Munayi da Matsayin Kashi da Karamin Kashi a Tsarin Kirkiro na Tauri

Don samun hankali da ake kara da shirye-shirye da tafin gwamnati na system ta zabe, ya kam ne a yi takarda na system ta zabe mai hanyar zabe.

Idan an yi sabon takarda na iya kan juna, zai iya gudana tafin gwamnati a cikin yadda ake kara da shirye-shirye na system daban-daban da kyau. Daga cewa muna sanin cewa system na da hanyar zabe, yadda ake kara da shirye-shirye da tafin gwamnati a cikin har yaduwa ce ta daidai. Yana da kyau a ni, yadda ake kara da shirye-shirye na rubututafin gwamnati bayan abu (N) da terminal na rubutu (R) shine VR.
Daga cewa haka, yadda ake kara da shirye-shirye na asalma shine VY da yadda ake kara da shirye-shirye na biru shine VB.
A cikin system ta zabe mai hanyar zabe, yadda ake kara da shirye-shirye na tafin gwamnati a cikin har yaduwa ce Vph.
∴ VR = VY = VB = Vph

Muna sanin cewa a cikin hanyar zabe, tafin gwamnati na linshi ce tafin gwamnati na yaduwa. Yadda ake kara da shirye-shirye na tafin gwamnati ce ta daidai a cikin uku yaduwan da ke kusa da IL.
∴ IR = IY = IB = IL, Idan, IR shine tafin gwamnati na R yaduwa, IY shine tafin gwamnati na Y yaduwa da IB shine tafin gwamnati na B yaduwa. Sannan, tafin gwamnati na yaduwa, Iph a cikin har yaduwa ce ta daidai da tafin gwamnati na linshi IL a cikin system ta zabe.
∴ IR = IY = IB = IL = Iph.

Idan, yadda ake kara da shirye-shirye na terminal na R da Y a cikin system ta zabe shine VRY.
Yadda ake kara da shirye-shirye na terminal na Y da B a cikin system ta zabe shine VYB<!–
Yadda ake kara da shirye-shirye na terminal na B da R a cikin system ta zabe shine VBR.
Daga takarda, ana samu cewa
VRY = VR + (− VY)
Wanda yake, VYB = VY + (− VB)
Da, VBR = VB + (− VR)
Idan, darajar da ke kara da VR da VY shine 120o(mai elektriki), darajar da ke kara da VR da – VY shine 180o – 120o = 60o(mai elektriki).

Sannan, a cikin system ta zabe, tafin gwamnati na linshi = √3 × tafin gwamnati na yaduwa.
Tafin gwamnati na linshi = Tafin gwamnati na yaduwa
Idan, darajar da ke kara da tafin gwamnati da tafin gwamnati a cikin har yaduwa shine φ, karamin zafi a cikin har yaduwa shine

Sannan, karamin zafi na system ta uku yaduwa shine

Source: Electrical4u.

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