Chifukwa chiyani magineti okhazikika amagwira bwino ntchito?

Permanent maginito synchronous motor imapangidwa makamaka ndi stator, rotor ndi zida zanyumba.Monga ma motors wamba a AC, maziko a stator ndi mawonekedwe opangidwa ndi laminated kuti achepetse kutayika kwachitsulo chifukwa cha eddy pakali pano komanso hysteresis pakugwira ntchito kwagalimoto;ma windings nawonso nthawi zambiri amakhala magawo atatu symmetrical nyumba, koma chizindikiro kusankha ndi kosiyana kwambiri.Gawo la rotor lili ndi mitundu yosiyanasiyana, kuphatikiza maginito okhazikika okhala ndi mazenera oyambira agologolo, ndi ma rotor omangika kapena okwera pamwamba.Pakatikati pa rotor ikhoza kupangidwa kukhala cholimba kapena laminated.Rotor ili ndi maginito okhazikika, omwe nthawi zambiri amatchedwa chitsulo cha maginito.

Pansi pa ntchito yanthawi zonse ya maginito okhazikika, rotor ndi stator magnetic field zili mu synchronous state, palibe chomwe chimapangidwira mu gawo la rotor, palibe kutaya kwa mkuwa wa rotor, hysteresis, ndi kutayika kwa eddy panopa, ndipo palibe chifukwa. kuganizira vuto la kutayika kwa rotor ndi kupanga kutentha.Nthawi zambiri, injini yamagetsi yokhazikika imayendetsedwa ndi chosinthira chapadera, ndipo mwachilengedwe imakhala ndi ntchito yoyambira yofewa.Kuphatikiza apo, injini yamagetsi yokhazikika ndi injini yolumikizana, yomwe ili ndi mawonekedwe osinthira mphamvu yamagetsi yama synchronous motor kudzera mumphamvu yachisangalalo, kotero mphamvuyo imatha kupangidwa kuti ikhale yamtengo wapatali.

Kuchokera pamalingaliro oyambira, chifukwa chakuti maginito okhazikika amagetsi amayamba ndi magetsi osinthika pafupipafupi kapena chosinthira pafupipafupi, njira yoyambira yamagetsi okhazikika amagetsi ndiyosavuta kuzindikira;ofanana ndi chiyambi cha variable pafupipafupi galimoto, izo amapewa zofooka chiyambi cha wamba khola mtundu asynchronous galimoto.

Mwachidule, mphamvu ndi mphamvu ya maginito okhazikika a maginito amatha kufika pamwamba kwambiri, ndipo mapangidwe ake ndi ophweka.Msikawu wakhala ukutentha kwambiri zaka khumi zapitazi.

Komabe, kulephera kwa demagnetization ndivuto losapeŵeka kwa ma mota amagetsi okhazikika.Pamene panopa ndipamwamba kwambiri kapena kutentha kwambiri, kutentha kwa ma windings oyendetsa galimoto kumakwera nthawi yomweyo, zamakono zidzawonjezeka kwambiri, ndipo maginito okhazikika adzataya maginito awo mofulumira.Mu okhazikika maginito kulamulira galimoto, ndi overcurrent chitetezo chipangizo waikidwa kuti apewe vuto la galimoto stator mapiringidzo akuwotchedwa, koma chifukwa imfa ya magnetization ndi kuzimitsa zida n'zosapeŵeka.

Poyerekeza ndi ma mota ena, kugwiritsa ntchito ma motors okhazikika pamsika sikudziwika kwambiri.Pali ena osadziwika luso akhungu mawanga kwa onse opanga magalimoto ndi ogwiritsa, makamaka pankhani yofananira ndi pafupipafupi converters, amene nthawi zambiri kumabweretsa kupanga Mtengowo kwambiri sagwirizana ndi deta experimental ndipo ayenera kutsimikiziridwa mobwerezabwereza.