Multi-Objective Rapid Design of a Magnetically Levitated Transverse Flux Permanent Magnet Linear Synchronous Motor

摘要

In this paper, a systematic multi-objective optimal design of a novel six DOF compact high thrust magnetically levitated transverse flux permanent magnet linear synchronous motor is investigated. Being a transverse flux in nature, analytical field equations or computationally cheap 2D models are conventionally not available which demands the use of expensive 3D finite element analysis. Furthermore, multiple objectives such as thrust, lateral and normal stiffness' as well as high number of design parameters makes optimal design a time intensive task. In the presented rapid optimal design approach, a computationally cheap but accurate surrogate model is generated using corrective response surface method by smart combination of a high fidelity 3D model and a low fidelity 2D equivalent reluctance model. Finally, a pareto front is generated using multiobjective genetic algorithm, from which desired performance design parameters are selected. The practicability and generality of the design approach is verified by a three objectives - seven design parameters case study.