A novel double-sided permanent magnet linear synchronous motor (PMLSM) is proposed in this paper, which forms a three-phase balanced structure by arranging a specific distance between the single phase-group concentrated-coil (PGCC) windings. First, the model of the double-sided PMLSM is established. Then, the air gap magnetic field and operating principle of the proposed motor are theoretically analyzed. Finally, based on the analysis of the air gap magnetic field, the cogging normal force of the proposed PMLSM is theoretically analyzed and verified by the finite element method (FEM).

Cogging normal force analysis， double-sided， linear motor， phase-group concentrated coil