基于改进分段等效电路的利兹线绕组交流电阻建模

Litz wire is a promising solution for reducing winding loss in high-frequency magnetics, but modeling its ac resistance remains a challenge. This article proposes the improved segmented circuit method (iSEC) for modeling the ac resistance of concentric and composite litz wires. The method approximates the twisting effect of litz wire by using segmented parallel strands that are cascaded into segme...