Staggered Flat-Wire Wave Winding for Single Three-Phase Control

The patent applies asymmetry by setting different pitches for different wires within the same phase. Specifically, the first wire has pitch y1 and the second wire has pitch y2 where y1 ≠ y2. This asymmetric pitch configuration allows currents from different slots to be synchronized, enabling single three-phase control and simplifying the motor circuit while maintaining manufacturing simplicity.

The patent achieves universality by creating a winding configuration that works for motors with different slot distributions per pole per phase. The asymmetric pitch design (y1=q×m+(q−1) and y2=q×m−1) allows the same winding structure to synchronize currents regardless of the specific q value, enabling single three-phase control for motors with 2, 3, 4, or more slots per pole per phase without requiring additional controllers.

The patent applies local quality by giving different pitch values to different wires within the same phase based on their specific positions and functions. The first wire uses pitch y1=q×m+(q−1) while the second wire uses pitch y2=q×m−1. This localized differentiation in pitch values ensures that currents from different slots are synchronized when they reach the common busbar, achieving reliable current synchronization while maintaining an efficient winding process.