Potentials and limits of high-speed PM motors

Author

Bianchi, Nicola ; Bolognani, Silverio ; Luise, Fabio

Author_Institution

Dept. of Electr. Eng., Univ. of Padova, Italy

Volume

40

Issue

6

fYear

2004

Firstpage

1570

Lastpage

1578

Abstract

This paper illustrates potentials and limits of high-speed permanent-magnet (PM) motors. The influence of materials chosen for PM, stator core, and retaining sleeve is highlighted. Slotted and slotless topologies are considered and compared, computing magnetic, electrical, mechanical, and thermal quantities by means of both analytical and finite-element approach. Thermal and PM demagnetization limits as well as rotor losses are evaluated. A criteria of optimization of the motor structure is described, with the diameter ratio and the iron flux density as main design variables.

Keywords

cores; demagnetisation; finite element analysis; optimisation; permanent magnet motors; stators; electrical quantity; finite element method; high-speed drive; high-speed permanent magnet motor; iron flux density; magnetic quantity; mechanical quantity; optimization; permanent magnet demagnetization; retaining sleeve; rotor loss; slotless topology; slotted topology; stator core; thermal demagnetization; thermal quantity; Demagnetization; Design optimization; Finite element methods; Magnetic analysis; Magnetic flux; Magnetic materials; Permanent magnet motors; Rotors; Stator cores; Topology; 211;magnet; 65; FE; Finite-element; PM; analysis; high-speed motor; motor; motor analysis and design; motor optimization; permanent&#;

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/TIA.2004.836173

Filename

1360004