Instantaneous thrust control of linear switched reluctance motors with segmental translator

Abstract

The Linear Switched Reluctance Motor (LSRM) enjoys all the advantages of rotary switched reluctance machines including a simple and rugged structure, absence of magnetic material and windings on translator, high reliability, and appropriate performance over a wide range of speeds. Like the rotary switched reluctance motor with a segmental rotor, the Segmental Translator Linear Switched Reluctance Motor (STLSRM) has the capability to produce higher output power/weight than the conventional linear switched reluctance motors. Due to high advantages of the STLSRM drive, various control algorithms including current control, model predictive control, direct force control, universal control, and force distribution function are investigated for the first time to control the instantaneous thrust of this motor. By applying these algorithms to a typical threephase STLSRM, simulation results are presented and they are compared from the force ripple reduction point of view.