Download WindpowerUpdate 15 - Nordex

N90/2300 kW
Nordex Extending Range
of Megawatt Turbines
The bottom tower
section is mounted ...
4
The N90/2300 kW has been installed near Anklam in Germany. With a rotor sweep of
6,362 square metres the optimum yield has been assured.
Nordex AG has assembled the newly developed
N90/2300 kW wind turbine near Anklam in the
German state of Mecklenburg-West Pomerania for
its customer Enertrag AG, Nechlin. With a rotor diametre
of 90 metres and an output of 2.3 MW, the N90
is one of the world’s largest series-produced wind
turbines.
Compared with the base N80 model, the N90’s
rotor diametre is 10 metres larger. This translates
into a 27 % increase in rotor sweep to 6,362 square
metres, roughly the area of a football field. “This
sweep plays a key role in energy yield, which is why
the N90 promises far greater efficiency than existing
turbines in locations characterized by weak to medium
wind speeds,” explains Dietmar Kestner, CEO
at Nordex AG.
Nordex will also be offering the N90 on towers
with a height of between 80 and 105 metres to harness
wind power potential in non-coastal locations.
This is important because wind speeds and hence
also the energy yield increase significantly with rising
altitude in non-coastal regions in particular. The 80
and 100 metre versions of the N90 are certified for
average wind speeds of 8.0 m/s and the 105 metre
model for wind speeds of up to 7.5 m/s. Accordingly,
the core market for the N90 will be Central Europe.
Says Kestner: “We are currently registering strong
WINDPOWERUPDATE ı Technology
demand in Germany in particular. Preliminary contracts
have already been signed.”
The turbine is based on the proven mechanical
concept used in the N80/2500 kW, which has been in
production for the past two-and-a-half years. Accordingly,
Nordex assumes that a testing period of only
around six months will be necessary, during which
time Nordex will be measuring the performance
curve, noise emission, grid compatibility and mechanical
load. The turbine has already been certified pursuant
to the Germanischer Lloyd guidelines and IEC.
... and followed by the top tower section.