Transformer e ka sehloohong ea sistimi ea ho tsamaisa motlakase oa leloala ke mochini o lokisang motlakase o nang le voltage ea 0.4/0.66/0.75 kV, 'me mojaro o moholo ke enjene e kholo ea DC.Hobane phetisetso ea matla le kabo ea sesebelisoa sa "extruder rectifier" hangata se sebelisa mefuta e 'meli ea theknoloji ea "pulse rectifier" e hlahisang palo e itseng ea pulse current (6N+1) ka likhato tse fapaneng ka lehlakoreng la "low-voltage", haholo-holo (6N). +1) ka lehlakoreng le phahameng la motlakase.12N+1) Bontša mokhoa oa ho lokisa pulse o le mong oa leshome le metso e 'meli.
Tšenyo ea li-harmonics tsa boenjiniere ba matla ho grid ea matla e ipapisitse le kotsi ea matla a sebetsang a harmonic ho mochini le lisebelisoa tse ka har'a marang-rang a matla, ke hore, motlakase o sebetsang oa harmonic o feta boemo boo mochini le lisebelisoa li ka bo jarang.Mokha oa phepelo ea motlakase o ikarabella bakeng sa matla a motlakase a sebetsang hona joale a marang-rang a phepelo ea motlakase, 'me moreki oa motlakase o ikarabella bakeng sa ho hlahisa maqhubu a matla a software ea sistimi.
Ho ea ka phihlelo ea boenjiniere ea mechine ea rona ea setso ea ho sebetsana le li-harmonics, mosebetsing, tsamaisong ea motlakase ea motlakase e tlaase ea mosebedisi, litaba tsa 5 tsa harmonic tsa hona joale li fihla ho 20% ~ 25%, ea 7 ea harmonic e fihla ho 8%, 'me hona joale ha harmonic e kenngoa ka har'a motlakase o phahameng Lintho tsa harmonic tsamaisong ea matla li eketseha ka potlako, tse bakang ho sotha ha waveform ea motlakase oa phepelo, ho eketsa tahlehelo ea lisebelisoa le lisebelisoa tsa matla, ho tlisa tšebeliso e eketsehileng ea matla, ho ama ts'ebetso e tloaelehileng ea tse ling. lisebelisoa tsa matla ka har'a marang-rang a matla, 'me e fokotsa boleng ba matla a marang-rang a matla., e amang ts'ireletso ea matla a marang-rang a matla le ho tlisa likotsi tsa ts'ireletso ts'ebetsong e sireletsehileng ea lisebelisoa.
Bakeng sa ho netefatsa ts'ebetso e tloaelehileng ea lisebelisoa, phepelo ea motlakase e tšepahalang le ho boloka matla a sistimi ea phepelo ea motlakase, ho hlokahala ho nka mehato ea tekheniki ho hatella matla a lisebelisoa le ho nahana ka matšeliso a matla a sebetsang a mantlha.Ho ea ka litekanyetso tsa boleng ba lihlahisoa tsa motlakase tse sebetsang ka har'a marang-rang a matla a naha ea heso le liphetho tsa lipatlisiso tsa saense tsa taolo ea pulse hona joale linaheng tse sa tšoaneng tsa lefats'e, lintlha tsa tekheniki tsa ho sefa ha motlakase ka tlase le matšeliso a matla li amoheloa, 'me li-loops tsa taolo ea filthara li ntse li le teng ka ho latellana. sete bakeng sa sebopeho sa maqhubu a pulse a bakoang ke rectifier ho sila le ho monya maqhubu a harmonic.Ntle le moo, e na le mesebetsi ea ho lefa moroalo oa mantlha oa reactive wave le ho boloka matla a motlakase.
Thepa ea anti-harmonic e hlahisoang ke Zhejiang Hongyan Electric Co., Ltd. e na le litšobotsi tsa phetoho e matla le mojaro.Le ha e ntse e ntlafatsa boleng ba matla, matla le ho boloka matla a marang-rang a matla, e ka boela ea ntlafatsa ts'epahalo ea ts'ebetso e akaretsang ea sistimi ea motlakase le ts'ebetso e ntle ea lisebelisoa, le ho fokotsa litšenyehelo tsa ts'ebetso le Ho fokotsa litšenyehelo tsa tlhokomelo ea lisebelisoa, ho lelefatsa lisebelisoa. bophelo, le ho tlisa melemo ea moruo e hlakileng ho basebelisi.
Li-mill rolling tsa DC hangata li sebelisa li-motor tsa DC, 'me matla a motlakase nakong ea ho koloka a tlase haholo, hangata a ka bang 0.7.E 'ngoe ea likarolo tsa eona tse kholo ke potoloho e khuts'oane ea ts'ebetso, lebelo le potlakileng, boima ba tšusumetso, le liphetoho tse kholo tse sa sebetseng.Li-squeezers tsa motlakase le tsona li ka baka ho feto-fetoha ho matla ha motlakase oa grid, ho etsa hore mabone le li-skrini tsa TV li hlenne, ho baka mokhathala oa pono le ho teneha.Ho phaella moo, li tla boela li ama ts'ebetso e boreleli ea likarolo tsa thyristor, lisebelisoa kapa lisebelisoa tsa tlhahiso, esita le ho baka likotsi tsa tšireletso.Matšeliso a kakaretso a banka ea capacitor ha a khone ho latela liphetoho tsa mojaro ka nako ea nnete ho boloka matšeliso a utloahalang.Lintlha tsa ho ikopanya le lisebelisoa tsa mechine li ameha ka lebaka la ho fetoha khafetsa, ho nang le tšusumetso e kholo ho marang-rang a matla.
DC rolling Mill e amohela phetiso ea motlakase ea theknoloji ea tokiso ea thyristor.Ho ea ka palo ea li-pulse tsa rectification, e ka aroloa ka 6-pulse rectification, 12-pulse ho 24-pulse.Ho phaella ho matla a tlaase, li-harmonics tse phahameng li tla hlahisoa nakong ea mosebetsi.Ka kakaretso, litsila tsa lehae tsa DC Ho sebelisoa theknoloji ea tokiso ea 6-pulse, ka hona, li-harmonics tsa boemo bo holimo tse hlahisoang ke lehlakore le le leng le nang le motlakase o tlase oa transformer ea rectifier haholo-holo ke 11 le 13 ka lehlakoreng la motlakase o tlase oa 2. windings etsa le yn mokhoa o kopanetsoeng, 5th le 7th High-order harmonics e ka fokotsoa ka lehlakoreng le phahameng-voltage, kahoo likarolo tsa 11 le 13 tsa litekanyetso tse phahameng tsa harmonic li bontšoa haholo-holo ka lehlakoreng le phahameng la motlakase.Litlamorao tse ka sehloohong tsa maqhubu a matla a holimo ho marang-rang a matla li kenyelletsa ho futhumatsa le ho sisinyeha ha lisebelisoa tsa motlakase, tahlehelo e ntseng e eketseha, bophelo bo khutsufalitsoeng ba ts'ebeletso, tšusumetso ea puisano, phoso ea ts'ebetso ea thyristor, phoso ea ts'ebetso ea lisebelisoa tse ling tsa ts'ireletso, botsofali le tšenyo ea lera la ho kenya motlakase. , joalo-joalo.
Litharollo tseo u ka khethang ho tsona:
Tharollo 1 Tsamaiso e bohareng (e sebetsang ho mabotho a matla a tlase, meqolo e letšehali le e nepahetseng)
1. Amohela lekala la taolo ea harmonic (3, 5, 7 filters) + lekala la taolo ea matla a sebetsang.Kamora hore sesebelisoa sa matšeliso a sefa se kenngoe tšebetsong, taolo ea harmonic le puseletso ea matla e sebetsang ea sistimi ea phepelo ea motlakase e fihlela litlhoko.
2. Sebelisa potoloho ea bypass e hatellang matšeliso a sa sebetseng a li-harmonics, 'me ka mor'a ho hokahanya mochine oa matšeliso, etsa hore matla a matla a finyelle litlhoko.
Khetho ea 2 Kalafo ea lehae (e sebetsa ho 12-pulse rectifier transformer low-voltage side treatment le enjene e kholo ea matla a phahameng le mochini oa matsoeli o kentsoeng ka thoko)
1. Adopt anti-harmonic bypass (5th, 7th, 11th order filter), ho latela mokhoa o itekanetseng ha leloala le ntseng le sebetsa, rarolla li-harmonics setšeng, ha le ame ts'ebetso ea lisebelisoa tse ling nakong ea tlhahiso, 'me li-harmonics ha li fihle boemong bo tloaelehileng. ka mora ho kenngwa tshebetsong.
2. Ho sebelisa filthara e sebetsang (ho sefa li-harmonics tse matla) le ho fetisoa ha filthara (5th, 7th, 11th order filtering), li-harmonics ka mor'a ho bulela ha li fihle ho maemo.
Nako ea poso: Apr-13-2023