Motor Magnetic Field Analysis Using the Alpha Finite Element Method (αFEM).

This paper delves into the application of the alpha finite element method (α FEM) in the simulation of electromagnetic fields within electric machines, with a particular focus on permanent magnet synchronous motors. Electromagnetic simulation analysis based on the finite element method (FEM) has become a critical tool for the design and optimization of electric machines. Traditional FEM, which employ linear triangular elements, often encounter challenges regarding computational accuracy and efficiency in complex electromagnetic scenarios. α FEM, a variant within the smooth finite element method (S-FEM) family, enhances the capabilities of conventional FEM by scaling physical coordinates or strain gradients in the Jacobian matrix with an adjustable factor " α." This modification yields more precise numerical solutions, rendering α FEM particularly effective in dynamic problems such as vibration, acoustics, and plate analysis. Widely acknowledged for its stability and convergence properties, α FEM is utilized in this study to analyze computational performance in simulating the electromagnetic fields of motor. Numerical examples presented confirm that α FEM achieves higher computational accuracy with the same mesh model compared to conventional FEM. [ABSTRACT FROM AUTHOR]