Monga gwero lamagetsi pazida zamagetsi kapena makina osiyanasiyana, ntchito yayikulu yagalimoto ndikuyambitsa torque yagalimoto.
Ngakhale chochepetsera mapulaneti chimagwiritsidwa ntchito molumikizana ndi ma servo motors ndi ma stepper motors, chidziwitso chaukadaulo cha ma motors chidakali chodziwika kwambiri.Chifukwa chake, sindinali woleza mtima kuwona "chidule cha ntchito yamphamvu kwambiri yamagalimoto m'mbiri" iyi.Bwererani kuti mugawane ndi aliyense.
Brushless Direct Current Motor (BLDCM) imachotsa zolakwika zomwe zidabadwa za ma motors a DC oponderezedwa ndikulowetsa ma rotor omakina ndi zida zamagetsi zamagetsi.Chifukwa chake, ma motors omwe ali ndi brushless panopa ali ndi mawonekedwe othamanga kwambiri komanso mawonekedwe ena a DC motors.Ilinso ndi ubwino wa dongosolo losavuta la kulankhulana AC galimoto, palibe commutation lawi, ntchito yodalirika ndi kukonza mosavuta.
Mfundo zoyambira ndi ma aligorivimu okhathamiritsa.
Malamulo owongolera ma mota a BLDC amawongolera malo ndi dongosolo la mota yozungulira yomwe injiniyo imayamba kukhala yokonzanso.Pakuwongolera kuwongolera kotsekeka, pali malamulo awiri owonjezera, ndiko kuti, kuyeza kolondola kwa liwiro la mota / kapena motor motor ndi chizindikiro chake cha PWM kuti chiwongolere mphamvu yotulutsa mphamvu yamagetsi.
Galimoto ya BLDC imatha kusankha mndandanda wam'mbali kapena malo oyang'anira kuti atsatire chizindikiro cha PWM molingana ndi malamulo ogwiritsira ntchito.Ntchito zambiri zimangosintha magwiridwe antchito pamlingo wodziwika, ndipo ma siginecha 6 otsatizana a PWM adzasankhidwa.Izi zikuwonetsa kusamvana kwakukulu pazenera.Ngati mugwiritsa ntchito seva yapaintaneti yomwe yatchulidwa kuti muyike bwino, ma braking owononga mphamvu kapena kubweza mphamvu, tikulimbikitsidwa kuti mugwiritse ntchito malo oyang'anira odzaza kuti mutsatire chizindikiro cha PWM.
Pofuna kukonza bwino gawo la maginito opangira maginito, galimoto ya BLDC imagwiritsa ntchito sensa ya Hall-effect kuwonetsa mtheradi woyika maginito.Izi zimabweretsa ntchito zambiri komanso ndalama zambiri.Opaleshoni ya Inductorless BLDC imathetsa kufunikira kwa zinthu za Hall, ndikusankha mphamvu yodzipangira yokha yamagetsi (induced electromotive force) ya injini kuti ilosere ndikusanthula gawo lozungulira la mota.Kugwira ntchito mopanda mphamvu ndikofunikira kwambiri pamagwiritsidwe otsika mtengo owongolera liwiro monga mafani oziziritsa ndi mapampu.Mukamagwiritsa ntchito ma motors a BLDC, mafiriji ndi ma compressor ayeneranso kuyendetsedwa popanda ma inductors.Kuyika ndi kudzaza nthawi yodzaza katundu
Ma motors ambiri a BLDC safuna PWM yowonjezera, kuyika nthawi zonse kapena kubweza nthawi zonse.Ndizotheka kuti ntchito za BLDC zomwe zili ndi izi zimangokhala ma BLDC servo motors apamwamba kwambiri, ma sine-wave olimbikitsa ma motors a BLDC, ma brushed motors AC, kapena ma PC synchronous motors.
Makina ambiri owongolera amagwiritsidwa ntchito kuwonetsa kusintha kwa ma motors a BLDC.Nthawi zambiri, transistor mphamvu linanena bungwe ntchito ngati liniya malamulo magetsi kusokoneza ntchito voteji wa galimoto.Njira yamtunduwu si yosavuta kugwiritsa ntchito poyendetsa galimoto yamphamvu kwambiri.Ma motors amphamvu kwambiri ayenera kuyendetsedwa ndi PWM, ndipo microprocessor iyenera kufotokozedwa kuti iwonetse ntchito zoyambira ndi zowongolera.
Dongosolo lowongolera liyenera kuwonetsa ntchito zitatu izi:
Mphamvu yamagetsi ya PWM yomwe imagwiritsidwa ntchito kuwongolera liwiro la mota;
Dongosolo lomwe limagwiritsidwa ntchito kusinthira mota kukhala chowongolera;
Gwiritsani ntchito mphamvu yamagetsi yodzipangira nokha kapena chinthu cha Hall kuti mulosere ndikusanthula njira ya mota yozungulira.
Kusintha kwamphamvu kwa pulse kumangogwiritsidwa ntchito kugwiritsa ntchito voliyumu yogwira ntchito yosinthika pamayendedwe amagalimoto.Magetsi oyenerera ogwirira ntchito amalumikizana bwino ndi kuzungulira kwa ntchito ya PWM.Kusintha koyenera kokonzanso kukapezeka, mawonekedwe a torque a BLDC ndi ofanana ndi ma mota a DC awa.Mphamvu yamagetsi yosinthika imatha kugwiritsidwa ntchito kuwongolera liwiro ndi torque yosinthika ya injini.
Nthawi yotumiza: Aug-05-2021