ha ho bapisoa le RCD absorption circuit, potoloho e ka holimo ea ho monya e eketsa capacitor C12 e kholo, kahoo ho tima capacitor C11 ke halofo ea boleng ba capacitance ea potoloho ea RCD, kahoo tahlehelo e boetse e fokotsehile ka halofo; ka nako e ts'oanang, capacitor C12 e phetha karolo ea ho thibela motlakase, e sebelisetsoang ho hatella overvoltage ea ho tima ea GTO. Bakeng sa inverter ea 1500kva, tahlehelo ea potoloho ena ea ho monya e batla e tšoana le ea potoloho ea asymmetric absorption.

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       Mofuta oa ER Transformer                           Transformer ea mofuta oa coupling                         5V-36V Ferrite Core Transformer

4 Qetello
Sistimi ea phepelo ea motlakase ea terene ea lebelo le phahameng ea Shanghai e na le litšobotsi tse latelang:
(1) E sebelisa enjene e tloaelehileng e tsamaeang ka lebelo le holimo. Tsamaiso eohle ea phepelo ea motlakase e behoa fatše 'me ha e felle feela ke sebaka sa' mele oa koloi, e leng se loketseng mokhoa o sebetsang ka ho fetisisa oa mehato e meraro ea matla;
(2) E amohela ho se nke lehlakore ntlha clamped tse tharo-boemo converter thekenoloji loketseng bakeng sa maemo a phahameng-voltage le phahameng-matla, ho qoba ho toba letoto la kgokelo ya GTO thyristors, e le hore bokgoni ba matla a phahameng disebediswa tsa elektronike matla a ka sebelisoa ka botlalo;
(3) Lihlopha tse peli tsa marokho a 12-pulse rectifier li sebelisoa ho converter input, e sa fokotseng feela li-harmonics le ho kena-kenana, empa hape e hatella ho kheloha ha bokhoni ba midpoint;
4 Mokhoa oa ho laola phepelo ea motlakase le ho tsamaea ke e 'ngoe ea linotlolo tsa ho laola ts'ebetso e sireletsehileng le e tsitsitseng ea literene tsa maglev. Molao-motheo le sebopeho sa eona li hloka lipatlisiso le tlhahlobo e eketsehileng.

 

Zhongshan XuanGe Electronics Co., Ltd. ke moetsi ea sebetsanang le R&D, tlhahiso le thekiso eali-transformer tse phahameng le tse tlase, li-inductorsleLisebelisoa tsa motlakase tsa mokhanni oa LED.
Khampani e simolohile Shenzhen, e leng eona e ka pele-pele ea liphetoho le ho bula Chaena, 'me e thehiloe ka 2009. Ho theosa le lilemo, re tsoetse pele ho hola le ho ntlafala. Ka 2024, re na le boiphihlelo ba lilemo tse 15 ba ho hlahisa li-transformer tse phahameng, 'me boiphihlelo ba rona ba maemo a holimo bo entse hore XuanGe Electronics e natefeloe ke botumo bo botle mebarakeng ea lapeng le kantle ho naha.
Re amohela litaelo tsa OEM le ODM. Hore na o khethasehlahisoa se tloaelehilengho tsoa lethathamong la rona kapa u batle thuso ea ho itlhophisa, ka kopo ikutloe u lokolohile ho bua ka litlhoko tsa hau tsa theko le XuanGe, theko e tla u khotsofatsa.

William (Mookameli oa Kakaretso oa Thekiso)

186 8873 0868 (Whats app/We-Chat)

E-Mail: sales@xuangedz.com

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Nako ea poso: May-30-2024