Print Email Facebook Twitter Rotor losses in laminated magnets and an anisotropic carbon fiber sleeve Title Rotor losses in laminated magnets and an anisotropic carbon fiber sleeve Author Van der Geest, M. Wolmarans, J.J. Polinder, H. Ferreira, J.A. Zeilstra, D. Faculty Electrical Engineering, Mathematics and Computer Science Department Electrical Sustainable Energy Date 2012-12-31 Abstract 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 fiber reinforced retaining sleeves. This paper examines by numerical studies the consequences for the losses of using these materials. The effect of laminating the magnets and the losses in the anisotropic sleeve are analysed with 3D simulations, using simplifications determined with 2D simulations. The anisotropic resistivity of the sleeve roughly doubles the losses compared to an isotropic sleeve, while laminating the magnets in n slices reduces the losses by 1/n1.8. Subject carbon fiber, magnet lamination, rotor losses, 3D FEM To reference this document use: http://resolver.tudelft.nl/uuid:6667bd3d-f47c-498c-89ae-d7816a56a210 Publisher Institution of Engineering and Technology ISBN 978-1-84919-616-1 Source 7th IET International Conference on Power Electronics, Machines and Drives PEMD, Manchester, 8-10 April, 2012 Part of collection Institutional Repository Document type conference paper Rights (c) 2012 The Authors Files PDF 285914.pdf 349.17 KB Close viewer /islandora/object/uuid:6667bd3d-f47c-498c-89ae-d7816a56a210/datastream/OBJ/view