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- Category: Articles
Maximising Blade Performance Through Aerodynamic Optimisation
Every wind turbine blade can be optimised. This is a bold statement but it is based on a number of factors that apply in varying degrees to all turbines: surface contamination and erosion, limitations and assumptions of standard design tools, design compromises to meet time/cost deadlines, adherence to standard wind classifications, and continual development of new technology. How can we go about optimising a blade that has already been installed? This article will describe the different technical methods and solutions available to extract more energy from a rotor, enabling wind turbines to deliver more revenue to their owners and to contribute more to global carbon reduction targets.By Nicholas Gaudern, Chief Technical Officer, Power Curve, Denmark
- Category: Articles
And the Modular CaseThe wind industry is primed for precast tower foundations. The economics point to significant returns to wind farm contractors and owners as the focus changes to longevity and expanding the construction and OEM delivery season.
By David McFeeters-Krone and Chris Fernandes, RUTE Foundation Systems, USA
- Category: Articles
New Techniques Provide Value Chain SavingsNew industrial connectors enable the rear mounting of interfaces for switch cabinets. Using this option, all relevant connection steps can be carried out from the inside of a cabinet. Moreover, many installation processes can be shifted to the pre-assembly stage, thus helping to save expensive technician hours in the field. The termination technique can also accelerate processing. For example, the radial cage clamp used by Han ES Press enables a tool-free connection, in addition to offering options for bridging contacts directly on the insert.
By Carsten Edler, Industry Segment Manager Wind Energy, Harting Electric, Germany
- Category: Articles
Investigating New Designs Through Wake Loss and Cable Topology OptimisationOffshore wind energy is an emerging technology that is becoming increasingly viable as technical and scientific improvements drive down the levelised cost of electricity making it more competitive with onshore wind technology and other forms of electricity generation.
By Bryce Wade, Canada
- Category: Articles
A New Technology Developed and Optimised for Offshore UseThis article focuses on the main characteristics of two-bladed teetering hinged turbines on top of floating platforms. It highlights how the teetering hinge positively affects fatigue and loads caused by wind–wave interaction and summarises the cost-effective technological choices for the system features and installation method.
By Silvestro Caruso, Chief Technical Officer, Seawind Ocean Technology, The Netherlands
- Category: Articles
What Will Come After the Germany Renewable Energy Sources Act?In many places, operators and investors in Germany are asking, ‘What will come after the EEG (Renewable Energy Sources Act)?’ This means the time after the 20-year period with fixed feed-in tariffs. In contrast, in many countries around the globe there are no fixed feed-in rates governed by law at all – investors need to find offtakers for their eco-power from the first kilowatt-hour onward. This is where power purchase agreements (PPAs) come into place. On the other hand, such PPA structures are often also supported by tax or financing benefits or green quotas. Thus, what kind of prospects do PPAs offer for the German energy market?
Björn Broda, Head of Corporate Strategy, Communications & Public Affairs Department, juwi, Germany
- Category: Articles
Engineering Approach to Designing New Solutions for FoundationsWith the increase in average turbine size witnessed by the global wind industry over the years, foundations have also become enormous. Therefore, innovation and expertise are crucial to remain competitive in an industry where optimisation is essential in order to reduce the costs associated with foundations.
By Alexander Martin, CEO, CTE Wind, France
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