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高等電機機械-期中報告 指導老師:秦純 學號： M9920103 學生：李昆紘 一電壓方波的頻率為60Hz，正負振幅大小為E，使用在 線圈為100閘截面積為 的鐵心上 <A>.畫出電壓曲線的週期以及λ Φ的波形曲線 Φ=BA= ×1.15 λ=NΦ=1.4375 1.17 An inductor is to be designed using a magnetic core of the form of that of fig1.29.The core is of uniform cross-sectional area Ac=5.0cm and of mean length lc=25cm. Calculate the air-gap length g and the number of turn N such that the inductance is 1.4mH and so that inductor can operate at peak currents of 6A without saturating. Assume that saturation occurs when the peak flux density in the core exceeds 1.7Tand that, below saturation ,the core has permeability μ=3200μ0 For an inductor current of 6A,use Eq3.21 to calculate (i) the magnetic stored energy in the air gap and (ii) the magnetic stored energy in the core. Show that the total magnetic stored energy is given by Eq1.47