7-MW turbine from Siemens gets type certificate

Friday, 19 February, 2016 - 10:30
Siemens has built up a second prototype of its SWT-7.0-154 in Østerild, Denmark. (Photo: Siemens)
Siemens has built up a second prototype of its SWT-7.0-154 in Østerild, Denmark. (Photo: Siemens)

Siemens has received the type certificate for its SWT-7.0-154 and has installed a second prototype at the test field in Østerild, Denmark. Serial production of the direct drive turbine is scheduled to begin in autumn 2017.

The development of Siemens’ offshore flagship wind turbine has reached its final stage: the 7 MW turbine has successfully passed final type certification. Furthermore, Siemens has recently extended the field testing with the installation of a second prototype in Østerild, Denmark. Serial production of the direct drive turbine is scheduled to begin in autumn 2017.

While the first prototype, installed in summer 2015, was initially used for achieving the final type certificate, engineers are now able to use both prototypes for accelerated testing of all grid-related aspects such as performance, quality and safety.

Many of the technological components in the SWT-7.0-154 are the same as in the SWT-6.0-154, including the 154 m rotor. New are mainly the permanent magnet generator, the power converter and the medium voltage transformer. Whereas the generator’s permanent magnets and segments as well as the transformer upgrades are required solely for the higher output, the upgraded Siemens Integrated Control System (SICS) with enhanced power converter should provide more flexibility in the turbine response to voltage and frequency.

“The development of our SWT-7.0-154 has reached the final stage and we are well on track,” says Morten Rasmussen, Head of Technology at Siemens Wind Power and Renewables Division. First orders are already in place, including the Walney Extension East offshore project in the UK to be installed in early 2018.

Katharina Garus / Siemens

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