This paper proposes a control strategy of finite control set model predictive torque control (FCS-MPTC) with a deadbeat (DB) solution for PMSM drives. By using a deadbeat solution, the process of selections of best switching vector is optimized. The predicted deadbeat voltage sector consisting of the desired voltage vector avoids the complete enumeration for testing all feasible voltage vectors, which relieves the big calculation effort of the traditional FCS-MPTC method. The proposed system is carried out experimentally both in steady state and in transient state. Index Terms-Torque control, optimization, model predictive control (MPC), deadbeat (DB), permanent magnet machines.

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Abstract-The fractional slots tooth concentrated windings are characterized with high space MMF harmonics which results to undesirable effects on electric machine, such as localised core saturation, eddy current loss in the rotor and noise and vibration. A new and high efficiency method is presented in this paper to reduce simultaneously the sub-and high MMF harmonics of these winding types. The method is based on doubling the number of stator slots, using two identical winding systems connected in series and shifted to each other for a specific angle, using stator core with different tooth width and using different turns per coil for the neighbouring phase coils. With the proposed technique the unwanted sub-and high winding MMF harmonics can be reduced or completely canceled.

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