Rotor2
Teg the energy generators bildmarke mit titel weiss

The next
evolution
stage for
rotor blades

Ultra-quiet
airfoils

Minimised
loads

THE IDEA:
AERODYNAMICALLY
PERFECTED ROTOR BLADES
MODELLED ON NATURE

Illu buckelwal tuberkel blau mit symbol

Over 25,000 wind turbines are in operation throughout Germany. If each of these were to run for just one single year longer than up to now, an additional output of 25,000 operating years could be gained. This total would be vastly multiplied worldwide.

TEG wants to enhance the potential of wind energy. But how?

In our search for a solution, we came across a discovery from research into bionics. Despite a body weight of up to 25 tonnes, humpback whales are able to manoeuvre in the sea with outstanding agility. Researchers discovered that this astounding mobility is made possible by tubercles on the leading edges of their flippers. Tubercles delay flow separation and increase lift.

At the German Aerospace Centre (DLR), the tubercle effect has been confirmed in conjunction with the development of optimised helicopter rotor blades.

What works on a helicopter can also have a positive effect on wind turbines: less vibration, less noise, a longer service life.

2016 the idea has been awarded a prize. Research scientist Dr. Holger Mai working at the German Aerospace Centre was presented with the innovation award by the Lower Saxony Ministry of the Environment.

THE SOLUTION:
TUBERCLES ON
THE LEADING EDGES OF
THE ROTOR BLADES

THE SOLUTION:
TUBERCLES ON
THE LEADING EDGES OF
THE ROTOR BLADES

Tubercles on the blades reduce abrupt changes in lift and resistance. The point from which the rotor blades begin to shake and get louder is significantly delayed.

In September 2016, the DLR conducted new tests on a 2.0 MW rotor blade model on behalf of TEG in a wind tunnel at the Institute of Aerodynamics and Flow Technology in Brunswick, Germany. Here are the first results:

Load reduction: A 6-8 % reduction in the fatigue loads extends the service life of the main components of wind turbines by 25 % or more!

Noise reduction: While measurements from research institutes worldwide assume that a reduction in noise emissions of up to -4 dB can be achieved using the tubercle technology, initial wind tunnel measurements indicate a reduction of at least -2 dB, whereby there is an evident upward potential in the measurements.

That‘s why we say: The tubercle technology is the key to an aerodynamic revolution in rotor blade design.

Symbol windenergieanlage 104

THE SOLUTION FOR EXISTING WIND TURBINES: THE TEG RETROFIT KIT.

The TEG retrofit kit is a modular system for retrofitting the rotor blades of existing turbines – easy to install, and made of glass fibre-reinforced, weather-resistant plastic (GRP). Designed for all types of turbine and wind farm, the TEG retrofit kit is individually calculated and adapted. For an exact fit on the airfoils.


THE SOLUTION FOR NEW WIND TURBINES: FLOW-OPTIMISED ROTOR BLADES.

The tubercle technology is generally suitable for all types of rotor blades. TEG assists manufacturers of wind turbines in designing flow-optimised rotor blades. We offer the expertise we have accumulated from the development of numerous rotor blades and wind turbines, aerodynamics and flow simulations, calculation of dynamic loads, planning wind power projects, etc.

THE ADVANTAGES:
ULTRA-QUIET AIRFOILS,
MINIMISED LOADS,
LONGER SERVICE LIFE

THE TUBERCLE TECHNOLOGY – FOR A SIGNIFICANT REDUCTION IN LOADS AND NOISE EMISSIONS.

• Less stress on critical components caused by vibrations
• Significantly longer service life for wind turbines

• Reduced noise emissions
• Turbines can be kept operating at night
• Quieter wind turbines lead to greater acceptance of wind energy among the population

• Foreseeably smaller "wakes" and better flow-off behaviour
• Possible to build more densely populated wind farms

• Reduction in service life-related operating costs
• Performance boost for wind turbines
• Higher added value

Symbol windenergieanlage 104

ARE YOU A WIND FARM OPERATOR?

Optimise your existing wind turbines with the TEG retrofit kit to enjoy the benefits of the tubercle technology. For quieter running and a longer service life.

Do you require more detailed information about the TEG retrofit kit and a personal consultation?

Queries

ARE YOU A WIND TURBINE MANUFACTURER?

Benefit from the advantages of the patented tubercle technology. For aerodynamic perfection of your own rotor blades.

If you require more information about the tubercle technology and want a personal meeting with TEG:

Queries

Contact

Symbol windenergieanlage 104 weiss
TEG Tubercle Engineering Group GmbH
Landsberger Str. 155 / 3
80687 Munich
Germany
www.teg-group.de
Cert. Geographer Bernhard Gubo (CEO)
Tel. +49 171 20 41 844
b.gubo@teg-group.de

Scandinavian office

TEG Tubercle Engineering Group GmbH/
Övermöhle Consult & Marketing GmbH
Slagelsevej 13
6000 Kolding
Denmark
Cert.engineer Niels Immerkjær
(Head of Sales Scandinavia)
Tel. +45 40 374 744
n.immerkjaer@teg-group.de
www.oevermoehle-consult.de/en
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