Turbines of the year: Onshore Turbines up to 2.9MW

WORLDWIDE: By far the largest and most competitive sector of the global wind power market, contested by nearly all leading manufacturers

Vestas V110-2.0MW… Evolutionary development aimed at low-wind sites
Vestas V110-2.0MW… Evolutionary development aimed at low-wind sites


GOLD Vestas V110-2.0MW

The V110-2.0MW — announced in 2013 and brought to market in 2014 — is the latest model in Vestas' 2MW platform. This largely evolutionary variant aimed at low-wind sites has quickly become a highly competitive and successful product.

The platform dates back to 2000, when Vestas introduced the V80-2.0MW, which also marked a switch from semi-variable speed (OptiSlip) to variable-speed operation. This doubly-fed induction generator(DFIG)-based variable-speed operating technology was simultaneously introduced to the V52-850kW and V66-1.75MW models.

The V80 was itself an evolution of the semi-variable V66-1.65MW, and the original V63-1.5MW, built as a prototype only in 1996, but which was part of an ambitious EU development project involving four "next-generation" 1.5MW-class turbines.

The V80-2.0MW series suffered from serious technical issues in its early years. However, once these problems were resolved, the series grew into a mature, competitive and expanding product platform. There are now nearly 12,000 units in operation worldwide.

Technically, the 2MW Vestas models feature the Danish company's well-tried non-integrated high-speed drivetrain layout. Characteristics of this drive-system solution are a main shaft supported in two main bearing and attached to a three-stage gearbox, and a separate intermediate shaft to the discretely mounted generator.

SILVER GE 2.0-116

GE's new low-wind turbine introduced and available from 2015 offers a competitively low specific power rating of 189W/m2, and it is now the biggest-seller in the company's 2-2.4MW platform range.

The platform offers a wide and flexible choice in power rating and rotor diameter combinations. The pitch-controlled variable-speed 2.0-116 - and intermediate variants - feature a high-speed drivetrain with a three-stage gearbox and DFIG.

Remarkably, the essential design principles of this turbine are still based to a large degree on the 1.5MW Tacke turbine of 1996.

BRONZE Nordex N117/2400

This 2.4MW turbine set a new benchmark for low-wind conditions when it was introduced in 2011, with a commercial ramp-up the following year. Generally believed to be two years ahead of the competition on its launch, it remains the German company's best-selling model.

In technological terms, the N117/2400 builds upon the proven 2.5MW Gamma platform introduced in 2000 with the pitch-controlled variable-speed N80/2500 Alpha series. Rated power of 2.4MW and the 117-metre rotor together offer a specific power rating of 223W/m2. A particularly innovative feature is the slender, lightweight blade, incorporating carbon, and developed in-house. The NR58.5 blade weighs less than 11 tonnes.

Have you registered with us yet?

Register now to enjoy more articles
and free email bulletins.

Sign up now
Already registered?
Sign in