Low-wind site turbine

Delivering 3.3 MW of electric power, Siemens’ new SWT-3.3-130 wind turbine extracts the maximum energy yield from low to moderate wind velocities. With its rotor measuring 130 meters in diameter, the direct-drive permanent magnet generator operates with even stronger permanent magnets to further enhance output. The designs of the nacelle, bedplate, yaw drive, and other components important to unit statics have also been strengthened to accommodate the long rotor. 

 

As the servo-motors ensure precise rotation of the nacelle (even at high wind pressures), strong hydraulic cylinders in the newly designed rotor hub enable exact adjustment of rotor blade angle. The SWT-3.3-130 uses B63 blades, measuring 63 meters in length. These aero-elastically tailored blades limit the static loading of the nacelle and tower, particularly under turbulent wind conditions, and the blade ends act to cushion and absorb high wind pressure. A further innovation of the SWT-3.3-130 includes a newly designed cooling system, which has been integrated into the nacelle to ensure optimum performance of the generator and other electrical components. 

 

Siemens Canada

www.siemens.ca