Comparison of two cylindrical Bar Windings for Low Voltage Permanent Magnet Synchronous Motor. Application for Electric Boat

This paper presents a comparison between two low voltage permanent magnet synchronous motors dedicated to an electric boat. One motor has a distributed winding and the other one an original concentrated winding developed in our laboratory. The originality of these two windings consists in the use of cylindrical solid bars. The AC additional losses due to the solid bars are considered. To compare the two windings, two prototypes were designed and manufactured. The both types of windings are presented and characterized with a developed test bench.