Research And Design Of Permanent Magnet Linear Synchronous Motors With Electromagnetic Low Speed

Permanent-magnet linear synchronous motor with electromagnetic low speed (PMLSML) is a new type of linear motor, which can be widely used in the occasion where needed linear and low-speed drive. Currently, papers which study on PMLSLM are not common yet. In this paper, we research and design of the PMLSML on basis of predecessor's product, to lay the foundation for such electrical products.The paper proposes a basic structure of the PMLSML excited by NdFeB. Through analysis of the transverse flux permanent magnet, the basic structure were improved, and then, we determine the structure of the motor.After determining the structure, refer to the rotary low speed motor designing theory, the paper proceed the electromagnetic design of PMLSML, determining the size of various parts of the motor, winding form and calculate the electrical parameters, checking the motor performance.. On this basis, two prototypes with different structures were designed.In this paper, we use the finite element method to analysis of PMLSML, and analysis two prototypes as an example. Equivalent magnetic circuit according to the principle of two-dimensional equivalent of the motor, equivalent to establish a two-dimensional model, Through static solution, we get the magnetic field distribution. Further, we process three-dimensional finite element analysis, and two prototypes of PMLSML were analyzed. We get the three-dimensional magnetic flux density of distribution in tooth gap and tooth layer. After complete analysis the magnetic field, we simulated the performances of the prototype. Using large finite element simulation software MAGNET, we simulated the static, steady state and transient characteristics of the prototypes. Through analysis the simulation results, we verified the reasonableness and feasibility of the prototype design.