Bs = 390mT Br = 60mT @ 100℃ Tc = 215℃
为防止变压器出现瞬态饱和效应, 此例以低△B设计.
选 △B = 60%Bm, 即△B = 0.6 * (390 - 60) = 198mT ≈0.2 T
Step2. 确定Core 形状和规格.
1. 求core Ap以确定 size
Ap = AW*Ae=(Pt*104)/(2*ΔB*fs*J*Ku)
= [(60/0.83+60)*104]/(2*0.2*70*103*400*0.2) = 0.59cm4