Additively Manufactured Fractional Slot Concentrated Windings with Integrated Heat Pipes: Single-Layer vs. Double-Layer

Electric motors are effective solutions to mitigate or eliminate CO
2
emissions produced by aerospace vehicles. However, the aggressive Specific Power (SP) and efficiency targets pose some design challenges since these targets exceed the state-of-the art of electric machines. In this paper, double-layer Fractional Slot Concentrated Windings (FSCWs) with Additively Manufactured (AM) coils will be presented and compared against an optimized single-layer design. The objective is to show the AM opportunities and challenges when they are applied in FSCWs. Several performance aspects will be highlighted and discussed.