The otsika-voltage variable frequency motors opangidwa ndiLT SIMO Motorkukhala ndi makhalidwe otsatirawa
- Mapangidwe a Electromagnetic: Kwa ma asynchronous motors wamba, magawo akulu amachitidwe omwe amaganiziridwa pakukonzanso ndikuchulukirachulukira, magwiridwe antchito, magwiridwe antchito komanso mphamvu. Kwa ma motors osinthika pafupipafupi, popeza slip yovuta imakhala yosiyana mosiyanasiyana ndi mphamvu yamagetsi, imatha kuyambika mwachindunji pamene slip yovuta ili pafupi ndi 1. Choncho, kuchulukirachulukira ndi ntchito yoyambira sikuyenera kuganiziridwa mochuluka, ndipo nkhani yofunika kwambiri yomwe iyenera kuthetsedwa ndi momwe mungapititsire kusinthika kwa galimoto kuzinthu zopanda mphamvu za sinusoidal. Njira zake nthawi zambiri zimakhala motere:
1) Chepetsani kukana kwa stator ndi rotor momwe mungathere.
Kuchepetsa kukana kwa stator kumatha kuchepetsa kutayika kwakukulu kwa mkuwa kuti kulipirire kuchuluka kwa kutayika kwa mkuwa komwe kumachitika chifukwa cha ma harmonics apamwamba.
2) Pofuna kupondereza ma harmonics apamwamba pakali pano, inductance ya galimoto iyenera kuwonjezereka moyenera. Komabe, kuchulukira kwa kagawo kakang'ono ka rotor kutayikira, kumapangitsa kuti khungu lizikulirakulira, komanso kutayika kwakukulu kwa mkuwa. Chifukwa chake, kukula kwa kutayikira kwa mota kuyenera kuganizira za kufananiza kwa impedance mkati mwa liwiro lonse lama liwiro.
3) Dongosolo lalikulu la maginito la ma frequency motor nthawi zambiri limapangidwa kuti likhale lopanda unsaturated. Choyamba, zimaganiziridwa kuti ma harmonics apamwamba adzakulitsa machulukitsidwe a maginito ozungulira. Chachiwiri, zimaganiziridwa kuti pama frequency otsika, ma voliyumu otulutsa a inverter amayenera kukulitsidwa moyenera kuti awonjezere ma torque.
- Kamangidwe kamangidwe
Popanga kapangidwe kake, chofunikira kwambiri ndikukhudzidwa ndi mawonekedwe amagetsi osagwiritsa ntchito sinusoidal pamapangidwe otsekera, kugwedezeka, njira yoziziritsira phokoso ndi mbali zina zamagalimoto osinthika. Kawirikawiri, zinthu zotsatirazi ziyenera kuganiziridwa:
1) Mulingo wa insulation, nthawi zambiri F mulingo kapena kupitilira apo, limbitsani kutchinjiriza pansi ndi mphamvu yotchingira ya waya, ndipo makamaka lingalirani kuthekera kwa kutchinjiriza kupirira mphamvu yamagetsi.
2) Kwakugwedezeka ndi vuto la phokoso la injini, kulimba kwa zigawo zamagalimoto ndi zonse ziyenera kuganiziridwa bwino, ndipo mafupipafupi ake achilengedwe ayenera kuwonjezereka momwe angathere kuti apewe resonance ndi mphamvu iliyonse.
3) Njira yozizirira: Nthawi zambiri, kuziziritsa kwa mpweya wokakamiza kumatengedwa, ndiye kuti, chowotcha chachikulu chozizira chamoto chimayendetsedwa ndi mota yodziyimira payokha.
4) Njira zopewera shaft pano, njira zopangira kutchinjiriza ziyenera kutsatiridwa ndi ma mota omwe ali ndi mphamvu yopitilira 160KW. Makamaka, ndikosavuta kupanga maginito ozungulira asymmetry ndi shaft pano. Zomwe zimapangidwira ndi zigawo zina zapamwamba kwambiri zikaphatikizidwa, shaft current idzawonjezeka kwambiri, zomwe zimapangitsa kuwonongeka, choncho njira zotetezera zimatengedwa nthawi zambiri.
5) Kwanthawi zonse mphamvu variable frequency motors, pamene liwiro limaposa 3000 / min, mafuta apadera osagwirizana ndi kutentha ayenera kugwiritsidwa ntchito kubwezera kutentha kwa kunyamula.
Magalimoto osinthika amatha kugwira ntchito kwa nthawi yayitali mumitundu yosiyanasiyana ya 0.1HZ--130HZ.
Ma motor wamba amatha kuthamanga kwa nthawi yayitali: 20--65hz pamitengo iwiri.
25-75hz pamitengo 4.
30-85hz pamitengo 6.
35--100hz pamitengo 8.