Time-Domain Analysis of Soft Magnetic Composite Using Equivalent Circuit Obtained via Homogenization

This paper presents a homogenized analysis of soft magnetic composite (SMC), which is composed of small iron particles embedded in insulating medium. The SMC core is modeled by uniform material with the macroscopic complex permeability which is analytically represented in frequency domain. The Cauer-equivalent circuit is synthesized from the macroscopic permeability for time-domain analysis of SMC. The proposed method is shown valid even when SMC is magnetically saturated.