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

A technology of protective structure and installation method, applied in the direction of magnetic circuit shape/style/structure, electromechanical device, magnetic circuit rotating parts, etc., can solve the problems of small rotor axial ventilation, poor rotor heat dissipation, and increased motor manufacturing cost, etc.

Active Publication Date: 2021-09-24
SHANGHAI ELECTRIC WIND POWER GRP CO LTD
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  • Summary
  • 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 a magnetic pole. An unshielded axial channel is formed between the two rows of magnetic poles, and the magnetic pole protection structure includes: several magnetic pole protection bands arranged at intervals along the circumferential direction of the rotor yoke; each of the magnetic pole protection bands is buckled On a column of magnetic poles, the two ends of each of the magnetic pole guard bands are respectively fixed on the rotor yoke by fixing pieces, so that each of the magnetic pole guard bands abuts against the magnetic poles. The invention realizes that at the same time, the gap between the magnetic poles in the circumferential direction of the rotor is increased, the ventilation volume of the axial air passage of the rotor is increased, the temperature rise of the motor is reduced, the efficiency and power generation of the motor are improved, and the effective material consumption of the motor is further reduced, which brings great benefits to the motor. The purpose of reducing costs and increasing efficiency.

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 Patents(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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