Cylindrical Halbach Array Magnet Features:
Part No.: HSHARR-01
Overall Dimensions: 2.520″ (64mm) OD x 1.575″ (40mm) ID x 0.500″ (12.70mm) thick
Magnet Specs: Nickel plated N48H
Max Working Temp: 120°°C
Brass Sleeve Spec: 2.520″ (64mm) OD x 2.441″ (62mm) ID x 0.079″ (2mm) thick, no plating.
Center Point Gauss Reading: approximately 1800 – 1850 G
Gauss Reading at Pole: approximately 5500 – 5700 G
Halbach Arrays provide a stronger, uniform and more directed magnetic field than typical magnetic assemblies. The three (3) main Halbach Arrays are:
In a Cylindrical Halbach Array the magnetic field is contained entirely within the inside diameter of the cylinder with little to no magnetic field on the outside diameter. The strength of the magnetic field is mainly determined by the size of the inside diameter.
In a Linear Halbach Array the magnetic field is eliminated on one side of straight array of magnets. This array uses block magnets that are oriented in varying direction and assembled in a straight line to produce a strong magnetic field on one side while a very weak field is produced on the opposite site.
In a Holding Halbach Array an extremely strong magnetic field is produced on one side of the assembly using magnet and orientation patterns. This can produce and hundreds of pounds of holding force.
Halbach arrays are good options for electric motors, medical research, particle accelerators and any application that requires a strong directed magnetic field.
With respect to the conventional motor, Halbach motors are the following advantages
1 Compared with the traditional structure of the permanent magnet motor, the mutuals uper position radial magnetic field strength on the other side so greatly enhance this would effectively reduce the volume of the motor,to enhance the power of the motor density.
2 rotor is no longer needed chute
In conventional permanent magnet motor, due to the inevitable presence of the air gap magnetic field harmonics, in general, based on the rotor chute weaken its impact. In Halbach motor, because the air gap magnetic field distribution of the higher degree sinusoidal harmonic content is small, so the rotor without a chute.
3 rotor can be non-core material
Halbach magnet because unilateral field shielding effect resulting from the distribution of the magnetic material for the rotor is no longer necessary to provide access, not only to provide a larger selection of materials selected from the rotor, and the system may have a lower moment of
inertia and less good performance should be attached quickly.
4 high efficiency permanent magnet
Due to the results of Halbach magnetized magnets, which leads to higher operating point of the permanent magnet, generally more than 0.9, to improve the utilization of the permanent magnet. super strong ndfeb halbach magnets
5 can use a centralized winding
Permanent magnet motors are often used in traditional distributed windings to weaken the influence of harmonic MMFs. In Halbach motor because of its high degree of sinusoidal magnetic field distribution of the harmonic magnetic field has little effect, it can be centralized winding.
Motor using Halbach magnet arrangement can reduce the torque ripple of the motor, thus greatly reducing the requirement for the motor bearings.
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