- Category: Articles
Technologies, Modelling and Costs
Wind turbines are subject to high mechanical and environmental loads, including extreme winds, storms, rain, gravitational load on rotating blades, and temperature and humidity variations. These loads lead to the degradation of wind turbine parts, in particular wind turbine blades. Repair of wind turbine blades can cost many thousands of dollars. Such high costs can influence the wind energy costs in general. Thus, efficient repair of wind turbines is an important element of the renewable energy transition, making wind energy more competitive. In this article, mechanisms of wind turbine blade degradation, repair technologies and possibilities to reduce the repair costs are reviewed.
By Leon Mishnaevsky Jr, Senior Scientist, Technical University of Denmark, Denmark
- Category: Articles
A Remote Condition Monitoring Strategy Can Avoid Uneconomical Operations
By Mike Hastings, Senior Application Engineer, Brüel & Kjær Vibro, Denmark
- Category: Articles
Modelling of Wind, Wave and Wakes for Offshore Wind Energy
Sixteen offshore wind energy lease areas are currently under active development along the US east coast and six more in the New York Bight were recently auctioned for bids of nearly $ 4.4 billion. Observational data is sparse in this region so analyses of numerical simulations pertinent to operating conditions, power and wake production are summarised and used to highlight processes that are worthy of further investigation.
By Rebecca J. Barthelmie, Jeanie A. Aird, Frederick Letson and Sara C. Pryor, Cornell University, USA
- Category: Articles
Four Strategies for Major Component Replacement
This article details the current state of O&M in floating wind with a particular focus on major component replacement strategies. It summarises year-long discussions held by the expert members of the World Forum Offshore Wind.
By Ilmas Bayati, Peak Wind, Denmark
- Category: Articles
Effects of Erosion on Wind Turbine Leading Edge and Countermeasures
In recent years, operators of wind farms have become aware of an annoying effect reducing the performance of their turbines – the impact of weather-induced erosion at the rotor blade surface, mainly at the leading edge (Figure 1). Offshore wind parks in particular are impacted, driven by droplets of water hitting the blades with high velocity.
By Jan Liersch and Bastian Sundermann, Key Wind Energy, Germany
- Category: Articles
In Situ Method Makes Repairs More Economically Feasible
A new invention for repairing yaw rings in situ is expected to make a contribution to extending the lifespan of wind turbines. Developed by Danish machining expert CNC Onsite, the patented system means the yaw ring does not need to be replaced, eliminating the expensive, time-consuming and potentially detrimental disassembly of the rotor and nacelle.
By Søren Kellenberger, Sales Director, CNC Onsite, Denmark
- Increased Energy Production of Wind Turbines
- Preventing Bird Collisions
- Managing Larger Floating Offshore Wind Turbines
- Adaptable Blades for Offshore Wind
- Larger, Lighter and Longer-Lasting Rotor Blades
- Clean, Green Wind Machine
- Aircraft Detection Lighting Systems
- Satellite-Based Surface Roughness Products
- Navigating the Floating Structure Minefield
- Erosion of Wind Turbine Blades
- Lightning Protection for Wind Turbines
- Wind Turbines and Computational Fluid Dynamics
- Future Super Large Rotor Blades
- Moving Rotor Hubs
- Wind Turbine Inspection with Drones
- A Critical Element for Wind Farm Profitability
- Consequences of Large Wind Farm Clustering
- Airfoils for Wind Turbines
- Wind Blade Circular Economy Pathways
- Partial Repowering of Wind Turbines
- Understanding and Applying Optimal Bolt Tension
- The Sustainable Finance Disclosure Regulation Race
- Old Dogs and New Tricks
- Flow Optimisation Wind Turbine Blades
- Buying and Selling Ageing Wind Assets
- Obsolescence of Analytical Methods
- Complex Wind Sites Made Simple and Bankable with Lidar and Computational Fluid Dynamics
- Less Bird Deaths with Black Wind Turbine Blades
- Wind Turbine Performance Optimisation
- Interconnected Grid as an Enabler of Carbon-Neutral Energy System
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