Design and sensitivity analysis of axial-flux permanent magnet synchronous machine [articol]

Abstract

Design aspects of the Axial Flux Permanent Magnet (AFPM) machines are discussed in this paper. Also a particular attention is given on design and performance analysis of AFPM machine to study influence of initial design parameters, air-gap flux density, electrical loading, current density, diameter ratio on machine efficiency. A comprehensive approach is used for design of AFPM machine. Then design flowchart of AFPM machines is presented. Optimal design of axial flux permanent magnet machine with the purpose of enhancing machine efficiency is found by using genetic algorithm. A 3-phase, 11 kW, double-stage AFPM synchronous machine with two stators and rotor is designed and then three dimensional finite element analyses is performed to validate the design procedure. It is found that the results completely agree with the presented procedure. Furthermore, the influence of slot opening is investigated on performance of AFPM machines.