World Wide Wind’s design, called the contra-rotating vertical turbine, or CRVT, essentially acts as two VAWTs in one. A lower one rotates around the stem of the tower, while the higher one is mounted at the top. Each one is set to rotate in opposite directions. One of the turbines is attached to the rotor while the other is attached to the “stator,” a setup that doubles the relative speed of rotation when compared with a static stator, producing more electricity.
The CRVT will tilt with the wind and employ specially-designed blades that World Wide Wind says should help to reduce turbulent wake downstream from each individual tower. This, it says, should allow operators to fit more of the turbines into a given area, allowing them to generate more electricity.
World Wide Wind aims for working 40-MW model by 2029
Currently, the world’s largest wind turbine is the 794 ft (242 meters) tall MingYang Smart Energy 16.0-242, which has a capacity of 16 MW. World Wide Wind claim they’ll blow those figures out the water as their system can scale up to a height of 1,312 ft (400 m), allowing for a massive 40-megawatt capacity per unit.
In an interview with Recharge, company representatives said they are working to speed up the development of the CRVT via rapid prototyping. They hope to have a 3-MW model ready by 2026 and one of the massive 40-MW machines as soon as 2029.