Connect with us

Hi, what are you looking for?


Wind Energy

Vestas Boosts Low-Wind Performance With New V136-3.45 MW Turbine

Danish wind giant Vestas have introduced a new turbine engineered for high performance at low wind speeds — the V136-3.45 MW.

Photo Credit: Vestas.

According to Vestas, the technologies engineered into its new turbine enable it to increase annual energy production by more than 10% compared to its predecessor, the V126-3.3 MW. More important yet is that these improvements will hold for operations even in low-wind environments.

Efficient operation at low-wind sites is a major catalyst for development in today’s wind industry because it opens up new frontiers for installing wind power. But there are challenges. A key obstacle is that at low wind speeds there isn’t sufficient torque on turbine blades to make them rotate and generate electrical power, leaving the turbine uneconomical.

In acknowledging this problem — and the market opportunities that low-wind sites represent — wind turbine manufacturers like Vestas have engineered solutions which enable what wind is available to be harnessed. The minimal wind speed at which turbines can begin operating is referred to as “cut-in speed” — for most machines it’s around 4m/s. Vestas’ new turbine has a cut-in speed of just 3m/s.

Breaking Down the Technical Features

The V136-3.45 MW features Vestas’ largest onshore rotor diameter of 136 meters, and a swept area of 14,527 metres-squared. Swept area is the area of the plane through which blades travels as they rotate, and it’s a critical value in determining the power that a wind turbine produces.

Key design features and advances of the V136 3.45 MW turbine. Photo Credit: Vestas.

Vestas note that “advanced aerofoil blade design” is a key feature of the new model. This is a reference to the aerodynamic profile of the blades; a subject of major research in an effort to produce blades which respond as efficiently as possible to winds.

“Aerofoil” simply refers to a curved surface designed to produce a preferred ratio of lift to drag — where lift is one of the principal forces that make wind turbines work. Blade aerofoils are highly variable across the wind industry, and there’s not one ideal design. Rather, different designs are deemed more suitable to particular wind environments, or favoured due to their implications for the rest of the turbine architecture.

The aerofoil of each of the V136-3.45 MW’s three 66.7 metre blades, in particular the blade tip profile, are key to its ability to harness slower winds.

Vestas have also made note of the claim that the turbine operates with significantly reduced noise compared to its other models — an important factor for consideration in the context of onshore wind projects.

Alongside these technological advances, there’s good reason to anticipate the new turbine will be successful. Much of its architecture, including its nacelle and hub design, is based off of Vestas’ 3 MW platform — the company’s proven and versatile portfolio of varied 3 MW turbines. With collective installations around the world on both land and at sea totalling close to 7 GW, it’s Vestas’ most popular platform with a strong track record of success.

A V112-3 MW turbine – part of the 3 MW platform on which the new model is based. Photo Credit: Vestas.

The first V136-3.45 MW turbine will be installed sometime in 2016 at the Østerild National Test Center for large turbines in north western Denmark. Thereafter, Vestas expect to be ready for production in the second half of 2017.

Appreciate CleanTechnica’s originality and cleantech news coverage? Consider becoming a CleanTechnica Member, Supporter, Technician, or Ambassador — or a patron on Patreon.
Have a tip for CleanTechnica, want to advertise, or want to suggest a guest for our CleanTech Talk podcast? Contact us here.

Written By


You May Also Like

Clean Power

Modvion is building wooden towers for wind turbines, and the leading forest products firm Stora Enso is among those lending a hand.

Clean Power

The race is on to prevent catastrophic global warming, and if all goes according to plan, the Danish children’s toy maker Lego can pat...

Clean Power

Originally published by Union of Concerned Scientists, The Equation. By John Rogers Need a little clean energy pick-me-up? Offshore wind is offering more and more...

Clean Power

Offshore wind holds great promise as a source of clean, domestic, renewable energy that can meet the needs of communities along the nation’s coastlines....

Copyright © 2021 CleanTechnica. The content produced by this site is for entertainment purposes only. Opinions and comments published on this site may not be sanctioned by and do not necessarily represent the views of CleanTechnica, its owners, sponsors, affiliates, or subsidiaries.