Double-claw-pole-stator magnetic gathering type vernier motor

Abstract

The invention discloses a double-claw-pole-stator magnetic gathering type vernier motor. The motor comprises an inner stator, an outer stator and a rotor, wherein the rotor is an annular rotor, permanent magnets are circumferentially arranged on the rotor to generate an excitation magnetic field, an inner cylinder wall of the outer stator and an outer cylinder wall of the inner stator are circumferentially provided with multiple grooves uniformly, the grooves on the two stators are identical in number, outer stator teeth are formed on projection portions among the grooves on the outer stator, and inner stator teeth are formed on projection portions among the grooves on the inner stator. The vernier motor is characterized in that the grooves of the two stators are embedded with a three-phase four-level winding, and the inner stator teeth and the outer stator teeth are claw-shaped teeth. The vernier motor is advantaged in that through setting the two stators, the grooves on the inner and outer stators are embedded with the three-phase four-level winding, the magnetic gathering effect is realized, magnetic leakage of the rotor permanent magnets is reduced, and a utilization rate of the permanent magnets is improved.

Description

technical field [0001] The invention relates to a vernier motor, in particular to a vernier motor of a double-claw pole stator magnetic concentration type. Background technique [0002] Due to its compact structure, high power density and high efficiency, permanent magnet motors have been developed rapidly in recent decades. In the application of low speed and high torque, the direct drive of permanent magnet motor can save the gearbox, eliminate the noise and failure caused by gear meshing transmission, and improve the efficiency and reliability of the system. [0003] However, the use of traditional permanent magnet synchronous motors to achieve the purpose of low-speed high-torque drive has a relatively large volume and unsatisfactory indicators such as torque density. In order to achieve low speed and high torque, researchers currently propose a variety of composite motors based on the combination of permanent magnet motors and new magnetic gears. This type of motor com...

AI Technical Summary

Problems solved by technology

Compared with the traditional permanent magnet vernier motor, this invention improves the problems of low motor torque density, bulky structure, etc., but still does not solve the problems of high cogging torque and low power factor of the permanent magnet vernier motor

Images