Permanent magnet synchronous motor and washing machine

Abstract

The invention relates to a permanent magnet synchronous motor and a washing machine. The permanent magnet synchronous motor comprises a rotor iron core and a stator iron core sleeved on the outside of the rotor iron core. The rotor iron core has a plurality of magnetic pole parts, and the plurality of magnetic pole parts form multiple A pair of poles, the two magnetic pole parts under the same pair of poles are N pole and S pole respectively; the magnetic pole part is fan-shaped, the central angle of the N pole is θ1, the central angle of the S pole is θ2, and the stator core has a plurality of pole shoes The angle between the two sides of the pole shoe portion along the circumferential direction of the stator core relative to the center of the stator core is θ, θ<θ1<θ2. The permanent magnet synchronous motor and the washing machine provided by the invention can optimize the structure of the rotor iron core, thereby reducing the radial electromagnetic force of the permanent magnet synchronous motor, thereby reducing the electromagnetic noise of the permanent magnet synchronous motor.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a permanent magnet synchronous motor and a washing machine. Background technique [0002] Permanent magnet synchronous motors are widely used in household appliances, such as the drum drive of washing machines, due to their simple structure, reliable operation, small size, light weight, high power density, and easy magnetic-weakening speed expansion. [0003] However, with the gradual improvement of people's requirements for laundry noise of washing machines, the importance of solving the noise of the motor in the dehydration state of the washing machine has become increasingly prominent. However, the existing motor is affected by electromagnetic force, the electromagnetic noise is obvious, and the sound quality is sharp, resulting in poor user experience. SUMMARY OF THE INVENTION [0004] Based on this, it is necessary to provide a permanent magnet synchronous motor and a washi...

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide a permanent magnet synchronous motor and a washing machine that can reduce electromagnetic noise and improve user experience in view of the problems that the existing motor has obvious electromagnetic noise and sharp sound quality, resulting in poor user experience.

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