Research On Back-to-back Ω Stator Transverse Flux Permanent Magnet Linear Motor

Linear motors have received extensive attention and in-depth research due to their simple structure,high positioning accuracy,and fast response speed.It has broad application prospects in industrial equipment,rail transit and other fields.However,due to the contradiction between cogging and slot constraints in the structure of the traditional linear motor,it is difficult to fundamentally increase its output density.Therefore,this paper proposes a back-to-back-Ωstator transverse flux permanent magnet linear motor(BBΩ-TFPMLM)for the above problems,and studies the following parts.Based on the operating principle of the transverse flux permanent magnet rotating motor and the evolution idea of the linear motor,the topology of BBΩ-TFPMLM is designed and discussed,a reasonable topology of BBΩ-TFPMLM is determined,and the operating principle of BBΩ-TFPMLM is analyzed.With reference to the traditional permanent magnet synchronous motor size design,the BBΩ-TFPMLM mathematical model is established,the BBΩ-TFPMLM size calculation formula is deduced,and the relevant size parameters of the motor are calculated.The single-phase structure and the three-phase structure were modeled by Maxwell finite element simulation software,and the electromagnetic performance of the single-phase structure and the three-phase structure of BBΩ-TFPMLM was analyzed.Based on the linear motor optimization method,the influence of air gap,permanent magnet,stator slot,stator teeth and ampere turns on the electromagnetic performance of BBΩ-TFPMLM is analyzed,and the optimal size parameters of each structure of BBΩ-TFPMLM are determined.According to the optimized size parameters of BBΩ-TFPMLM,a 3D model of BBΩ-TFPMLM is drawn,and the mechanical strength of each structure of the motor is analyzed through Workbench software,which verifies the reliability of the BBΩ-TFPMLM structure during operation.Draw BBΩ-TFPMLM mechanical drawings through SW software,and manufacture a prototype according to the drawings.A prototype experiment platform was built,and the performance of the prototype was tested and compared with the simulation results.The results show that the BBΩ-TFPMLM structure proposed in this paper has high feasibility.