Izwi rekuti "harmonics" ishoko rakakura uye rinoshandiswa mumaindasitiri mazhinji akasiyana.Zvinosuruvarisa, mamwe matambudziko emagetsi anopomerwa zvisiri izvo pane harmonics.Aya maharmonics haafanire kuvhiringika neredhiyo frequency interference (RFI), inoitika pama frequency akanyanya kupfuura maharmonics.Power line harmonics yakaderera, nekudaro haikanganise neasina waya maLAN masiginecha, nharembozha, FM kana AM maredhiyo, kana chero mudziyo unonyatso kunzwisiswa nepamusoro-frequency ruzha.
Harmonics inokonzerwa nemitoro isina-mutsara.Nonlinear mitoro haikweve ikozvino sinusoidally kubva kune yekushandisa.Mienzaniso yezvisiri-mutsara mitoro inosanganisira maVFD, EC mota, mwenje we LED, mafotokopi, makomputa, asingachinjike magetsi emagetsi, materevhizheni, uye mazhinji emagetsi anosanganisira magetsi.Izvo zvinonyanya kukosha zvinokonzeresa zveharmonics muchivako kazhinji zvisiri-mutsara, matatu-chikamu simba, uye iro rakawanda simba riripo, iyo yakakura iyo harmonic currents mune network ichave.Chikamu chinotevera chinoongorora magetsi
maitiro eVFD.Izvi ndezvekuenzanisira muenzaniso wemutoro usina mutsara.Iyo inonyanya kufarirwa VFD dhizaini inoshanda nekutora matatu-chikamu AC mutsara wekupinza voltage uye kugadzirisa voltage kuburikidza nedhiodhi.Izvi zvinoshandura voltage kuita yakatsetseka DC voltage pabhangi rema capacitor.Iyo VFD inozoshandura iyo DC kudzoka kuita AC waveform yemota kuitira kudzora kumhanya, torque uye kwakanangana nemota.Iyo isiri-mutsara yazvino inogadzirwa neatatu-chikamu AC-to-DC kugadzirisa.Matambudziko anokonzerwa nekukanganiswa kweharmonic Mazinga epamusoro ekukanganiswa kweharmonic mune imwe nzvimbo anogona kugadzira matambudziko mazhinji.Mamwe ematambudziko anogona kusangana ndeaya:
• Kukundikana nguva isati yakwana uye kuderedzwa kwehupenyu hwezvishandiso zvinowanzoitika kana kupisa kuripo, senge: - Kupisa kwemagetsi emagetsi, tambo, macircuit breaker uye fuse.
-Kuwedzeredza kwemamotor ayo anofambiswa zvakananga kuyambuka mutsara
• Nzendo dzinoshungurudza dzezvimedu uye fuse nekuda kwekuwedzera kupisa uye harmonic loading
• Kusagadzikana kushanda kwemajenareta ekuchengetedza
• Kusagadzikana kushanda kwemagetsi emagetsi anoda yakachena sinusoidal AC waveform
• Magetsi anopenya
Kune nzira dzakawanda dzekudzikisa maharmonics uye hapana "saizi imwe inokodzera zvese" mhinduro.Noker Electric inyanzvi mutengesi weinoshanda harmonic sefauyestatic var jenareta.Kana pane mubvunzo nezve harmonic, tapota taura Noker Electric, tichakupa mhinduro kwauri.
Nguva yekutumira: Aug-28-2023