Lo lus Askiv rau lub cev muaj zog tam sim no tuaj yeem ua luv luv li DC lub cev muaj zog. Yog li ntawd, nws tseem hu ua DC lub cev muaj zog. Lo lus no kuj siv nyob rau hauv phau ntawv no.
Lub torque ntawm DC lub cev muaj zog yog proportional rau cov khoom ntawm lub magnetic teb lub zog generated los ntawm lub stator thiab tam sim no ntws mus rau lub rotor. Qhov sib nqus flux tsim los ntawm excitation ntawm stator yog hu ua teb flux.
Ntawm qhov tod tes, qee zaum lub rotor hu ua armature, thiab nws tam sim no hu ua armature tam sim no. Amateur tsis txhais hais tias armature tab sis yog ib qho cuab yeej uas tsim cov khoom siv tam sim no los tsim cov torque.
DC motors tuaj yeem muab faib ua ob hom: cov hlau nplaum ruaj khov excitation hom uas siv cov hlau nplaum ruaj khov thiab hom electromagnetic excitation uas tsis siv cov hlau nplaum tas mus li.
[1]-(1) DC lub cev muaj zog tas mus li
Permanent-magnet excitation type DC motor (permanent-magnet DC motor) yog lub cev muaj zog uas siv cov hlau nplaum ruaj khov, nrog rau cov motors rau cov qauv thiab cov motors rau automotive auxiliary engines, thiab lwm yam. Nws yog lub cev muaj zog tshaj plaws hauv lub ntiaj teb.
Permanent magnet excitation type DC motor yog muab faib ua peb hom nram qab no raws li daim ntawv ntawm armature (rotor).
① (hom slotted)
② (slotless hom)
③ (hom tsis muaj)
(2) winding-field DC lub cev muaj zog
Lub cev muaj zog uas tsim cov kab hluav taws xob excitation siv lub tshuab hluav taws xob yog qhia hauv daim duab 1.5. Lub winding-field DC lub cev muaj zog ntawm hom electromagnet excitation yog tsuas yog siv nyob rau hauv nruab nrab-qhov loj thiab cov khoom loj nrog cov zis ntawm 1 horsepower (kwv yees li 750W). Raws li qhov sib txawv ntawm kev sib txuas ntawm cov hlau nplaum coil thiab armature coil, nws tuaj yeem muab faib ua peb hom hauv qab no.
