Alternating pole vernier permanent magnet motor based on harmonic modified rotor and barrier magnetized stator
By designing a harmonic-modified rotor and a stator with magnetic barriers, the magnetic permeability distribution is optimized, non-working harmonics are suppressed, and inter-pole leakage flux is reduced. This solves the problems of high cost and low torque density in alternating pole vernier permanent magnet motors, achieving efficient torque enhancement and cost reduction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- QINGDAO UNIV
- Filing Date
- 2026-06-17
- Publication Date
- 2026-07-17
AI Technical Summary
While existing alternating pole vernier permanent magnet motors improve torque density, they suffer from problems such as high permanent magnet usage and high cost. Furthermore, the simple application of Halbach permanent magnet arrays fails to effectively utilize non-working harmonics in the air gap, resulting in low torque density.
The design employs a harmonic-shaped rotor and a stator with magnetic barriers. The rotor core poles adopt a harmonic-shaped orientation design, and the stator teeth are inter-tooth embedded with magnetic barriers. By optimizing the magnetic permeability distribution and blocking non-working harmonic paths, combined with ordinary radial magnetization, the complex Halbach array is avoided.
While maintaining high torque density, the cost of the motor has been reduced, torque quality and power factor have been improved, and full utilization of permanent magnets and effective suppression of non-operating harmonics have been achieved.
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Figure CN122419031A_ABST
Abstract
Citation Information
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