Structural numerical and experimental comparison of an in-wheel motor dedicated for electric scooter application

This paper describes a structural behavior of a permanent magnet synchronous machine (PMSM), used to propel an in-wheel motor, namely an electric scooter. Since the rotor and the stator core are under electromagnetic force influence, both parts of the machine are separately analyzed. This analysis is carried out in order to observe the mode shapes of the PMSMS, produced by radial forces. These mode shapes represent, in part, the image of the vibration and noise produced by the PMSM - which is the authors' intention to evaluate finally. The analysis is carried out, firstly, by using LMS Virtual. Lab software; here, based on an appropriate discretization one can investigate, on a larger frequency range, the mode shapes of the structure. Next, the experimental mode shapes are evaluated by performing the so called impact testing. The comparison of the numerical and experimental results depicts the consistency of the work.