Chifukwa chiyani magwiridwe antchito a maginito okhazikika ndi apamwamba kwambiri?

Mota yokhazikika ya maginito yogwirizana imapangidwa makamaka ndi stator, rotor ndi zigawo za nyumba. Mofanana ndi ma mota wamba a AC, pakati pa stator pali laminated kuti muchepetse kutayika kwa chitsulo komwe kumachitika chifukwa cha eddy current ndi hysteresis effect panthawi yogwira ntchito ya mota; ma windings nthawi zambiri amakhala ndi mawonekedwe ofanana a magawo atatu, koma kusankha kwa magawo kumakhala kosiyana kwambiri. Gawo la rotor ndi losiyanasiyana, kuphatikiza rotor yokhazikika ya maginito yokhala ndi starter squirrel-cage, komanso rotor yokhazikika ya maginito yokhazikika kapena yokhazikika pamwamba. Pakati pa rotor mutha kupangidwa ndi kapangidwe kolimba kapena kapangidwe ka laminated. Rotor ili ndi zida zokhazikika za maginito, zomwe nthawi zambiri zimatchedwa magnetic steel.

Mu ntchito yanthawi zonse ya mota ya maginito yokhazikika, maginito a rotor ndi stator ali mu mkhalidwe wogwirizana. Palibe mphamvu yoyambitsa mu gawo la rotor, motero palibe kutayika kwa mkuwa wa rotor kapena hysteresis ndi kutayika kwa eddy current. Palibe chifukwa choganizira vuto la kupanga kutentha lomwe limayambitsidwa ndi kutayika kwa rotor. Kawirikawiri, maginito okhazikika a maginito amayendetsedwa ndi ma frequency converters odzipereka, omwe mwachibadwa amakhala ndi ntchito zoyambira zofewa. Kuphatikiza apo, maginito okhazikika a maginito ndi maginito ogwirizana ndipo ali ndi mawonekedwe a maginito ogwirizana kotero kuti mphamvu imatha kusinthidwa ku mtengo womwe watchulidwa kudzera mu mphamvu ya chisangalalo. Chifukwa chake, mphamvu imatha kupangidwa ku mtengo wofunikira.
Poganizira zoyambira, chifukwa cha momwe ma mota a maginito okhazikika amayambitsidwira ndi magetsi osinthira ma frequency kapena ma frequency converters ofanana, njira yoyambira ma mota a maginito okhazikika ndi yosavuta kuchita; mofanana ndi kuyambitsa ma mota a maginito osinthira ma frequency, imapewa zolakwika zoyambira za ma mota wamba a asynchronous-cage a squirrel-cage.

Pomaliza, mphamvu ndi mphamvu ya ma mota a maginito okhazikika zimatha kufika pamlingo wapamwamba kwambiri. Kapangidwe kawo ndi kosavuta ndipo akhala otchuka kwambiri pamsika m'zaka khumi zapitazi. Komabe, vuto la demagnetization ndi vuto losapeweka la ma mota a maginito okhazikika. Pamene mphamvu yamagetsi ili yayikulu kwambiri kapena kutentha kuli kwakukulu kwambiri, kutentha kwa injini kudzakwera kwambiri nthawi yomweyo, mphamvu yamagetsi idzawonjezeka kwambiri, ndipo maginito okhazikika adzachepa mofulumira. Poyang'aniridwa ndi ma mota a maginito okhazikika, chipangizo choteteza mphamvu yamagetsi yochulukirapo chimayikidwa kuti chipewe vuto la stator winding ya mota kutha. Komabe, izi mosakayikira zimapangitsa kuti magetsi asamawonongeke komanso kuti zida zizimitsidwe.