A study of end turn inductance calculation of BLDC motors
This paper presents the different calculating methods of stator end turn leakage inductance at brushless dc motors (BLDC) with different winding types. The calculations are carried both analytically and numerically. The results of the two dimensional (2D) calculations have been compared with the results of three dimensional (3D) ones for the same motor. Finite Element Method (FEM) is used for 2D and 3D numerical analysis.
Improved accuracy for performance prediction of synchronous reluctance motor by incorporating end turn inductance in 2-D FEM
This paper proposes an analysis to include end turn inductance in the 2-D FEA for synchronous reluctance motor (SynRM). The developed method can rapidly obtain accurate results without the need of 3-D simulation. It is also concluded that for distributed winding machines, end turns should be considered in the design stage to avoid overestimating the motor performance. In the full paper, a complete study with different inductance calculations and two ratings of SynRM will be presented as the guideline of accurate analysis of SynRM. This would be beneficial to machine designers .
Finite elements three dimensional magnetic field computation
3D modeling becomes necessary for analysis of special electromagnetic systems and also for testing the consistency of two dimensional models. In this paper, the variational formulations of magnetostatic scalar and vector potentials are reviewed. An original energy functional for non linear anisotropic vector potential with a proof of uniqueness of solution is proposed. The biggest problems remain data input and results reduction; these two problems are analysed and solutions are given with some illustrated examples.