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Magnetic pole protection structure, rotor, motor and rotor installation method

A technology of protection structure and installation method, applied in the fields of motor and rotor installation, magnetic pole protection structure, and rotor, can solve the problems of increased motor manufacturing cost, poor rotor heat dissipation, and small rotor axial ventilation.

Active Publication Date: 2020-06-26
SHANGHAI ELECTRIC WIND POWER GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a magnetic pole protection structure, a rotor, a motor and a rotor installation method to solve the existing problems of small axial ventilation of the rotor, poor heat dissipation of the rotor and increased manufacturing cost of the motor

Method used

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  • Magnetic pole protection structure, rotor, motor and rotor installation method
  • Magnetic pole protection structure, rotor, motor and rotor installation method
  • Magnetic pole protection structure, rotor, motor and rotor installation method

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Embodiment Construction

[0046] The following is attached Figure 4-9 and Specific Embodiments A magnetic pole protection structure, a rotor, a motor and a rotor installation method proposed by the present invention are further described in detail. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and all use imprecise scales, which are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention. In order to make the objects, features and advantages of the present invention more comprehensible, please refer to the accompanying drawings. It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementat...

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Abstract

The invention discloses a magnetic pole protection structure, a rotor, a motor and a rotor installation method. The magnetic pole protection structure is applied to multiple columns of magnetic poles,the magnetic poles are arranged in the circumferential direction of a rotor magnet yoke at intervals, and an unshielded axial channel is formed between every two adjacent columns of magnetic poles. The magnetic pole protection structure comprises a plurality of magnetic pole protection belts arranged in the circumferential direction of the rotor magnet yoke at intervals; each magnetic pole protection belt is buckled on a column of magnetic poles, and two ends of each magnetic pole protection belt are respectively fixed on the rotor magnet yoke by adopting fixing pieces, so each magnetic poleprotection belt is abutted against the magnetic poles. The purposes of enlarging the gaps of the magnetic poles in the circumferential direction of the rotor, increasing the ventilation quantity of anaxial air path of the rotor, reducing the temperature rise of the motor, improving the efficiency and generating capacity of the motor, further reducing the effective material consumption of the motor and bringing the benefits of cost reduction and benefit increase to the motor are achieved.

Description

technical field [0001] The invention relates to the technical field of wind power generators, in particular to a magnetic pole protection structure, a rotor, a motor and a rotor installation method. Background technique [0002] The rotor poles of large wind turbine generators can be fixed on the surface of the rotor bracket in various ways, one of the important fixing methods is the surface-mounted magnetic pole fixing method. The surface mount magnetic pole fixing method is usually to fix the magnetic steel on the surface of the rotor yoke by resin bonding. The process of the surface-mounted magnetic pole fixing method is generally divided into two types: one is that the magnetic steel is magnetized first, and then assembled and fixed on the rotor yoke; the other is that the magnetic steel is not magnetized first, and then assembled and fixed to the rotor yoke , and then magnetize the rotor poles as a whole. However, for generators of large-scale wind turbines, it is cur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/27H02K1/28H02K15/03
CPCH02K1/27H02K1/28H02K15/03
Inventor 孙杨程培瀚金广荣景建辉
Owner SHANGHAI ELECTRIC WIND POWER GRP CO LTD
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