Kupita patsogolo, ponena za izi, mungaganizire za kupita patsogolo kopeza satifiketi zaukadaulo, monga CET-4 ndi CET-6. Mu mota, mota ilinso ndi magawo. Mndandandawu pano sukutanthauza kutalika kwa mota, koma liwiro logwirizana la mota. Tiyeni titenge mota ya level 4 ngati chitsanzo kuti tiwone tanthauzo lenileni la mndandanda wa mota.
Mota ya Level 4 imatanthauza liwiro la mota la mphindi imodzi = {mafupipafupi a magetsi (50Hz) × masekondi 60} ÷ (magawo a mota ÷ 2) = 3000 ÷ 2 = ma revolutions 1500. Mu fakitale, nthawi zambiri timamva kuti mota ili ndi magawo angapo. Kuti timvetse, choyamba tiyenera kudziwa lingaliro la pole: pole imatanthauza pole yamaginito yopangidwa ndi jenereta rotor pambuyo poti mphamvu yotsitsimula yagwiritsidwa ntchito pa rotor coil. Mwachidule, zikutanthauza kuti kutembenuka kulikonse kwa rotor kumatha kuyambitsa ma circuits angapo a current mu kutembenuka kamodzi kwa stator coil. Ndikofunikira kupanga 50Hz potential ngati chiwerengero cha ma pole chili chosiyana. Kuthamanga kosiyana kumafunikira. 50Hz, masekondi 60 ndi mphindi (mwachitsanzo 3000) yogawidwa ndi chiwerengero cha ma pole ndi chiwerengero cha ma revolutions a mota pamphindi. Zomwezo ndi zoona ndi mota, yomwe ndi njira yosinthira ya jenereta.
Chiwerengero cha ma pole chikuwonetsa liwiro logwirizana la mota. Liwiro logwirizana la ma pole awiri ndi 3000rmin, liwiro logwirizana la ma pole anayi ndi 1500rmin, liwiro logwirizana la ma pole 6 ndi 1000rmin, ndipo liwiro logwirizana la ma pole 8 ndi 750rmin. Zingamveke kuti ma pole awiri ndi nambala ya maziko (3000), ma pole anayi akhoza kugawidwa m'ma 2 okha, ma pole 6 akhoza kugawidwa m'ma 3, ndipo ma pole 8 akhoza kugawidwa m'ma 4. M'malo mwa ma pole awiri, 3000 iyenera kugwiritsidwa ntchito kuchotsa awiri. Chiwerengero cha ma pole a mota chikakhala chochuluka, liwiro la mota limakhala lotsika, koma mphamvu yake imakhala yokulirapo; posankha mota, muyenera kuganizira mphamvu yoyambira yomwe imafunika ndi katundu. Mwachitsanzo, mphamvu yoyambira yomwe imafunika poyambira ndi katundu ndi yayikulu kuposa yoyamba yopanda katundu. Ngati ndi yoyambira yamphamvu kwambiri komanso yolemera, kuyamba kotsika (kapena kuyamba kwa nyenyezi) kuyeneranso kuganiziridwa; Ponena za liwiro lofanana ndi katundu mutazindikira kuchuluka kwa ndodo za mota, ikhoza kuganiziridwa kuti ikuyenda ndi lamba pulley wa mainchesi osiyanasiyana kapena ndi giya yosinthasintha ya liwiro (Gearbox). Ngati zofunikira za mphamvu ya katundu sizingakwaniritsidwe mutadziwa kuchuluka kwa ndodo za mota kudzera mu lamba kapena giya yotumizira, mphamvu yogwiritsira ntchito mota iyenera kuganiziridwa.
Mota ya AC ya magawo atatu imapangidwa makamaka ndi stator ndi rotor. Pamene AC ya magawo atatu yalumikizidwa ku stator, mphamvu ya maginito yozungulira imapangidwa. Mphamvu ya maginito nthawi zonse imakhala ndi mitengo iwiri (inganenedwenso kuti imawonekera awiriawiri), yomwe ndi N pole (North Pole) ndi S pole (south pole), yomwe imadziwikanso kuti counter pole. Pamene njira yozungulira ya AC motor stator winding ndi yosiyana, chiwerengero cha mitengo ya maginito ya rotating magnetic field ndi chosiyana. Chiwerengero cha mitengo ya maginito chimakhudza mwachindunji liwiro la mota, ndipo ubale wawo ndi: synchronous speed = 60 × Frequency level logarithm. Ngati liwiro la synchronous la mota ndi 1500 rpm, zitha kuwerengedwa kuti pole logarithm ndi 2, ndiko kuti, mota ya 4-pole malinga ndi fomula yomwe ili pamwambapa. Synchronous speed ndi pole logarithm ndi magawo oyambira a mota, omwe angapezeke pa nameplate ya mota. Chifukwa pole logarithm ingakhudze liwiro la mota, liwiro la mota lingasinthidwe posintha pole logarithm ya mota.
Pa zinthu zamadzimadzi monga mafani ndi mapampu, katundu wamtunduwu uli ndi mawonekedwe odziwika bwino. Monga mwambi umanenera, umatchedwa kukana kusintha, zomwe zikutanthauza kuti katundu wamtunduwu umalimbana kwambiri ndi kusintha kwa momwe zinthu zilili pano. Ngakhale kuti mphamvu yofunikira kuti ipititse patsogolo kusintha kwa katundu wamtunduwu si yayikulu, imafunika mphamvu zambiri kuti isinthe momwe zinthu zilili pano mwachangu. Ili ngati madzi otentha. Moto wawung'ono ukhozanso kuwira, ndipo uyenera kuwira posachedwa, ndipo moto womwe ungafunike udzakhala waukulu kwambiri.
Izi ndi mafotokozedwe enieni a mndandanda wa magalimoto. Pafupipafupi ndi mphamvu yoyambira, palibe ubale wosapeŵeka pakati pawo. Mphamvu yoyambira imadalira momwe curve yoyambira ya VF imakhalira komanso nthawi yofulumira. Pa kuchuluka kwa madzi, kugwiritsa ntchito mphamvu zambiri kungapangitse kuti zida zizigwira ntchito bwino komanso kuti zipeze phindu lalikulu pazachuma.
Nthawi yotumizira: Novembala-08-2021
