Title :
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
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;
Journal_Title :
Industry Applications, IEEE Transactions on
DOI :
10.1109/TIA.2014.2308401
