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

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 ...

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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

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