Performance Comparison Between Switching-Flux and IPM Machines With Rare-Earth and Ferrite PMs

Author

Fasolo, Alessandro ; Alberti, Luigi ; Bianchi, Nicola

Author_Institution

Dept. of Ind. Eng., Univ. of Padova, Padua, Italy

Volume

50

Issue

6

fYear

2014

fDate

Nov.-Dec. 2014

Firstpage

3708

Lastpage

3716

Abstract

Switching-flux permanent magnet (PM) machines compared with interior PM machines are presented to be interesting-solutions in terms of torque per volume density, compactness, active material layout, and cooling capability. The flux linkage is bidirectional, and the voltage is almost sinusoidal. These machines are then interesting for ac drives and field-weakening operation. Despite the lack of torque density, the adoption of low-cost magnets is investigated. Demagnetization in PMs is a critical issue and influences the choice of the machine.

Keywords

AC motor drives; demagnetisation; ferrites; magnetic flux; permanent magnet machines; IPM machines; ac drives; bidirectional flux linkage; demagnetization; ferrite PM; field weakening operation; permanent magnet machines; rare-earth PM; sinusoidal voltage; switching flux machines; Demagnetization; Ferrites; Magnetic flux; Rotors; Stator windings; Torque; Demagnetization; PMmachine; ferrite permanent magnets (PMs); field weakening(FW); fractional-slot winding; interior PM (IPM) machine; rare-earth PMs; switching-fluxmachine;

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/TIA.2014.2319592

Filename

6804677