Chitima chehigh-speed maglev chinoshanda muShanghai chitima cheTR08 maglev chakatorwa kubva kuGermany, chinoshandisa mota yakareba-stator linear synchronous motor uye inogara-ikozvino conduction levitation system. Yayo traction simba rekupa sisitimu inoratidzwa muMufananidzo 1, uye ine zvikamu zvikuru senge yakakwira-voltage transformer (110kv/20kv), inoshandura shanduko, inoshandura inopinza, inverter, uye inobuda transformer.
Simba rekudhonza magetsi rechitima che maglev rinoshandurwa kubva pa 110kv grid voltage kuenda ku 20kv kuburikidza ne high-voltage transformer, yozoshandurwa kuita DC voltage ye ± 2500v ne transformer inopinza uye inoshandura inopinza. Iyo DC voltage kubva paDC link inoshandurwa kuita matatu-phase AC simba ine inosiyana frequency (0~300Hz), inoshanduka amplitude (0 ~ × 4.3kv), uye inogadziriswa chikamu angle (0~360 °) nenhatu-chikamu chetatu. -point inverter.Iyo traction converter yechitima che maglev ine maitiro maviri ekushanda:
(1) Iyo yakananga kubuda modhi ye inverter pulse wide modulation ndiyo inobuda modhi kana mota ichishanda pane yakaderera frequency, ine switching frequency ye0 ~ 70Hz. Panguva ino, seti mbiri dzematatu-point inverters dzakabatanidzwa mukufanana, uye inobuda inobatanidzwa kuburikidza nekutanga mhepo yeinobuda transformer sezvakaratidzwa mumufananidzo 1. Panguva ino, iyo yekutanga mhepo yeinobuda transformer yakaenzana nea parallel balancing reactor, uye zvakare inoita basa rekusefa.
(2) Transformer yekubuda modhi ndiyo yekubuda modhi kana mota ichishanda pamhepo yakakwira, ine switching frequency ye30Hz ~ 300Hz. Panguva ino, iwo maviri seti emainverters mune main traction converter akabatana munhevedzano kune yekutanga divi reinobuda transformer, uye inobuda inobuda mushure mekunge inobuda transformer yawedzera voltage.
EFD transformer EI transformer PQ transformer
3.1 Input converter
Iyo yepamberi nhanho yeinoshandura inoshandura ine yakakwira-voltage transformer uye inopinza transformer. Iyo yekupinza transformer ine maviri ekugadzirisa anoshandura, ayo basa nderekudzikisa yakakwira-voltage grid voltage kuburikidza neyechipiri transformer uye wozoitumira kune inoshandura inoshandura. Kune mahombe-akakwira-voltage rectifier matransformer, kuitira kuti uvandudze kugadzirisa, maviri seti e6-pulse rectifier mabhiriji anoshandiswa. Seti yega yega yevanogadzirisa shandurudzo inofambiswa nemaseti maviri ematatu-pase windings, one y junction uye one d junction. Iyo static inoshandura sisitimu inotora hurongwa hwematatu-chikamu matatu-anotenderedza mashanduri, ayo akabatana kuti agadzire iyo y/y, d boka rectifier transformer chirongwa chinoratidzwa muMufananidzo 2 kuburikidza nekubatanidza kwakatemwa kwega kwega. Zvayakanakira zvikuru ndezvi:
(1) Idiki diki rekuchengetedza, zvakanyanya hupfumi;
(2) Diki imwe chete chiyero, nyore kuzadzisa zvinodiwa zvekufambisa zvehukuru hwemudziyo;
(3) Iwo matatu mhepo inotenderera inogona kurongeka pane imwechete yakakosha mbiru, iyo inobatsira kuderedza harmonic kurasikirwa kweshanduko.
Kuti udzore iyo DC yekubatanidza voltage yedunhu repakati uye kuderedza gidhi-parutivi kusimuka, imwe neimwe inogadzirisa sisitimu inoumbwa nenhanhatu-pulse matatu-chikamu chakanyatsodzora chadzoresa bhiriji uye matanhatu-pulse matatu-chikamu chisingadzoreki chidzoreso bhiriji. munhevedzano, sezvakaratidzwa muMufananidzo 2. Nenzira iyi, mapoka maviri ekugadzirisa akabatanidzwa mumutsara, uye nzvimbo yepakati inogadziriswa kuburikidza nekupikisa kwepamusoro (sezvinoratidzwa mumufananidzo 1), zvichiita matatu-angangoita epakati DC link. . Iyo voltage yeDC link inodzoreka, kubva pa2 × 1500V kusvika 2 × 2500V, uye yakayerwa ikozvino i3200A. Kuti uwane yakatsetseka DC ikozvino, inotsvedza reactor yakabatana munhevedzano muyepakati dunhu. Panguva imwecheteyo, kuitira kudzivirira rectifier bhiriji uye DC link kubva overvoltage, DC side overvoltage dziviriro inogamuchirwa. MuDC yekubatanidza yepakati dunhu, kune ma thyristors uye akakwira-simba resistors ane discharge dziviriro seDC side absorption zvishandiso kudzvanyirira overvoltage. Mukuwedzera, iyo yepakati poindi yeDC link yedunhu repakati inodzikwa kuburikidza nekudzivirira kwekudzivirira uye ine chiratidziro chepasi.
3.2 Traction inverter
(1) Inverter chimiro
Chimiro chechikamu chimwe munhatu-phase inverter yeShanghai Maglev Chitima inoratidzwa muMufananidzo 3. Iyo huru chubhu inotora GTO yakazara-control kifaa. Dunhu guru rinotora maviri machubhu makuru akateedzana ane clamping diode pakati. Dunhu iri rinonziwo matatu-poinzi (kana matatu-nhanho midpoint yakamisikidzwa) inverter. Izvi zvinogona kuderedza iyo huru chubhu inomira voltage nehafu. Panguva imwecheteyo, pasi peiyo yakafanana switching frequency uye control mode, maharmonics emagetsi ayo anobuda kana azvino ari mashoma pane aya maviri-level, uye yakajairika-modhi voltage inogadzirwa neinobuda voltage pamagumo emota zvakare ishoma. , iyo inobatsira kuwedzera hupenyu hwebasa remota.
Iwo mana machubhu makuru ega ega ega bhiriji ruoko ane matatu akasiyana pa-off musanganiswa, uye anoburitsa akasiyana mavoltages zvichiteerana (ona Tafura 1). Iyo peak voltage yeGTO huru i4.5kV, uye iyo yepamusoro ikozvino i4.3ka. Iyo inverter mitatu-inoda kuti iyo huru V1 neV4 haigone kuvhurwa panguva imwe chete, uye mapurusi ekudzora eV1 neV3, V2 neV4 anopesana. Pamusoro pezvo, shanduko huru iri pamusoro pa-off inofanirwa kuenderana nemusimboti wekutanga kubva uye woenderera.
Iyo mitatu-nhanho inverter inogadzirwa pahwaro hweiyo maviri-level inverter. Iko kuiswa kweiyo yakakura kudzora tekinoroji yeaviri-level inverter mu-nhatu-level inverter yakagadzira nzira dzakasiyana siyana dzekudzora inverter. Parizvino, nzira dzakakura dzekutonga dzinoshandiswa kune matatu-level inverters ndeidzi: single pulse control nzira, yepamusoro uye yakaderera dual modulation wave SPWM yekudzora nzira, 120 ° conduction PWM yekudzora nzira, 90 ° chikamu chakadzika PWM yekudzora nzira, kwayakarerekera poindi inogona kutsauka. kudzvinyirira PWM kudzora nzira, kushandura frequency yakakwana yePWM yekudzora nzira, chaiyo yakaderera-yakarongeka harmonic elimination nzira (SHEPWM), matatu-level inverter voltage space vector control nzira (SVPWM) uye kwayakarerekera pfungwa inogona kutsauka kudzvinyirira voltage space vector control nzira [2,3 ].
(2) GTO drive circuit
High-power GTO drive circuit inofanira kutanga yagadzirisa matambudziko ekuzviparadzanisa uye anti-kupindira. Iyo inokonzeresa pulse chiratidzo cheGTO mune main traction inverter yeShanghai Maglev Chitima chinofambiswa neoptical fiber tambo, saka matambudziko ekuzviparadzanisa uye anti-kupindira anogadziriswa, nekudaro kuve nechokwadi chechokwadi cheGTO chinokonzeresa pulse uye zvisina kunanga kuve nechokwadi chekutyaira kweMaglev. Chitima. Uye zvakare, kiyi yekuti iyo yepamusoro-simba GTO drive wedunhu inogona kushanda kazhinji iri mumagetsi. Iyo amplitude yeGTO gedhi inokonzeresa pulse inofanirwa kunge yakakwira zvakaringana, uye inotungamira mupendero unofanirwa kuve wakakwirisa, nepo mupendero wekutevera uchifanirwa kunge wakapfava. Kuti usangane nechinodiwa ichi, gedhi rinotyaira magetsi eGTO mune main traction inverter yeMaglev Chitima i45V/27A, uye inoteedzera kumucheto chiratidzo uye voltage siginecha yeGTO trigger pulse inodzoserwa kukudzora system. Uye zvakare, iyo huru traction inverter yeShanghai Maglev Chitima inotora dzakasiyana siyana dziviriro: overvoltage chengetedzo yebrake circuit breaker, overcurrent protection current limit, pulse interruption uye kuona pasi pasi.
(3) Kutora dunhu
Kune akawanda absorption maseketi eGTO. Dunhu rekunyudza rematatu-nhanho main traction inverter yeShanghai Maglev Chitima inoratidzwa muMufananidzo 3. Dunhu rekunyudza rinofanira kuona kuti di/dt uye du/dt yeGTO haipfuure iyo yakatsanangurwa inotenderwa kukosha kana iri. kushanda. Nenzira iyi, dunhu rekunyura reGTO rinofanira kunge riine inductor uye capacitor C. Mumufananidzo 3, inductors L1, L2 uye GTO yakabatana mumutsara kudzikamisa di/dt yeGTO. Iyo diodes D11, D12, iyo resistor R1 uye inductor L1 inoumba simba rekuburitsa redunhu reinductor pacharo. Iyo capacitor C11 neC12 inoshandiswa kudzikamisa du/dt yeGTO, uye diode D12 uye D13 inoumba simba rekuburitsa redunhu recapacitor. Kuenzaniswa neRCD absorption circuit, iyo iri pamusoro inobata dunhu inowedzera capacitor yakakura C12, saka kutendeuka-kubvisa capacitor C11 hafu yehuwandu hwehuwandu hweRCD absorption circuit, saka kurasikirwa kunoderedzwawo nehafu; panguva imwecheteyo, iyo capacitor C12 inotamba voltage clamping basa, iro rinoshandiswa kudzvanya-kudzima overvoltage yeGTO. Kune 1500kva inverter, kurasikirwa kweiyi dunhu rekutora kwakada kufanana neiyo asymmetric absorption wedunhu.
ER Type Transformer Coupling mhando transformer 5V-36V Ferrite Core Transformer
4 Mhedziso
Iyo yekudhonza magetsi system yeShanghai yakakwira-kumhanya maglev chitima ine zvinotevera maitiro:
(1) Inotora yakakwira-kumhanya yakajairwa mutsara mutsara mota. Iyo yese traction simba rekupa system inoiswa pasi uye haina kuganhurirwa nenzvimbo yemuviri wemotokari, iyo inoenderana neiyo inoshanda-nhanho nzira yekupa magetsi matatu;
(2) Inotora nzvimbo isina kwayakarerekera yakasungirirwa matatu-level converter tekinoroji yakakodzera kune yakakwirira-voltage uye yakakwirira-simba nguva, ichidzivirira yakananga nhevedzano yekubatanidza yeGTO thyristors, kuitira kuti huwandu hwemagetsi emagetsi emagetsi akwanise kushandiswa zvizere;
(3) Maseti maviri emabhiriji anogadziriswa 12-pulse rectifier anoshandiswa mune inoshandura inoshandura, iyo isingangodzikisi harmonics uye kupindira, asi zvakare inodzvinyirira kutsauka kweiyo midpoint inogona;
(4) Thyristors uye GTOs vanoshandisa optical fiber tambo kuendesa pulse masaini, ane yakakwira anti-kupindira kuita. Iyo magetsi uye traction control system ndiyo imwe yemakiyi ekudzora kushanda kwakachengeteka uye kwakagadzikana kwezvitima zvemaglev. Nheyo yayo uye chimiro chinoda kumwe kutsvagisa nekuongorora.
Zhongshan XuanGe Electronics Co., Ltd. inogadzira inyanzvi muR&D, kugadzira uye kutengesa.yakakwirira uye yakaderera frequency transformers, inductorsuyeLED mutyairi magetsi magetsi.
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Nguva yekutumira: May-30-2024