Radial multi-pole ring magnet have high surface magnetic flux density (with ultra-high surface magnetic field), which is significantly better than the performance of traditional segment magnets. The magnetic circuit design is different from that of radiation rings.
The magnetic field distribution on the surface of the radial oriented ring is Rectangular waveform, and the magnetic field distribution on the surface of the radial multipole ring magnet is sinusoidal waveform, which is more conducive to the design of the motor.
1. Improve the consistency of the distribution of surface gauss.
2. Reduce the deviation of the geometric centre and the centre of gravity, and increase the surface gauss by 30%.
3. Improve the temperature resistance of magnet.
4. The surface magnetic field distribution is sinusoidal, which is more conducive to the design of low vibration, low noise and low high frequency submerged wave motors.
Comparision of radially oriented ring magnet and multi-pole ring magnet
|
||
Item |
Radial oriented ring magnet |
Multi-pole ring magnet |
Surface magnetic flux waveform |
Rectangular wave |
Sinusoidal wave |
Number of poles |
Variable by magnetization |
Designed specific |
Magnetized position |
Variable by magnetization |
Fixed |
Skew magnetization |
Yes |
No |
Recommended outside diameter(mm) |
D16-D70 |
D8-D50 |
Recommended inside diameter(mm) |
1-50 |
1-50 |
Recommended inside-to-outside diameter ratio |
0.7-0.95 |
0-0.8 |
Grade |
Limited |
No limit |