Lub inverter lub teeb liab tso zis puas tuaj yeem ntsuas los ntawm kev siv multimeter?
Nws nyob ntawm lub hom phiaj ntsuas thiab ntsuas lub hauv paus ntsiab lus ntawm multimeter:
1, feem ntau peb hais tias inverter tso zis 380V, 50Hz, hais txog nws lub hauv paus nthwv dej (sine yoj) rau 380V, 50Hz. inverter qhov tseeb tso zis waveform rau PWM nthwv dej, ntxiv rau lub hauv paus nthwv dej, tab sis kuj muaj cov teeb liab xaim hluav taws xob. Cov kab hluav taws xob cov kab hluav taws xob muaj ntau dua li qhov tseem ceeb nthwv dej, thiab yog lub teeb liab yoj square, muaj ntau qhov sib haum xeeb siab.
2, zoo tib yam multimeter tuaj yeem ntsuas 45 ~ 66Hz lossis 45 ~ 440Hz AC sine yoj. Ib feem ntawm qhov tseeb rms multimeter ntsuas qhov ntau zaus yog qhov dav dua, ntau tus neeg xav tias tuaj yeem siv rau kev ntsuas zaus, kuaj. Qhov tseeb, nws tsis yog, vim hais tias hom lus ntsuas no tau ua rau lub hauv paus nthwv dej thiab cov neeg nqa khoom nthwv dej suav nrog. Piv txwv li, qhov saum toj no zaus converter, 380V tso zis, qhov ntsuas tau feem ntau yog ntau tshaj 400V.
3, rau inverter ntsuas ntsuas yuav tsum muaj nyob rau hauv ntau yam ntawm PWM waveforms nyob rau hauv lub decomposition ntawm nws lub hauv paus waveform muaj peev xwm, nruj ntsuas yuav tsum tau siv nyob rau hauv txoj kev ntawm cov teeb liab ua, uas yog, high-speed sampling kom tau raws li cov qauv, thiab tom qab ntawd cov qauv ua ntu zus ntawm qhov tsis sib xws Fourier hloov pauv, kom tau txais cov qauv waveform muaj qhov amplitude, theem thiab qhov sib haum xeeb ntawm lub amplitude thiab theem.
4, kuj tseem muaj txoj hauv kev xav tias qhov ntsuas qhov nruab nrab ntawm tus nqi tuaj yeem hloov pauv rau qhov txiaj ntsig zoo ntawm lub hauv paus waveform tivthaiv ntawm inverter tso zis PWM teeb liab.
Quasi-nruab nrab tus nqi (MEAN) yog theoretically sib npaug rau qhov tseeb RMS ntawm sine yoj, sib npaug rau qhov tseem ceeb RMS ntawm lub sinusoidally modulated PWM waveform, thiab yooj yim rau kev paub; Yog li ntawd, MEAN yog siv los hloov RMS ntawm qhov zoo sib haum xeeb (RMS) lossis qhov tseem ceeb RMS ntawm PWM (H01) kev ntsuas hauv ntau qhov ntsuas thiab ntsuas.
Txawm li cas los xij, nyob rau xyoo tas los no, kev hloov pauv hloov ceev tswj thev naus laus zis tau hloov pauv sai, daim ntawv thov ntawm cov tsis-sinusoidal modulation PWM yog ntau thiab ntau, thiab, cov neeg siv inverter feem ntau tsis paub tias hom kev hloov pauv siv li cas hauv lawv tus kheej inverters, MEAN tus nqi nyob rau hauv PWM kev ntsuas ntawm cov kev txwv tau loj thiab loj dua.
5, AnyWay broadband fais fab kev ntsuas qhov system rau tus neeg siv los muab cov kws tshaj lij rau kev ntsuas zaus, ntsuas, suav nrog cov ntsuas ntsuas thiab ntsuas, suav nrog kev daws tag nrho.
AnyWay nyob rau hauv lub high-ceev sampling raws li cov qauv ntawm cov teeb liab spectrum tsom xam, real-time kev ua hauj lwm ntawm lub teeb liab ntsuas ntawm lub hauv paus RMS (H01), txoj kev muaj feem xyuam rau txhua txoj kev hloov kho ntawm PWM teeb liab thiab lwm yam arbitrary sinusoidal, tsis-sinusoidal signals. ntawm RMS test.
AnyWay siv qhov kev xeem RMS tseem ceeb raws li hom kev sim ntsuas, thiab tib lub sijhawm, muab qhov tseeb RMS, ntsuas qhov ntsuas (MEAN), txhais tau tias kho (RMEAN), tus lej lej (DC, feem ntau yog siv rau DC ntsuas) thiab lwm yam kev ntsuas rau cov neeg siv khoom siv.
