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This paper illustrates a general design process used for implementing non-overlapping concentrated windings in an interior permanent magnet (IPM) machine for field weakening applications. This design process was verified by finite element analysis (FEA) of a 18-slot, 14-pole model. The optimization process of torque and field weakening performance resulted in a design with thin inter-pole link sections...
In part I of this analysis, an overview of concentrated windings and open-circuit characteristics of its implementation on the IPM machine was covered. In this paper, analysis is performed on the same three winding configurations used in part I, but with the effects of armature excitation. MMF waveforms and harmonics, self-and mutual-inductance waveforms, saliency ratio, torque and power versus speed...
The application of concentrated windings in permanent magnet machines significantly reduces overall machine length, due to the elimination of end winding overlap making it more suitable for areas with space limitations. Efficiency is also increased due to the reduction of copper loss. In order to take full advantage of these benefits, optimization strategies have been implemented and its effects are...
This paper investigates the reduced cogging torque seen in a prototype Segmented Interior Permanent Magnet (SIPM) machine. The Interior Permanent Magnet (IPM) machine in which the rotor pole magnets are segmented to provide an improved flux-weakening capability are called in this paper as the Segmented IPM (SIPM) machine. It has been seen that the cogging torque of the segmented IPM machine is much...
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