Siemens upgrades 3 MW wind turbines

Siemens Energy has uprated its D3 onshore platform wind turbines. The new SWT-3.2-101, SWT-3.2-108 and SWT-3.2-113 machines feature improved performance from 3.0 to 3.2 MW and implement the sum of design and operational experiences.

The uprated products will enter serial production by the end of 2014. They will be available with 101- and 108-meter rotors for IEC class IA sites, and a 113-meter rotor for IEC class IIA sites. The 3 MW version will remain available for project sites with lower wind speeds.

Siemens developed its first commercial direct drive wind turbine in 2009. Following five years of experience and a large number of D3 wind turbines installed worldwide, the fundamental approach remains the same, but the technology continues to be refined.

Improvements in the turbine control system and increased efficiency through the use of stronger magnets are the key factors that allowed Siemens to get more wind power out of the D3 drivetrain.

The uprating underlines the structural reserves already found in the construction of Siemens' gearless wind turbines.

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