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M. A. H. Rasid,Vincent Lanfranchi,Alejandro Ospina,Khadija El Kadri Benkara 대한전기학회 2020 Journal of Electrical Engineering & Technology Vol.15 No.5
Synchronous reluctance machine (SynRM) is reemerging as a thermally robust and inexpensive actuator solution mainly due to the lack of permanent magnet. Added to that, the possibilities of having diff erent rotor topologies make it very versatile where further optimization is possible depending on the objective, be it cost, ease of fabrication, power output, or torque quality. In an application where the outer dimension of the motor is strictly limited, this paper compares quantitatively and qualitatively the torque ripple of three SynRM machines of the same stator dimension equipped with diff erent rotor topologies: segmented, tooth and fl ux barrier. Using an experimentally validated FE model, the torque ripple and the ripple’s harmonic content are compared at maximum load (stator current, I S = 50 A) and load angle ( β = π/ 4). The machine adopting the fl ux-barrier rotor was shown to have the best torque quality (41% ripple), followed by tooth rotor (78% ripple) and fi nally segmented rotor (105% ripple). The harmonic contents are also presented and analyzed