Wave and Wind Energy – News 2012
1 Productivity and economic assessment of wave energy projects through operational simulations - Renewable Energy, Volume 48, December 2012, Pages 220-230
Boris Teillant, Ronan Costello, Jochem Weber, John Ringwood
Highlights
► We present a methodology for the assessment of the energy productivity and economic value of ocean wave energy schemes. ► Use of detailed operational simulations developed to generate estimates of operational costs and device availability. ► We perform and illustrate a sample example which tests the assessment for a variety of maintenance activities. ► We show it is possible to identify the areas that are of most influence on the economic performance.
2 A new wind turbine fault diagnosis method based on the local mean decomposition - Renewable Energy, Volume 48, December 2012, Pages 411-415
W.Y. Liu, W.H. Zhang, J.G. Han, G.F. Wang
Highlights
► A novel wind turbine fault diagnosis method based on the local mean decomposition (LMD) technology is proposed. ► Wind turbine vibration signal have nonlinear, non-Gaussian characteristics. ► LMD is a new iterative approach to demodulating amplitude and frequency modulated signals. ► LMD is suitable to get the instantaneous frequency in wind turbine vibration condition monitoring and fault diagnosis. ► Experimental analysis proved the feasibility and availability of this new method.
3 Condition monitoring of wind turbines: Techniques and methods - Renewable Energy, Volume 46, October 2012, Pages 169-178
Fausto Pedro Garcнa Mбrquez, Andrew Mark Tobias, Jesъs Marнa Pinar Pйrez, Mayorkinos Papaelias
Highlights
► This paper provides a review of the state-of-the-art in the CM of wind turbines. ► It describes the different maintenance strategies, CM techniques and methods. ► It is highlighted the various combinations of these reported in the literature. ► Future research opportunities in fault diagnostics are identified using a qualitative FTA.
4 Protection of interconnected wind turbines against lightning effects: Overvoltages and electromagnetic transients study - Renewable Energy, Volume 46, October 2012, Pages 232-240
R.B. Rodrigues, V.M.F. Mendes, J.P.S. Catalгo
Highlights
► The protection of two interconnected wind turbines against the effects of lightning is sought. ► Computer simulations are obtained by using EMTP-RV. ► Direct and indirect lightning strokes are considered. ► An application to a case study is presented.
5 Wave energy assessments in the Azores islands - Renewable Energy, Volume 45, September 2012, Pages 183-196
Liliana Rusu, C. Guedes Soares
Highlights
► An evaluation of the wave energy patterns in the Azores islands is made. ► An analysis of the wave climate is carried out with remotely sensed data. ► A prediction system based on spectral wave models is implemented and validated. ► The spatial distribution of the wave energy is evaluated for both winter and summer seasons. ► An evaluation is made for the average energy that would be provided by a PELAMIS installation.
6 Quantifying the global wave power resource - Renewable Energy, Volume 44, August 2012, Pages 296-304
Kester Gunn, Clym Stock-Williams
Highlights
► NOAA WW3 data are used to calculate the global distribution of wave energy resource. ► The resource incident on the world’s coastlines is quantified: 2.11TW globally. ► The extractable resource is quantified using an illustrative wave energy converter. ► Confidence limits for presented results are derived and examined.
7 A novel switched power filter-green plug (SPF-GP) scheme for wave energy systems - Renewable Energy, Volume 44, August 2012, Pages 340-358
Emre Ozkop, Ismail H. Altas, Adel M. Sharaf
Highlights
► A novel FACTS switched power filter-green plug (SPF-GP) Scheme for wave energy conversion utilization systems is presented. ► The novel FACTS SPF-GP system is utilized to provide a stable voltage regulation at the common DC bus for the dc loads. ► The effects of the proposed scheme and controller are examined using the developed simulation model and experimental setup. ► A three loop dynamic error driven PI controller is used to regulate the novel FACTS SPF-GP scheme for different cases.
8 Assessing the wave energy converter potential for Australian coastal regions -
Renewable Energy, Volume 43, July 2012, Pages 210-217
Sam Behrens, Jennifer Hayward, Mark Hemer, Peter Osman
Highlights
► The performance of three different wave energy converter (WEC) technologies was evaluated for Australian coastal regions. ► One of these WECs was found to operate with a capacity factor greater than 54.3%. ► The levelised cost of electricity (LCOE) for these WECs is in the order of $78/MWh.
9 Transient analysis of grounding systems for wind turbines - Renewable Energy, Volume 43, July 2012, Pages 284-291
Damir Cavka, Dragan Poljak, Vicko Doric, Ranko Goic
Highlights
► Transient analysis of realistic wind turbine grounding system. ► The influence of additional vertical and horizontal electrodes is analyzed in detail. ► No significant difference where found between additional horizontal and vertical electrodes. ► Interconnection between WT grounding systems doesn"t decrease very early transient impedance. ► Very high values of step voltages can be expected in the case of lightning strike.
10 Mitigation of flow separation using DBD plasma actuators on airfoils: A tool for more efficient wind turbine operation - Renewable Energy, Volume 42, June 2012, Pages 105-110
Seth Walker, Takehiko Segawa
Highlights
► Dynamic behaviors of flow separation were measured by particle image velocimetry. ► Effectiveness of active separation control by DBD plasma actuator was estimated. ► DBD plasma actuator at leading edge is effective for turbulent separation control. ► DBD plasma actuator at quarter chord is effective for laminar separation control.
11 Probabilistic forecasting of the wave energy flux - Applied Energy, Volume 93, May 2012, Pages 364-370
P. Pinson, G. Reikard, J.-R. Bidlot
Highlights
► An original probabilistic forecasting methodology for the wave energy flux is presented. ► The models involved use meteorological forecasts and local measurements as input. ► Their parameters are adaptively and recursively estimated. ► The quality of that forecasting methodology is demonstrated for 13 locations over a period of 15 months. ► The log-Normal assumption may be refined in the future.
12 Clean energy that safeguards ecosystems and livelihoods: Integrated assessments to unleash full sustainable potential for renewable energy - Renewable Energy, In Press, Corrected Proof, Available online 10 March 2012
Andrea K. Athanas, Nadine McCormick
13 Modes of response of an offshore wind turbine with directional wind and waves - Renewable Energy, In Press, Corrected Proof, Available online 6 February 2012
M. Philippe, A. Babarit, P. Ferrant
14 Study on the wave climate variation to the renewable wave energy assessment - Renewable Energy, Volume 38, Issue 1, February 2012, Pages 50-61
Tsai Ching-Piao, Hwang Ching-Her, Hwa Chien, Cheng Hao-Yuan
Highlights
► We reconstruct the historical wave records in the North-western Pacific using SWAN model and NCEP re-analysis wind fields. ► We exam the temporal variations of wave energy. ► Oscillations of wave energy in three temporal scales i.e. annual, inter-annual and decadal variations are identified. ► The inter-annual wave energy oscillations are highly dependent on the ENSO phenomenon. ► The wave energy oscillations bring significant impacts to the cost-benefit assessment of wave energy conversion.
15 Research on the Smooth Output of Renewable Energy - Procedia Engineering, Volume 29, 2012, Pages 461-465
Youjie Ma, Buyun Ma, Xuesong Zhou
