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Rotor structure, permanent magnet synchronous motor and rotor structure assembling method

A technology of rotor structure and inner rotor, which is applied in electromechanical devices, manufacture of motor generators, manufacture of stator/rotor body, etc., can solve problems such as inability to take into account the angle of inclination or shape adjustment, and achieve the best effect of vibration reduction and noise reduction. The effect of flexible adjustment method and simple overall structure

Active Publication Date: 2021-06-01
GREE ELECTRIC APPLIANCES INC
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, for the rotor structure of the existing permanent magnet synchronous motor, there is a problem that the angle or shape adjustment of the oblique pole cannot be adjusted when the rotor oblique pole is used to reduce the cogging torque

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  • Rotor structure, permanent magnet synchronous motor and rotor structure assembling method
  • Rotor structure, permanent magnet synchronous motor and rotor structure assembling method
  • Rotor structure, permanent magnet synchronous motor and rotor structure assembling method

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Embodiment Construction

[0030] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0031] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description. It is not intended to indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and operate in a particular orientation, and thus should not be con...

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Abstract

The invention relates to the technical field of motors, and concretely relates to a rotor structure, a permanent magnet synchronous motor and a rotor structure assembling method. The permanent magnet synchronous motor comprises a rotor structure, the rotor structure comprises an inner rotor, an outer rotor set and a fixing assembly, the inner rotor is fixedly arranged on a rotating shaft in a sleeving mode, the outer rotor set comprises a plurality of outer rotors which are sequentially arranged in the axis direction of the inner rotor and all arranged outside the inner rotor in a sleeving mode, and each outer rotor is provided with a permanent magnet; and any outer rotor can rotate relative to the inner rotor, and the fixing assembly is used for fixing each outer rotor rotating to the target state relative to the inner rotor. According to the rotor structure, the angle or the shape of the skewed pole is adjusted while the cogging torque is reduced by adopting the rotor skewed pole, so that electromagnetic vibration and noise caused by torque fluctuation in the operation process of the permanent magnet synchronous motor can be reduced, various skewed pole angles or shapes can be formed, and the vibration and noise reduction effect is optimal.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a rotor structure, a permanent magnet synchronous motor and a method for assembling the rotor structure. Background technique [0002] Permanent magnet synchronous motors are excited by permanent magnets. Because of their advantages such as high operating efficiency, reliable operation, low price, and low energy consumption, they have become the motor category with the largest vehicle load in the country. [0003] During the operation of the permanent magnet synchronous motor, cogging torque will inevitably be generated due to the interaction between the permanent magnet and the armature teeth, or due to the radial attraction between the stator and the rotor and the permanent magnet, etc., resulting in The permanent magnet synchronous motor fluctuates during operation, and this fluctuation will cause electromagnetic vibration and noise of the permanent magnet synchronous motor, es...

Claims

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Application Information

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IPC IPC(8): H02K1/27H02K15/03
CPCH02K1/2786H02K1/2706H02K15/03
Inventor 王竞杰谷欢欢张荣婷宋云逸王杰江峰
Owner GREE ELECTRIC APPLIANCES INC
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