Permanent Magnet-Assisted Synchronous Reluctance Motor for Traction Systems

This paper implements and analyses the Synchronous Reluctance Machine (SynRM) and the Permanent Magnet Assisted Synchronous Reluctance Machine (PMASR). First, tests are carried out to assess the behaviour of the SynRM machine without permanent magnets. Subsequently, the PMASR is analysed in two stages: first, with the addition of Ferrite permanent magnets, and then with the addition of Neodymium-Iron-Boron (NdFeB) magnets. The purpose is to improve SynRM's performance, making it suitable for electric traction systems. The work developed interconnects the analytical models of the SynRM and PMASR, with their finite element models, where their operational analysis is verified through temporal numerical simulations related to the speed control of these motors. This approach makes it possible to observe and study the magnetic behaviour of the machine in detail by analysing the magnetic field lines, the magnetic flux and the value of the inductances along the <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$d$</tex>-axis and the <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$q$</tex>-axis. Based on the results obtained, this work intends to provide a comprehensive understanding of the impact of different magnetic materials on the performance of the PMASR, therefore contributing to the development of more higher power density electric machines for applications in electric traction systems, particularly for applications in electric vehicles.