转子冲片、电机及空调器
By designing inter-pole magnetic barrier slots and outer reinforcing ribs on the rotor laminations, the problems of low torque and large torque pulsation in rare-earth permanent magnet synchronous motors have been solved, resulting in improved motor performance and cost savings.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GREE ELECTRIC APPLIANCE INC OF ZHUHAI
- Filing Date
- 2025-06-30
- Publication Date
- 2026-07-17
AI Technical Summary
The rotor lamination structure design of existing rare-earth permanent magnet synchronous motors results in low motor torque and high torque pulsation, making it difficult to balance cost and performance.
A rotor lamination is designed to form an inter-pole magnetic barrier groove by connecting air magnetic barrier grooves at both ends of a V-shaped magnet groove, and to set a second reinforcing rib between the inter-pole magnetic barrier groove and the outer circle to enhance structural strength, reduce inter-pole magnetic leakage, increase permanent magnet torque and reduce torque pulsation.
It effectively improves the permanent magnet torque of the motor, reduces torque ripple, enhances the structural strength of the motor, and reduces the amount of rare earth permanent magnets used while meeting the same performance requirements, thus lowering costs.
Smart Images
Figure CN224520789U_ABST