Ka'idar firikwensin wutar lantarki ya ƙunshi canza sigogin wutar lantarki kamar na yanzu da ƙarfin lantarki zuwa siginonin lantarki masu aunawa, da samun ma'aunin da ake buƙata ta hanyar sarrafawa. Mai zuwa shine cikakken mataki{1}}ta{2}} bayanin mataki na ƙa'idar aikinsa:
1. Ka'idodin aunawa na yanzu
Hanyar Shunt resistor: Ta hanyar haɗa ƙaramin juriya (shunt) a jere, ana auna ƙarfin lantarkin da ke cikin resistor. Yana da amfani ga DC ko ƙananan - mitar AC ta amfani da dokar Ohm, amma babban halin yanzu na iya haifar da dumama.
Hall Effect Sensor: Ana amfani da filin maganadisu da ke kusa da na yanzu{0}}wanda aka yi amfani da shi don sanya ɓangaren Hall ɗin ya haifar da ƙarfin lantarki daidai da na yanzu don cimma ma'aunin lamba. Ya dace da AC/DC kuma yana da keɓe mai kyau.
Transformer na yanzu (CT): Dangane da shigar da wutar lantarki, yana canza babban halin yanzu a gefen farko zuwa ƙarami a gefen na biyu. Yana aiki ne kawai ga ma'aunin AC.
Rogowski coil: A toroidal coil without a Magnetic core. Yana fitar da wutar lantarki ta hanyar haifar da canjin canji na yanzu kuma yana samun halin yanzu bayan haɗin kai. Ya dace da babban -yawanci ko babba{3}} yanayin AC na yanzu kuma yana da ƙarfi mai ƙarfi-saturation.
2. Ƙa'idar auna wutar lantarki
Hanyar rarraba wutar lantarki ta Resistor: Ta hanyar hanyar sadarwa mai rarraba wutar lantarki mai ƙarfi, ana auna babban ƙarfin lantarki da aunawa. Maɗaukaki{1}}madaidaici, ƙananan -masu zafin zafi ana buƙatar.
Wutar lantarki (PT): Kama da CT, yana canza babban ƙarfin lantarki zuwa ƙananan ƙarfin lantarki kuma ya dace da tsarin AC.
Hanyar rarraba wutar lantarki ta Capacitor: Ana auna babban ƙarfin lantarki ta amfani da mahaɗar wutar lantarki, wanda ya zama ruwan dare a mafi girma{0}mita ko yanayin ƙarfin bugun bugun jini.
3. Kwadi da sarrafa sigina
Ƙarawa da tacewa: Yi amfani da amplifiers masu aiki don haɓaka sigina masu rauni da amfani da ƙananan filtata{0} don kawar da hayaniyar mai girma{1}.
Analog -zuwa{1}}juyawar dijital (ADC): Canza sigina na analog zuwa sigina na dijital, kuma adadin samfurin dole ne ya cika ka'idar Nyquist (aƙalla sau biyu mafi girman mitar siginar).
4. Ma'aunin wutar lantarki
Samfuran ƙarfin lantarki na yanzu da na yanzu a lokaci guda, haɓaka su don samun ƙarfin nan take, da haɗa su don samun matsakaicin ƙarfin aiki. A cikin tsari guda uku{1}, ana iya amfani da hanyar mita biyu ko kuma hanyar mita uku don ƙididdige ƙarfin duka.
5. Warewa da aminci
Warewa Magnetic: Yi amfani da inductor na juna ko na'urorin haɗi na maganadisu don keɓe manyan da'irori masu ƙarancin wuta.
Keɓewar gani: Canja sigina ta hanyar haɗin kai don toshe haɗin lantarki.
Fasahar Fiber optic: Yi amfani da tasirin Faraday don auna halin yanzu, tare da kyakkyawan aikin rufewa, wanda ya dace da mahalli mai ƙarfi.