More energy, less noise: Siemens launches three new models of wind turbines

29.09.2016

Next year Siemens will start producing three new models of onshore wind turbines. They will maximize the output at low and medium wind speed, and reduce noise. The announcement was made this week at WindEnergy 2016, the trade show in Hamburg.

Compared to previous versions, Siemens has improved the aerodynamics so that energy generation is optimised in areas with moderate winds and in noise-sensitive sites. All three turbines share the same nacelle design.

With rotor-blades based on hybrid-carbon technology by LM Wind Power, the new SWT-3.15-142 will be able to harvest 10 gigawatt hours (GWh) of energy per year even at wind speeds of only six meters per second.

The next version of the category, the new SWT-3.6-130, will ensure an annual energy output of 17 GWh at 8.5 meters per second, an improvement of 6 % compared to the predecessor.

The SWT-3.3-130LN is the low noise version of the SWT-3.3-130, which operates with reduced rotor speed and improved aerodynamics. The noise of a wind turbine in activity is primarily caused by the fast air stream passing the tips of the rotor. To reduce it, vortex generators are placed on the blade surface and trailing edges are equipped with a combination of serrations and combs so that combed teeth elements create fine vortices where the fast air stream from above meets the slower air stream below. As a result, the noise level is reduced by nearly 2 decibels compared to the previous version, reaching 104.9 decibels at a wind speed of six meters per second. This turbine can harvest around 11 GWh annually at an average wind speed of 6.5 meters per second and 16 GWh at 8.5.

“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,” said Thomas Richterich, CEO Onshore of the Siemens Wind Power and Renewables Division.

All new models benefit from a short time-to-market. The new low noise turbine and the medium wind speed turbine will go into serial production early in 2017, the low wind speed turbine later in the year.

Claudia Delpero

Similar Entries

GE Renewable Energy’s new 4.8–158 onshore wind turbine (Graphic: GE)

GE Renewable Energy has unveiled the new 4.8–158 onshore wind turbine. According to the company, it is GE's largest high efficiency turbine to date. Featuring the largest rotor in the segment and innovative blade design, the 4.8-158 is designed to offer a significant improvement in Annual Energy Production (AEP) at low to medium wind speed sites.

Siemens Gamesa Renewable Energy has signed two orders in the U.S. for the supply of 95 of its G132-3.465 MW wind turbines totaling 330 MW. Once both wind farms are completed, they can produce enough energy to power over 100,000 average U.S. homes.

With the ‘Tolo 1’ onshore wind project, Siemens Gamesa has secured its first order in Indonesia for the gearless SWT-3.6-130 wind turbines. The wind power plant developed by Equis Energy, the largest renewable energy IPP (independent power producer) in the Asia-Pacific region, will be installed by late 2017. Commissioning is planned for early 2018.

The global wind turbine rotor blade market is expected to surpass US$ 7 Bn in revenues by 2017-end. The market is anticipated to grow at a CAGR of 21.2% during the period 2017-2025 and reach nearly US$ 33 Bn in revenues. According to Persistence Market Research (PMR), global wind energy installations have increased from 282.2 GW in 2012 to 486.7 GW in 2016. This is positively impacting the growth of the global wind turbine rotor blade market.