Rotor assembly and self-starting permanent magnet synchronous reluctance motor

Abstract

The present application provides a rotor assembly and a self-starting permanent magnet synchronous reluctance motor. The rotor assembly includes a rotor core (1), the cross section of the rotor core (1) is provided with a shaft hole (6), a mounting groove and a dislocation filling groove (3), and a permanent magnet (5) is disposed in the mounting groove, There are at least two layers of permanent magnets (5) arranged along the d-axis direction, magnetic conduction channels are formed between adjacent permanent magnets (5), dislocation filling grooves (3) are arranged in the magnetic conduction channels, and extend along the magnetic conduction channels extending in the same direction, the dislocation filling grooves (3) have a segmented structure, and the multi-segment dislocation filling grooves (3) are arranged at intervals along the extending direction of the magnetic conduction channel. According to the rotor assembly of the present application, the structure of the filling slot and the permanent magnet can be allocated reasonably, the space for placing the permanent magnet can be increased, and the permanent magnet torque and efficiency of the motor can be improved.

Description

technical field [0001] The present application relates to the technical field of motors, in particular to a rotor assembly and a self-starting permanent magnet synchronous reluctance motor. Background technique [0002] Self-starting permanent magnet assisted synchronous reluctance motor combines the advantages of asynchronous motor on the basis of permanent magnet assisted synchronous reluctance motor. torque to achieve constant speed operation. Compared with the asynchronous motor, the motor can run at a constant speed with low rotor loss and high efficiency; compared with the asynchronous start permanent magnet synchronous motor, the permanent magnet consumption is small and the motor cost is low. [0003] However, the rotor of the self-starting permanent magnet assisted synchronous reluctance motor is equipped with filling slots and permanent magnets at the same time, and the areas of the two are mutually restricted, which limits the improvement of the permanent magnet ...

AI Technical Summary

Problems solved by technology

[0003] However, the rotor of the self-starting permanent magnet assisted synchronous reluctance motor is equipped with filling slots and permanent magnets at the same time, and the areas of the two are mutually restricted, which limits the improvement of the permanent magnet torque and efficiency of the motor.

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