Development of two-bladed offshore wind turbine - Condor wind ...

ated speed is 700 rpm. “For the generator
and converter development we cooperate
closely with Ansaldo of Italy, which is a
specialist technology developer and supplier
of both key electrical—power electronic
components. The combination with
a state-of-the-art, full power, electronic
converter ensures smooth grid connection
and disconnection and also offers excellent
grid quality behavior,” says Caruso.
All non-integrated main drive system
components are attached to a stiffly-welded,
fabricated steel bedplate or main chassis
that comes in a single piece.
Saftey
Regarding operational safety, the Condor
5 will be equipped with two indepen-
Condor 5 main specifications
Rated power 5 MW
Rotor diameter 120 m
Rotor rated speed 20.2 rpm
No. of blades 2
Cut-in wind speed 3.4 m/s
Cut-out wind speed 25 m/s
Rated wind speed 12 m/s
Survival wind speed 70 m/s
(IEC 61400 Class I)
Top head mass 259 tonnes, nacelle
+ rotor (target 239T)
Source: Condor Wind Energy, 4-2011
dent braking systems, a “soft” mechanical
brake, located on the low speed main
shaft near the rear main bearing and the
active yaw-control. In case of yaw failure,
for instance in a slewing bearing, the turbine
can still be brought to a full stop with
the mechanical brake.
The Condor 5 prototype is planned to
be operating in 2013 and should be fully
certified by Germanischer Lloyd in 2015.
Jakubowski believes that a combination 5
MW size and Condor two-bladed technology
is well suited for future large-scale series
production. He is also convinced that
the Condor 5 will offer a cost-effective, optimized
solution for many of the world’s
future offshore wind projects.
The prototype is partly financed by the
GEOMA project, which in turn is funded
by the Italian Ministry for Economic Development.
4 WindStats Report • Spring 2011 • Vol. 24, No. 2