Sensorless Capability of Fractional-Slot Surface-Mounted PM Motors

Author

Faggion, Adriano ; Fornasiero, Emanuele ; Bianchi, Nicola ; Bolognani, Saverio

Author_Institution

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

Volume

49

Issue

3

fYear

2013

fDate

May-June 2013

Firstpage

1325

Lastpage

1332

Abstract

This paper investigates the capability of sensorless rotor position detection by means of injection of a high-frequency (HF) signal of fractional-slot surface-mounted permanent-magnet (PM) motors. In order to create an HF anisotropy, such motors are characterized by the presence of a ring around each pole. For the sake of completeness, different windings are considered: a distributed coil winding and a concentrated coil winding. The effect of eddy currents in the magnets, due to the HF signal, is also considered. The effect of the slot opening is also taken into consideration. Finally, the comparison with two different PM rotor topologies is addressed: an interior PM motor and an INSET motor.

Keywords

machine windings; permanent magnet motors; rotors; sensorless machine control; HF anisotropy; HF signal; INSET motor; PM rotor topology; concentrated coil winding; distributed coil winding; eddy current effect; fractional-slot surface-mounted PM motor sensorless capability; fractional-slot surface-mounted permanent-magnet motors; high-frequency signal; sensorless rotor position detection capability; Coils; Couplings; Inductance; Permanent magnet motors; Rotors; Stator windings; Windings; Motor drives; permanent-magnet machines; sensorless control;

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/TIA.2013.2253436

Filename

6482614