Abstract
Issues of permanent magnet synchronous motor with a fractional slot winding design are discussed in this paper. Fractional slot concentrated windings are windings with less than one slot per pole and phase. This type of winding has the following features. A machine with such a winding has manufacturing advantages, since there are no conductors overlapping at the winding ends; consequently, the manufacturing process is simpler and there is a higher level of reliability. This kind of winding also allows one to create multipole machines of relatively small dimensions. In turn, this makes it possible to increase the stator inner diameter and torque density by reducing the stator yoke. Features of the construction solutions are considered. Means of development and solutions used, as well as methods of calculation and simulation, are described. Experimental results are given. The developed motor is compared with similar induction motors, and the advantages of the synchronous machine are presented.
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