Leloala le chesang (hot rolling).

Lintlha tsa motheo tsa basebelisi
K'hamphani e rollang tšepe haholo-holo e hlahisa tšepe e chitja e chesang e nang le sebopeho sa 16mm~φ150mm.Karolo ea matla ea mohala oa tlhahiso ea k'hamphani e tsamaisoa ke enjene ea DC mme e na le li-transformer tse peli tsa 3150KVA.Setšoantšo sa sistimi ea phepelo ea motlakase ke se latelang:

Lintlha tse sebetsang hantle
Karolelano ea matla a 3150KVA DC brushless motor ke PF=0.75, hajoale e sebetsang ke 2650A, pulse ea mantlha ke makhetlo a 5, makhetlo a 7, mme karolelano ea hona joale ea phetoho ke 19.5%.

Tlhahlobo ea Tsamaiso ea Matla
Mojaro o ka sehloohong oa DC brushless motor ballast ke 6 single-pulse ballasts.Thepa ea ballast e hlahisa palo e kholo ea pulse hajoale ts'ebetsong ea AC, AC le DC.Ke mohloli o tloaelehileng oa pulse hajoale.Ha e kenngoa ka har'a marang-rang a matla, motlakase oa harmonic Motlakase oa hona joale oa ho sebetsa o bakoa ke ho senyeha ha marang-rang a matla, e leng se bakang ho tsoa ha motlakase le hona joale, ho beha boleng le ts'ireletso ea ts'ebetso kotsing. ea phepelo ea motlakase, e eketsa tahlehelo ea mohala le ho kheloha ha motlakase o sebetsang, 'me e na le phello e mpe marangrang a motlakase le lisebelisoa tsa motlakase ka botsona.

Sefa moralo oa kalafo oa mats'eliso a matla a sebetsang
Lipheo tsa puso
Moralo oa lisebelisoa tsa matšeliso a filthara o kopana le litlhoko tsa khatello ea harmonic le taolo e sebetsang ea khatello ea matla.
Tlas'a mokhoa oa ho sebetsa oa tsamaiso ea 0.4KV, ka mor'a hore lisebelisoa tsa matšeliso a filthara li kenngoe tšebetsong, pulse current e hatelloa, 'me tekanyo ea khoeli le khoeli ea matla e ka ba 0.92.
Boemo bo phahameng ba harmonic resonance, resonance overvoltage, le overcurrent e bakoang ke ho hokahanya le potoloho ea lekala ea matšeliso ea filthara e ke ke ea etsahala.

Moqapi o Latela Melao
Boleng ba matla Li-harmonics tsa grid ea sechaba GB/T14519-1993
Boleng ba matla Voltage fluctuation le flicker GB12326-2000
Maemo a akaretsang a tekheniki a sesebelisoa sa puseletso ea matla a tlase-voltage reactive GB/T 15576-1995
Sesebelisoa sa mats'eliso a matla a tlase-voltage a sebetsang JB/T 7115-1993
Maemo a tekheniki a puseletso ea matla a sebetsang JB/T9663-1999 "Low-voltage reactive power automatic compensation controller" Boleng ba moeli o phahameng oa boemo bo holimo ho tloha ho matla a tlase-tlase le lisebelisoa tsa elektroniki GB/T17625.7-1998
Mantsoe a theknoloji ea motlakase Li-capacitor tsa matla GB/T 2900.16-1996
Low voltage shunt capacitor GB/T 3983.1-1989
Reactor GB10229-88
Mohloli oa IEC 289-88
Taolo ea mats'eliso a matla a tlase a sebetsang ka matla a tlase a laela maemo a tekheniki DL/T597-1996
Kereiti ea tšireletso ea motlakase ea matla a tlase a GB5013.1-1997
Li-switchgear tse tlase-tlase le lisebelisoa tsa taolo GB7251.1-1997

Mehopolo ea moralo
Ho ea ka boemo bo ikhethileng ba k'hamphani, leano la puseletso ea matla a reactive ea DC brushless motor filter e etselitsoe ho ela hloko matla a matla le khatello ea hona joale ea pulse, mme sete ea puseletso ea motlakase e tlase e kentsoeng tlase ea 0.4kV. lehlakore la voltage ea transformer, ho hatella hona joale, le ho lefa mojaro o sebetsang, le ho ntlafatsa matla a matla.The ballast e hlahisa 6K-1 pulse current ts'ebetsong ea brushless DC motor, 'me e sebelisa cascaded current ho qhala hona joale,' me hona joale e qhibilihisitsoeng e ka ba 5250Hz le 7350Hz.Ka hona, puseletso ea matla a sebetsang ka filthara e tlameha ho etsoa bakeng sa 250Hz, 350Hz le maqhubu a mang ho etsa bonnete ba hore potoloho ea puseletso ea filthara e khona ho sefa matla a phallo ea hona joale, ho ntlafatsa matla, le ho etsa hore pulse ea hona joale e lumellane le GB/T3. .

kabelo ea moralo
Matla a akaretsang a 3150KVA a lefelloa ho tloha ho 0.72 ho isa ho 0.95.Thepa ea puseletso ea filthara e tlameha ho kenngoa le 2100KVar, 'me e arotsoe ka lihlopha tse 6 tsa li-switches tsa taolo ho lefella khatello e ka tlaase ea lehlakoreng la motlakase, le ho fetola molumo ho 95KVAR, ho ela hloko litlhoko tsa matla a tlhahiso ea mohala oa tlhahiso.

Tlhahlobo ea phello ka mor'a ho kenya matšeliso a filthara
Ka Mmesa 2011, sesebelisoa sa mats'eliso a matla a mats'oao a motlakase a motlakase oa DC se ile sa kengoa 'me sa qala ho sebetsa.Sesebelisoa se latela ka bohona liphetoho tsa mojaro oa enjene ea DC, 'me ha e le hantle se sefa li-harmonics tse phahameng ho lefa matla a sebetsang le ho ntlafatsa ntlha ea matla.lintlha tse latelang:

Harmonic spectrum diagram tsa kabo

Laela Waveform

Kamora hore sesebelisoa sa mats'eliso a filthara se sebelisoe, phetisetso ea matla e ka ba 0.98 (karolo e phahamisitsoeng e ka ba 0.7 ha sesebelisoa sa matšeliso se tlosoa)

Ts'ebetso ea mojaro
Ntho ea matla ea 3150KVA transformer e ka holimo ho 0.95, harmonic ea 5 e fokotsehile ho tloha 510A ho ea 102A, 7th harmonic e fokotsehile ho tloha 300A ho ea ho 60A, 'me e sebelisoang hona joale e fokotsehile ho tloha 2650A ho ea 2050A, lerotholi la 23%.Ka mor'a matšeliso, boleng ba ho fokotsa tahlehelo ea matla ke WT=△Pd*(S1/S2)2*τ*[1-(cosφ1/cosφ2)2]=35×{(0.72×3150)/3150}2×0.66≈33 (kw h) Ka foromo, Pd ke tahlehelo ea potoloho e khutšoanyane ea transformer, e leng 35KW, 'me ho boloka litšenyehelo tsa selemo le selemo tsa litšenyehelo tsa motlakase ke 33 * 20 * 30 * 10 * 0.7 * 2 = 280,000 yuan (e thehiloeng ho sebetsa 20 lihora ka letsatsi, matsatsi a 30 ka khoeli, le likhoeli tse 10 ka selemo, 0,7 yuan ka kilowatt-hora ea motlakase);ka lebaka la ho fokotseha ha li-harmonics, bili ea motlakase e bolokiloe: Tahlehelo ea transformer e bakoang ke hona joale ea harmonic ke haholo-holo ho eketsa tahlehelo ea ferromagnetic le tahlehelo ea koporo.Tahlehelo ea ferromagnetic e amana le matla a boraro a maqhubu a hona joale a harmonic.Boenjiniere Ka kakaretso, 2% ~ 5% e nkoa.Bakeng sa mojaro oa ho lokisa, 2% e nkiloe, ke hore, WS = 4300 * 6000 * 0.7 * 0.03≈360,000 yuan, ke hore, ho boloka selemo le selemo litšenyehelo tsa motlakase ke 28 + 36 = 64 (10,000 yuan).

boemo ba boemo ba matla
Karolo ea litokelo ka kakaretso ea k'hamphani e eketsehile ho tloha ho 0.72 ho isa ho 0.95, ntlha ea litokelo tsa khoeli le khoeli e ntse e le 0.96-0.98, 'me moputso oa khoeli le khoeli o tloha ho li-yuan tse fetang 100,000 ho isa ho 15,000 yuan.
Matšeliso a matla a motlakase a tlase a motlakase oa DC a na le bokhoni ba ho hatella pulse hona joale le ho lefella matla a matla a sebetsang, ho rarolla bothata ba kotlo ea matla a sebetsang, ho eketsa bokhoni ba motlakase, ho fokotsa tahlehelo ea matšeliso a sebetsang, ho eketsa tlhahiso. le fa Khamphani e hlahisitse melemo ea bohlokoa ea moruo, mme moreki o fumane letsete la projeke ka nako e ka tlase ho selemo.Ka hona, k'hamphani e khotsofetse haholo ka matšeliso a matla a sebetsang a filthara ea brushless DC, 'me e tla tsebisa bareki ba bang nakong e tlang.