Rotor assembly and self-starting permanent magnet synchronous reluctance motor

Abstract

The invention provides a rotor assembly and a self-starting permanent magnet synchronous reluctance motor. The rotor assembly comprises a rotor iron core (1), the cross section of the rotor iron core (1) is provided with a shaft hole (6), a mounting groove and staggered filling grooves (3), permanent magnets (5) are arranged in the mounting groove, at least two layers of permanent magnets (5) are arranged in the d-axis direction, a magnetic conduction channel is formed between every two adjacent permanent magnets (5), and the staggered filling grooves (3) are arranged in the magnetic conduction channels and extend in the extending direction of the magnetic conduction channels. The staggered filling grooves (3) are of a sectional structure, and the multiple sections of staggered filling grooves (3) are arranged at intervals in the extending direction of the magnetic conduction channels. According to the rotor assembly, the structures of the filling grooves and the permanent magnets can be reasonably distributed, the storage space of the permanent magnets is increased, and the permanent magnet torque and efficiency of the motor are 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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