Njira Yothandizira Kuthamanga kwa Magalimoto Osaphulika mu Stator Winding

Ma stator windings a ma mota osaphulika ali ndi mavuto a short-circuit, makamaka kuphatikiza interphase short-circuit (three-phase kapena two-phase short-circuit) ndi inter-turn short-circuit, zomwe nthawi zambiri zimachitika chifukwa cha kuwonongeka kwa insulation. Pankhani ya izi, njira zoyenera ziyenera kutengedwa kuti zithetsedwe kuti zipewe kuwonongeka kwa mota kapena ngozi zachitetezo.

Chithandizo cha ma circuit afupi apakati: Pamene ma circuit afupi apakati achitika, chifukwa cha kuchepa kwa kuchuluka kwa ma turns ndi kusintha kwa slip, kulephera kwa injini kumachepa, ndipo mphamvu zamagetsi kuchokera ku magetsi zimawonjezeka mofulumira. Pofuna kupewa kuchulukira kwa injini ndi kuwonongeka kwa ma winding, ntchito yosamalira nthawi zonse ndiyo kudula mphamvu mwachangu, monga kutseka circuit breaker kapena fuse. Ngati chithandizocho chachedwa, ma windings amatha kuwonongeka. Pankhani ya ma circuit afupi a magawo awiri kapena atatu, ngati malo a gawo lililonse la ma circuit afupi sakugwirizana, zingayambitse ntchito ya asymmetrical ya injini, negative sequence current ndi zina zosazolowereka, zomwe zingakhudze magwiridwe antchito ndi moyo wa injini.

Chithandizo cha Interturn short circuit: Interturn short circuit imatanthauza kuchitika kwa short circuit pakati pa ma coils mu winding yomweyo. Izi zingayambitse phokoso la mota komanso kugwedezeka kosazolowereka. Njira yothandizira makamaka ndi kukonza mota mwa kukonza kapena kusintha gawo lowonongeka la winding. Nthawi yomweyo, ma winding ena amafunikanso kufufuzidwa kuti atsimikizire kuti palibe mavuto ena omwe angakhalepo.

Tiyenera kudziwa kuti interphase short circuit ya mota yosaphulika ndiyo yoopsa kwambiri, makamaka ngati imachitika kumapeto kwa stator winding. Pamene winding yafupikitsidwa pakati pa ma turns, ma turns owonongeka amatentha mofulumira, zomwe zingayambitse kuwonongeka kwa insulation kapena kutopa. Kuphatikiza apo, mota ikhoza kupanga phokoso losazolowereka, lomwe ndi chizindikiro chodziwikiratu.

Kawirikawiri, pamene kuzunguliza kwa stator kwa mota yosaphulika kukufupikitsa magetsi, gawo loyamba ndikudula magetsi nthawi yomweyo kuti mupewe kuwonongeka kwa mota kapena mavuto achitetezo. Pambuyo pake, kuyang'anitsitsa ndi kukonza bwino kumafunika kuti mukonze gawo lowonongeka la kuzunguliza ndikuwonetsetsa kuti mota ikugwiranso ntchito bwino. Ngati vutoli lili lalikulu kwambiri, lingafunike kukonza ndi kuzindikira mozama ndi akatswiri kuti atsimikizire magwiridwe antchito ndi chitetezo cha mota. Nthawi yomweyo, kuyesa ndi kukonza nthawi zonse kutenthetsa ndikofunikiranso kuti mupewe mavuto a kuzunguliza kwafupikitsa magetsi.