Impact of Pole and Slot Combination on Vibrations and Noise of Electromagnetic Origins in Permanent Magnet Synchronous Motors

Author

Verez, Guillaume ; Barakat, Georges ; Amara, Yacine ; Hoblos, Ghaleb

Author_Institution

GREAH, Univ. du Havre, Le Havre, France

Volume

51

Issue

3

fYear

2015

fDate

Mar-15

Firstpage

1

Lastpage

4

Abstract

In low- to medium-power-rated brushless machines, noise of electromagnetic origin is generally prevailing over mechanical and aerodynamic sources. The appropriate combination of pole and slot of a permanent magnet synchronous motor is one of the keys to its performances among which stands noise reduction. This paper investigates configurations regarding this aspect for distributed overlapping and single-layer concentrated nonoverlapping winding configurations. Chosen combinations are 8 poles 48 slots (8p48s), 8p72s, 46p48s and 50p48s. The air-gap flux density is obtained by 2-D finite element analysis (FEA), allowing to compute the electromagnetic pressure. It then serves as input of mechanical and acoustical 3-D FEA models of the stator with carter.

Keywords

aerodynamics; air gaps; brushless machines; finite element analysis; permanent magnet motors; stators; synchronous motors; vibrations; 2D finite element analysis; acoustical 3D FEA model; aerodynamic source; air-gap flux density; distributed overlapping winding configuration; electromagnetic origin noise; electromagnetic origin vibrations; electromagnetic pressure computation; low-power-rated brushless machines; mechanical 3D FEA model; mechanical source; medium-power-rated brushless machines; permanent magnet synchronous motors; pole combination impact; single-layer concentrated nonoverlapping winding configuration; slot combination impact; Harmonic analysis; Noise; Stator windings; Vibrations; Windings; Acoustic noise; electromagnetic forces; finite element analysis (FEA); permanent magnet machines; vibrations;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2014.2354019

Filename

7093583