Rotor assembly, and motor

Abstract

The invention provides a rotor assembly, and a motor. The rotor assembly comprises a rotor body, wherein the rotor body is provided with magnetic poles which are uniformly arranged around the axis ofa rotor and in the circumferential direction of the rotor; each magnetic pole comprises filling grooves in which electrically conductive and magnetically insulating materials are arranged; the fillinggrooves in the magnetic poles are sequentially arranged in the circumferential direction of the rotor body; and in the circumferential direction of the rotor, the two ends of each filling groove arerespectively provided with a first side wall and a second side wall, and the first side wall of each filling groove and the second side wall of the adjacent filling groove are parallel to each other and jointly form a magnetic flux channel parallel to the q axis. The rotor assembly and the motor provided by the invention have the advantages that the design is reasonable and the cost is low; and the magnetic flux on the q axis is smoother, and a magnetic flux difference between the d axis and the q axis is more obvious, so that the output power and efficiency can be further improved.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a rotor assembly and a motor. Background technique [0002] The direct start synchronous reluctance motor combines the structural characteristics of the induction motor and the synchronous reluctance motor. The torque is generated by the squirrel cage induction to realize the start, and the reluctance torque is generated by the rotor inductance gap to realize the constant speed operation. It can be directly connected to the power supply to realize the start operation. . Compared with the direct start permanent magnet motor, the direct start synchronous reluctance motor has no rare earth permanent magnet material, and there is no demagnetization problem, the motor cost is low, and the reliability is good; compared with the asynchronous motor, the efficiency is high and the speed is constant. [0003] The traditional synchronous reluctance motor requires a driver to start and contr...

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Problems solved by technology

[0005] However, in this patent, since the slots are radially arranged at equal intervals, the direction of the magnetic flux between the slots is perpendicular to the radial flow of the rotor surface, and the slots hinder the flow of the magnetic flux in the q-axis direction, especially the closer to d In the slot part of the shaft, the q-axis magnetic flux is hindered more obviously, and the d-axis magnetic flux flows more smoothly, so the difference between the d-axis and q-axis magnetic flux is not obvious, and the salient pole ratio is not large, resulting in low output power and efficiency

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