Influences of rotor eccentricity on permanent magnet synchronous motor characteristics

Author

Takahata, R. ; Wakui, S. ; Miyata, K. ; Noma, K. ; Senoo, M.

Author_Institution

Hitachi Res. Lab., Hitachi Ltd., Hitachi, Japan

fYear

2009

fDate

15-18 Nov. 2009

Firstpage

1

Lastpage

6

Abstract

This paper describes the influence of rotor eccentricity on permanent magnet synchronous motor characteristics. Specifically, we studied the influence of rotor eccentricity on permanent magnet synchronous motor characteristics by conducting a magnetic field analysis and several experiments. The rotor eccentricity unbalances the magnetic force and thus increases the mechanical loss. Furthermore, a circulating current generated in two three-phase windings connected in parallel results in an increase in electric power loss in the permanent magnet synchronous motor.

Keywords

permanent magnet motors; synchronous motors; magnetic field analysis; permanent magnet synchronous motor characteristics; rotor eccentricity; three-phase windings; Coils; Degradation; Magnetic analysis; Magnetic field measurement; Magnetic forces; Permanent magnet motors; Production; Rotors; Stator windings; Synchronous motors; circulating current; motor efficiency; permanent magnet synchronous motor; rotor eccentricity; unbalanced magnetic force;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems, 2009. ICEMS 2009. International Conference on

Conference_Location

Tokyo

Print_ISBN

978-1-4244-5177-7

Electronic_ISBN

978-4-88686-067-5

Type

conf

DOI

10.1109/ICEMS.2009.5382869

Filename

5382869