Permanent Magnet Motor Topology Using Harmonic-Oriented Modulation Teeth

The patent segments the working magnetic field into multiple harmonic components (fundamental wave and multiple high-order harmonics). Each harmonic component is independently controlled through specific winding configurations and permanent magnet arrangements, allowing torque generation from multiple sources simultaneously. This segmentation enables the motor to overcome material property limitations by utilizing harmonic fields that can be optimized independently of base material constraints.

The patent implements multi-functionality by designing the motor structure to simultaneously generate multiple working magnetic fields (fundamental and harmonic components) that all contribute to torque production. The stator windings are configured to produce both fundamental and harmonic MMF waves, while the permanent magnets on the rotor generate corresponding harmonic flux densities. This multi-functional approach allows a single motor structure to achieve high torque density through combined effects of multiple magnetic fields rather than relying solely on material properties.

The patent applies dynamics by making the magnetic field configuration adjustable and controllable rather than fixed. Through independent control of stator winding excitations and rotor permanent magnet arrangements, the harmonic content and distribution of the working magnetic field can be dynamically optimized. The motor can switch between different operating modes by adjusting which harmonic components are activated, providing topological flexibility that goes beyond traditional fixed-structure designs while maintaining high torque density through magnetic field modulation.

The patent utilizes parameter changes by systematically varying key design parameters including winding coefficients, pole arc coefficients, and permanent magnet configurations to optimize harmonic field generation. By changing these parameters, the motor can achieve different torque characteristics and adapt to various application requirements. The design methodology involves calculating and adjusting parameters such as the amplitude and phase of each harmonic component to maximize torque density while providing topological innovation capability.

The patent applies preliminary action by pre-calculating and pre-configuring the harmonic field parameters before motor assembly. The design methodology involves determining the optimal winding coefficients, pole arc coefficients, and permanent magnet arrangements in advance based on desired torque characteristics. This preliminary design phase establishes the harmonic field distribution and torque generation mechanisms before manufacturing, reducing the need for iterative adjustments and contingency measures during the design process while ensuring reliable motor performance.

The patent replaces traditional trial-and-error mechanical design approaches with a systematic field-based design methodology. Instead of repeatedly adjusting physical structural parameters through iterative prototyping, the design uses electromagnetic field analysis and harmonic decomposition to directly calculate optimal configurations. This substitution of mechanical iterative optimization with electromagnetic field-based systematic design reduces design process complexity and contingency while achieving reliable high-performance motor characteristics.