Wind Turbine Resonator Module for Vibration Reduction
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Solution Overview
Problem
Wind turbines experience mechanical resonance due to vibrations from sources like generators and gearboxes, leading to structural damage and noise pollution, as existing technologies fail to effectively mitigate these issues.
Innovation Solution
A wind turbine design incorporating a resonator module that is operably coupled to components, vibrating at specific resonant frequencies with a wavelength length of a quarter, to induce destructive interference and reduce vibration magnitude, using magnetic or adhesive coupling and potentially multiple resonator modules for various frequencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a resonator module is added to reduce vibration, then vibration amplitude and noise are reduced, but device complexity increases
Solution Approach 1:
The resonator module converts harmful vibrations into beneficial destructive interference. By tuning the resonator's natural frequency to match the component's resonant frequency, the resonator absorbs vibration energy and generates counter-phase vibrations that cancel out the harmful resonance, transforming a harmful phenomenon into a beneficial vibration reduction mechanism
Solution Approach 2:
The solution utilizes mechanical vibration principles by designing a resonator module with specific dimensional parameters (length, width, thickness) that enable it to vibrate at a predetermined frequency matching the component's resonant frequency. The resonator's physical dimensions are carefully calculated to achieve the desired vibrational characteristics for effective interference
2Object-affected harmful factors
If the resonator module is tightly coupled to the component, then vibration reduction is improved, but the component's resonant frequency may shift
Solution Approach 1:
The resonator module acts as an intermediary element between the vibration source and the damping mechanism. It couples to the component at identified anti-node locations, providing a controlled interaction that reduces vibration without significantly altering the component's fundamental resonant characteristics, thus maintaining frequency accuracy while achieving vibration reduction
3Object-affected harmful factors
If multiple resonator modules are added for different frequencies, then vibration reduction across multiple frequencies is improved, but device complexity and cost increase
Solution Approach 1:
The resonator module design enables multi-functionality by allowing a single module type to address multiple resonant frequencies. By strategically placing resonator modules at different anti-node locations on the component, each tuned to specific frequencies, the system achieves broad-spectrum vibration reduction while maintaining a standardized module design that simplifies manufacturing and deployment
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The resonator module effectively reduces vibration amplitude and audible noise by inducing vibrations that destructively interfere with the original vibrations, thereby minimizing structural damage and noise pollution.
Implementation Method 1
the resonator module is arranged to vibrate with a first wavelength when excited at the first resonant frequency... the resonator module may vibrate with the same resonant frequency, with a standing wave reflected at the free end
Implementation Method 2
The induced vibration from the resonator module may therefore destructively interfere with the vibration induced by the vibration source such that the magnitude of the vibration in the component may be reduced
Implementation Method 3
The resonator module may be operably coupled to the component via a magnetic or adhesive coupling means
Implementation Method 4
The resonator module may be operably coupled to the component via a magnetic or adhesive coupling means
Data Source
AI summary
A wind turbine comprising: a vibration source; a component arranged to receive a vibration from the vibration source, the component having a first resonant frequency; and a resonator module arranged to vibrate with a first wavelength when excited at the first resonant frequency, the resonator module being operably coupled to the component at a first location, wherein the resonator module has a first length extending from the first location to a first free end of the resonator module, and wherein the first length of the resonator module is a quarter of the first wavelength.