TÜV boost for Winergy HybridDrive

German independent testing organisation TÜV Rheinland has given its stamp of approval to compatriot Winergy’s HybridDrive gearbox-and-generator concept.

The GL2010 certification clears the way for the transmission system – a compact two-speed gear and permanent-magnet generator assembly – for first installation in W2E Wind’s new 3MW W2E-120/3fc wind turbine.

"We are very satisfied that the HybridDrive system was able to be so quickly certified,” says Winergy project manager Matthias Deicke.

“As a consequence, we can offer [a design that] has been checked and verified regarding basic production criteria and specification features even before a turbine is engineered. This saves our customers a substantial amount of money in the complete type certification process.”

The 34-tonne HybridDrive – which tested at a rated efficiency of over 96%, with the gearbox and generator achieving individual efficiencies of some 98% – can handle torque of some 2,550 kilonewton metres.

Designed for turbines with a rotor diameter of 120 metres, other sizes and power ratings of the HybridDrive are on the drawing board.

The first 3MW wind turbines under license from W2E are expected to be outfitted with HybridDrives “in the coming months”.

Siemens-owned Winergy has a drive-train portfolio ranging over power ratings from 750kW to 6.5MW.