19. What are the advantages of radial orientation ring magnets
Radial Ring Magnet normally used in high speed motors. The traditional magnetic rotor is wrapped by several independent curved magnets. They are working well in low speed. But as the speed goes up, the unbalanced weight of each magnet will cause the vibration of the rotor rotation.
In the Situation, we need a magnet ring, instead of individual magnets, which has also several poles, N-S-N-S... in the cycle
We provide series of sintered Nd-magnet of radial orientation ring with excellent magnetic performance. The following picture shows the finite element analysis result on 16-poles magnetized radial orientation ring.
The magnetization of the radial orientated ring has no tangential component, so that the radial orientated ring magnet can provide stronger flux intensity compared to the ring built by using a number of segment magnets. Additionally, the stray field can be minimized thanks to its zero tangential component of magnetization, many advantages for motor application can be realized especially on parameters output, thermal, noise, vibration et al. Furthermore, the radial orientated ring magnet can successfully resolve the headache problem that the magnet moment fluctuation from piece to piece when using the segment magnets in the motor. This will directly decrease the manufacturing cost of the motor owe to the higher productivity of magnets construction, higher profile accuracy, zero pole assembly defects and lower management links when in mass production in motor industry.
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