A claw pole structure rotor with axial flux permanent magnets
A technology of axial magnetic flux and permanent magnet, applied in the direction of magnetic circuit shape/style/structure, magnetic circuit rotating parts, magnetic circuit, etc., can solve problems such as damage to surface-mounted permanent magnets, and improve work efficiency and work Environmental safety and the effect of expanding the capacity of the whole machine
Active Publication Date: 2018-07-24
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology
This limits the application of permanent disk motors in the field of high-speed motors, and unprotected surface-mounted permanent magnets are easily damaged at high speeds
Method used
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[0031] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.
[0032] figure 2 is the outer magnetic pole of the rotor constructed according to the preferred embodiment of the present invention; image 3 is the inner magnetic pole of the rotor constructed according to the preferred embodiment of the present invention; as figure 1 , figure 2 and image 3 As shown in the figure, the outer magnetic pole 1 of the rotor and the inner magnetic pole 2 of the...
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The invention belongs to the field of motor rotors and discloses a claw-pole-structure rotor of an axial flux permanent magnet. The claw-pole-structure rotor comprises an external magnetic pole, an internal magnetic pole, the permanent magnet and a rotating shaft, wherein the internal magnetic pole is sleeved inside the external magnetic pole, the internal magnetic pole and the external magnetic pole are in the shape of a claw pole, the permanent magnet is arranged between the internal magnetic pole and the external magnetic pole, radial flux is converted into axial flux, and the rotating shaft is arranged inside the internal magnetic pole. According to the claw-pole-structure rotor, the permanent magnet internally-embedded structure realizes the effects that the rotor can operate at high speed, the permanent magnet is not prone to damage, the permanent magnet is far away from a winding and the high temperature does not act on the permanent magnet directly, and the problem that the permanent magnet is demagnetized at high temperature is solved.
Description
technical field [0001] The invention belongs to the field of motor rotors, and more specifically relates to a claw pole structure rotor with axial flux permanent magnets. Background technique [0002] In recent years, rare earth permanent magnet materials have developed rapidly, and the remanence density and magnetic energy product of permanent magnets have been greatly improved, and they are increasingly used in motors. The use of permanent magnet excitation can bring many benefits: the electric excitation branch is saved, and there is no excitation loss; the brush structure can be removed, so that the motor failure rate and maintenance cost are reduced; the volume of the motor can often be reduced to make the structure more compact. [0003] There are two types of permanent magnets used in motors: surface-mounted and embedded. There are both surface-mount and embedded structures for traditional drum motors, but for motor structures with axial flux, since the magnetic circ...
Claims
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IPC IPC(8): H02K1/27H02K1/24
CPCH02K1/243H02K1/2713
Inventor 叶才勇梁欣徐伟
Owner HUAZHONG UNIV OF SCI & TECH