Modeling of Axial Flux Permanent Magnet Synchronous Machine in Solidworks

Abstract

The thesis describes the specificity of the axial electric motor with permanent magnets and compares it with a competitive radial electric motor. The main motor parameters that are key to the application of electric motor optimization are described and a table of slot and pole ratios is provided. Proper selection of the slot and pole ratio enables a high winding factor and a balanced system. The main characteristics of magnets are also described along with the method of their application within magnetic circuits in order to enable proper utilization of the magnetic mass. The application of SMC as a component of the stator of an axial electric motor is described and its advantages in application and manufacture are listed. Then, the basic equations of the electric motor are given, which show the dependence of power and torque on electrical quantities. Finally, the design of an axial electric motor with permanent magnets was carried out in the Solidworks software package and its EMS add-on. The YASA topology was chosen, which offers the advantages of shorter magnetic paths and lower losses. The selected slot-pole ratio offers a high winding factor and allows the use of optimal stator core dimensions for the selected magnetic flux. This ratio also allows the use of simple coils with smaller end windings without unnecessary accumulation of copper at too great a distance from the core. The selected magnets offer a large amount of flux with a third harmonic in the gap that will not be reflected in the gap due to the use of a star. The thickness of the plates is determined based on the ratio of the inner and outer radius and the magnetic induction in the gap in order to avoid excessive bending of the plates. By conducting simulations, it was determined that the axial electric motor offers very high values ​​of power density and efficiency with satisfactory field weakening.

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