Abstract

Accurate computing of the saturated inductances of Permanent Magnet Synchronous Machine (PMSM) is very important during the design process. In this paper, a new method is presented based on the B-H characteristic of the stator material and unsaturated inductances formulations. This method is used to calculate the saturated inductances of the axial flux PMSM. The synchronous inductance and all of the leakage inductances can be calculated using this method. Two motors with different slot/pole combinations are selected as the case studies. The effectiveness and accuracy of the method is confirmed by 3D Finite Element Analysis (FEA). This method can be extended to other types of electric machines comprising multi-phase winding in their armature such as induction motors and other types of synchronous motors.

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