Harmonic tshwm sim nyob rau hauv cov tshuab hluav taws xob: ua rau, cuam tshuam, thiab txaus ntshai

Kev sib haum xeebyog ib tug tseem ceeb tseem tsis tau pom feem ntau ntawm qhov tshwm sim hauv cov tshuab hluav taws xob. Lawv sawv cev rau cov distortions ntawm qhov zoo tshaj plaws Sinusoidal WaveFormform ntawm cov zaus uas yog cov zauv feem ntau ntawm cov zaus (piv txwv li 50 Hz lossis 60 HZ). Thaum muaj kev sib haum xeeb yog qhov xam tau nyob rau hauv lub zog niaj hnub, lawv txoj kev tswj tsis tau tuaj yeem ua rau muaj kev rau nyiaj txiag hnyav thiab nyiaj txiag. Kab lus no yuav tshawb txog lawv cov laj thawj, teebmeem, thiab kev pheej hmoo.

Dab tsi ua rau muaj kev sib raug zoo?

Kev sib haum xeebQhov pib tshwm sim los ntawm cov khoom tsis muaj cuab yeej-cov khoom siv uas tam sim no tsis haum nrog cov kev sib cav sib ceg. Cov qauv piv txwv suav nrog:

Cov khoom siv sib txawv (VFDs) hauv cov khoom siv hluav taws xob (E. cov khoos phis tawj, hloov kho lub zog txuas ntxiv), thiab hluav taws xob lub tsheb them. Cov thauj khoom no cuam tshuam kev ntws tawm tam sim no, ua kom cov waveforms distorms. Piv txwv li, ib tus VFD tuaj yeem kos duab tam sim no nyob rau hauv cov puls ntev dua li kev sib txuas lus xws li thib 3), 550 (350 hz) Harmonics.

Dab tsi yog qhov cuam tshuam ntawm kev sib haum xeeb?  

Kev sib raug zoo tsis txaus ntseeg lub zog zoo thiab yaum cov nqi sib txawv ntawm lub zog hluav taws xob:  

Kev sib haum xeeb ua rau lub zog poob thiab nce nqi. Piv txwv li, thib tsib-garonic hlob yuav ua rau muaj txog 15% cov zog pov tseg ntxiv hauv kev faib tawm (USS chaw haujlwm tshawb fawb hluav taws xob). Qhov kev ua tau zoo no tuaj yeem ua rau cov nqi hluav taws xob siab dua.  

Nws tuaj yeem ua rau cov khoom puas tsuaj thiab txo lub neej, raws li Harmonic Durtrents Generdy dej ntws thiab hysteresis kev poob, ua rau overheating. Transformers ua hauj lwm hauv cov chaw siab phem ib puag ncig tej zaum swb 30-50% nrawm dua li lawv cov nyiaj nyob hauv lub neej. Ib qho ntxiv, Harmonics tuaj yeem ua rau resonance, ua rau capacitor ntau dhau thiab muaj peev xwm tawg lossis hluav taws kub. Tsis tas li ntawd, nyob rau hauv peb-theem systems, thib peb, 9th, thiab lwm yam) ua rau ntawm txoj kab nruab nrab, muaj feem ua rau nws overheat.  

Kev sib haum xeeb kuj tseem tuaj yeem ua rau kev cuam tshuam ua haujlwm, tshwj xeeb hauv cov khoom siv rhiab xws li cov cuab yeej kho mob, kuaj cov ntaub ntawv, lossis cov ntaub ntawv chaw cia siab tias kev vam meej lub zog huv. Kev sib txawv los ntawm Harmonics yuav ua rau cov khoom tsis ua haujlwm, cov ntaub ntawv kev noj nyiaj txiag, lossis tsis muaj txiaj ntsig.

Ua raws cai thiab kev nyab xeeb kev txaus ntshai cuam tshuam nrog kev sib raug zoo yog qhov tseem ceeb. Tshaj dhau qhov kev txwv phem tau teev tseg hauv cov qauv xws li IEEE 519-2022 tej zaum yuav ua rau cov kev nplua. Tsis tas li ntawd, cov cuab yeej siv tshuab overheating tuaj yeem tsim kev phom sij tua hluav taws thiab kev phom sij kev nyab xeeb.

Raws li kev tsim cov kws tshaj lij kev lag luam thiab chaw muag khoom, peb muab cov khoom lag luam zoo. Yog tias koj txaus siab rau peb cov khoom lossis muaj lus nug, thov koj xavTiv Tauj Peb.