Influence of Novel Secondary Structure on the Performance of LP-DSLIM

Since the transverse edge-end effect has impacts on the performance of the long primary bilateral linear induction motor (LP-DSLIM), especially the electromagnetic thrust, a 3D FE model of LP-DSLIM is established to simulate the performance of LP-DSLIM. In order to weaken the transverse edge-end effect, a new secondary structure is proposed, which normalizes the eddy current path by increasing the resistance of the primary and secondary coupling regions. In addition, this secondary structure can also be filled with magnetic permeable materials to reduce the electromagnetic air gap of the motor, which can greatly increase the electromagnetic thrust. In this paper, the superiority of the new secondary structure is verified by comparing and analyzing the LP-DSLIM with the traditional secondary structure and the new secondary structure.