Yerekezerani ndi seti ya MG ndi IGBT, chifukwa chiyani seti ya MG ndi yoyenera kwambiri kwa oyesa transformer yamagetsi? Kodi ndani ogulitsa akuluakulu ku China ndi padziko lonse lapansi?

Funso lanu ndi nkhani yaukadaulo yakale mu malo oyesera a transformer:

Seti ya MG (Motor-Jenereta) poyerekeza ndi IGBT / solid-state frequency converter (SFC).

 

M'machitidwe, mafakitale ambiri akuluakulu opanga ma power-transformer amakondabe ma MG sets, makamaka poyesa ma voltage ndi kutayika kwa magetsi. Pansipa pali kufananiza kothandiza komwe kumagwiritsidwa ntchito m'mafakitale opanga ma transformer.

1. MG Set vs IGBT Power Supply ya Kuyesa Transformer

 

Chinthu	Seti ya MG (Jenereta ya Magalimoto)	IGBT / Static Frequency Converter
Ukadaulo	Makina ozungulira (jenereta ya ma drive a mota)	Chosinthira magetsi chamagetsi chamagetsi
Mphamvu yamagetsi	Yaikulu kwambiri (MVA zingapo mosavuta)	Yaikulu koma yokwera mtengo pa mphamvu zambiri
Mafunde	Mafunde oyera kwambiri a sine	Ikhoza kukhala ndi ma harmonics osinthasintha
Mphamvu yafupikitsa	Wamphamvu kwambiri	Zochepa ndi zamagetsi
Kutha kunyamula katundu wambiri	Zabwino kwambiri	Zochepa
Kudalirika	Yolimba kwambiri	Zimakhudzidwa ndi kulephera kwa semiconductor
Kukonza	Kusamalira makina	Kusakonza makina pang'ono
Kukula	Lalikulu	Kakang'ono

 

Ma seti a MG amapereka magetsi odziyimira pawokha komanso magetsi okhazikika/amphamvu pamakina oyesera.

2. Chifukwa Chake Ma MG Sets Amakonda Kuyesedwa kwa Power Transformer

 

2.1️⃣ Mphamvu yofupikitsa magetsi komanso yodzaza kwambiri

 

Pa nthawi ya mayeso monga:

• Mayeso a impedance afupikitsa
• Mayeso otaya katundu
• Mayeso okweza kutentha

 

Transformer ikhoza kukoka mphamvu yayikulu kwambiri ya transient current.

 

Ma seti a MG amapirira bwino izi chifukwa cha kusinthasintha kwawo, pomwe makina amagetsi amatha kugwedezeka kapena kuchepetsa mphamvu yamagetsi.

 

 

2.2️⃣ Mphamvu yayikulu (mlingo wa MVA)

 

Mafakitale akuluakulu osinthira magetsi angafunike:

• Kuyesa kwa MVA kwa 5–20
• Nthawi zina 30 MVA kapena kuposerapo

 

MG imayika kukula mosavuta mpaka kufika pamlingo waukulu.

Mwachitsanzo, makina a MG amagwiritsidwa ntchito poyesa ma transformer a 315 MVA / 400 kV m'mafakitale ena.

 

Zipangizo zamagetsi za IGBT pamlingo uwu zimakhala zodula kwambiri komanso zovuta.

 

 

2.3️⃣ Mafunde a sinusoidal okhazikika kwambiri

 

Kuyeza kutayika kumafuna mawonekedwe olondola kwambiri a mafunde:

• Mayeso otayika apakati
• Mayeso otaya katundu

 

Ma seti a MG amapanga mafunde achilengedwe a sine kuchokera ku jenereta yolumikizana.

 

Zipangizo za IGBT zimapanga mawonekedwe a PWM ndipo zimafuna zosefera, zomwe zingayambitse ma harmonics omwe amakhudza kulondola kwa muyeso.

 

 

2.4️⃣ Kupatula magetsi kuchokera ku gridi

 

Ma seti a MG amapereka njira yolekanitsira pakati pa gridi ndi chinthu choyesera, zomwe zimathandiza:

• Chepetsani kusokonezeka kwa gridi
• Sinthani kukhazikika kwa muyeso
• Tetezani gridiyi panthawi yoyesa mphamvu zambiri.

 

 

2.5️⃣ Kutulutsa kwapamwamba kwambiri kwa mayeso oyambitsidwa

 

Mayeso a voltage oyambitsidwa ndi transformer yamagetsi nthawi zambiri amafuna:

• 100 Hz
• 150 Hz
• 200 Hz

 

Ma seti a MG amapanga izi mosavuta mwa kusintha liwiro la jenereta kapena kasinthidwe ka pole.

3. Chifukwa Chake Mafakitale Ena Akusamukira ku Machitidwe a IGBT

 

Ngakhale kuti MG ili ndi ubwino, makina amakono a IGBT / Static Frequency Converter (SFC) akutchuka chifukwa cha:

• malo ocheperako
• kulamulira kodzichitira zokha
• kuyambitsa mwachangu
• Kusamalira makina pang'ono.

 

Amalolanso malo oyesera okha komanso mapulogalamu osinthasintha amagetsi/ma frequency.

 

Ma laboratories ambiri atsopano oyesera amaphatikiza ukadaulo wonsewu.

4. Ogulitsa Akuluakulu Padziko Lonse (Machitidwe Oyesera Mphamvu za Transformer)

 

Ogulitsa otsogola padziko lonse lapansi

• Siemens Energy - makina akuluakulu oyesera transformer
• OMICRON Electronics - njira zowunikira ndi kuyesa transformer
• Kampani ya Doble Engineering - njira zamakono zoyesera transformer
• Megger Group - wopanga zida zoyesera mphamvu zamagetsi
• HIGHVOLT Prüftechnik Dresden - zida za labotale zapamwamba kwambiri komanso zoyeserera

 

Makampaniwa makamaka amapereka ma laboratories athunthu oyesera ma transformer.

5. Ogulitsa Akuluakulu aku China (MG Set / Mayeso a Machitidwe)

 

China ili ndi ogulitsa ambiri opangira pansi zoyesera za transformer m'fakitale.

 

Zophatikiza zida

• Shanghai Trihope
• Makina Oyendetsera Mphamvu Zamagetsi a Wuhan Huatian
• Mphamvu kachiwiri

Makampani awa nthawi zambiri amapereka:

• Ma seti a MG
• machitidwe oyesera oyambitsidwa
• machitidwe oyezera kutayika
• ma laboratories onse oyesera transformer.
  
  
  6. Zenizeni za Makampani

   

  Mu mafakitale ambiri akuluakulu osinthira mphamvu (>220 kV):

   

  Kasinthidwe wamba:

  Mayeso a MG SET---oyambitsa magetsi

  MG SET---mayeso otaya katundu

  IGBT/SFC --- Kupereka kosinthika kothandiza

   

  Kotero ma seti a MG akadali maziko a malo oyesera amphamvu kwambiri, pomwe makina a IGBT amapereka kusinthasintha.