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 core (1). A shaft hole (6), slit grooves (2), q-axis squirrel cage grooves (3) and permanent magnets (4) are arranged on the rotor core (1) on a cross section perpendicular to a central axis of the rotor core (1), the q-axis squirrel cage grooves (3) are arranged at two ends of the slit grooves (2), the permanent magnets (4) are mounted at two ends of at least part of the slit grooves (2), and the two permanent magnets (4) in the same slit groove (2) are arranged at intervals. According to the rotor assembly, the utilization rate of the rotor space can be increased, the permanent magnet torque of the motor is increased while the reluctance torque of the motor is utilized, the iron loss of the motor is reduced, and the output and efficiency of the motor are improved.

Description

[0001] This application claims the priority of the Chinese patent application with application number 2021101026526 and titled "Rotor Assembly and Self-Starting Permanent Magnet Synchronous Reluctance Motor" filed with the China Patent Office on January 26, 2021, the entire contents of which are incorporated by reference in this application. technical field [0002] 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 [0003] 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, t...

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Problems solved by technology

[0004] However, the rotor of the self-starting permanent magnet assisted synchronous reluctance motor is equipped with a magnetic barrier layer and a magnetic conduction channel at the same time. As a result, the saturation degree of the rotor core is high, and setting the magnetic barrier layer and the permanent magnet at the same time will further increase the saturation of the motor, resulting in an increase in the iron loss of the motor and a decrease in the efficiency of the motor

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