[W-MO-12] Comparative Evaluation of Synchronous Impedance of a 2D Model and a 3D Model


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1.Introduction

For synchronous motors, 2D simulations have been widely used because of the large computational costs, although impedance varies during operation due to its non-linear properties.
However, a synchronous motor has strong three-dimensional properties; the duct space of an iron core, winding end geometry, and other properties affect magnetic circuits, so the differences between 2D and 3D models need to be identified in advance, and their uses must be differentiated depending on the objective.
This case study makes the differences clear between 2D and 3D models by comparing the synchronous impedances obtained from the analysis results of 2D and 3D models, and shows that all simulation results are very dependent on the nonlinearity of materials.

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