Title :
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
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;
Journal_Title :
Industry Applications, IEEE Transactions on
DOI :
10.1109/TIA.2013.2253436
