Topology and Parametric Two-Stage Optimization Design Process of Rotor Notches to Minimize Cogging Torque

Key Points

• This study aims to minimize cogging torque in permanent magnet synchronous motors while preserving torque performance.
• Implemented a two-stage optimization process for rotor notches: topology optimization followed by parametric optimization.
• Effectiveness compared with baseline and existing parametric optimization methods.
• Ensured compliance with rated torque performance and mechanical strength constraints.
• Achieved significant reduction in cogging torque compared to traditional methods with maintained torque performance.
• Validated the approach through comparison with baseline models, showing optimized notch shapes deliver superior results.