Coded Auxiliary Tooth Vernier PM Motor for Higher Torque Density

The patent combines the functions of stator teeth and auxiliary teeth into a single integrated structure. The auxiliary teeth are formed as an extension of the main stator teeth, creating a unified component that generates multiple magnetic fields simultaneously. This merging allows the motor to achieve higher torque output without adding separate magnet arrays or increasing the number of permanent magnets, thus resolving the contradiction between power output and device complexity

The patent introduces auxiliary teeth that extend from the main stator teeth into the air gap, creating an additional dimensional layer of magnetic field interaction. This dimensional extension allows the stator to generate both fundamental and harmonic magnetic fields without requiring additional permanent magnets on the rotor, thereby increasing torque output while maintaining the same magnet count and avoiding increased device complexity

The patent replaces the need for complex cooling systems and high-performance materials with a mechanical field-based solution. By designing auxiliary teeth with specific coding patterns, the motor generates harmonic magnetic fields that enhance torque density without requiring advanced thermal management systems or exotic materials. The solution substitutes mechanical/structural design for thermal and material science approaches

The patent changes the geometric parameters of the stator teeth by introducing auxiliary teeth with specific dimensions, positions, and coding patterns. These parameter changes modify the magnetic field distribution and harmonics, enabling higher torque density through field optimization rather than relying on high-performance materials or complex cooling systems