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Kodi mota yamagetsi imagwira bwanji ntchito fiziki

Kodi mota yamagetsi imagwira bwanji ntchito fiziki

Ntchito ya injini ndikutembenuza mphamvu yamagetsi kukhala mphamvu yamakina. Ma motors amagawidwa m'magulu awiri akuluakulu: AC motors ndi DC motors.
(1) AC motor ndi kuwongolera kwake
Ma mota a AC amagawidwa kukhala ma asynchronous motors ndi ma synchronous motors. Kodi mota yamagetsi imagwira bwanji ntchito fizikiMa Asynchronous motors amagawidwa kukhala ma motors asynchronous motors, magawo awiri asynchronous motors ndi magawo atatu asynchronous motors malinga ndi kuchuluka kwa magawo a stator. Magawo atatu asynchronous motor ali ndi maubwino osavuta, magwiridwe antchito odalirika komanso otsika mtengo, ndipo amagwiritsidwa ntchito kwambiri popanga mafakitale ndi zaulimi.

Kodi mota yamagetsi imagwira bwanji ntchito fiziki
1. Mapangidwe oyambira amtundu wa asynchronous motor
Kupanga kwa gawo lachitatu la asynchronous motor kumagawidwanso magawo awiri: stator ndi rotor.
(1) Wopanga:
Stator ndi gawo lokhazikika la injini ndipo limagwiritsidwa ntchito kupanga maginito ozungulira. Amapangidwa makamaka ndi stator pachimake, stator yokhotakhota ndi maziko.
(2) Rotor:
Rotor ndiye gawo lofunikira la rotor.Kodi mota yamagetsi imagwira bwanji ntchito fiziki Pali mitundu iwiri ya ma rotor, squirrel-cage ndi mafunde. Phunzirani makhalidwe awo ndi kusiyana kwawo. Khola la gologolo limagwiritsidwa ntchito popanga ma motors ang'onoang'ono ndi apakatikati (100k kapena kuchepera). Ili ndi dongosolo losavuta, ntchito yodalirika komanso kukonza bwino. Mtundu wokhotakhota ukhoza kupititsa patsogolo ntchito yoyambira ndikusintha liwiro. Kusiyana kwa mpweya pakati pa stator ndi rotor kudzakhudza ntchito ya galimoto. Kukula kwa kusiyana kwa mpweya nthawi zambiri kumakhala pakati pa 0.2 ndi 1.5 mm.
Phunzirani njira yolumikizira ya stator windings.Kodi mota yamagetsi imagwira bwanji ntchito fiziki


2. Mfundo ntchito ya atatu gawo asynchronous galimoto
Phunzirani za mafomuwa n1=60f/P, S=(n1-n)/n1, n=(1-S)60f/P, ndi kumvetsa tanthauzo lake (ndikofunikira kwambiri), ndi kutha kugwiritsa ntchito mafomuwa mosinthasintha kuti muwerengere. Komanso kumbukirani kuti nthawi zambiri kutsetsereka kwa SN kwa mota pamtengo wovotera kumakhala pafupifupi 0.01-0.06. Zitsanzo zomwe zili m'bukuli ziyenera kuyang'ana kwambiri.

Kodi mota yamagetsi imagwira bwanji ntchito fiziki
3.Kodi physics yamagetsi yamagetsi imagwira ntchito bwanji. Deta pa nameplate ya atatu-gawo asynchronous motor
(1) Chitsanzo: Phunzirani chitsanzo cha m’buku.
(2) Mulingo: Nthawi zambiri mumvetsetse, dziwani ma frequency ovotera ndi liwiro lovotera, ma frequency adziko lathu ndi 50 Hz.
(3) Njira yolumikizira: Pali mtundu wa Y ndi mtundu wa ngodya.
(4) Gulu la insulation ndi kukwera kwa kutentha: Dziwani tanthauzo la kukwera kovomerezeka kwa kutentha.
(5) Njira zogwirira ntchito: zimamvetsetsa bwino.


4. Makhalidwe amakina a atatu gawo asynchronous galimoto
Dziwani ubale pakati pa torque yovotera, torque yayikulu ndi torque yoyambira. Zolemba zomwe zili m'bukuli ziyenera kuphunzitsidwa bwino komanso kugwiritsidwa ntchito mosinthasintha powerengera. Kumbukiraninso izi:
(1) Pozungulira pa liwiro lokhazikika, torque ya injini iyenera kukhala yofanana ndi torque yokana.
(2) Pamene torque ya katundu ikuwonjezeka, torque T (3) ya mphindi yoyamba ya injini nthawi zambiri imakhala 1.8-2.2.
(4) injini ikayambika, n=0, s=1.

Kodi mota yamagetsi imagwira bwanji ntchito fiziki
5. Kodi physics yamagetsi yamagetsi imagwira ntchito bwanji. Kuyamba kwa magawo atatu asynchronous motor
(1) Chiyambi chenicheni
Mlingo wotsetsereka poyambira ndi 1, mphamvu ya electromotive mu rotor ndi yayikulu, ndipo ma rotor panonso ndi akulu. injini ikayambika pamagetsi ovotera, imatchedwa kuyambika kwachindunji, ndipo kuyambika kwachindunji kumakhala pafupifupi nthawi 5-7 zapano. Nthawi zambiri, injini yaing'ono ya asynchronous yokhala ndi mphamvu yovotera 7.5 kW kapena kuchepera imatha kuyambika mwachindunji.
Zida zamagetsi zomwe zimagwiritsidwa ntchito pamayendedwe owongolera oyambira zimaphatikiza masiwichi ophatikizika, mabatani, ma AC contactor intermediate relays, ma relay otentha ndi ma fuse. Phunzirani makhalidwe awo ndi kuwerengera mawerengedwe amakono a fusesi.
Kodi physics yamagetsi yamagetsi imagwira ntchito bwanji. Direct start control circuit: dziwani mfundo zake zoyendetsera.
(2) Buck kuyamba kwa gologolo khola asynchronous mota.
Phunzirani mfundo yogwirira ntchito ya star-angle starter ndi autotransformer poyambira poyambira
(3) Kuyamba kwa chilonda cha magawo atatu asynchronous motor
Nthawi zambiri kumvetsa.
6. Kuwongolera kutsogolo ndi kumbuyo kwa gawo lachitatu la asynchronous motor
Kumvetsetsa bwino
7. Magawo atatu asynchronous motor speed regulation
Gawo ili ndilofunika kwambiri ndipo muyenera kumvetsetsa ndondomekoyi. Kodi physics yamagetsi yamagetsi imagwira ntchito bwanji. Pali njira zitatu zosinthira liwiro la mota, mwachitsanzo, kusintha ma frequency, kusintha kuchuluka kwa mapeyala amitengo ya mapindikidwe kapena kusintha slip.
8. Synchronous mota
(1) Kupanga injini ya synchronous
Kuti tifananize ndi ma asynchronous motors. (funso la cholinga)
(2) Mfundo yogwirira ntchito ya motor synchronous
Dziwani kuti liwiro la motor synchronous ndi lokhazikika ndipo silisintha ndi katundu. Liwiro la motor synchronous silingasinthidwe.

Kodi mota yamagetsi imagwira bwanji ntchito fiziki

Mfundo ya injini imatanthawuza kuchita kwa mphamvu ya maginito pakalipano, yomwe imapangitsa kuti injiniyo ikhale yozungulira. Ndi makina omwe amasintha mphamvu zamagetsi kukhala mphamvu zamakina.Kodi physics yamagetsi yamagetsi imagwira ntchito bwanji.

1 wapawiri gawo motor mfundo
          Koyilo yopatsa mphamvu imakakamizika kuzungulira mugawo la maginito.

         Izi zikutanthauza kuti, koyilo yopatsa mphamvu imapanga magnetism ndikuthamangitsa mphamvu ya maginito yoyambirira, potero imazungulira bwino.

         Njira yomwe woyendetsa wopatsa mphamvu amakakamizika kusuntha mu mphamvu ya maginito imagwirizana ndi momwe maginito amayendera (njira ya magnetic field). Mfundo yogwiritsira ntchito injini ndi mphamvu ya maginito ku magetsi

         Kuthamanga kumakakamizika kuzungulira motere.Kodi physics yamagetsi yamagetsi imagwira ntchito bwanji.  Ndi makina omwe amasintha mphamvu zamagetsi kukhala mphamvu zamakina.

         Galimoto imagwiritsa ntchito mfundo ya maginito apano, ndipo mota imagawidwa kukhala mota ya DC ndi mota ya AC kutengera mphamvu yomwe imagwiritsidwa ntchito.

2 Kodi physics yamagetsi yamagetsi imagwira ntchito bwanji. DC motor mfundo
        Koyilo ya DC imatha kuzunguliridwa theka la kutembenuka kwa maginito. Kuti atembenuke, woyendetsa amayenera kutembenuza malo ozungulira kuti asinthe momwe akulowera.

 

3 Mfundo Yozungulira Yozungulira ya Magawo Atatu a AC Asynchronous Motor
 
Pamene mtengo wa maginito uzungulira molunjika, mphamvu ya maginito ya maginito imadula chozungulira, ndipo mphamvu ya electromotive imalowetsedwa mu bar. Kuwongolera kwa mphamvu ya electromotive kumatsimikiziridwa ndi lamulo lamanja lamanja. Chifukwa kusunthako kuli kofanana, ngati mlongoti sukuyenda ndipo chozungulira chozungulira chimazungulira molunjika, mphamvu ya electromotive imathanso kupangitsidwa mu bar. Pansi pa mphamvu ya electromotive, pakali pano amapangidwa mu bar yotsekedwa. Kodi physics yamagetsi yamagetsi imagwira ntchito bwanji. Zomwe zilipo panopa zimagwirizana ndi maginito a maginito ozungulira, ndipo rotor bar imayendetsedwa ndi mphamvu yamagetsi yamagetsi F, ndipo mayendedwe a mphamvu yamagetsi amatha kutsimikiziridwa ndi lamulo lamanja lamanzere. Mphamvu yamagetsi imapanga torque yamagetsi ndipo rotor imazungulira.

 

Ndimafuno abwino onse,
 
Lee (Dipatimenti Yogulitsa; Abiti.)         
NER GULU NKHA., LIMITED    
Yantai Bonway Mlengi Co., Ltd.                        
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