Optimal Design of Flux Reversal Transverse Flux Permanent Magnet Linear Motor

Aiming at the objective to enhance the thrust while reducing the detent force, a novel flux reversal transverse flux permanent magnet linear motor(FR-TFPMLM) is proposed. Firstly, a finite element model of a stator-permanent magnet, double-sided mover structure prototype is established, and the mechanisms of thrust and detent force are explored. The improved multi-objective optimization method is employed to select dimension parameters of air gap length, stator tooth height, permanent magnet thickness, and permanent magnet width. Secondly, the Pearson correlation coefficient method, standardized regression coefficient method, and Taguchi method are employed to screen the referred parameters for the purpose of reducing the peak-to-peak value of the detent force and increasing the amplitude of the back electromotive force(EMF) under no-load condition. Finally, a prototype platform is constructed and the experimental results show that the peak-to-peak value of the detent force is reduced by 12.9%, the back EMF amplitude is increased by 13.7%, and the thrust is increased by 5.3%, which verify the feasibility of the new structure and the effectiveness of the multi-objective optimization method.