ADD.Sound – Active Damper for Gearbox Tonalitity Reduction
The increasing power of modern wind turbines often leads to an intensification of tonal noises. That issue becomes particularly apparent in practice when rising noise levels interfere with operation and can result in yield losses. An effective solution is provided by ADD.Sound. How does it work? Read on to find out:
Especially new, high-performance wind turbine types often generate more tonalities due to:
- optimized powertrain,
- improved aerodynamics,
- larger operational ranges,
- larger rotor diameters and
- higher towers.
These tonalities are unfortunately perceived as highly unpleasant by many people, especially local residents...
... and this also sounds problematic for authorities.
Non-compliance with legal standards carries significant penalties, including the possibility of shutting down operations.
The result is substantial yield losses...
... but fortunately, there is ADD.Sound.
This active damper reduces tonalities across the entire frequency range.
By generating precisely controlled counter-vibrations on the gearbox or in the hub, tonalities are compensated for across the entire speed range – directly at the source.
With ADD.Sound, we are technology and market leaders in active damping.
For many years, we have successfully reduced the tonalities emitted by the tower and rotor blades, while ensuring compliance with legally mandated noise limits.
The result: satisfied residents and successful wind farm operators.
ADD.Sound guarantees you a quiet and profitable operation 24/7 and pays for itself in no time through the increased yield.
Calculate your individual amortization period here and convince yourself with our numerous references.
Fast amortisation due to increased yield
By moving the black dots you can calculate your individual payback period with our interactive tool. This calculation includes all costs including installation.
Amortisation after
12months
not possible
What makes us the technology and market leader in the field of active damping solutions
ADD.Sound combines efficiency, flexibility, and scalability to ensure optimal vibration damping in wind turbines.
High force scalability through multiple actuators, allowing flexible adaptation to various requirements.
High damping force with minimal moving mass, enabling efficient vibration reduction.
Flexible positioning on the gearbox or hub thanks to a modular concept, facilitating easy integration even in confined spaces.
Retrofit option available, allowing for seamless upgrades to existing systems.
Broadband compensation across the entire operational range, without the need for hardware adjustments.
Simultaneous compensation of multiple vibration orders (Single or synchronous damping of 1st and 2nd gear mesh / excitation frequency).
Damping of all relevant gearbox or hub modes (e.g., rolling, yaw, pitch, and torsion).
The system is not only highly efficient on paper, but it has also proven itself in field:
Robust system with
well tested hardware
7 customers,
including 5 OEMS
Reduction of tonality
by up to 10-15 dB
2,500+ delivered
actuators
5,000 N damping
force per actuator
15+ equipped WT types –
with and without gearbox
References
When wind turbines start to swing, individual frequencies can become audible in the background noise of the turbine. Such sound content is particularly unpleasant to the human ear. Therefore, there is a risk of surcharges in the evaluation of noise emissions and reduced power operation. Active vibration dampers can
reduce these frequencies.
Please contact us personally
________
We will be happy to support you with any questions regarding the efficient reduction of tonalities as well as our active vibration damper ADD.Sound.
Industrial engineering in dual study programme, Osnabrück University of Cooperative Education
Bachelor of Engineering (B.Eng.)
Let the wind do its job!
A family business of colleagues with such deep expertise that we can work at eye level with the leading international OEMs in the wind industry.
Very broad field of work with the opportunity to tackle and implement things.
Great colleagues with fun and joy.
Cool location in Hamburg :-)
Civil Engineering, TU Berlin
Dipl.-Ing.
WAB e.V.
"Paths are created by walking them." (Franz Kafka)
Working independently in a flexible, highly innovative company that makes a little contribution to the energy transition.
Sales Engineering and Product Management, Ruhr University Bochum
Master of Science (M.Sc.)
The collegial, friendly, and fair interactions, the unwavering helpfulness of all colleagues, and the genuine sense of working together towards a common goal. Additionally, the strong company know-how and immense variety naturally foster joy in the work.
Wirtschaftsingenieur an der FH Westküste in Heide
Bachelor of Science (B.Sc.)
"The secret of success is to do the common thing uncommonly well." – John D. Rockefeller Jr.
Working in an innovative company that works together to develop solutions for a sustainable future. As a young professional, I particularly appreciate the friendly and helpful colleagues. Wölfel also offers a varied working environment in which exciting projects are designed and successfully implemented together with the customer.
Industrial engineering in dual study programme, Osnabrück University of Cooperative Education
Bachelor of Engineering (B.Eng.)
Let the wind do its job!
A family business of colleagues with such deep expertise that we can work at eye level with the leading international OEMs in the wind industry.
Very broad field of work with the opportunity to tackle and implement things.
Great colleagues with fun and joy.
Cool location in Hamburg :-)
Civil Engineering, TU Berlin
Dipl.-Ing.
WAB e.V.
"Paths are created by walking them." (Franz Kafka)
Working independently in a flexible, highly innovative company that makes a little contribution to the energy transition.
Sales Engineering and Product Management, Ruhr University Bochum
Master of Science (M.Sc.)
The collegial, friendly, and fair interactions, the unwavering helpfulness of all colleagues, and the genuine sense of working together towards a common goal. Additionally, the strong company know-how and immense variety naturally foster joy in the work.
Wirtschaftsingenieur an der FH Westküste in Heide
Bachelor of Science (B.Sc.)
"The secret of success is to do the common thing uncommonly well." – John D. Rockefeller Jr.
Working in an innovative company that works together to develop solutions for a sustainable future. As a young professional, I particularly appreciate the friendly and helpful colleagues. Wölfel also offers a varied working environment in which exciting projects are designed and successfully implemented together with the customer.
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