Theory and design of fractional-slot multilayer windings

Author

Alberti, Luigi ; Bianchi, Nicola

Author_Institution

Dept. of Electr. Eng., Univ. of Padova, Padova, Italy

fYear

2011

fDate

17-22 Sept. 2011

Firstpage

3112

Lastpage

3119

Abstract

This paper deals with fractional-slot multilayer windings. They are becoming attractive since they allow to reduce the harmonic content of the windings magneto motive force. Some examples of such a type of windings are reported in literature, but they are limited to a few slot/pole combinations. On the contrary, in this paper the general theory is presented. General rules for the design of multilayer windings are illustrated. It is also investigated when the adoption of a multilayer winding makes possible to limit the torque ripple and the rotor losses of the machine. Several examples and experimental tests are reported to investigate the advantages and convenience of adopting multilayer windings.

Keywords

machine windings; power conversion harmonics; rotors; torque motors; fractional-slot multilayer windings; harmonic content; machine windings; rotor losses; slot/pole combinations; torque ripple; windings magnetomotive force; Coils; Harmonic analysis; Layout; Nonhomogeneous media; Rotors; Torque; Windings; AC Machines; Electrical drive; Fractional slot windings; Multilayer windings;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy Conversion Congress and Exposition (ECCE), 2011 IEEE

Conference_Location

Phoenix, AZ

Print_ISBN

978-1-4577-0542-7

Type

conf

DOI

10.1109/ECCE.2011.6064188

Filename

6064188