关键词: 四面体直线电机, 同向环形绕组, 永磁同步直线电机, 运行机理分析, 电磁性能分析

Abstract: For high-performance permanent magnet synchronous linear motors required in high-end intelligent health and medical devices, a novel equidirectional toroidal winding tetrahedral linear motor ( ETW-TLM) was proposed and its operating mechanism and electromagnetic performance was studied. The harmonic characteristics of the armature magnetic field were analyzed using an analytical method, and the operating mechanism of the proposed motor was revealed based on the rotating magnetic field theory. The electromagnetic performance of the proposed motor was examined using both two-dimensional and three-dimensional finite element methods. The experimental test results validate the feasibility of the proposed motor and confirm the accuracy of the analytical findings. This study provides a reference for the topological innovation of unidirectional toroidal winding motors and offers an optimized motor topology for applications such as medical electric actuators.

Key words: tetrahedral linear motor, equidirectional toroidal winding, permanent magnet synchronous linear motor, operation mechanism analysis, electromagnetic performance analysis