Back to results
US 2008/0164091 A1Published application
Tonal emission control for wind turbines
AssigneeGeneral Electric Company
InventorLutz Kerber
Life of this patent
Estimating the term…
Abstract
A system for the noise reduction of wind turbines comprises at least one acoustic sensor provided at the wind turbine, a detection unit and a control unit, wherein said detection unit is adapted to detect tonal components in a signal of said sensor, and wherein said control unit is adapted to control wind turbine operating parameters in dependence of an amplitude of a tonal component.
Claims20
A system for the noise reduction of wind turbines, comprising:
- at least one acoustic sensor providing a signal, adapted for attachment to a wind turbine,
- a detection unit, and
- a control unit,
- wherein said detection unit is adapted to receive a sensor signal from said sensor and to detect a tonal component in said signal, and said control unit is adapted to receive an input from said detection unit, and to control at least one wind turbine control parameter in dependence of an amplitude of said tonal component in order to lower said amplitude.
1 more element
A wind turbine comprising a system for the reduction of tonal noise emissions, comprising:
- at least one acoustic sensor providing a signal, adapted for attachment to a wind turbine,
- a detection unit, and
- a control unit,
- wherein said detection unit is adapted to receive a sensor signal from said sensor and to detect a tonal component in said signal, and said control unit is adapted to receive an input from said detection unit, and to control at least one wind turbine operating parameter in dependence of an amplitude of said tonal component in order to lower said amplitude.
1 more element
A method to reduce tonal noise emissions of wind turbines, comprising the steps of:
- monitoring an acoustic emission of a wind turbine,
- detecting a tonal component in said acoustic emission,
- if an amplitude of said tonal component exceeds a predefined level, controlling at least one control parameter of said wind turbine to reduce said amplitude of said tonal component.
Dependencies are inferred from the claim text.