Performance comparison of wound field and permanent magnet excited electric machines

Author

Ostovic, Vlado

Author_Institution

Univ. of Appl. Sci., Saabruecken, Germany

fYear

2014

fDate

13-16 May 2014

Firstpage

106

Lastpage

112

Abstract

A thorough analysis of all dimensions of permanent magnet (PM) application in electric machines is carried out in the paper. Available literature on this topic is focused on their single advantage- the ability to generate magnetic field without electric current- and neglects their numerous drawbacks. Electrically conductive magnets dissipate losses when exposed to a variable air gap permeance in an electric machine. Constant flux of permanent magnets is powerless against effects of armature reaction in a synchronous machine. The uncontrollable price of rare- earth permanent magnets is far above the cost for any other material used in an electric machine.

Keywords

air gaps; magnetic fields; permanent magnet machines; permanent magnets; synchronous machines; air gap permeance; electrically conductive magnets; magnetic field; permanent magnet excited electric machines; rare-earth permanent magnets; synchronous machine; wound field; Copper; Magnetic flux; Permanent magnets; Reactive power; Stator windings; Windings; Electromagnetic torque density; permanent magnets; wound field;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy Conference (ENERGYCON), 2014 IEEE International

Conference_Location

Cavtat

Type

conf

DOI

10.1109/ENERGYCON.2014.6850414

Filename

6850414