Characteristic of Halbach Array Magnets
● Power density is big
Compared with the traditional permanent magnet motor structure, Halbach magnets design motor can effectively reduce the size of the motor to and enhance the motor power density. This is because the Halbach magnetic ring after disassemblied the parallel magnetic field and the radial magnetic field overlap with each other so that the other side of the magnetic field strength greatly improved.
Compared with the traditional permanent magnet motor structure, Halbach magnets design motor can effectively reduce the size of the motor to and enhance the motor power density. This is because the Halbach magnetic ring after disassemblied the parallel magnetic field and the radial magnetic field overlap with each other so that the other side of the magnetic field strength greatly improved.
Halbach magnet structure
● The rotor does not need a chute
In the traditional permanent magnet motor, due to the inevitable existence of air gap magnetic field harmonics,generally in the fixed rotor structure to take the chute to weaken its impact. In the Halbach motor, because the air gap magnetic field sine distribution is high, harmonic content is small, so the stator without chute.
In the traditional permanent magnet motor, due to the inevitable existence of air gap magnetic field harmonics,generally in the fixed rotor structure to take the chute to weaken its impact. In the Halbach motor, because the air gap magnetic field sine distribution is high, harmonic content is small, so the stator without chute.
● The rotor can be made of non-core material
Since the unilateral magnetic field distribution produced by the self-shielding effect of the Halbach magnet eliminates the need for the rotor to provide a path for the magnetic material, which not only provides a larger choice for the rotor material, but also allows the system to have a lower moment of inertia and good attached performance.
Since the unilateral magnetic field distribution produced by the self-shielding effect of the Halbach magnet eliminates the need for the rotor to provide a path for the magnetic material, which not only provides a larger choice for the rotor material, but also allows the system to have a lower moment of inertia and good attached performance.
● Permanent magnet utilization is high
As the Halbach magnet is divided into magnetized results, resulting in its permanent magnet operating is higher that generally more than 0.9,it enhances the utilization of permanent magnets.
As the Halbach magnet is divided into magnetized results, resulting in its permanent magnet operating is higher that generally more than 0.9,it enhances the utilization of permanent magnets.
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