1. Product Support Manager
Vestas Product Offer
Cataldo Pignatale
Product Support Manager
Vestas Italia S.r.l.
Desire-Net Project

2. If you have the site…

3. Session Contents
Aim: at the end of this session participants will have an overview of the wind turbine portfolio in Vestas and the way the modern technologies have been applied to them
Duration: 35-40min

4. Proven Performance Power output Operational availability Power quality
Sound level
Critical factors to turbine quality
A wind turbine is a substantial and complex investment. To clarify the purchasing and evaluation process, Vestas has identified four factors that are critical to turbine quality, and the Group holds itself to the highest standards for each one.
Power output:
The Guaranteed Power Curve backs up Vestas turbines’ ability to deliver their rated power.
Operational availability:
Vestas turbines are characterised by an impressive availability factor, saving customers from potentially costly downtime while the wind is blowing.
Power quality:
Wind turbines are now being required to supply power with minimal flicker and harmonic distortion. Special Vestas innovations make grid connection seamless, and ensures that power regulation runs smoothly.
Vestas grid support technology provides a wide range of features improving the power quality.
The use of OptiSpeed® (variable speed) and OptiTip® (pitch regulation) ensures optimal power quality
Sound level:
For sites where sound is an issue, Vestas has engineered blades, gearboxes and generators to be as quiet as possible – a natural extension of the environmental commitment Vestas is built upon.
It is possible to lower sound levels at night by means of output reduction (controller settings) or for V82: by switching to small generator operation. OptiSpeed® can also lower sound levels while the turbine is operating.
Each of Vestas’ wind turbines is exhaustively tested for the above parameters. The results are independently verified by third party experts. Vestas provides extensive documentation to make it easier for customers to gain the support of investors, regulators and financial institutions.

5. Development of Vestas turbines
The annual production is based on the following conditions:
A wind speed measurement at a height of 40 metres
An average wind speed of 7 m/s
c = 2.0
Air-mass density = kg/m3
Wind shear 0.15
Maximum noise level
Tower heights (hub height): 
V44: 40m 
V47: 45m
V52: 50m
V66: 67m
V82: 80 m
V80: 78m
V90-1.8/2.0 MW*: 80 m
V MW: 80 m
V MW: 80 m
V120: 90 m
*For IEC III turbines, the nominal output is 2 MW (V90). The annual production is calculated at a max. mean wind speed of 7.5 m/s at hub height.
V100 prototypes will be installed in a number of markets during Vestas expects to commence serial production in 2007.
The development of Vestas’ product range has moved in the direction of larger turbines. The first turbines that entered the market in 1981 had a rotor diameter of 15 metres, a 22 metre tower and a 55 kW effect. Today, Vestas’ largest turbine - the V120 - has a rotor diameter of 120 m and the nominal output is 4.5 MW. That means that it takes 74 units of V15 turbines to produce the same amount of energy as is produced by one V120 turbine.

6. Wind turbine range AgendakW
1.5 MW
2.0 MW
3.0 MW
Click on the arrows to jump to the various MW-class sections in the presentation.

7. kW class
V kW in Norway
V kW

8. V52-850 kW The turbine that goes anywhere
Allround turbine
Ideal for populated as well as remote areas
Easy to transport
Well-proven technology
Advanced pitch technology
Outstanding track record
Broad range of tower heights
Optimised for medium and high winds
V kW in Ireland
V52 profile
The highly reliable V52–850 kW wind turbine is Vestas’ offer in the kilowatt class. This all-round turbine is ideal for populated and remote areas alike, with compact dimensions that make it easy to transport overland. The V52 uses pitch technology to optimise the output under medium to high wind conditions. The V52 is available in a wide range of tower heights.
Commissioned V52 turbines, total (30 June 2006): 1,816
Installed MW, total (30 June 2006): 1544MW
V kw
Efficient allround turbine:
Ideal for all wind conditions. Speed of revolution of the rotor can vary from 14.0 to 31.4 rpm. This allows for optimal energy capture at both high and medium wind speeds while ensuring best possible power quality. Improved exploitation of winds in complex wind sites with high energy production potential.
Designed to work with the weak grid conditions often found in remote locations.
OptiSpeed ®:
OptiSpeed® optimises energy production, making it easy to adapt turbine operation to grid parameters.
Enables rotor to operate at variable speed (rpm) and hereby optimises aerodynamic efficiency of the rotor. OptiSpeed® allows the rotor speed to vary within a range of approximately 60 per cent in relation to nominal rpm. Thus with OptiSpeed®, the rotor speed can vary by as much as 30 per cent above and below synchronous speed. This minimises both unwanted fluctuations in the output to the grid supply and the loads on the vital parts of the construction. 
OptiSpeed® ensures that converter only converts generator rotor energy (accounts only for small part of entire energy production). The use of a converter eliminates the need to consume reactive power from electrical grid.
Note: OptiSpeed® is NOT available in the USA and Canada!
OptiTip®:
Microprocessor-controlled OptiTip® pitch regulation ensures continuous and optimal adjustment of the angle of the blades in relation to prevailing wind.
OptiTip® and OptiSpeed® systems: Allows optimisation of solution to requirements for high output and low sound levels, depending on the location. The systems reduce disadvantages of high and unstable winds, and with low winds, V kW will still achieve optimal output.
Lower sound levels:
Low speed of revolution in low to medium wind speeds is important step towards fulfilling requirements for wind power solution with low sound level. Turbine operation can be tailormade for specific characteristics of the location because OptiSpeed® allows programming of turbine sound levels before installation.

9. V52-850 kW Technical specifications
Nominal output: 850 kW
Rotor diameter: 52 m
Area swept: 2,124 m2
Nominal revolutions: 26 rpm ( )
Power regulation: Pitch/OptiSpeed®
Air brake: full blade pitch
Generator: asynchronous with OptiSpeed®
Nominal wind speed: 16 m/s
Tower (hub heights), app.: 36.5 m, 40 m, 44 m, 49 m,
55 m, 60 m, 65 m, 70 m, 74 m, 86 m
Control:
Microprocessor-based
OptiSpeed® output regulation
OptiTip® pitch regulation
OptiSpeed ®:
OptiSpeed® optimises energy production, making it easy to adapt turbine operation to grid parameters.
Enables rotor to operate at variable speed (rpm) and hereby optimises aerodynamic efficiency of the rotor.
OptiSpeed® allows the rotor speed to vary within a range of approximately 60 per cent in relation to nominal rpm. Thus with OptiSpeed®, the rotor speed can vary by as much as 30 per cent above and below synchronous speed. This minimises both unwanted fluctuations in the output to the grid supply and the loads on the vital parts of the construction. 
OptiSpeed® ensures that converter only converts generator rotor energy (accounts only for small part of entire energy production). The use of a converter eliminates the need to consume reactive power from electrical grid.
Note: OptiSpeed® is NOT available in the USA and Canada!
OptiTip® :
Microprocessor-controlled OptiTip® pitch regulation ensures continuous and optimal adjustment of the angle of the blades in relation to prevailing wind.
OptiTip® and OptiSpeed® systems: Allows optimisation of solution to requirements for high output and low sound levels, depending on the location. The systems reduce disadvantages of high and unstable winds, and with low winds, V kW will still achieve optimal output.
Control:
Microprocessor-based monitoring of all turbine functions as well as OptiSpeed® output regulation and OptiTip® pitch regulation of the blades.

10. V52-850 kW Nacelle layout Oil & water coolers Anemometer Hub
Pitch cilinder
Blade bearing
Blade
Main bearing
Hydraulic power unit
G. Cooling air outlet
Main shaft
Gearbox
High speed shaft
Slip rings
Generator
Yaw gear

11. V kW Power curves
V kW power curves values (kW) – wind speed (m/s):
Air density: kg/m3
104.2 dB(A)
4 m/s kW
5 m/s kW
6 m/s kW
7 m/s kW
8 m/s kW
9 m/s kW
10 m/s 554 kW
11 m/s 671 kW
12 m/s 759 kW
13 m/s 811 kW
14 m/s 836 kW
15 m/s 846 kW
16 m/s 849 kW
17 m/s 850 kW
18-25 m/s 850 kW

12. 1.5 MW class
V MW in Germany
V MW

13. V82 Creating more from less
Well-proven technology
Excellent grid compatibility
Low sound power level
Optimised for low to medium winds
V MW in Portugal
V82 profile
Vestas has made a concerted effort to design a wind turbine that exploits low winds to the maximum in the 1.5 MW class. The V82 makes wind power profitable in regions where it otherwise would not pay and distinguishes itself by excellent grid compatibility and low sound levels. This low to medium wind speed turbine is available in two power ratings, 1.5 MW and 1.65 MW to suit local market requirements
Commissioned V82 turbines, total (30 June 2006):
V MW: 203
V MW: 730
Installed MW, total (30 June 2006):
V MW: 305 MW
V MW: 1205 MW
V MW
Optimised for low to medium winds:
Equipped with large rotor and powerful generator.
Hydraulic ACTIVE-STALL® technology: Ensures that rotor harnesses maximum energy from available wind while minimising loads and controlling output. In addition, ACTIVE-STALL® provides fail-safe shut-down of turbine in all conditions.
Low sound level:
V MW available with one-speed generator and two-speed generator. Two speed generator makes it possible to reduce sound level even further to meet specific requirements – e.g. lower sound level at night time or at low wind speeds.
Grid Compatibility:
The Vestas Grid support technology ensures the V82 grid compatibility. For the V82, the solution features:
Full load and dynamic phase compensation that supports reactive power regulation to maintain power factor within specified range.
Uninterrupted power supply back-up to maintain full operation of all auxiliary systems in the wind turbine during grid disturbances.
Continuous regulation of active and reactive power as well as voltage balance in the grid.
Fault ride-through during grid disturbances.

14. V82-1.65 MW Technical specifications
Nominal output: 1.65 MW
Rotor diameter: 82 m
Area swept: 5,281 m2
Nominal revolutions: 14.4 rpm, 14.4/10.8 rpm
Power regulation: Active-Stall®
Air brake: full blade pitch
Generator: asynchronous 2 speed generator
Cut-in wind speed: 3.5 m/s, 2.5 m/s
Nominal wind speed: 13 m/s
Tower (hub heights), app.: 59 m, 68.5 m, 70 m, 78 m, 80 m
Control:
Computer control system
Output regulation and optimisation via Active-Stall®
Speed of revolution:
Rotor speed one speed version: 14.4 rpm
Rotor speed two speed version: 14.4/10.8 rpm
Generator:
V MW available with one-speed generator and two-speed generator.
Cut-in wind speed:
One speed version: 3.5 m/s
Two speed version: 2.5 m/s
Nominal wind speed:
Rated wind speed: 13 m/s
Rated wind speed according to IEC class II: 11.6 m/s
Hydraulic ACTIVE-STALL® technology: Ensures that rotor harnesses maximum energy from available wind while minimising loads and controlling output. In addition, ACTIVE-STALL provides fail-safe shut-down of turbine in all conditions.
Control:
Computer control of all the turbine functions with the option of remote monitoring. Output regulation and optimisation via ACTIVE-STALL®
IGC® :
The V82 is equiped with a proprietary internal grid connerction technology, IGC® placed in the tower bottum of the wind turbine. The optional solution comprises;
MV switchgear with fuses
A three-phase dry type transformer
IP 21 enclosure
steel structure.
Surge arrestors
MV cable set
LV cable set
Earthing system materials (W4)
Component manuals, drawings and installation instructions.

15. V82-1.65 MW Nacelle layout Anemo- meter and wind vanes Cooler Gearbox
Main shaft
Main bearing
Hub with spinner
Generator
Brake
Coupling
Yaw system

16. V MW Power curves
V MW power curves values (kW) – wind speed (m/s):
Air density: kg/m3
V MW:
2 m/s 0 kW
3 m/s 20 kW
4 m/s 69 kW
5 m/s kW
6 m/s kW
7 m/s kW
8 m/s kW
9 m/s kW
10 m/s kW
11 m/s kW
12 m/s kW
13-20 m/s kW
> 20 m/s 0 kW
V /900 kW MW:
7 m/s kW
8 m/s kW
9 m/s kW
10 m/s 824 kW
11 m/s 884 kW
12 m/s 902 kW
13 m/s 906 kW
14 m/s 904 kW
15 m/s 897 kW
16 m/s 888 kW

17. 2.0 MW class V80-2.0 MW V90-2.0 MW V80-1.8 MW V90-1.8 MW
V MW in Germany
V MW
V MW
V MW
V MW

18. 2.0 MW class Nacelle layout
Main shaft
Blade
Oil & water coolers
Blade bearing
Anemometer
Hub
Slip rings
Trafo
Generator
High speed shaft
Yaw gear
Gearbox
Pitch cilinder
Main bearing
Hydraulic power unit

19. V80 Versatile megawattage
V MW in Wyoming, USA
Cornerstone of the 2 MW class
Mainstream turbine
Optimised for medium and high winds
Pitch regulation
Many different tower heights
V MW and V MW
V80 profile
The cornerstone of our 2 MW class is the well-proven V MW wind turbine which is the closest we come to a mainstream turbine for medium and highwind sites. This competitive pitch regulated model with OptiSpeed® is available in many different tower heights, from metres. The V80 is also available in a 1.8 MW OptiSlip® version for the US market.
Commissioned V80 turbines, total (30 June 2006):
V MW: 1,578
V MW: 625
Installed MW, total (30 June 2006):
V MW: 3,156
V MW: 1125
V MW
Ideal for medium and high winds:
Speed of revolution of the rotor varies between 9 and 19 rpm. Makes V MW ideal for installation in areas with medium to high wind speeds.
OptiSpeed ®:
OptiSpeed® optimises energy production, making it easy to adapt turbine operation to grid parameters.
Enables rotor to operate at variable speed (rpm) and hereby optimises aerodynamic efficiency of the rotor.
OptiSpeed® allows the rotor speed to vary within a range of approximately 60 per cent in relation to nominal rpm. Thus with OptiSpeed®, the rotor speed can vary by as much as 30 per cent above and below synchronous speed. This minimises both unwanted fluctuations in the output to the grid supply and the loads on the vital parts of the construction. 
OptiSpeed® ensures that converter only converts generator rotor energy (accounts only for small part of entire energy production). The use of a converter eliminates the need to consume reactive power from electrical grid.
Note: OptiSpeed® is not available in the USA and Canada.
Lower sound levels:
Low speed of revolution in low to medium wind speeds is important step towards fulfilling requirements for wind power solution with low sound level. Turbine operation can be tailormade for specific characteristics of the location because OptiSpeed® allows programming of turbine sound levels before installation.
OptiTip®:
Microprocessor-controlled pitch regulation ensures continuous and optimal adjustment of the angels of the blades in relation to prevailing wind.
OptiTip® and OptiSpeed® systems: Allows optimisation of solution to requirements for high output and low sound levels, depending on the location
On V MW, the pitch mechanism is fitted in the blade hub itself, and contains a separate hydraulic pitch cylinder for each blade. This ensures triple braking safety because one feathered blade is sufficient to stop the turbine.
V MW (Note: Designed especially for North America):
The V MW is designed especially for North America and is optimised to meet North American market requirements.
Two different models available: Model 1: Higher rotor speed and higher production level. Certified for IEC class 1A wind conditions. Model 2: Lower rotor speed and lower sound level. Certified for IEC class 2A wind conditions.
V MW is optimised for a 60 Hz grid and is in the process of being UL compliant.
Towers designed for wind conditions typical for North America (up to 78 m).
OptiSlip®:
OptiSlip® optimises energy production: A generator feature that allows rotor and generator to vary their speed by up to 10% during wind gusts. This maximises power quality and reduces strains on turbine components.
V MW is particularly well suited for low to medium winds, but OptiSlip® allows the turbine to adapt to wind conditions in almost any location.
Microprocessor-controlled pitch regulating system, which is fitted into the hub and uses a separate hydraulic pitch cylinder for each blade.
Blades are constantly regulated and pitched at the optimal angle for current wind conditions. Individual pitch regulation for each blade reduces strain on rotating system because mechanical braking can be avoided.
Sound levels:
V MW ideal for populated inland areas, especially when wind speeds are low: Available in two different models with a 2.5 dB difference in sound levels. Note that a reduction of 3 dB (A) is considered to be a 50% reduction of the sound level!
This means that two V MW turbines with low sound levels can be placed at nearly the same distance to a sound sensitive location as one turbine with a higher sound level.

20. V80-1.8 MW Technical specifications
Nominal output: 1.8 MW
Rotor diameter: 80 m
Area swept: 5,027 m2
Nominal revolutions: 15.5/16.8 rpm
Power regulation: Pitch/OptiSlip®
Air brake: 3 separate pitch settings
Generator: asynchronous with OptiSlip®
Cut-in wind speed: 4 m/s
Nominal wind speed: 16 m/s
Tower (hub heights), app.: 60 m, 67 m, 78 m
Control:
Microprocessor-based
OptiSlip® output regulation
OptiTip® pitch regulation
OptiSlip®:
OptiSlip® optimises energy production: A generator feature that allows rotor and generator to vary their speed by up to 10% during wind gusts. This maximises power quality and reduces strains on turbine components.
V MW is particularly well suited for low to medium winds, but OptiSlip® allows the turbine to adapt to wind conditions in almost any location.
OptiTip®:
Microprocessor-controlled pitch regulating system, which is fitted into the hub and uses a separate hydraulic pitch cylinder for each blade.
Blades are constantly regulated and pitched at the optimal angle for current wind conditions. Individual pitch regulation for each blade reduces strain on rotating system because mechanical braking can be avoided.
Control:
Microprocessor-based control of all turbine functions with the option of remote monitoring. OptiSlip® output regulation and OptiTip® pitch regulation of the blades

21. V MW Power curves
V MW 60 Hz power curves values (kW) – wind speed (m/s):
Air density: kg/m3
EIC class I:
4 m/s 3 kW
5 m/s 99 kW
6 m/s kW
7 m/s kW
8 m/s kW
9 m/s kW
10 m/s kW
11 m/s kW
12 m/s kW
13 m/s kW
14-23 m/s kW
24 m/s kW
25 m/s kW
EIC class II:
4 m/s 7 kW
5 m/s kW
6 m/s kW
7 m/s kW
8 m/s kW
9 m/s kW
10 m/s kW
11 m/s kW
12 m/s kW
13 m/s kW
14 m/s kW
15-25 m/s kW

22. V80-2.0 MW Technical specifications
Nominal output: 2.0 MW
Rotor diameter: 80 m
Area swept: 5,027 m2
Nominal revolutions: 16.7 rpm
Power regulation: Pitch/OptiSpeed®
Air brake: 3 separate pitch cylinders
Generator: asynchronous with OptiSpeed®
Cut-in wind speed: 4 m/s
Nominal wind speed: 15 m/s
Tower (hub heights), app.: 60 m, 67 m, 78 m, 100 m
Control:
Microprocessor-based
OptiSpeed® output regulation and optimisation
OptiTip® pitch regulation
OptiSpeed ®:
OptiSpeed® optimises energy production, making it easy to adapt turbine operation to grid parameters.
Enables rotor to operate at variable speed (rpm) and hereby optimises aerodynamic efficiency of the rotor.
OptiSpeed® allows the rotor speed to vary within a range of approximately 60 per cent in relation to nominal rpm. Thus with OptiSpeed®, the rotor speed can vary by as much as 30 per cent above and below synchronous speed. This minimises both unwanted fluctuations in the output to the grid supply and the loads on the vital parts of the construction. 
OptiSpeed® ensures that converter only converts generator rotor energy (accounts only for small part of entire energy production). The use of a converter eliminates the need to consume reactive power from electrical grid.
Note: OptiSpeed® is not available in the USA and Canada.
OptiTip®:
Microprocessor-controlled pitch regulation ensures continuous and optimal adjustment of the angels of the blades in relation to prevailing wind.
OptiTip® and OptiSpeed® systems: Allows optimisation of solution to requirements for high output and low sound levels, depending on the location
On V MW, the pitch mechanism is fitted in the blade hub itself, and contains a separate hydraulic pitch cylinder for each blade. This ensures triple braking safety because one feathered blade is sufficient to stop the turbine.
Control:
Microprocessor-based control of all the turbine functions with the option of remote monitoring. Output regulation and optimisation via OptiSpeed® and OptiTip® pitch regulation.

23. V MW Power curves
V MW power curves values (kW) – wind speed (m/s):
Air density: kg/m3
Onshore, dB(A):
4 m/s kW
5 m/s kW
6 m/s kW
7 m/s kW
8 m/s kW
9 m/s kW
10 m/s kW
11 m/s kW
12 m/s kW
13 m/s kW
14 m/s kW
15 m/s kW
16 m/s kW
17 m/s kW
18 m/s kW
19-25 m/s kW
Offshore:
4 m/s kW
5 m/s kW
6 m/s kW
7 m/s kW
8 m/s kW
9 m/s kW
10 m/s kW
11 m/s kW
12 m/s kW
13 m/s kW
14 m/s kW
15 m/s kW
18-25 m/s kW

24. V90 High output in low to medium winds
V80 proven technology
Blade innovations of V90 in 3 MW class
Optimised for low to medium winds
V MW and
V MW
V90 profile
For less windy sites the V MW and V MW provide high output. The design is based on the proven technology of the V80 and the revolutionary blade innovations of the V MW. Both versions are equipped with OptiSpeed® technology enabling the turbine to optimise energy production.
Commissioned V90 turbines, total (30 June 2006):
V MW: 382
Installed MW, total (30 June 2006):
V MW: 762 MW
V MW and V MW
High output in low to medium winds:
V MW and V MW can generate up to 25% more energy compared to V MW, which makes them ideal for areas with low to medium wind conditions
Combination of V MW nacelle and 90-metre rotor.
Nominal output: Reduced to 1.8 MW in areas with IEC category IIA wind speeds (mean wind speeds of up to 8.5 m/s). V MW designed for IEC IIIA sites with lower average wind speed (this optimises dynamic transmission loads).
Blade innovations:
New blade design improves performance and increases output yet at the same time reduces loads on the machine.
Extremely light blades: Carbon fibre – very strong and light material - used instead of fibreglass for the load carrying structure of the blade. This has made it possible to reduce the amount of material used for the blades, thus reducing the overall weight and consequently loads.
New airfoil design improves energy production, reduces sensitivity to roughness on leading edge of the blade, and maintains good geometrical relationship between one airfoil thickness and the next.
Improved gearboxes:
Longer blades mean higher loads on mechanical turbine components. Therefore, transmission system in the nacelle has been reinforced. In addition, adjustments have been made to reinforce load-transferring bolt connections, yaw system, and gearbox. New turbines are equipped with new, stronger and more efficient gearboxes.
Strong and light tower:
Instead of welded brackets, magnets are used to fasten interior components to tower wall. This increases the fatigue strength of the tower.
For ultimate tower strength: stronger steel type used than previously.
Weight: 80 m tower for V MW and V MW weighs app. 156 tons ~ 80 m tower for V80 weighs app. 200 tons.
Vestas has reduced total tower weight by app. 44 tons, which facilitates more cost effective transport.
OptiSpeed ®:
OptiSpeed® optimises energy production, making it easy to adapt turbine operation to grid parameters.
Enables rotor to operate at variable speed (rpm) and hereby optimises aerodynamic efficiency of the rotor.
OptiSpeed® allows the rotor speed to vary within a range of approximately 60 per cent in relation to nominal rpm. Thus with OptiSpeed®, the rotor speed can vary by as much as 30 per cent above and below synchronous speed. This minimises both unwanted fluctuations in the output to the grid supply and the loads on the vital parts of the construction. 
OptiSpeed® ensures that converter only converts generator rotor energy (accounts only for small part of entire energy production). The use of a converter eliminates the need to consume reactive power from electrical grid.
Note: OptiSpeed® is NOT available in the USA and Canada!
V MW in Denmark

25. V90-1.8 MW Technical specifications
Nominal output: 1.8 MW
Rotor diameter: 90 m
Area swept: 6,362 m2
Nominal revolutions: 13.3 rpm
Power regulation: Pitch/OptiSpeed®
Air brake: 3 separate pitch cylinders
Generator: asynchronous with OptiSpeed®
Cut-in wind speed: 3.5 m/s
Nominal wind speed: 12 m/s
Tower (hub height), app.: 80 m
Control:
Microprocessor-based
OptiSpeed® output regulation and optimisation
OptiTip® pitch regulation
Nominal output:
Reduced to 1.8 MW in areas with IEC category IIA wind speeds (mean wind speeds of up to 8.5 m/s).
OptiSpeed ®:
OptiSpeed® optimises energy production, making it easy to adapt turbine operation to grid parameters.
Enables rotor to operate at variable speed (rpm) and hereby optimises aerodynamic efficiency of the rotor.
OptiSpeed® allows the rotor speed to vary within a range of approximately 60 per cent in relation to nominal rpm. Thus with OptiSpeed®, the rotor speed can vary by as much as 30 per cent above and below synchronous speed. This minimises both unwanted fluctuations in the output to the grid supply and the loads on the vital parts of the construction. 
OptiSpeed® ensures that converter only converts generator rotor energy (accounts only for small part of entire energy production). The use of a converter eliminates the need to consume reactive power from electrical grid.
Note: OptiSpeed® is NOT available in the USA and Canada!
Control:
Microprocessor-based control of all the turbine functions with the option of remote monitoring. Output regulation and optimisation via OptiSpeed® and OptiTip® pitch regulation.

26. V90-2.0 MW Technical specifications
Nominal output: 2.0 MW
Rotor diameter: 90 m
Area swept: 6,362 m2
Nominal revolutions: 13.3 rpm
Power regulation: Pitch/OptiSpeed®
Air brake: 3 separate pitch cylinders
Generator: asynchronous with OptiSpeed®
Cut-in wind speed: 3.5 m/s
Nominal wind speed: 13 m/s
Tower (hub height), app.: 80 m, 105 m
Control:
Microprocessor-based
OptiSpeed® output regulation and optimisation
OptiTip® pitch regulation
Nominal output:
V MW designed for IEC IIIA sites with lower average wind speed (this optimises dynamic transmission loads).
OptiSpeed ®:
OptiSpeed® optimises energy production, making it easy to adapt turbine operation to grid parameters.
Enables rotor to operate at variable speed (rpm) and hereby optimises aerodynamic efficiency of the rotor.
OptiSpeed® allows the rotor speed to vary within a range of approximately 60 per cent in relation to nominal rpm. Thus with OptiSpeed®, the rotor speed can vary by as much as 30 per cent above and below synchronous speed. This minimises both unwanted fluctuations in the output to the grid supply and the loads on the vital parts of the construction. 
OptiSpeed® ensures that converter only converts generator rotor energy (accounts only for small part of entire energy production). The use of a converter eliminates the need to consume reactive power from electrical grid.
Note: OptiSpeed® is NOT available in the USA and Canada!
Control:
Microprocessor-based control of all the turbine functions with the option of remote monitoring. Output regulation
and optimisation via OptiSpeed® and OptiTip® pitch regulation.

27. V90-1.8 MW and V90-2.0 MW Power curves
V MW and V MW power curves values (kW) – wind speed (m/s):
Density: kg/m3
109.4 dB(A)
V MW
4 m/s 90 kw
5 m/s 201 kw
6 m/s 366 kw
7 m/s 595 kw
8 m/s 891 kw
9 m/s kw
10 m/s kw
11 m/s kw
12 m/s kw
13 m/s kw
14 m/s kw
15 m/s kw
16 m/s kw
17 m/s kw
18 m/s kw
19 m/s kw
20 m/s kw
21 m/s kw
22 m/s kw
23 m/s kw
24 m/s kw
25 m/s kw
V MW
10 m/s kw
11 m/s kw
12 m/s kw
13 m/s kw
14 m/s kw
15 m/s kw
16 m/s kw
17 m/s kw
18 m/s kw
19 m/s kw
20 m/s kw
21 m/s kw
22 m/s kw
23 m/s kw
24 m/s -
25 m/s -

28. 3.0 MW class
V MW in Germany
V MW

29. V90-3.0 MW The efficient way to more power
Cornerstone of the 3 MW class
Low weight
Low transportation costs
Lighter and stronger tower
New nacelle design generates more power
Blade innovations
Optimised for high winds and offshore installation
V90 profile
The 3 MW class is built around the highwind V90. This turbine introduces a lighter, stronger tower and a groundbreaking nacelle design that generates more power. It also pioneers various blade innovations, including new materials and airfoil design. The V MW with variable speed technology is the most efficient high wind and offshore turbine in the Vestas range today.
Commissioned V90 turbines, total (30 June 2006): 202
Installed MW, total (30 June 2006): 606 MW
V MW
Ultimate goal for the development of V MW:
Cost price per kilowatt hour generated, calculated over the design lifetime of the turbine, was to be lower than ever before.
Stronger and lighter tower:
Instead of welded brackets, magnets are used to fasten interior components to tower wall. This increases the fatigue strength of the tower.
For ultimate tower strength: stronger steel type used than previously.
Weight: 80 m tower for V MW weighs app. 156 tons (IEC I) ~ 78 m tower for V80 weighs app. 203 tons (IEC I).
Vestas has reduced total tower weight by app. 44 tons, which facilitates more cost effective transport.
New nacelle design:
New nacelle generates more energy. Yet overall size and weight of the nacelle itself or the loads on tower and foundation are not increased!
Benefits of innovative nacelle design:
Allows forces acting on the machine to be absorbed by an optimised machine foundation
Hub is fitted to large bearing placed on outer periphery of gearbox. Hereby, need for conventional main shaft is eliminated which results in a lighter construction.
Length of V90 nacelle is reduced compared to V80. Weight of V90 nacelle is almost the same as V80.
Transportation: New nacelle design is self-supporting and transport equipment can be attached directly to the nacelle.
Blade innovations:
New blade design improves performance and increases output yet at the same time reduces loads on the machine.
Extremely light blades: Carbon fibre – very strong and light material - used instead of fibreglass for the load carrying structure of the blade. This has made it possible to reduce the amount of material used for the blades, thus reducing the overall weight and consequently loads.
New airfoil design improves energy production, reduces sensitivity to roughness on leading edge of the blade, and maintains good geometrical relationship between one airfoil thickness and the next.
V MW in Portugal

30. V90-3.0 MW Technical specifications
Nominal output: 3.0 MW
Rotor diameter: 90 m
Area swept: 6,362 m2
Nominal revolutions: 16.1 rpm
Power regulation: Pitch/OptiSpeed®
Air brake: 3 separate pitch cylinders
Generator: asynchronous with OptiSpeed®
Cut-in wind speed: 4 m/s
Nominal wind speed: 15 m/s
Tower (hub height), app.: 80 m, 105 m
Control:
Microprocessor-based
OptiSpeed® output regulation and optimisation
OptiTip® pitch regulation
OptiSpeed ®:
OptiSpeed® optimises energy production, making it easy to adapt turbine operation to grid parameters.
Enables rotor to operate at variable speed (rpm) and hereby optimises aerodynamic efficiency of the rotor.
OptiSpeed® allows the rotor speed to vary within a range of approximately 60 per cent in relation to nominal rpm. Thus with OptiSpeed®, the rotor speed can vary by as much as 30 per cent above and below synchronous speed. This minimises both unwanted fluctuations in the output to the grid supply and the loads on the vital parts of the construction. 
OptiSpeed® ensures that converter only converts generator rotor energy (accounts only for small part of entire energy production). The use of a converter eliminates the need to consume reactive power from electrical grid.
Note: OptiSpeed® is NOT available in the USA and Canada! Output regulation and optimisation via variable speed control and pitch regulation.
OptiTip®:
Microprocessor-controlled pitch regulation ensures continuous and optimal adjustment of the angels of the blades in relation to prevailing wind.
OptiTip® and OptiSpeed® systems: Allows optimisation of solution to requirements for high output and low sound levels, depending on the location
Control:
Microprocessor-based control of all the turbine functions with the option of remote monitoring. Output regulation
and optimisation via OptiSpeed® and OptiTip® pitch regulation.

31. V90-3.0 MW Nacelle construction
Blade
Anemometer
Blade bearing
Oil & water coolers
Slip rings
Hub
Main bearing
V MW - weight:
Hub height 80 m (IEC IA)
Nacelle: 70 t
Rotor: 41 t
Hub height 105 m (IEC IIA):
Gearbox
Trafo
Hydraulic power unit
Generator
High speed shaft
Yaw gear

32. V MW Power curve
V MW power curves values (kW) – wind speed (m/s):
Air density: kg/m3
50 Hz:
4 m/s 77 kW
5 m/s kW
6 m/s kW
7 m/s kW
8 m/s kW
9 m/s kW
10 m/s kW
11 m/s kW
12 m/s kW
13 m/s kW
14 m/s kW
15 m/s kW
16-25 m/s kW
60 Hz:

33. Choosing the right turbine
…is the key to a feasible wind power project
Choosing the right turbine is the key to a wind turbine project that provides a strong return on investment. As this presentation has demonstrated, Vestas has a broad range of turbines, each targeting specific conditions and priorities.
Vestas can help determine which turbines satisfy individual requirements and design a solution that is optimal and competitive.

34. Questions?