一种飞轮储能用轴向永磁偏置磁悬浮轴承
By employing a combination structure of control coils and permanent magnet rings in the magnetic levitation flywheel energy storage system, zero-power passive balancing and ultra-low-power levitation control of the axial magnetic levitation bearing are achieved. This solves the problems of high power consumption and inability to offset constant axial gravity loads in existing technologies, making it suitable for direct replacement of rotating machinery.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- RES & DEV INST OF NORTHWESTERN POLYTECHNICAL UNIV IN SHENZHEN
- Filing Date
- 2026-04-23
- Publication Date
- 2026-07-17
AI Technical Summary
The axial magnetic bearings in existing magnetic levitation flywheel energy storage systems consume high power and cannot achieve zero current to offset constant axial gravity loads.
The structure includes a control coil, stator sleeve, thrust disk and stator cover plate. The control coil generates bidirectional control current to form a controllable magnetic field in positive and negative directions. The permanent magnet ring generates axial passive electromagnetic force to counteract the rotor's gravity load, and the rotor's axial suspension control is achieved through a displacement sensor.
It achieves zero-power passive balancing and ultra-low-power levitation stability control of rotor axial gravity load. It has a simple structure, low permanent magnet usage, low ferromagnetic material usage, and high load-bearing capacity, making it suitable for direct replacement of rotating machinery.
Smart Images
Figure CN122083067B_ABST