Permanent Magnet Synchronous Machines and Rare-Earth Magnet Materials
This community focuses on the design, control, and material science of electric machines driven by permanent magnets, with a specific emphasis on synchronous motors and generators used in high-efficiency applications.
The research centers on the development of high-performance rare-earth magnets, particularly neodymium-iron-boron (Nd-Fe-B), and their integration into synchronous motor and generator architectures. Key technical threads include the optimization of rotor designs, such as interior permanent magnet and axial flux configurations, to maximize torque density and efficiency. Significant attention is paid to control strategies, including model predictive control and sensorless control algorithms, to improve dynamic response and reliability. The materials science component investigates grain boundary diffusion and sintering processes to enhance magnetic coercivity and corrosion resistance, while the engineering component addresses finite element modeling, design optimization, and fault-tolerant operation for applications in electric vehicles and industrial drives.
The community is most heavily represented in research tracked for neodymium, accounting for 6.1% of all neodymium-related papers, and samarium, where it constitutes 6.0% of the relevant literature. It also contributes significantly to iron research, representing 1.3% of that element's tracked papers.
There are 31,737 papers in this community, with the highest publication volumes in IEEE Transactions on Magnetics, Journal of Magnetism and Magnetic Materials, and Journal of Applied Physics.
Recent work continues to focus on advanced magnet coatings for corrosion resistance, high-coercivity sintered Nd-Fe-B formulations, and the application of these machines in specialized contexts such as wireless power transfer for unmanned aerial vehicles and magnetic microrobot systems for biomedical navigation.