1. 形式一: 其中,PT为计算功率,W; Kf为波形系数,无量纲,方波时取值为4; fS为最大工作频率,Hz; Ke为磁芯截面有效系数,无量纲; Ko为窗口利用系数,一般取0.2~0.4,典型值取0.4,无量纲; BW为磁感应强度,一般为0.16~0.3T,单位为T; Kj为电流密度系数,无量纲; x为计算常数,一般取值为-0.12~-0.17,无量纲; AP为Aw和Ae两面积的乘积,cm4 2. 形式二:
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