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O principal objetivo desta dissertação consiste na implementação, análise e estudo da Máquina Síncrona de Relutância (SynRM) e do Motor Síncrono de Relutância Assistido por Magnetos Permanentes (PMASR). Em primeiro lugar, são realizados ensaios para avaliar o comportamento da máquina SynRM sem magnetos permanentes. Posteriormente, a análise do PMASR é feita em duas etapas: primeiro, com a adição de magnetos permanentes de Ferrite, e posteriormente com adição de magnetos de Neodímio-Ferro-Boro (NdFeB). O objetivo é melhorar a densidade de potência da SynRM, adequando-a para sistemas de tração elétrica. O trabalho desenvolvido inclui a análise dos modelos analíticos das SynRM e PMASR, com validação através de simulações numéricas utilizando o método de elementos finitos (FEM). Esta ferramenta permite observar e estudar detalhadamente o comportamento magnético da máquina recorrendo à análise das linhas de campo magnético, do fluxo magnético, e do valor das indutâncias segundo o eixo d (𝐿𝑑) e segundo o eixo q (𝐿𝑞). Através dos resultados obtidos neste trabalho pretende-se oferecer uma compreensão abrangente sobre o impacto dos diferentes materiais magnéticos no desempenho da PMASR, contribuindo assim para o desenvolvimento de máquinas elétricas com mais densidade de potência e otimizadas para aplicações em sistemas de tração elétrica, em particular, para aplicações em veículos elétricos.
Abstract The main objective of this dissertation is to implement, analyse and study 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-Ferro-Boron (NdFeB) magnets. The purpose is to improve SynRM's power density, making it suitable for electric traction systems. The work developed includes the analysis of the analytical models of the SynRM and PMASR, with validation through numerical simulations using the finite element method (FEM). This tool 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 d-axis (𝐿𝑑) and the q-axis (𝐿𝑞). 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 power density and optimised electric machines for applications in electric traction systems, in particular for applications in electric vehicles.
Abstract The main objective of this dissertation is to implement, analyse and study 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-Ferro-Boron (NdFeB) magnets. The purpose is to improve SynRM's power density, making it suitable for electric traction systems. The work developed includes the analysis of the analytical models of the SynRM and PMASR, with validation through numerical simulations using the finite element method (FEM). This tool 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 d-axis (𝐿𝑑) and the q-axis (𝐿𝑞). 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 power density and optimised electric machines for applications in electric traction systems, in particular for applications in electric vehicles.
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Palavras-chave
Motor síncrono de relutância (SynRM) Motor síncrono de relutância assistido por magnetos permanentes (PMASR) Análise de elementos finitos (FEM) Magnetos permanentes de ferrite e de neodímio-ferro-boro (NdFeB) Synchronous reluctance motor (SynRM) Permanent magnet assisted synchronous reluctance motor (PMASR) Finite element modelling (FEM) Ferrite and neodymium-ferro-boron permanent magnets (NdFeB)