Influence of Stator Core Manufacturing Displacement on the Electromagnetic Performance of Modular Permanent Magnet Machine

This paper investigates the influence of various manufacturing tolerances of modular stator core, including radial, circumferential and axial displacements, on the electromagnetic performance of modular permanent magnet machine. The no-load back electromotive force, cogging torque and unbalanced magnetic force are calculated for a single module under the same displacement amplitude fault. The results reveal the influence of typical displacements on electromagnetic performance, which can provide a reference for motor design and analysis.