Force Profiles of a Linear Switched Reluctance Motor Having Special Pole Face Shapes

Abstract

In this paper, the results of a finite element analysis are carried out on an new stator geometry of a three phase longitudinal flux Linear Switched Reluctance Motor (LSRM). In the new geometry, pole shoes are affixed to the stator poles. Static and dynamic characteristics for the proposed structure have been highlighted. Motor performance for variable load conditions is discussed. Frequency spectrum analyses of force profile using the fast Fourier transform (FFT) are described to predict the vibration frequencies. The 2-Dimensional (2-D) finite element analysis (FEA) and the experimental results of this paper prove that LSRMs are one of the strong candidates for linear propulsion drives.

Keywords

• linear switched reluctance motor
• finite element analysis
• force ripple
• FFT