Permanent magnet rotor magnetic coupling based on double-sided stepped structure and three-dimensional Halbach magnetic pole arrangement

A permanent magnet rotor magnetic coupling based on a double-sided stepped structure and a three-dimensional Halbach magnetic pole arrangement, comprising a non-magnetic conductor outer rotor assembly (1), and a magnet inner rotor assembly (2) arranged inside the non-magnetic conductor outer rotor assembly (1),

• wherein the non-magnetic conductor outer rotor assembly (1) comprises a right outer rotor assembly (3), a left outer rotor assembly (3′) and a first bearing for connecting the right outer rotor assembly (3) with the left outer rotor assembly (3′);
• the right outer rotor assembly (3) comprises a non-magnetic right conductor yoke (301), and a plurality of non-magnetic conductive rings;
• a plurality of non-magnetic conductive ring grooves are formed in the non-magnetic right conductor yoke (301), and the non-magnetic conductive ring grooves are arranged in a stepped manner;
• the non-magnetic conductive rings are assembled inside the non-magnetic right conductor yoke (301) through the non-magnetic conductive ring grooves;
• the left outer rotor assembly (3′) has a same structure as that of the right outer rotor assembly (3);
• the magnet inner rotor assembly (2) comprises a right inner rotor assembly (4), a left inner rotor assembly (4′) and a second bearing for connecting the right inner rotor assembly (4) with the left inner rotor assembly (4′);
• the right inner rotor assembly (4) is assembled with the right outer rotor assembly (3);
• and
• the left inner rotor assembly (4′) is assembled with the left outer rotor assembly (3′);
• the right inner rotor assembly (4) comprises a right magnet yoke (401), and a plurality of magnetic rings;
• a plurality of magnetic ring grooves are formed in a surface of the right magnet yoke (401), and the magnetic ring grooves are arranged in a stepped manner;
• the magnetic rings are assembled to the surface of the right magnet yoke (401) through the magnetic ring grooves;
• the left inner rotor assembly (4′) has a same structure as that of the right inner rotor assembly (4);
• the magnet inner rotor assembly (2) is coupled with the non-magnetic conductor outer rotor assembly (1);
• wherein the non-magnetic conductive ring and the magnetic ring are arranged in pairs;
• each of the plurality of magnetic rings comprises a plurality of magnetic blocks, and all magnetic blocks are arranged in a three-dimensional Halbach magnetic distribution manner;
• wherein the magnetic blocks in different magnetic ring grooves have different magnetic directions;
• and
• when the permanent magnet rotor magnetic coupling operates, the non-magnetic conductive ring and the magnetic ring rotate with respect to each other, and the non-magnetic conductive ring generates an induced current under the action of an inherent magnetic field of the magnetic ring, and in turn generates an induced magnetic field, and an interaction between the induced magnetic field and the inherent magnetic field enables power to be transferred.