Hluav taws xob cov Motors lwm yam thiab Electromagnetic Fields

Lub coil nqa tam sim no generates ib magnetic teb nyob rau hauv lub kauj. Cov kev taw qhia thiab qhov loj ntawm qhov chaw sib nqus no sib txawv nrog cov kev taw qhia thiab qhov loj ntawm qhov tam sim no.

Ib qho yooj yim DC lub cev muaj zog muaj cov hlau nplaum ruaj khov ntawm lub stator thiab ib qho armature uas muaj ib los yog ntau dua ntawm cov coil hlau. Lub coil hlau yog insulated (enameled hlau), thiab ib tug mos ferromagnetic core nyob rau hauv lub kauj kom mloog zoo rau cov magnetic teb. Lub kauj feem ntau tig ntau zaus nyob ib ncig ntawm lub hauv paus; cov motors loj tuaj yeem muaj ob peb txoj hauv kev tam sim no nyob rau hauv lub kauj. Lub xaim ntawm qhov kawg ntawm lub kauj yog txuas nrog lub commutator. Lub commutator, nrog rau cov khoom siv hluav taws xob sab nraud thiab txhuam, hloov cov kev taw qhia ntawm tam sim no nyob rau hauv lub kauj thaum nws tig (brushless DC motors siv hluav taws xob circuitry los hloov cov kev taw qhia ntawm DC tam sim no, yog li tshem tawm qhov xav tau ntawm txhuam).

Lub zog ntawm electromagnetic teb thiab tus nqi ntawm tam sim no generated los ntawm armature nyob ntawm seb qhov luaj li cas ntawm lub kauj thiab txoj kev winding.

Cov kab ke uas cov coils tshwj xeeb raug qhib lossis tawm txiav txim siab cov kev taw qhia ntawm cov khoom siv hluav taws xob zoo. Lub rotating magnetic teb yuav raug generated los ntawm sequentially tig lub coils rau thiab tawm. Kev sib cuam tshuam ntawm cov hlau nplaum sib nqus thiab cov hlau nplaum tsim los ntawm cov hlau nplaum stator (cov hlau nplaum tas mus li los yog electromagnet) ua rau lub armature tsim torque, ua rau nws tig. Qee lub DC motors siv electromagnets los tsim ib qho chaw sib nqus hauv lawv cov stators, uas txhim kho kev tswj lub cev muaj zog.

Siab dua - lub zog DC lub cev muaj zog yog txias los ntawm cua txias.

Txawv stator ncej tooj, armature magnetic teb, thiab interconnections ua rau txawv ceev / torque yam ntxwv. Qhov ceev ntawm DC lub cev muaj zog tuaj yeem hloov kho los ntawm kev hloov qhov voltage ntawm lub armature. Kev tswj ceev tuaj yeem ua tiav los ntawm kev ntxiv armature circuitry lossis hloov pauv hloov mus rau qhov chaw tam sim no. Niaj hnub nimno DC motors yog tswj los ntawm cov hluav taws xob hluav taws xob uas kho qhov hluav taws xob los ntawm kev hloov DC tam sim no txiav tawm, hloov nws rau thiab tawm ntawm lub sijhawm ruaj khov kom tsim cov hluav taws xob qis dua.

Series qhov txhab-rotor DC motors tsim qhov siab tshaj plaws torque ntawm qis ceev thiab yog li feem ntau siv rau hauv daim ntawv thov traction, xws li electrified railways. Tau ntev, DC motors tau ua lub hauv paus traction motors rau hluav taws xob thiab diesel locomotives, streetcars / tram tsheb, thiab diesel -electric drilling rigs. Kev taw qhia ntawm DC motors thiab lub zog xa hluav taws xob sib txuas rau kev tsav tsheb hauv xyoo 1870 tau ua rau Lub Ntiaj Teb Kev Lag Luam Thib Ob. DC motors tuaj yeem siv ncaj qha los ntawm cov roj teeb uas siv tau, muab cov tsheb hluav taws xob ntxov tshaj plaws thiab tsav tsheb ntau yam khoom siv cordless. DC motors tseem tshwm sim nyob rau hauv ntau daim ntawv thov niaj hnub no, los ntawm cov khoom ua si me me lossis disk drives mus rau cov tshuab loj ua haujlwm steel dov mills thiab papermaking machines. Loj DC motors nrog shunt excitation teb tau siv nyob rau hauv lub tshuab winding ntawm kuv cranes; Thaum ua ke nrog thyristor actuators, lawv tuaj yeem tsim kom muaj lub zog loj thiab muab kev tswj kom nrawm. Cov ntawv thov tam sim no tau hloov pauv los ntawm cov AC motors loj uas tau tsav los ntawm cov zaus hloov pauv.