題目 有兩個負載S1和S2並聯 ...略
For the phasor circuit shown in fig, the complex powers consumed by
the two loads are described as follow.The first load consumes 100kVA
with a lagging power factor of 0.8.The second load dissipates 20kW
with an impedance angle of tan^-1 2(Lagging). If the amplitude of Vs
is 1kV,determine the amplitude of Is.
想問題目這段
The second load dissipates 20kW with an impedance angle of
tan^-1 2(Lagging).
解答 L2: P2 = 20kW ; Q2 = 40kVAR(lag)
請問這個 Q2 = 40kVAR 是怎麼算出來的??
還有 解答 QT = Q1 + Q2 = 60 + 40 = 100kVAR
但是照理說並聯不是應該要相減嗎? 也就是 QT = 60 - 40 = 20kVAR
那QT相加的原因是為什麼??
謝謝感謝~
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※ 編輯: lwhs 來自: 122.121.183.237 (09/01 17:39)