Double-2D

Precise and efficient winding loss calculation is critical for optimizing high-frequency magnetic components. While three-dimensional (3D) finite element method (FEM) provides accuracy, its computational demands limit practical applications. Conventional two-dimensional (2D) FEM, though computationally efficient, fails to balance calculation accuracy and efficiency. This paper develops a double-2D electromagnetic simulation methodology achieving 3D-equivalent accuracy through magnetic potential equivalence in the air gap location. The proposed double-2D approach can be applied to any core structure: (1) Synthesis modeling for symmetric structures. (2) Magnetic potential compensation for complex asymmetric structures. A deviation of less than 5% from measured results was observed in the experimental validation, and a 130-fold acceleration was achieved, resolving the accuracy\u2013efficiency trade-off in 3D FEM simulations. The proposed double-2D simulation technique provides practical significance for high-frequency magnetic device design, particularly in GaN\/SiC-based power converters.