Rotor resonances of high-speed permanent magnet brushless machines

Author

Ede, J.D. ; Zhu, Z.Q. ; Howe, D.

Author_Institution

Dept. of Electron. & Electr. Eng., Sheffield Univ., UK

fYear

2001

fDate

2001

Firstpage

967

Lastpage

972

Abstract

For high-speed machines, in particular, it is very important to accurately predict natural frequencies of the rotor at the design stage so as to minimise the likelihood of failure. Finite element analysis and experimental measurements are used to establish the natural frequencies and modes of the rotor of a high-speed permanent magnet brushless motor, and to assess the influence of leading design parameters, such as the active length, the shaft diameter and extension, the bearings, and the material properties

Keywords

brushless machines; finite element analysis; machine bearings; machine testing; machine theory; permanent magnet machines; resonance; rotors; active length; bearings; design parameters; failure likelihood; finite element analysis; high-speed machines; high-speed permanent magnet brushless machines; material properties; natural frequencies prediction; rotor resonances; shaft diameter; shaft extension; Brushless machines; Brushless motors; Finite element methods; Frequency measurement; Lead; Length measurement; Magnetic analysis; Permanent magnets; Resonance; Rotors;

fLanguage

English

Publisher

ieee

Conference_Titel

Electric Machines and Drives Conference, 2001. IEMDC 2001. IEEE International

Conference_Location

Cambridge, MA

Print_ISBN

0-7803-7091-0

Type

conf

DOI

10.1109/IEMDC.2001.939439

Filename

939439