DC machines: lub hauv paus ntsiab lus ntawm kev txiav txim

Electric tshuab - ib tug ntaus ntawv rau converting hluav taws xob lub zog mus rau hauv cov neeg kho tshuab zog (thiab vice versa). Lag luam ntawm lub tshuab DC yog raws li nyob rau hauv txoj kev cai electromagnetic induction.

Feem ntau, cov chav nyob yog siv nyob rau hauv qhov kev lag luam rau traction mechanisms, xws li cranes thiab Hoists. Ib tug tseem ceeb drawback ntawm lub engine yog lub tsim ntawm coke nyob rau collector txhuam. Kom tsis txhob ntev arcing, nws yog tsim nyog los tsis tseg xyuas thiab nqa tawm txij nkawm ua hauj lwm. DC tshuab apparatus txawv los ntawm asynchronous thiab synchronous motors.

Nruab nrab ntawm lub tug, tsim ib qhov magnetic flux, lub armature yog configured nyob rau hauv daim ntawv ntawm ib tug hlau kheej kheej. Nws grooves yog stacked coils ntawm tooj liab hlau, thiab qhov xaus ntawm tus neeg xyuas pib muaj kev cob cog rau cov ib nrab-ib ncig, uas yog cais los ntawm lwm qhov chaw ntawm lub tshuab - qhov no yog ib tug collector ntawm uas tus txhuam swb. Lawv muaj kev cob cog rau ib tug sab nraud Circuit Court.

Txij li thaum lub coils ntawm ib tug electromotive quab yuam, cov thauj tog rau nkoj DC tshuab pib tig ntawm cov kev tshuam ntawm nws cov teb coils.

Vim lub fact tias cov magnetic induction yog faib uniformly nyob rau steel lub tog raj kheej, tus ceev electromotive quab yuam generated nyob rau hauv lub tam sim no ceev nyob rau hauv qhov khoob ntawm cov lem. Yog li, nyob rau hauv ib tug tshaj plaws magnetic induction tug, thiab qhov chaw thauj tog rau nkoj (nyob rau longitudinal axis) - yog pes tsawg.

Thaum DC tshuab armature rotates txhua txhua ib nrab-tig conductors polarity-ntxeev, raws li lub caij nplooj zeeg nyob rau hauv tus ntawm opposite tug, yog li ntawd, cov kev taw qhia ntawm cov electromotive dag zog yuam yog ntxeev, thiab yog hais tias tus EMF yog hloov nyob rau hauv lub sij hawm thiab cov kev taw qhia, ces nws yuav tsum tau muab ib tug nce mus nce los nqis. Yuav kom ib tug sab nraud Circuit Court qhov tivthaiv tuaj nyob rau hauv DC machines enabled ntaus ntawv collector. Qhov no yog - ib yam ntawm cov mus. Nyob Ruaj Ruaj txhuam, uas yog kev cob cog rua rau ib tug sab nraud Circuit Court, xaub rau cov ib nrab-ib ncig rigidly tsau rau thauj tog rau nkoj.

Spinning armature los mus kov tsuas nrog tus txhuam, uas yog nyob rau hauv ib tug polarity. Thaum lub sij hawm thaum cov kev taw qhia ntawm cov electromotive quab yuam kev hloov, nws keyboards lub rings, uas yog, hloov lub lwm Circuit Court nyob rau hauv cov kev taw qhia ntawm cov EMF tsis tshwm sim. Yog li, lub collector - qhov no yog ib tug rectifier, uas tiv thaiv kev hloov-generated tam sim no.

Nyob rau hauv thiaj li yuav tshem tawm mem ntawm lub electromotive yuam rau ntawm lub thauj tog rau nkoj yog coils uas muaj kev cob cog rau ib tug khub ntawm collector daim hlau. Lub coils yog pauv los ntawm txhua lwm yam nyob rau ib lub me ntsis lub, nws tso cai rau kom pab kom txawm peem rau distortion thiab harmonic tam sim no tsev mus rau hauv lub Circuit Court tsis muaj mem.

Yog hais tias lub DC machines khiav lag luam nyob rau hauv lub cev muaj zog hom, thaum, conversely, ib tug voltage yog thov mus rau lub txhuam. Yog li, dhau los ntawm lub collector tam sim no ntws nyob rau hauv lub coils, uas tsim nws magnetic teb. Interacting nrog cov ncej teb, lub thauj tog rau nkoj pib tig, Txawm li cas los, rau ib lub sij hawm thaum cov kev taw qhia kev sib hloov ntawm thaum dhau los ntawm lub opposite ncej conductors yuav yuav tsum tau hloov, tus collector tseem keyboards polarity. Yog li, hloov cov kev coj ntawm tam sim no , thiab yog li nws magnetic teb. Nyob rau hauv cov ntaub ntawv no, lub collector - qhov no yog qhov inverter, inverter DC rau AC.