Currently, due to the growing use of renewable energy technologies and hydrogen energy technologies, highspeed electric machines are of particular interest. High-speed electric machines have proven themselves well in compressor units and can improve the overall efficiency of the entire unit by eliminating the gearbox. However, the design and operation of these electric machines are accompanied by several difficulties, such as the resulting increased centrifugal forces, leading to increased mechanical stresses in the structure of the rotor. In this paper, a high-speed synchronous reluctance motor is considered as the object under study. The aim is to investigate the possibility of reducing mechanical stresses in the rotor steel by optimizing its topology while maintaining the output electromagnetic power.
At present, in connection with the development of processing technologies, carbon fiber has become widespread and used in electromechanical technologies. However, when modeling carbon fiber, difficulties ariseoften, the mechanical parameters of separately carbon fiber and epoxy resin are known, and only for a specific layer thickness. Also, carbon fiber is used as a composite material and, therefore, there is a need to determine the optimal sequence of sheet orientation for use in electrical machines. With the help of the COMSOL Multiphysics software package, the possibility of determining the homogenized properties of carbon fiber bonded with epoxy resin was investigated, and the issue of determining the optimal sequence of sheets from the point of view of minimizing mechanical stresses was also considered. The application of a carbon fiber sleeve for a high-speed synchronous reluctance electrical machine has been considered. The mechanical analysis results indicate this technology's applicability in the field of high-speed electromechanics.
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