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- Category: Articles
The Use of Train-Generated Mass Airflow to Produce Electricity
When wind power is mentioned, most of us think of the ‘classic’ tower plus blades design of above-ground onshore or offshore wind turbine generators. But, as this article about using the airflow generated by underground trains illustrates, there is potential to adapt wind turbine generator designs to harness ‘wind’ energy from other sources.
By Norman H. Holley, COO, WWT Tunnel, USA
- Category: Articles
A New High Capacity Rotor
Most wind turbines focus on maximising the efficiency with which power is extracted from the wind. By contrast, the focus at Lux Wind Power is on creating a wind turbine rotor that has a larger swept area in order to extract power at the lowest achievable cost. The large swept area rotor is expected to generate electricity at a much lower levelised cost of energy (LCOE) when compared to existing wind turbine technologies and Lux Wind Power is currently seeking financial support from the industry, investors and/or partners to bring this much-needed product to market.
By Glen Lux, CTO/Manager and Founder, Lux Wind Power, Canada
- Category: Articles
A Strategic Approach to Risk-Based Wind Development
Investing in a wind farm is an expensive business and can seem to be too risky for more cautious fund holders. Investors are more likely to be interested if it is possible for them to make a better informed decision on the projected financial returns. In particular, the estimate of how much energy the farm is likely to produce is critical to the final funding decision. The well-understood problem here is that energy production can only ever be an estimate during the planning phase, but how certain is that estimate? A new model makes it possible to be much more precise about the level of uncertainty and this should allow potential partners to define, and act on, the comfort zone within which they are prepared to work.
By Matthew Hendrickson, Vice President of Energy Assessment, and Francesca Davidson, Marketing Manager, Vaisala Inc. (formerly 3TIER), USA
- Category: Articles
Energy storage systems (ESSs) will be critical to the provision of an affordable, sustainable and secure electricity supply. ESSs support an increase in electricity consumed nearer to generation sources, bringing much needed cost efficiencies. They also make grids more flexible, reliable, resilient and stable. For example, when the frequency drops from its nominal value (which could cause parts of the network to shut down), frequency regulation enables energy companies to quickly ‘inject’ just the right amount of additional, controllable power into the grid. But what are the key challenges that need to be overcome from a technology, standards, market regulation and business model perspective?- Category: Articles
The method discussed in this article shows a low-cost approach to gain an insight into the wind conditions for a small wind turbine in the highly turbulent setting of the rooftop of a large building. Such an insight provides wind resource assessment and also guidance in micro-siting wind turbines.- Category: Articles
The emerging airborne wind sector continues to grow as small companies around the globe edge closer to commercialising innovative technologies. Boston-based Altaeros Energies is a pioneer in this field, securing the first approved and funded commercial demonstration of an airborne wind energy system in the USA. Altaeros is set to deploy its breakthrough 30kW wind turbine in Alaska in 2015. The Altaeros turbine will reach a height of 1,000 feet (300 metres), over 275 feet (83 metres) taller than the current record holder for the highest wind turbine, which is the Vestas V164-8.0-MW at the Danish National Test Centre for Large Wind Turbines.- Category: Articles
A research and development consortium (the ClusterDesign initiative) has now been running for nearly three years and recently completed its first round of activities. The partners in the project, which is partly funded by the European Union, have been trying to produce a series of interlinked models that can be put together to provide future designers of wind farms with a ‘Wind Cluster Controller’ and a 'ToolBox for Integrated Wind Farm Design'. These will help designers optimise the layout of turbines within a wind farm, and also improve the overall design of clusters of wind farms.Stay informed with Windtech International! Sign up here for our free newsletters
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| #13 GE Vernova 1.5MW wind turbines installed at Turkey Track wind farm in Nolan, Texas, USA (courtesy Rollin Wolf Koons) |
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