Onshore Wind Turbine features low-noise design.

Press Release Summary:

With aerodynamic rotor blade add-ons, Model SWT-3.3-130LN can be operated at noise level of 104.9 dB. In addition to vortex generators on blade surface, trailing edges are equipped with combination of serrations and combs. Each combed teeth element creates fine vortices at point where fast air stream from above blade profile meets slower air stream below, resulting in high performance at low rotor speed. At average wind speed of 6.5 m/s, turbine harvests Annual Energy Production of 11 GWH.


Original Press Release:

New Siemens Onshore Wind Turbine Offers Less Noise at Optimum Performance

  • SWT-3.3-130LN for noise sensitive sites
  • Noise level at 104.9 decibels
  • Serial production in early 2017

High performance at low to medium wind speeds – that’s what the new Siemens low noise SWT-3.3-130LN wind turbine offers customers. The new model operates at a reduced rotor speed compared to the SWT-3.3-130, and includes aerodynamic addons to its rotor blades. Utilizing these add-ons, it can be operated at a noise level of 104.9 decibels. The new machine will be available in early 2017 in parallel with two additional onshore models launched by Siemens at the WindEnergy 2016 trade show in Hamburg.

The fast air stream passing the tips of the rotor is primarily responsible for the characteristic noise of a wind turbine in operation. Aeroacoustic optimizations of the B63 blades allow silent operation of the new SWT--3.3-130LN turbine: In addition to vortex generators on the blade surface, trailing edges are equipped with a combination of serrations and combs, known as the new Siemens DinoTail Next Generation. Each combed teeth element creates fine vortices at the point where the fast air stream from above the blade profile meets the slower air stream flowing below. As a result, the aerodynamic noise from the trailing edge of the blade is reduced significantly. The result is high performance at low rotor speed. This enables the SWT-3.3-130LN to reach a maximum rating of 3.3 megawatts (MW) with a noise emission reduced by nearly two decibels compared to the SWT-3.3-130 launched in 2014.

The SWT-3.3-130LN wind turbine represents a combination of proven Siemens direct drive technology and cutting edge aerodynamics. Even at an average wind speed of 6.5 meters per second, it harvests an Annual Energy Production (AEP) of around 11 gigawatt-hours. At 8.5 meters per second, the AEP actually reaches 16 gigawatt-hours.

“With our SWT-3.3-130LN wind turbine, our customers bank on reliable technology and add the advantage of a significant effect in noise mitigation,” says Thomas Richterich, CEO Onshore der Siemens Wind Power and Renewables Division. “The new model closes a gap in our portfolio: Wherever an IEC IIA class turbine is needed but noise protection requirements set limits, this wind turbine is the definite first choice.”

Siemens benchmark for noise restricted sites
The new low noise turbine SWT-3.3-130LN can be operated at a noise level reduced by nearly 2 decibels compared to its predecessor.

For further information on Siemens’ presented innovations at WindEnergy Hamburg, please see: http://www.siemens.com/press/WindEnergy2016
For further information on Wind Power and Renewables Division, please see: www.siemens.com/wind
For further information on WindEnergy Hamburg trade show, please see: www.siemens.com/weh

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Siemens AG (Berlin and Munich) is a global technology powerhouse that has stood for engineering excellence, innovation, quality, reliability and internationality for more than 165 years. The company is active in more than 200 countries, focusing on the areas of electrification, automation and digitalization. One of the world’s largest producers of energy-efficient, resource-saving technologies, Siemens is No. 1 in offshore wind turbine construction, a leading supplier of gas and steam turbines for power generation, a major provider of power transmission solutions and a pioneer in infrastructure solutions as well as automation, drive and software solutions for industry. The company is also a leading provider of medical imaging equipment – such as computed tomography and magnetic resonance imaging systems – and a leader in laboratory diagnostics as well as clinical IT. In fiscal 2015, which ended on September 30, 2015, Siemens generated revenue of €75.6 billion and net income of €7.4 billion. At the end of September 2015, the company had around 348,000 employees worldwide. Further information is available on the Internet at www.siemens.com.
 

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