Sababaha harmonics ee foornooyinka dhalaalinta induction

Wareegga ugu weyn ee foornada dhalaalka induction waxay isticmaali kartaa saddex-waji 6-pulse ama lix-waji 12-pulse. Ujeedada isticmaalka 12-pulse rectification waa in la dhimo hab-raaca sare ee harmonics. Sababtoo ah transformerku wuxuu isticmaalaa isku xirka △/¥, 5th iyo 7th Harmonic currents ayaa kansal gareeya midba midka kale ee ku jira transformerka, isaga oo ka tagaya 11th iyo 13th harmonics. Haddii awoodda xabaggu ay ku filan tahay, waxay buuxin kartaa shuruudaha heerka qaran (GB/T 14549-1993). Sidaa darteed, harmonics lagama yaabo in loo tixgeliyo kiiskan. Dhibaatada daaweynta mowjadaha: Haddii awoodda shabakadu ay yar tahay, awoodda culeyska aan tooska ahayn waa weyn tahay, iyo harmonics waxay si dhab ah u saameeyaan nidaamka sahayda korantada, markaa daaweynta iswaafajinta ayaa loo baahan yahay in la tixgeliyo.

Harmonics waa dhufashada inta jeer ee korontada ugu weyn (50Hz). Iyada oo loo marayo beddelka Fourier, shaqada aan sinusoidal ahayn waxaa loo kala qaybin karaa qaybo badan oo sinaha-shaqo leh, taas oo ah, calaamadaha aan sinusoidal-ka ahayn waxaa loo kala qaybin karaa qaybo aasaasi ah iyo wadaryo by Fourier transform. Badankeeda, qaabka mawjada ee ka baxsan soo noqnoqoshada sinaha waxaa loo yaqaanaa qaybta aasaasiga ah, waxayna ka jawaabtaa inta jeer. Waveform-ka sare waxa loo yaqaannaa qaybta harmonic, dhufaansana waxa loo yaqaan 3rd, 5th, 7th, 11th, 13th and other harmonic components. Jaantuska jaantuska ee sifooyinka iswaafajinta kala duwan ayaa lagu muujiyay sawirka 2-15.

Jaantuska 2-15 Jaantuska jaantuska ee sifooyin is-waafajin oo badan