Another factor that helps to maximise the efficiency and optimise the sound level of the V80-2.0 MW turbine is OptiSpeed®*. The OptiSpeed® generator allows the turbine rotor speed to vary between 9 and 19 rpm, depending on conditions. While the technology involved may be advanced, its purpose is simple: to optimise output. It does this bytapping the higher efficiency of slow and variable rotation, storing excess energy in rotational form and exploiting the full force of transient gusts. All told, OptiSpeed® boosts annual energy production. As an added benefit, OptiSpeed® also reduces wear and tear on the gearbox, blades and tower on account of lower peak loading. Moreover, as turbine sound is a function of wind speed, the lowerrotation speeds made possible by OptiSpeed® naturally reduce sound levels. Finally, OptiSpeed® helps the V80 turbine deliver better quality power to the grid, with rapid synchronisation, reduced harmonic distortion and less flicker. Quite simply, the V80-2.0 MW turbine is synonymous with more output, better quality power and less mechanical strain and sound.
Proven Performance Top of its class
TheV80-2.0 MW turbine has been engineered to make the very most of IEC I sites, as it provides unparallelled productivity in both high and moderate winds. More than 2,700 V80 turbines have already been installed around the world, and have proved themselves to be seasoned performers in both onshore and offshore environments. The high energy yield of the V80 turbine makes it an excellent choice forlocations where space is limited. However, it also boasts an excellent track record in challenging offshore conditions, where its high operational availability, excellent grid compliance and proven technology make it a competitive choice with respect to both cost and performance. One of the factors that contribute to the superior performance of the V80-2.0 MW turbine is OptiTip®, its pitch regulationsystem. This system features microprocessors that rotate the blades around their longitudinal axes, thus ensuring continuous adjustment to maintain optimal blade angles in relation to the prevailing wind. At the same time, OptiTip® makes it possible to keep sound levels within the limits stipulated by local regulations. Wind power plants require substantial investments, and the process can be verycomplex. To assist in the evaluation and purchasing process, Vestas has identified three factors that are critical to wind turbine quality: energy production, power quality and sound level. We spend months testing and documenting these performance areas for all Vestas turbines. When we are finally satisfied, we ask an independent testing organisation to verify the results – a practice we callProven Performance. At Vestas we do not just talk about quality. We prove it.
* Vestas OptiSpeed® is not available in the USA and Canada.
a 5 9 8 k b j i hg 7 6 f 4 e 3 d 2 1
1 Hub controller 2 Pitch cylinders 3 Blade hub 4 Main shaft 5 Oil cooler
6 Gearbox 7 Mechanical disc brake 8 Service crane 9 VMP-Top controller with converter a Ultrasonic sensorsb High voltage transformer c Blade d Blade bearing e Rotor lock system f Hydraulic unit
g Machine foundation h Yaw gears i Composite disc coupling j OptiSpeed® generator k Air cooler for generator
Power curve V80-2.0 MW
2,200 2.000 1,800 1,600
Sound (dB(A)) Output (kW)
110 106 102 98 94 90 86 82 78 74 45 40
Speed of revolution (rpm)
35 30 25 20 15 10 5 0
1,400 1,2001,000 800 600 400 200 0
101.0 dB(A) 104.0 dB(A)
102.0 dB(A) 105.1 dB(A)
102.5 dB(A) 106.4 dB(A) (Offshore)
Wind speed (m/s)
Wind speed (m/s)
Sound 101.0 dB(A) Speed of revolution (rpm)
The figure above illustrates the power curves at different sound levels for the V80-2.0 MW turbine, which...