Siemens has launched an extended portfolio of its onshore direct-drive wind turbines for optimum performance at low, medium-wind sites and for in noise-sensitive regions. Thanks to a modular platform concept, all three machines share the same nacelle design. Different controller settings and rotor diameters let the new turbines adapt to specific wind and site conditions.
As the second generation of onshore direct-drive technology was introduced two years ago with the Siemens’ SWT-3.3-130, all new models benefit from a short time-to-market. The new low-noise turbine (the SWT-3.3-130LN) and the new medium-wind speed turbine (the SWT-3.6-130) will go into serial production in early 2017. The low-wind speed turbine – the SWT-3.15-142 – will follow in late 2017.
“Our new wind turbine portfolio is the result of an intelligent platform strategy that allows maximum flexibility,” said Thomas Richterich, CEO Onshore of the Siemens Wind Power and Renewables Division. “Our customers benefit not only from benchmark-setting performance in different wind classes, but also from the adaptability of our technology that meets nearly every site, grid, and project-specific requirement. Thanks to digitalization, these turbines are open for further optimization and individualization.”
The SWT-3.3-130LN wind turbine is a low-noise version of the SWT-3.3-130 with reduced rotor speed and improved aerodynamics. It is based on proven Siemens direct-drive technology, and allows operation with a 104.9 db noise level at a wind speed of 6 m/s. The B63 blades of the SWT-3.3-130LN include new aerodynamic add-ons for optimized performance. In addition to the vortex generators applied on the blade backs, the trailing edges are equipped with Siemens DinoTails Next Generation.
Thanks to an uprated generator, the new SWT-3.6-130 is able to harvest an annual energy output of up to 17 GWh at 8.5 m/s. At the same wind speeds compared to the SWT-3.3-130 launched in 2014, this represents an improved AEP rating of 6%. With its high performance at IEC II sites, the SWT-3.6-130 sets a competitive benchmark for turbines designed to harvest maximum power outputs in environments with moderate wind conditions.
The new SWT-3.15-142 is the first Siemens’ direct-drive wind turbine dedicated for IEC Class III. It’s B69 rotor-blades are based on hybrid-carbon technology by LM Wind Power. With a rotor-diameter of 142 meters and tower configurations that allow hub heights up to 165 m, new standards for annual energy yields are set: Even at wind speeds of only 6 m/s, the machine harvests 10 GWhs of energy per year.
Filed Under: News, Projects, Turbines