Fig. 1. Equivalent flux tube and magnetic equivalent circuit model

Fig. 2. Magnetic equivalent circuit unit of active components

Fig. 3. 3-D magnetic equivalent circuit unit

Fig. 4. Toroidal magnetic core and its main dimensions

Fig. 5. B-H curve and μ_r-H curve of the material of the toroidal magnetic core at 25 ℃

Fig. 6. Toroidal magnetic core model based on MECN

Fig. 7. Iterative steps for solving the toroidal magnetic core model

Fig. 8. Variation of inductance of toroidal magnetic core model with air domain edge lengths

Fig. 9. Convergence curve of MECN

Fig. 10. Toroidal magnetic core model based on FEA

Fig. 11. Relative permeability distribution of the toroidal magnetic core model

Fig. 12. Vector distribution of magnetic induction along the direction of the uniform orthogonal magnetic field of the toroidal magnetic core model

Fig. 13. Magnetic induction intensity distribution of the toroidal magnetic core model

Fig. 14. Comparison of equivalent inductance calculation results between MECN and FEA