Wound Field Rotor Winding Layout for Higher Space Factor

The patent applies local quality by making the straight portion dimensions variable rather than uniform. Specifically, the straight portions on the inner side in the radial direction have smaller dimensions in the circumferential direction compared to those on the outer side. This local differentiation optimizes space utilization in different radial zones, reducing dead space and increasing the space factor while maintaining manufacturability.

The patent employs asymmetry by creating non-uniform straight portion dimensions across the radial direction. The inner straight portions are designed with smaller circumferential dimensions than outer straight portions, breaking the symmetry of traditional uniform windings. This asymmetric design effectively reduces interference between adjacent main pole portions and maximizes the use of available space, thereby increasing the space factor.

The patent uses local quality to increase the number of turns specifically on the inner side in the radial direction where space is more constrained. By making straight portions on the inner side smaller in the circumferential direction, the design allows for more turns to be packed in this region without causing excessive interference with adjacent main pole portions, thus enhancing excitability while controlling dead space.

The patent addresses the turn density issue by introducing dimensional variation in the radial direction. Instead of uniformly increasing turns throughout, the design varies the straight portion dimensions across the radial dimension, allowing optimized turn distribution. This dimensional approach enables increased excitability through more turns while managing interference by strategically placing turns in radial zones with appropriate spacing.