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New higher-yield Siemens wind turbine to be available early 2017

5th November 2014

By: Leandi Kolver

Creamer Media Deputy Editor

  

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Electronics and electrical engineering company Siemens launched its new model SWT-3.3-130 wind turbine at the 2014 WINDaba, held in Cape Town this week, stating that the first of these units would be available in early 2017.

This wind power unit, of which the rotor would measure 130 m in diameter, would extract the maximum energy yield from low to moderate wind velocities to deliver 3.3 MW of power.

As a result of its reworked technology and its 130 m rotor, this unit exceeded the yearly energy yield of the previous Siemens D3-series wind turbines by about 17% to 20%, Siemens said.

“WINDaba is indeed a good platform for us to launch our new product for our African market. Siemens highly values the relationship with the continent and we are committed to a diversified product portfolio to meet different customer needs in our market,” Siemens Southern and Eastern Africa wind and renewables power VP Tom Pedersen said.

Siemens had injected more than five years of pertinent experience gained from its D3 platform into the new SWT-3.3-130 turbine, which enabled engineers to further improve the unit’s core components.

In the new turbine, the direct-drive permanent-magnet generator (PMG) would operate with even stronger permanent magnets to enhance output and the designs of the nacelle bedplate yaw drive and other components important to unit statics had been strengthened to accommodate the new 130-m-diameter rotor.

The SWT-3.3-130 also used B63 blades measuring 63 m in length. These aero-elastically tailored blades would limit the static loading of the nacelle and tower, particularly under turbulent wind conditions, as the blade ends would act to cushion and absorb high wind pressure and gusts, Siemens explained.

Additional innovations featured in the new turbine included a newly designed cooling system that had now been integrated into the nacelle to ensure optimum cooling of the generator and other electrical components.

“With this wind turbine, we have, once again, maximised the performance reserves which Siemens’ D3 platform offers with its direct-drive PMG. We are confident that this new product will be embraced by our customers. This product may well set new standards for economic efficiency, energy yield and reliability,” Pedersen concluded.

Edited by Chanel de Bruyn
Creamer Media Senior Deputy Editor Online

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