Asymmetrical Delta IPM Rotor Layout for Torque Peak Alignment

The patent applies asymmetry by arranging three permanent magnets in an asymmetrical delta shape configuration where the magnets have different orientations and positions relative to each other. Specifically, the magnets are arranged such that their magnetic torque axis is shifted to align with the reluctance torque axis, creating an asymmetrical pattern that optimizes torque production. This asymmetrical arrangement allows the peak magnetic torque to coincide with the peak reluctance torque, thereby maximizing the total output torque while maintaining a relatively simple three-magnet structure.

The patent applies local quality by giving each magnet in the asymmetrical delta configuration distinct local characteristics - different orientations, positions, and potentially different sizes. Each magnet is specifically positioned and oriented to contribute to the overall torque alignment objective. The magnets have different angular positions relative to the rotor axis, creating localized variations in magnetic field distribution that collectively achieve the alignment of magnetic and reluctance torque peaks.

The patent resolves this contradiction by implementing an asymmetrical delta configuration that, while slightly more complex than symmetrical arrangements, maintains practical manufacturability through a simple three-magnet design. The asymmetry is achieved through straightforward angular positioning and size variations that can be implemented using conventional manufacturing techniques, while delivering significant efficiency improvements through optimized torque alignment.