Development of DC Linear Permanent Magnet Machine Based on Multi-Layered Core-less Structure

摘要

In this paper, a new DC linear permanent magnet machine (LPMM) with multi-layered structure is proposed. This motor can realize high thrust density in the middle layer owing to the core-less structure. Since it alternately stacks permanent magnet modules and winding modules, it can adjust the thrust characteristics by changing the number of layers. In this paper, the basic concept of the proposed motor is firstly introduced. Secondly, the mathematical modelling of the proposed motor is shown. Then, the FEM analysis verifies the stacking effect in the multi-layered structure. Furthermore, the prototype is shown and the proposed motor is validated by experimental results. The observed difference among mathematical results, analysis results, and experimental results is discussed.