Analysis and Tests of the Sensorless Rotor Position Detection of Ringed-Pole Permanent-Magnet Motor

Author

Alberti, Luigi ; Bianchi, Nicola ; Morandin, Mattia ; Bolognani, Saverio

Author_Institution

Fac. of Sci. & Technol., Free Univ. of Bozen, Bozen-Bolzano, Italy

Volume

50

Issue

5

fYear

2014

fDate

Sept.-Oct. 2014

Firstpage

3278

Lastpage

3284

Abstract

To the aim of creating a high-frequency (HF) anisotropy in a surface-mounted PM machine conductive rings are placed around each pole such rings modify the d-axis HF impedance of the machine. A novel strategy is adopted to evaluate the HF signal injection response of such a ringed-pole electrical machine. The self-sensing capability of the machine is evaluated by means of a small-signal model of the machine in the d-q reference frame and finite-element simulations. The impact of the rings on the HF signals achieved in the analysis is validated by the comparison with experimental results.

Keywords

AC motor drives; finite element analysis; permanent magnet motors; HF anisotropy; HF signal injection response; d-axis HF impedance; d-q reference frame; finite-element simulations; high-frequency anisotropy; ringed-pole electrical machine; ringed-pole permanent-magnet motor; self-sensing capability; sensorless rotor position detection; surface-mounted PM machine conductive rings; Computational modeling; Copper; Couplings; Eddy currents; Geometry; Iron; Rotors; AC motor drives; finite-element (FE) simulations; high-frequency (HF) saliency; permanent-magnet (PM) machines; sensorless drives;

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/TIA.2014.2308401

Filename

6748973