Environmental Engineering Reference
In-Depth Information
As a direct result and with inspiration from the wind study
tour to California, a wind turbine manufacturing company named
Dencon was founded by three people, Leif Gottlieb, John Dreyer
and me in 1986. It had company address on Ærø . The production of
wind turbines took place at the Ærøskøbing Shipyard. Folkecenter
supplied drawings and consultancy.
First a 75 kW turbine on lattice tower was erected at Ærø .
The blades were well proven LM 8.5 m with spoiler type air brakes.
The integrated gearbox came from Finnish Valmet and had a safety
factor of two or so being of 145 kW for a 75 kW wind turbine.
ABB delivered the generator, which was flange, connected to the
gearbox. The yaw gear motor and the brake calibres were bolted
directly to the gearbox according to the design principles that the
Folkecenter director, Preben Maegaard, had developed during
the early 1980s. The concept made it possible for newcomers
and small industries to become manufacturers of state-of-the-art
wind turbines even without their own engineering competences
within wind power.
Figure 12.5
Installation of the Dencon 75 kW wind turbine (left); Dencon
integrated gearbox with generator (right).
The blacksmiths who dismantled the 75 kW turbine, after 20
years of trouble-free operation, found it as far the best of all Vestas
and Nordtank turbines they had ever dismantled. This proves well
that in the early 1980s even small companies and shipyards were
able to manufacture wind turbines to the highest international
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