題組內容

1.6極三相同步發電機之每相輸出瞬時電壓(e)＝359.2sin(377t)，供應某6極，轉差率(S)＝3%，效率(eff)＝90%輸出為15.087Kw的三相感應馬達。此時的瞬時電流(i)＝25.4√2Sin(377t－30ﾟ)。試求

註：

e = EMSin θ = \(\sqrt{2}\)ESin ωt = \(\sqrt{2}\)ESin2 πft

i = IMSinθ = \(\sqrt{2}\)ISinωt = \(\sqrt{2}\)ISin2 πft

發電機之輸出功率\((\text{P}) = 3\text{E}_{\text{p}}\text{I}_{\text{p}}\text{Cos}\theta\)

cosθ為功率因素，

且θ=377t-(377t-30ﾟ)=30ﾟ

 (1)發電機頻率(f)＝？