September October 2021

The Front Cover

Lightning damage stubbornly remains a major O&M expense for owner-operators in cost and frequency. Damage such as blade skin punctures, shell delamination, split trailing edges, and (less frequently) catastrophic damage to wind turbine blades is costly to repair and causes undesirable downtime. Arctura has developed a wind turbine blade coating that reduces lightning damage to turbine blades by encouraging surface flashovers (see page 7). (cover image: courtesy NTS Lightning Technologies).

Publisher's Note

HUSUM Wind 2021: first European on-site trade fair since the pandemic began

Features

Wind Turbines and Computational Fluid Dynamics
By Jacob Krispin and Joel Balbien, Vorcat, USA

Future Super Large Rotor Blades
By Frank Seewald, Torsten Sadowski, Roland Stoer, WINDnovation Engineering Solutions, Germany

Moving Rotor Hubs
By Sabrina Deininger

Windtech Future

Are We Going in the Right Direction?
By Ahmad Hemami, McGill University, Montreal, Canada

View from Inside

Together We Must Act Faster!
By Stefan Gsänger, Secretary General, World Wind Energy Association

Latest News

• Goldwind completes production of first 22MW offshore wind turbine
• TotalEnergies acquires majority stake in Danish offshore wind projects
• NORD/LB supports financing of 99.2MW Green Breeze wind farm in Romania
• Dual-Doppler scanning lidar systems tested for offshore wind energy in the UK and Japan
• Study reveals economic benefits of the Inflation Reduction Act for the USA
• Hugh Elliott appointed Executive Chairman of Iberdrola Energía Internacional
• One year since the European Wind Charter: Achievements and Challenges
• Cape Holland secures contract for Shinan-Ui offshore wind farm in South Korea
• Huisman integrates system for controlled blade installation into cranes for Havfram
• European Energy wins wind auction in Romania

 

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