site logo

Ua rau ntawm harmonics nyob rau hauv induction melting rauv

Ua rau ntawm harmonics nyob rau hauv induction melting rauv

Lub ntsiab Circuit Court ntawm induction melting rauv tuaj yeem siv peb-theem 6-pulse lossis rau-theem 12-pulse. Lub hom phiaj ntawm kev siv 12-pulse rectification yog kom txo qis kev sib haum xeeb siab. Vim hais tias lub transformer siv qhov sib txuas △ / ¥, 5th thiab 7th Harmonic tam sim no tshem tawm ib leeg tawm hauv lub transformer, tawm hauv me me heev 11th thiab 13th harmonics. Yog tias daim phiaj muaj peev xwm loj txaus, nws tuaj yeem ua tau raws li cov kev cai ntawm lub teb chaws tus qauv (GB / T 14549-1993). Yog li ntawd, harmonics yuav tsis raug txiav txim siab nyob rau hauv cov ntaub ntawv no. Qhov teeb meem ntawm kev kho nthwv dej: Yog tias daim phiaj muaj peev xwm me me, lub peev xwm tsis muaj peev xwm loj yog qhov loj, thiab kev sib haum xeeb cuam tshuam rau lub zog hluav taws xob, ces qhov kev kho kom haum xeeb yuav tsum tau xav txog.

Harmonics yog ntau qhov sib npaug ntawm lub zog loj zaus (50Hz). Los ntawm Fourier transform, ib tug tsis-sinusoidal muaj nuj nqi yuav decomposed mus rau hauv ntau yam sine-functional harmonic Cheebtsam, uas yog, non-sinusoidal signals yuav decomposed mus rau hauv lub hauv paus qhov chaw thiab sums los ntawm Fourier transform. Nws ntau, lub waveform nyob rau sab nraud ntawm sine zaus yog hu ua lub hauv paus tivthaiv, thiab nws teb ntawm zaus. Lub waveform saum toj no yog hu ua harmonic tivthaiv, thiab nws cov multis hu ua 3rd, 5, 7, 11, 13th thiab lwm yam harmonic Cheebtsam. Daim duab schematic ntawm ntau yam kev sib haum xeeb muaj nyob hauv daim duab 2-15.

Daim duab 2-15 Schematic daim duab ntawm ntau yam harmonic yam ntxwv