Permanent magnet assisted synchronous reluctance motor rotor device

Abstract

The invention discloses a permanent magnet assisted synchronous reluctance motor rotor device, and belongs to the technical field of motor structures. The permanent magnet assisted synchronous reluctance motor rotor device comprises an iron core, a multi-layer air magnetic barrier structure, a main permanent magnet, an auxiliary permanent magnet and U-shaped grooves, wherein the iron core is formed by laminating iron core punching sheets and then fixing the laminated iron core punching sheets by rivets; the main permanent magnet and / or the auxiliary permanent magnet are / is arranged in the multi-layer air magnetic barrier structure; and the number of the U-shaped grooves is the same as the number of poles of the motor, and the opening angle and the opening direction are the same as the opening angle and the opening direction of the multi-layer air magnetic barrier structure. According to the permanent magnet assisted synchronous reluctance motor rotor device provided by the invention, relatively low torque ripple can be obtained, the counter electromotive force tends to be more sinusoidal, harmonic waves are effectively reduced, and the permanent magnet assisted synchronous reluctance motor rotor device has more excellent weak magnetic performance and lower iron loss.

Description

technical field [0001] The invention relates to the technical field of motor structure, in particular to a permanent magnet assisted synchronous reluctance motor rotor device. Background technique [0002] There is no winding on the rotor of the synchronous reluctance motor, which has high efficiency, low price, simple processing, reliable structure and relatively simple control. Compared with the induction motor, it has fewer consumables and a larger starting torque. It can be used in lifting, field of transportation. Synchronous reluctance motors are less noisy than switched reluctance motors. These advantages make the synchronous reluctance motor have unique advantages in some fields, so it has received extensive attention and has good development and application potential. [0003] However, since the power factor and efficiency of the synchronous reluctance motor still need to be improved, on this basis, a new type of permanent magnet assisted synchronous reluctance mo...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a permanent magnet assisted synchronous reluctance motor rotor device to solve the problems of permanent magnet assisted synchronous reluctance motor torque pulsation, high harmonic content, large iron loss, and poor magnetic performance. Back EMF tends to be more sinusoidal

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