This paper presents a procedure for wind farm model simulation. The simulation model serves as a benchmark for controller development and verification in the EU-FP7 project Aeolus. A generic dynamic flow modeling relates single turbine production and fatigue load to the map of wind speeds. The model integrates the wind farm aerodynamics to the dynamics of individual turbines by means of wake me...

An important implementation issue for wind farms is the risk of bird collision. A lot of the existing knowledge on birds and wind energy is based on studies at onshore sites. With respect to wind energy implementation especially offshore, more information about the environmental impact is needed. Several countries carrying out environmental base line studies focuses on offshore wind farm sites....

The installation phase is a critical stage during the lifecycle of an offshore wind turbine. This paper presents state-of-the-art review technical aspects turbine installation. An overview first presented introducing classification turbines, vessels, rules and regulations, numerical modelling tools. Then, various methods concepts for bottom-fixed floating turbines are critically discussed, foll...

Abstract This paper investigates the limiting wave conditions at which a wind turbine technician can complete maintenance activities safely and effectively on 15MW floating offshore turbine. Through linear, frequency-domain statistical analysis of motion applying acceptable limits for working, significant height peak period are investigated. It was found that over range considered, nacelle did ...

Abstract In recent years dynamic induction control has shown great potential in reducing wake-to-turbine interaction by increasing the mixing wake. With these wake methods thrust force will vary time. If applied to a floating offshore wind turbine, it cause platform move. this paper effect of Helix approach on DTU10MW turbine TripleSpar and its is evaluated. When at Strouhal equal 0.25, yaw mov...

One of the critical design driving load cases for modern large onshore/offshore wind turbines is power production in extreme turbulence. According to the IEC 61400-1 edition 3 design standard, the normal production extreme loads are extrapolated and compared to the extreme loads obtained under extreme turbulence input. This study shows that using a probabilistic approach and the first order rel...

This paper focuses on the wind energy conversion system (WECS) with the three main electrical aspects: 1) wind turbine generators (WTGs), 2) power electronics converters (PECs) and 3) grid-connection issues. The current state of wind turbine generators are discussed and compared in some criteria along with the trends in the current WECS market, which are ‘Variable Speed’, ‘Multi-MW’ and ‘Offsho...

A Markov model for the performance of wind turbines is developed that accounts for component reliability and the effect of wind speed and turbine capacity on component reliability. The model is calibrated to the observed performance of offshore turbines in the north of Europe, and uses wind records obtained from the coast of the state of Maine in the northeast United States in simulation. Simul...

In the run-up to a governmental invitation to tender for the construction offshore wind farms in the Languedoc Rousillon, coastal municipalities have been voicing fear about their potential impact on the tourist industry. To understand how offshore wind farms may affect tourism, we conducted a choice experiment with coastal tourists in Languedoc Rousillon. We elicited willingness to pay and wil...