wind

Siemens has begun field testing 154-meter rotor

Siemens Energy has begun field testing its new 154 meter rotor for the 6 MW offshore wind turbine in Østerild, Denmark.
Siemens has begun field testing 154-meter rotor

The SWT-6.0-154 turbine is equipped with the world’s longest rotor blades, each of which is 75 meters in length.

With a record rotor diameter of 154 meters, each SWT-6.0-154 turbine can produce 25 million kilowatt hours of clean electricity in offshore locations, enough to supply 6,000 households, Siemens said.

Siemens installed the first prototype of its new 6 MW turbine using a 120 meter rotor in May 2011. It has now been operating successfully for well over a year.

The serial version of the 6 MW turbine will use the 154 meter rotor and is expected to become the new benchmark in the offshore wind industry.

“The start of field testing of the 154 meter rotor for the 6 MW is an exciting step in the development of competitive technologies for the large offshore wind farms of the future," said Henrik Stiesdal, CTO of the Wind Power Division within the Siemens Energy Sector. "We incorporated our technological expertise gained over more than three decades into the development of both the gearless turbine and its 75-meter rotor blade.”

The gearless drive technology permits a compact design: Using Siemens` Direct Drive technology the SWT-6.0 is the lightest turbine in its class, having a nacelle weight of only 200 tons.

Siemens developed the SWT-6.0 specifically for demanding conditions in offshore locations.

“The new 6-megawatt turbine is a milestone in wind energy technology,” Stiesdal said. “Compared to our first 30-kilowatt turbine, which we developed 30 years ago, the new STW-6.0-154 will produce over a thousand times more energy per year.”

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