Abstract
Permanent magnet synchronous machines (PMSMs) are widely used in a variety of applications. Dynamic eccentricity of the rotor is one of the obstacles in the manufacturing process. This obstacle causes an imbalanced electromagnetic force and causes unexpected vibrations. In this research, the effect of dynamic eccentricity on the temporal and spatial harmonic distribution of electromagnetic force and vibration are investigated. Moreover, compensation methods have been proposed to suppress the vibrations due to dynamic eccentricity by using multi-sector and multi-phase motor. The compensation current is obtained by optimization. The effectiveness of the proposed method is verified by finite element analysis (FEA).
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