Analytical Magnetic Field Distribution of Slotless Brushless Machines With Inset Permanent Magnets

Author

Rahideh, Akbar ; Korakianitis, Theodosios

Author_Institution

Dept. of Eng., Queen Mary Univ. of London, London, UK

Volume

47

Issue

6

fYear

2011

fDate

6/1/2011 12:00:00 AM

Firstpage

1763

Lastpage

1774

Abstract

An analytical open-circuit magnetic field distribution for slotless brushless machines with inset permanent magnets is presented. Three different magnetization patterns (radial, parallel, and Halbach) have been considered and their results compared with each other. The induced back-electromotive force (EMF) is also presented for each magnetization pattern. The effects of iron inter-pole on the magnetic flux density and back-EMF have been studied. To verify the model, the results have been compared with those obtained from finite element analyses (FEA).

Keywords

brushless machines; finite element analysis; magnetic fields; magnetic flux; permanent magnet machines; rotors; analytical magnetic field distribution; finite element analyses; induced back-electromotive force; inset permanent magnets; magnetic flux density; open-circuit magnetic field distribution; slotless brushless machines; Brushless motors; Magnetic fields; Magnetic flux; Magnetic multilayers; Magnetization; Permanent magnet motors; Rotors; Brushless DC; Halbach; external rotor; inset magnet; internal rotor; magnetic scalar potential; magnetization; modelling; permanent magnet; synchronous motor;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2011.2110658

Filename

5706366