Title :
Analytical prediction of eddy current losses in retaining sleeves for surface mounted PM synchronous machines
Author :
Lazzari, M. ; Miotto, A. ; Tenconi, A. ; Vaschetto, S.
Author_Institution :
Dipt. di Ing. Elettr., Politec. di Torino, Torino, Italy
Abstract :
The aim of this paper is to investigate and evaluate the eddy current losses in conductive retaining sleeves of Permanent Magnet Synchronous Motors (PMSMs). High speed synchronous machines with surface-mounted PMs often require a bandage to fix the magnets to the rotor surface. A stainless steel sleeve is potentially a viable solution: the eddy current losses in this region are investigated using an analytical approach. The power losses due to the eddy-currents induced in the sleeve are evaluated in several different no-load and loaded working conditions. Finite-Element Method (FEM) simulations with two-dimensional and three-dimensional models validate the analytical results.
Keywords :
eddy current losses; finite element analysis; permanent magnet motors; stainless steel; synchronous motors; conductive retaining sleeves; eddy current losses; finite element method; high speed synchronous machines; permanent magnet synchronous motors; rotor surface; stainless steel sleeve; surface mounted PM synchronous machines; Eddy currents; Finite element methods; Harmonic analysis; Permeability; Rotors; Stators; Steel; Permanent magnet brushless motor; air-gap flux density harmonics; eddy current losses; retaining sleeve;
Conference_Titel :
Electrical Machines (ICEM), 2010 XIX International Conference on
Conference_Location :
Rome
Print_ISBN :
978-1-4244-4174-7
Electronic_ISBN :
978-1-4244-4175-4
DOI :
10.1109/ICELMACH.2010.5607867
