Siemens’ SWT-3.6-130 onshore wind turbine has been type-certified by DNV GL. According to the companies, the certification confirms that the new turbine complies with all the requirements of international wind turbine standard IEC 61400-22 for conformity testing and certification.
The SWT-3.6-130 is the second generation of wind turbine from Siemens’ onshore direct-drive platform. Compared to older models, the turbine features larger blades and has a rotor diameter of 130 meters. The turbine – available in various hub heights – is designed to maximize yields in low to medium wind speeds.
According to Siemens, the SWT-3.6-130 will deliver 18%-19% higher annual energy production across wind speeds than that of the previous model, the SWT-3.2-113.
“Type certification of wind turbines is vital for securing financing of new wind farm projects,” noted Jonas Stenzel, head of global product and technology type certification for Siemens’ wind power division.
The certification process for the SWT-3.6-130 began with the certification of a prototype installed in Høvsøre, Denmark. The type certification included design evaluation, supported by tests and measurements, and inspections. Following the finalization of the type certification process, an official certificate was handed over to Siemens at the WindEnergy Hamburg exhibition on Sept. 28.
“We have a more than 20-year working relationship with DNV GL’s wind experts,” added Stenzel. “This experience and knowing the internal processes on both sides helps a lot to streamline the type certification procedure, allowing us to meet our given tight deadlines.”