Deep_Water
Deep_Water
Deep_Water
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Hywind<br />
Descriptions provided by the projects<br />
Design name<br />
Company<br />
Manufacturer<br />
Type of floater<br />
Hywind<br />
Statoil<br />
Siemens<br />
Spar-buoy<br />
Turbine capacity<br />
2.3 MW (prototype)<br />
3-7 MW (commercial)<br />
Prototype installed<br />
2009, West coast of<br />
Norway<br />
Commercial installation 2015-2016<br />
Origin<br />
Norway<br />
The Hywind design consists of a slender, ballaststabilised<br />
cylinder structure. The spar-type floater has<br />
a low water plane area that minimises wave induced<br />
loading, and a simple structure that minimises production<br />
cost. It can be used with any qualified offshore<br />
wind turbine. The mooring system consists of three<br />
mooring lines connected to the hull by means of bridles<br />
that prevent excessive rotation about the vertical<br />
axis (yaw motion). The mooring system has inherent<br />
design redundancy, with adequate reserve strength in<br />
case of a mooring line failure.<br />
The 2.3 MW Hywind demo was installed in Norway in<br />
2009 - the world’s first full scale floating offshore wind<br />
turbine. The unit is located at a water depth of 200m,<br />
10km off Norway’s west coast. It has been thoroughly<br />
inspected after the first and second years in service,<br />
and no signs of deterioration, damage, or wear connected<br />
to being on a floater have been reported. Statoil<br />
now considers the design to be technically verified.<br />
The floater design has been optimised and up-scaled<br />
for deployment with multi-MW turbines in the 3 MW to<br />
7 MW range. The next step will be to test the design in<br />
a pilot farm with four to five units.<br />
<strong>Deep</strong> <strong>Water</strong> - The next step for offshore wind energy 41
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