Rotor losses in the HISPEM

摘要: High speed fault tolerant permanent magnet machines have strong asynchronous airgap harmonics, making them susceptible to rotor eddy-current losses. These losses can be reduced by using novel high resistivity materials like plastic bonded magnets and carbon fibre reinforced retaining sleeves. This is an entirely new concept, little knowledge exists on this specific topic. thesis investigates the consequences of these for The not accurately specified therefore measured first eddy-currents. Then fast 2D simulations are utilised determine dependency all parameters, while lamination thickness anisotropic sleeve studied with 3D simulations. results scaled if desired. Some conclusions that eddy-currents resistance limited at times laminating reduces as expected. in shown negligible, even when perpendicular 10 m?m. Lastly, both strongly increase increasing relative permeability magnets, which turn increases temperature. Magnets a low should used.