AC motors tuaj yeem muab faib ua commutator-type motors, synchronous motors thiab induction motors. Ob qho tib si synchronous motors thiab induction motors yog AC motors uas nws qhov kev sib hloov ceev yog txiav txim siab los ntawm kev sib nqus sib nqus.
Lub thiaj li hu ua rotating magnetic teb ntawm no yog hais txog qhov tshwm sim uas thaum ntau theem alternating tam sim no xws li peb-theem alternating tam sim no thiab ob-theem alternating tam sim no txuas nrog stator coils, generated magnetic teb rotates ntawm qhov ceev ( {{ 4}} synchronous ceev) txiav txim los ntawm qhov zaus ntawm ntau theem alternating tam sim no.
Lub rotor tig los ntawm kev nyiam los ntawm kev sib nqus sib nqus, thiab AC motors raug cais raws li qhov sib txawv ntawm lawv txoj kev sib hloov. Rotating magnetic field type AC motors (collective term for synchronous motors and induction motors) yog roughly faib rau cov motors uas siv 2-wire tsev AC 100V raws li lub hwj chim mov thiab 3-hlau muaj AC 200V raws li lub hwj chim mov .
Yav dhau los hu ua ib-theem lub cev muaj zog, lub tom kawg hu ua peb-theem lub cev muaj zog. Tsis ntev los no, semiconductor element inverters tau txais los ntawm kev siv hluav taws xob hloov hluav taws xob los tsav peb-theem AC motors. Qhov no yog los tswj qhov voltage thiab zaus los ntawm inverter thiab ua haujlwm ntawm qhov xav tau kev sib hloov ceev thiab torque.
(1) Commutator hom lub cev muaj zog
Cov kev siv tseem ceeb yog rau lub tshuab nqus tsev nqus tsev vacuum, cov cuab yeej hluav taws xob thiab cov kua txiv hmab txiv ntoo. Ntawd yog, nyob rau hauv cov teb uas xav tau kev ua haujlwm siab nrog ib-theem AC raws li cov khoom siv hluav taws xob. Cov lus qhia dav dav muaj lub ntsiab lus tias nws tuaj yeem ua haujlwm nrog AC lossis DC (uas yog, AC / DC dual-siv). Cov qauv yog tib yam hauv txoj cai raws li DC series-zoo siab lub cev muaj zog, tab sis nyob rau hauv rooj plaub ntawm AC, cov xwm txheej hauv qab no yuav tsum tau xav txog.
(2) Synchronous lub cev muaj zog
Lub cev muaj zog synchronous yog lub cev muaj zog uas nws qhov kev sib hloov ceev yog tib yam li qhov ceev synchronous.
