A Two-Dimensional Modeling Procedure to Estimate the Loss Equivalent Resistance Including the Saturation Effect

Area of Science:

• Electrical Engineering
• Materials Science
• Computational Electromagnetics

Background:

• Ferrite inductors are crucial components in electronic circuits.
• Accurate modeling of ferrite inductor core losses is essential for performance prediction.
• Existing modeling methods may lack computational efficiency or accuracy, especially under saturation.

Purpose of the Study:

• To develop an efficient and accurate modeling procedure for ferrite inductors.
• To estimate the core loss resistance parameter for electrical models.
• To validate the proposed method for RM ferrite cores across different operating regions.

Main Methods:

• A novel modeling procedure for time-domain excited ferrite inductors.
• Utilizing a 2D Finite Element Method (FEM) for core loss resistance estimation.
• Validation against experimental data for RM ferrite cores in linear and saturation regimes.

Main Results:

• Significant computational advantages achieved by employing a 2D FEM over 3D models.
• Accurate estimation of ferrite core loss resistance.
• Excellent agreement between computed results and experimental measurements.

Conclusions:

• The proposed 2D FEM-based modeling procedure offers an efficient and accurate approach for ferrite inductors.
• The methodology is robust and applicable to ferrite cores operating in both linear and saturation regions.
• This work provides a valuable tool for the design and analysis of inductive components.