Ma motors ndi chimodzi mwazinthu zamagetsi zomwe zimagwiritsidwa ntchito tsiku ndi tsiku. Kodi pali kusiyana kotanima frequency motorsndi ma injini wamba wamba?
Ma motors ndi zida zamagetsi zomwe zimadalira mfundo ya electromagnetic induction kuti izindikire mphamvu zamagalimoto ndikutumiza. Ntchito yake yayikulu ndikupanga torque yoyendetsa ngati gwero la mphamvu zamagetsi kapena zamakina.
Ma motor wambandi ma frequency motors onse ndi ma asynchronous motors. Mfundo yake yogwirira ntchito: Mapiritsi a stator a injini ndi mapindikidwe a magawo atatu omwe ali ofanana mumlengalenga. Pamene gawo lachitatu la symmetrical AC pakali pano likuwonjezedwa ku mafunde a stator, mphamvu ya maginito yozungulira idzakhazikitsidwa mkati mwa injini. Mphamvu ya maginito yozungulira iyi imadula mapindikidwe a rotor, motero kumapangitsa kuti mafunde akuyenda mozungulira mozungulira. Rotor yonyamula pakali pano ipanga mphamvu yama elekitirodi pansi pakuchita kwa stator yozungulira maginito, motero imayendetsa mota kuti izungulire.
Ma motors osinthika pafupipafupi komanso ma mota wamba ma frequency motors Ma mota wamba ndiofala kwambiri, koma ubwino wa ma frequency motors ndi otani poyerekeza ndi ma mota wamba?
- Ma frequency motors amatha kugwira ntchito pama frequency otsika kwambiri komanso ma voltages. Ndipo iwo akhoza kuyamba popanda kukhudza panopa. Njira zosiyanasiyana zopangira ma braking zomwe zimaperekedwa ndi inverter zitha kugwiritsidwa ntchito pakuwotcha mwachangu kuti mukwaniritse kuyambira komanso kugwetsa pafupipafupi. Chifukwa ma mota osinthika amatha kuchita zinthu zovuta kwambiri komanso malo ogwirira ntchito mwamphamvu kuposa ma mota wamba. Chifukwa chake, ma mota osinthika amasinthasintha amakhala ndi milingo yotchinga kwambiri kuposa ma mota wamba popanga, makina oziziritsa mokakamiza (mafani oziziritsa omangidwira), mphamvu zamakina amphamvu pamapangidwe, ma rotor abwinoko komanso moyo wautali wautumiki kuposa ma mota wamba.
- Monga tonse tikudziwa, ma motors wamba amatha kugwira ntchito pokhapokha ngati ali ndi vuto50 Hz pafupipafupi mphamvu. Ngati kuchuluka kwa ma frequency ndi akulu kwambiri, mota imatha kutentha kwambiri kapena kuwotcha mota. Komabe, ma frequency motors amatha kusintha liwiro la mota pa liwiro lililonse mkati mwa liwiro popanda kuwonongeka. Munthawi yabwinobwino, ma mota osinthika amatha kugwira ntchito mosalekeza mkati mwa liwiro lovotera pamtundu wathunthu, ndipo kukwera kwa kutentha kwa injini sikungapitirire kuchuluka kwa ma calibration.
- Ngakhale ma motor frequency motere ndi okwera mtengo pang'ono kuposa ma mota wamba pamtengo, zabwino zake ndizodziwikiratu. Njira yoyendetsera liwiro la AC yosinthira pafupipafupi kuphatikiza ma frequency frequency motor imatha kupititsa patsogolo kuchuluka kwa makina odzichitira okha komanso kupanga bwino. Kuphatikiza apo, ntchito yoyambira yofewa ya ma frequency converter imachepetsanso mphamvu yamagetsi yayikulu pagulu lamagetsi pomwe ma mota wamba ayamba, ndikupulumutsa mphamvu zambiri kuposa ma mota wamba.
Pamene mitengo ya ma frequency converters ndi ma frequency frequency motors ikupitilira kutsika, kugwiritsa ntchito ma frequency motors kudzachulukirachulukira.