ECOTECNIA 100: On-shore Multi Mega-Watt Windturbine

Juan Mª Cámara28th February 2006

Setting the new standard for on-shore application

100m - 3 MW

1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 19941995 1996 19971998 1999 2000 2001 2002 2003 2004 2005

30 kW 150 kW225 kW

640 kW

750 kW1250 kW

1670 kW

1670 kW

3000 kW

1981 2006

The sizeWind turbine development

Power density and size

74 801,5

2,0

2,5

3,0

3,5

4,0

4,5

5,0

5,5

60 70 80 90 100 110 120 130diameter (m)

Pow

er (M

W)

Offshore

Onshore

The sizeFuture evolution trends

Use oriented design

Lifecycle

Design Manufacture Installation Operation

Electrical capacitySimultaneous full range operation at nominal power

Operating temperature40 °C

Operating Voltage90 %

Reactive PowerSupply

30 %

Noise requirementsLow speed rotation to reduce noise inmission

Noise level comparison

20

23

26

29

32

35

38

41

44

47

50

53

56

59

100 600 1100 1600 2100 2600 3100

Distance

Inm

ission n

oise

(dBA

)

74 m/s tip speed 80 m/s tip speed

At low level noise, the difference in rotational speed pays a important role

100m

500m

Main figures for transport and installation

Length Weight Cross dim.

Blade 48,3 m 9,8t 3x3x50m

Tower Max. 30 m 30t Dia. 4,30

Nacelle 9,5 m 100 t4.3 x 3,9 m

(h)

Rotor 5 m 25 t 4,3 x 4,5 m

Logistics

NacelleComplete drive train, from rotor to HV

NacelleComplete drive train, from rotor to HV

NacelleApproach on logistics challenge

Supporting estructureLow weight, direct rotor support since 1983

Excellent mass - stiffness ratio: Only 9.8 tons without use of carbon fiberWind class IEC IIA : 3 m Prebend

Up to date aerodynamics; New profiles DU and experienced NACAStronger and more compact Superroot: Root diameter 2.4m, 84 x M36 Bolts

The BladeSpecific design, 48 m length, 4 m largest chord

The towerThe other side of the logistic challenge

The tower is built, without dynamic compromises, in steel up to 80 m height

with the transport requirements of diameter smaller than 4.3 m.

Hybrid towers are designed taller hub height

Power 3,000 kWRotor Three bladed, 100 m diameter Class II A with upwindRotor speed 7.5 r.p.m. -14.25 at nominal powerOperation From 3 m/s to 25 m/s 10 min. Avg.

Gearbox Type Planetary, parallel shaftsWeight 35 tGenerator Type 4 pole Induction with wound rotorTransformer Included up to 30 kV

General characteristics

Nacelle

Turbine

Bottom diameter 5 mTop diameter 2.7 mHeight 90 m to 110 m

Power control Vectorial control generator-inverterSpeed control Pitch controlMain brake Independent pitch controlAuxiliary brake Independent emergency systemYaw Active, with mechanical brakeVoltage deep Capacity to maintain operation

during voltage deep

General characteristics

Tower

Control

Thank you