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Multipole Radial Ring Magnet (Multipole Ring)

 

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.

 

 

Radial multi-pole radially oriented rings have the following advantages over conventional segment magnets:

 

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
(4~18) (pole with<10mm)

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

 

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