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

fYear

2010

fDate

6-8 Sept. 2010

Firstpage

1

Lastpage

6

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ICELMACH.2010.5607867

Filename

5607867