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For automotive applications, accurate torque production and high efficiency of the traction motor are very important. However, the performance of widely used interior permanent magnet (IPM) machines is influenced by temperature variation, and the temperature variation in automotive applications can be profound. In this paper, the state-of-the-art torque compensation control algorithms of IPM machines...
This research attempts to compare the effects of the slot opening on axial flux permanent magnet machines with the fractional slot concentrated winding and the integer slot toroid winding. Analytical derivations of winding function, flux linkage, and back-EMF are presented, paying special attention to the slot opening. Specific machines having 24 slots 28 poles, 24 slots 20 poles, and 84 slots 28...
This paper presents a closed-form design optimization of surface permanent magnet (SPM) machines using concentrated windings layout. Over the last few years, the interest in the use of SPM machines with a high pole number for low speed direct-drive applications has significantly increased. In this paper, the analytical design model is developed and particle swarm optimization (PSO) is applied for...
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