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Vibration and noise reduction structure for generator assembly, generator assembly and generator

A technology for vibration reduction and noise reduction and generator set, which is applied in the field of motor vibration reduction and noise reduction structure, generator set vibration reduction and noise reduction control, and generator field. Improve ventilation performance, reduce processing costs and manufacturing complexity, save construction costs

Active Publication Date: 2016-04-13
BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The second prior art mentions the use of sound-absorbing materials and elastic supports to reduce high-frequency vibrations. For direct-drive units, these two methods are difficult to implement, such as sound-absorbing materials are not easy to construct, and elastic supports are difficult for structural layout, etc. question

Method used

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  • Vibration and noise reduction structure for generator assembly, generator assembly and generator
  • Vibration and noise reduction structure for generator assembly, generator assembly and generator
  • Vibration and noise reduction structure for generator assembly, generator assembly and generator

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Embodiment Construction

[0034] Preferred embodiments of the present invention will be specifically described below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the application and are used to explain the present invention together with the embodiments of the present invention.

[0035] For direct-drive wind turbines, the structural characteristics of the generator have similar frequency and phase characteristics to the electromagnetic force of the generator. From the perspective of structural design and simulation analysis, the present invention designs a new type of structure fixed on the outer wall of the thin-walled structure of the generator rotor so that the structural characteristics of the generator rotor avoid its electromagnetic force similar to the mid-high frequency band and phase characteristics, thereby reducing power generation. The structure noise of the machine in the middle and high frequency bands.

[0036] According to the st...

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PUM

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Abstract

The invention discloses a vibration and noise reduction structure for a generator assembly, the generator assembly and a generator. A vibration and noise reduction ring vertical to the outer wall is arranged on the outer wall of a thin-walled cylinder of a generator rotor or stator; the axial direction of the vibration and noise reduction ring is consistent with that of the thin-walled cylinder; and the vibration and noise reduction ring can comprise a main ring and an auxiliary ring, which are arranged in parallel to inhibit high-frequency vibration. According to a petal-shaped vibration mode of a thin-walled structure of a direct-driven wind turbine generator set, the vibration and noise reduction ring is arranged on the outer wall of the structure; the petal-shaped radial vibration mode is eliminated; radial vibration is effectively inhibited; structural noise is reduced; and the vibration and noise reduction structure is applicable to the wind turbine generator set.

Description

technical field [0001] The invention relates to the field of motors, in particular to a vibration and noise reduction control technology for a generator set. The invention particularly provides a motor vibration and noise reduction structure and a generator with the vibration and noise reduction structure. Background technique [0002] Due to its large size and thin-walled structure, direct-drive wind turbines have modal characteristics that are close to the phase of electromagnetic force, and the solutions to the resulting mid- and high-frequency vibration and noise fall into two categories, namely, changing the structural characteristics and changing the Electromagnetic excitation. Generally speaking, changing the method of electromagnetic force excitation will not increase the structural cost, but it will increase the heat loss of power generation and it is not suitable for stable control in the middle and high frequency bands. [0003] For the treatment of this kind of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K5/24
CPCH02K5/24
Inventor 杨振兴张志弘李双虎
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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