Type Certificate

Siemens new flagship 7 MW offshore wind turbine

Thorough certification process confirms full compliance with IEC-61400-22 standard, assuring the safety and reliability of pioneering new offshore turbine.

The increasing demand for offshore turbines to deliver ever higher power output to reduce the levelised cost of energy, timelines to develop optimised types become increasingly tight. To meet industry and customer expectations, it was crucial for Siemens Wind Power that the newly developed SWT-7.0-154 is IEC Type Certified and reached the market on time.

The project
Type Certification of Siemens new 7 megawatt (MW) offshore wind turbine SWT-7.0-154, confirming full IEC-61400-22 compliance and ahead of schedule. The new award-winning Siemens model delivers nearly ten per cent more energy production than its predecessor under offshore wind conditions, while retaining the same proven reliability. The new 7 MW offshore wind turbine has been developed by Siemens as an evolution of the company’s flagship offshore wind turbine, the SWT-6.0-154, which has already set new industry standards in terms of gearless turbine design. DNV provided the Type Certification ahead of schedule, giving Siemens Wind Power a strong basis for the further development of the Large Direct Drive Turbines.

To confirm ultimate operational safety and reliability of the most innovative wind turbine on the market today it is crucial to have expert understanding of the turbine’s advanced technical specifications. Building on experiences from the previous certification process of the 6 MW offshore wind turbine SWT-6.0-154 and the recent SWT-7.0-154 prototype certification both sides have continued to work closely together on this project.

In May 2015, DNV has awarded Siemens Wind Power with offshore prototype certification for its new 7 MW offshore wind turbine SWT-7.0-154 which undergoes field testing in Østerild, Denmark.

Siemens Wind Power
Vicente Garcia, Portfolio Manager Offshore Certification: “At Siemens Wind Power we felt it was critical to rely on our long-lasting partnership with DNV as certification body in this upgrade of our D7 platform, as we were confident in their ability to help us reduce the final time to market. What’s more, the extensive collaboration during the initial scoping phase was a key factor for the final outcome of delivering the project to a successful result by obtaining Type Certificate ahead of schedule and provides a strong basis for the further development of the Large Direct Drive Turbines. I want to express my special thanks to both Project Managers and teams at DNV and Siemens Wind Power for their level of commitment and hard work.”

DNV
Steffen Haupt, Renewables Certification: “Conscious of the current state of the industry it was vital we deliver this project on schedule. We understand our customers’ time pressures and the demand to continuously bring the latest turbine innovations to the market. This is why optimised project management combined with in-depth technical expertise was vital for our work with Siemens, allowing the company to confidently demonstrate the safety and reliability of their ground-breaking new 7 MW turbine.”

Moving forward, DNV has also been contracted to work with Siemens on the upgrade of the 7 MW including the powerboost feature to increase the power output.