Potentials and limits of high speed PM motors

Author

Bianchi, N. ; Bolognani, S. ; Luise, F.

Author_Institution

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

Volume

3

fYear

2003

fDate

12-16 Oct. 2003

Firstpage

1918

Abstract

This paper illustrates the potentials and limits of high-speed permanent-magnet (PM) motors. The effect of the material choice, including PM, stator core and retaining sleeve is highlighted. Slotted and slotless configurations are taken into account and compared, computing magnetic, electrical, mechanical and thermal quantities by means of both an analytical and a finite element approach. In particular, the thermal and the PM demagnetization limits and the rotor losses are evaluated. A criteria of optimisation of the motor structure is described, with the diameter ratio and the iron flux density as main design variables.

Keywords

demagnetisation; finite element analysis; losses; magnetic flux; permanent magnet motors; rotors; stators; PM demagnetization limits; electrical quantities; finite element approach; high speed PM motors; iron flux density; magnetic quantities; main design variables; material choice; mechanical quantities; motor structure optimisation; retaining sleeve; rotor losses; slotless configuration; slotted configuration; stator core; thermal quantities; Demagnetization; Design optimization; Finite element methods; Iron; Magnetic analysis; Magnetic flux; Magnetic materials; Permanent magnet motors; Rotors; Stator cores;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 2003. 38th IAS Annual Meeting. Conference Record of the

Print_ISBN

0-7803-7883-0

Type

conf

DOI

10.1109/IAS.2003.1257830

Filename

1257830