Phase-to-phase fault imhosva yemagetsi yakasarudzika kune matatu-phase motor windings. Kubva pahuwandu hwemagetsi asina kunaka, zvinogona kuwanikwa kuti maererano nekukanganisa kwechikamu-ku-phase, matambudziko emagetsi maviri-pole anonyanya kuiswa, uye mazhinji acho anoitika pamagumo emhepo.

Kubva pakugoverwa kwemakoiri ekumoneredza mota, kureba kwema-pole motor winding coils yakakura, uye kuumbwa kwekupedzisira idambudziko rakakura mukuita kwewaya. Uyezve, zvakaoma kugadzirisa kusungirirwa kwechikamu-ku-chikamu uye kusunga ma windings, uye phase-to-phase insulation displacement inowanzoitika. mubvunzo.

Munguva yekugadzira, vagadziri vemotokari vakamira vanozotarisa kutadza kwechikamu-kune-chikamu kuburikidza neinomira voltage nzira, asi iyo yekumisikidza mamiriro ekuputsika inogona kusawanikwa panguva yekupepeta kwekuita kwekuongorora uye hapana-mutoro bvunzo. Matambudziko akadaro anogona kuitika Zvinoitika kana mota ichimhanya pasi pemutoro.

Iyo mota inotakura bvunzo imhando yekuyedza chinhu, uye chete hapana-mutoro bvunzo inoitwa panguva yekuyedzwa kwefekitori, chinova chimwe chezvikonzero zvekuti mota ibve mufekitori ine matambudziko. Nekudaro, kubva pamaonero ekugadzira kudzora kwemhando, isu tinofanirwa kutanga nekumisikidza kwemaitiro, kuderedza uye kubvisa mashandiro akaipa, uye kutora matanho ekusimbisa anodiwa emhando dzakasiyana dzemhepo.

Nhamba yemapole pairs emota

Imwe neimwe seti yemakoiri eatatu-chikamu AC mota inoburitsa N uye S magineti matanda, uye huwandu hwemagineti mapango ari muchikamu chimwe nechimwe chemota imwe neimwe nhamba yematanda. Sezvo magineti mapango achionekwa ari maviri, mota ine 2, 4, 6, 8… matanda.

Kana paine coil imwe chete muchikamu chega chega chekupeta kweA, B, uye C nhanho, iyo yakaenzana uye yakagovaniswa padenderedzwa, shanduko iripo kamwe chete, uye inotenderera magineti inotenderera kamwe chete, inova peya yematanda. Kana chikamu chega chega cheA, B, uye C chetatu-phase windings chikaumbwa nemakoiri maviri akatevedzana, uye kureba kwekoiri imwe neimwe iri 1/4 denderedzwa, ipapo iyo composite yemagineti yakagadzwa neatatu-phase ikozvino ichiri kutenderera. magnetic field, uye ikozvino kuchinja kamwe chete, iyo inotenderera magnetic field inongoshandura 1/2 kutendeuka, iyo 2 pairs of pole. Saizvozvowo, kana mhepo inoputika yakarongedzwa maererano nemimwe mitemo, 3 mapairi emapuranga, 4 mapeji emapuranga kana kazhinji kutaura, P pairs yemapuranga inogona kuwanikwa. P ndiyo pole logarithm.

Injini ine mapango masere zvinoreva kuti rotor ine 8 magineti poles, 2p = 8, kureva kuti, mota ine mapeya mana emagineti mapango. Kazhinji, maturbo jenareta akavanzika pole motors, ane mashoma mapairi, kazhinji 1 kana 2 pairs, uye n = 60f/p, saka kumhanya kwayo kwakakwira zvakanyanya, kusvika ku3000 revolutions (simba frequency), uye Huwandu hwematanda e hydroelectric jenareta yakakura kwazvo, uye chimiro che rotor imhando yedanda, uye maitiro acho akaomarara. Nekuda kwenhamba huru yemapango, kumhanya kwayo kwakadzikira, pamwe marevolutions mashoma pasekondi.

Kuverengera kwemota synchronous kumhanya

Iyo yekumhanyisa kumhanya kwemota inoverengerwa zvinoenderana neformula (1). Nekuda kwekutsvedza kweiyo asynchronous mota, pane imwe mutsauko pakati pekumhanya chaiko kwemota uye nekumhanyisa kumhanya.

n=60f/p………………………(1)

Muchidimbu (1):

n - kumhanya kwemotokari;

60 - inoreva nguva, masekondi makumi matanhatu;

F--simba frequency, frequency yesimba munyika yangu i50Hz, uye frequency yesimba munyika dzekunze i60 Hz;

P——huwandu hwemapole pairs emota, senge mota 2-pole, P=1.

Semuenzaniso, kune mota ye50Hz, iyo synchronous kumhanya kwe2-pole (1 peya yematanda) mota ndeye 3000 rpm; kumhanya kwe4-pole (2 pairs of pole) mota ndeye 60×50/2=1500 rpm.

Panyaya yesimba rinoramba richibuda, kuwedzera kwehuwandu hwemapole pairs emota, kuderera kwekumhanya kwemota, asi yakakura torque yayo. Naizvozvo, kana uchisarudza mota, funga kuti yakawanda sei kutanga torque mutoro unoda.

Kuwanda kwematatu-chikamu alternating ikozvino munyika yedu ndeye 50Hz. Naizvozvo, kumhanyisa kumhanya kwe2-pole mota ndeye 3000r/min, iyo synchronous kumhanya kwe4-pole mota ndeye 1500r/min, iyo synchronous kumhanya kwe6-pole mota ndeye 1000r/min, uye kumhanyisa kumhanya kweimwe. 8-pole mota ndeye 750r/min, Iyo inopindirana kumhanya kwegumi-pole mota ndeye 600r/min, uye iyo synchronous kumhanya kwegumi nembiri mota i500r/min.

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Nguva yekutumira: Kubvumbi-08-2023