AC vs DC Generator
Cov hluav taws xob peb siv muaj ob daim ntawv, ib qho yog Alternating thiab lwm yam yog Direct (txhais tau tias tsis hloov raws sijhawm). Lub hwj chim ntawm peb lub tsev muaj alternating tam sim no thiab voltages, tab sis lub hwj chim mov ntawm lub tsheb muaj tsis hloov tam sim no thiab voltages. Ob daim ntawv muaj lawv tus kheej siv thiab cov qauv ntawm kev tsim ob qho tib si, uas yog electromagnetic induction. Cov cuab yeej siv los tsim lub zog yog lub npe hu ua lub tshuab hluav taws xob, thiab DC thiab AC generators sib txawv ntawm ib leeg, tsis yog los ntawm lub hauv paus ntsiab lus ntawm kev ua haujlwm tab sis los ntawm cov txheej txheem uas lawv siv los hla cov khoom tam sim no mus rau sab nraud circuitry.
Ntau txog AC Generators
Generators muaj ob lub ntsiab lus windings, ib qho yog armature, uas ua rau hluav taws xob los ntawm electromagnetic induction, thiab lwm yam yog lub teb tivthaiv, uas tsim ib tug zoo li qub magnetic teb. Thaum lub armature txav mus rau qhov chaw, ib tug tam sim no yog induced vim lub flux hloov nyob ib ncig ntawm nws. Qhov tam sim no hu ua induced tam sim no thiab qhov voltage uas tsav nws lub npe hu ua electro-motive force. Qhov kev rov ua dua ntawm cov txheeb ze xav tau rau cov txheej txheem no yog tau los ntawm kev tig ib feem txheeb ze rau lwm qhov. Lub rotating ib feem yog hu ua rotor, thiab qhov chaw nres tsheb yog hu ua stator. Txawm hais tias armature lossis lub teb tuaj yeem ua haujlwm raws li lub rotor, tab sis feem ntau cov khoom siv teb yog siv rau hauv kev tsim hluav taws xob siab, thiab lwm yam khoom siv los ua tus stator.
Flux sib txawv nrog cov txheeb ze ntawm lub rotor thiab lub stator, qhov chaw sib nqus flux txuas rau armature sib txawv maj mam thiab hloov polarity; cov txheej txheem no rov ua dua vim kev sib hloov. Yog li cov zis tam sim no kuj hloov polarity los ntawm qhov tsis zoo mus rau qhov zoo, thiab mus rau qhov tsis zoo dua, thiab qhov tshwm sim waveform yog sinusoidal waveform. Vim hais tias ntawm qhov kev hloov pauv hloov pauv hauv qhov polarity ntawm cov zis, qhov tam sim no generated yog hu ua Alternating Current.
AC lub tshuab hluav taws xob tau siv dav rau kev tsim hluav taws xob, thiab lawv hloov pauv lub zog siv hluav taws xob los ntawm qee qhov chaw rau hauv hluav taws xob.
Ntau txog DC Generators
hloov me ntsis hauv kev teeb tsa ntawm cov chaw sib txuas ntawm lub armature tso cai rau cov zis uas tsis hloov lub polarity. Xws li lub tshuab hluav taws xob hu ua DC generator. Lub commutator yog cov khoom ntxiv ntxiv rau cov neeg sib tiv tauj.
Cov zis hluav taws xob ntawm lub tshuab hluav taws xob dhau los ua qhov sinusoidal waveform, vim yog qhov hloov pauv ntawm cov polarities ntawm thaj teb txheeb ze rau armature. Lub commutator tso cai rau kev hloov ntawm kev sib cuag terminals ntawm armature mus rau sab nraud Circuit Court. Txhuam yog txuas nrog rau lub armature tiv tauj terminals thiab cov hlua khi yog siv los khaws cov hluav taws xob sib txuas ntawm armature thiab sab nraud Circuit Court. Thaum lub polarity ntawm lub armature tam sim no hloov, nws yog countered los ntawm kev hloov kev sib cuag nrog rau lwm lub nplhaib, uas tso cai rau cov tam sim no ntws nyob rau hauv tib txoj kev.
Yog li ntawd, qhov tam sim no los ntawm lub voj voog sab nraud yog qhov tam sim no uas tsis hloov lub polarity nrog lub sijhawm, yog li lub npe ncaj qha tam sim no. Tam sim no yog lub sijhawm sib txawv tab sis pom tau tias yog pulses. Txhawm rau tiv thaiv qhov cuam tshuam ntawm qhov hluav taws xob thiab cov kev cai tam sim no yuav tsum tau ua.
Qhov txawv ntawm AC thiab DC Generators yog dab tsi?
• Ob lub tshuab hluav taws xob ua haujlwm ntawm tib lub hauv paus ntsiab lus, tab sis txoj hauv kev ntawm cov khoom tsim hluav taws xob tam sim no txuas nrog rau sab nraud Circuit Court hloov txoj kev tam sim no dhau los ntawm Circuit Court.
• AC generators tsis muaj commutators, tab sis lub DC generators muaj lawv los tiv thaiv cov nyhuv ntawm kev hloov polarities.
• AC generators yog siv los tsim cov high voltages, thaum DC generators yog siv los tsim cov voltages kuj qis.
