Publications

Reports

• Vejen, F., D.3.3 Present methodology for and evaluation of precipitation erosion warning based on radar data, 2021, Erosion project. DMI.
  D3.3 Erosion Warning Methodology
  
  

• Tilg, A.M. & Sørensen, S. A.. & Hasager, C. B. & Vejen, F.
  D1.4 Data on rain drop size distribution at selected sites
  
  
• Vejen, F.,  Bøvith, T. & Gill, R. (2019)
  D3.2 Regional precipitation erosion forecasts (data)
  
  
• Hasager, C. & Vejen, F. (2017)
  Disdrometers in EROSION
  
  
• Sjöholm, Michael & Mikkelsen, Torben
  D3.1 Lidar tested versus disdrometer
  
  
• Vejen, F., Tilg, A.-M., Nielsen, M., & Hasager, C.
  Precipitation Statistics for Selected Wind Farms

Journal papers

• Tilg, AM, Skrzypiński, WR, Hannesdóttir, Á & Hasager, CB 2022,
  'Effect of drop‐size parameterization and rain amount on blade‐lifetime calculations considering leading‐edge erosion',
  Wind Energy.

• Bech, JI, Johansen, N F-J, Madsen, MB, Hannesdóttir, Á, Hasager, CB.
  Experimental Study on the Effect of Drop Size in Rain Erosion Test and on Lifetime Prediction of Wind Turbine Blades.
  Renewable Energy (in review) https://papers.ssrn.com/sol3/papers.cfm?abstract_id=4011160

• Fæster, S. Johansen, N. F.-J., Mishnaevsky Jr., L., Kusano, Y., Bech, J.I. and Madsen, M. B. (2021)
  Rain erosion of wind turbine blades and the effect of air bubbles in the coatings
  Wind Energy
  
  

• Hasager CB, Vejen F, Skrzypiński WR, Tilg A-M. (2021)
  Rain Erosion Load and Its Effect on Leading-Edge Lifetime and Potential of Erosion-Safe Mode at Wind Turbines in the North Sea and Baltic Sea.
  Energies, 14(7):1959
  
  

• Mishnaevsky Jr., L., Hasager, C.B., Bak, C., Tilg, A.-M., Bech, J. I., Rad, S.D., Fæster, S. (2021) 
  Rain erosion of wind turbine blades: Understanding, prevention and protection
  Renewable Energy, 169,  953–969
  
  

• Tilg, A.-M., Hagen, M., Vejen, F., Hasager, C. B. (2021) 
  Variation of leading-edge-erosion relevant precipitation parameters with location and weather 2 type
  Meteorologische Zeitschrift
  
  

• Tilg, A.-M., Vejen, F., Hasager, C. B., Nielsen, M. (2020) 
  Rainfall kinetic energy in Denmark: relationship with drop size, wind speed and rain rate
  J. Hydrometeor.
  

   

• W R Skrzypiński, J I Bech, Ch B Hasager, A-M Tilg and F Vejen, C. Bak (2020)
  Optimization of the erosion-safe operation of the IEA Wind 15 MW Reference Wind Turbine
  2020 J. Phys.: Conf. Ser.1618052034 - https://doi.org/10.1088/1742-6596/1618/5/052034
  
  

• Mishnaevsky Jr, L.. et al. (2019)

  Micromechanisms of Leading Edge Erosion of Wind Turbine Blades: X-Ray Tomography Analysis and Computational Studies
  Wind Energy
  
  
• Bech, J. Ilsted. Hasager, C. Bay and Bak, C. (2018)
  Wind Energy Sciences
  Extending the life of wind turbine blade leading edges by reducing the tip speed during extreme precipitation events

• Hasager, C.B., Vejen, F., Bech, J. I., Skrzypiński, W. R., Tilg, A.-M. Nielsen, M. (2020)
  Renewable Energy, 149, 91-102
  2020 Assessment of the rain and wind climate with focus on wind turbine blade leading edge erosion rate and expected lifetime in Danish Seas
   

Conference contributions

• Hasager, CB, Bech, JI, Hannesdóttir, Á, Madsen, JV, Johansen, NF-J & Vejen, F,
  Erosion safemode control demonstration,
  EERA SP4 WORKSHOP on Blade Erosion from the prospective of loads, controls and aerodynamics, 14 December 2021, CENER (online) 2021, Sound/Visual production (digital).
  https://backend.orbit.dtu.dk/ws/portalfiles/portal/266033145/Charlotte_Bay_Hasager.pdf

• Hasager, CB, Hannesdóttir, Á, Badger, M, Bech, JI, Johansen, NF-J, Madsen, JV & Göçmen, T,
  Estimation of leading edge erosion risk on wind turbines, repair prediction and mitigration strategy
  EERA DeepWind conference, Trondheim, Norway, 19-21 January 2022 2022, Sound/Visual production (digital).
  https://backend.orbit.dtu.dk/ws/portalfiles/portal/271222405/DeepWind_2022_Hasager_et_al.pdf

• Hasager, C. et al (2017)
  Potential solution for rain erosion of wind turbine blades
  Wind Energy Denmark annual conference 2017 
  
  

• Leading edge erosion of wind turbine blades.
  IMECHE, Onshore and offshore wind engineering 2018, 23-24 May 2018, Manchester, UK (invited oral)
  http://events.imeche.org/ViewEvent?code=CMP6643
  
  

• Hasager, C. et al. (2018)
  Rain and erosion on turbine blades.
  Science meets Industry Bergen, 13 Sep 2018, Bergen, Norway (invited oral) Slides are available at http://norcowe.no/index.cfm?id=442342 or here

• Bech, J.I. & Mishnaeavsky (2018)
  Performance of leading edge (erosion) protective materials
  Wind Energy Denmark 2018

• Hasager at al. (2018)
  Rain and wind conditions at offshore wind farms. Conference Offshore Wind R&D,
  Bremerhaven, Germany
  http://www.rave-offshore.de/en/conference.html
  
  

• Hasager, CB, Bech, JI & Bak, C, (2019)
  On leading edge erosion at turbine blades due to heavy rain and the application of erosion safe mode control to extend life
  8 May 2019, 3rd ACI Operations & Maintenance for Offshore Wind, London, United Kingdom (Invited speaker)
  http://orbit.dtu.dk/files/179418544/ACI_London_8May2019_Hasager_et_al.pdf
  
  

• Charlotte Hasager, C., Ahsbahs, T., Badger, M., Karagali, I., Hahmann, A., Mann, J., Bech, J.I., Bak, C., Larsén, X.G (2019)
  Research Needs for Offshore Wind Resource Characterization
  5-6 March 2019, Embassy Suites by Hilton Old Town Alexandria, Alexandria, Virginia,USA (Invited speaker)
  http://orbit.dtu.dk/files/178280822/DOE_US2019_Hasager_et_al.pdf
  
  

• Hasager, C., Bech, J. I., Bak, C., Mishnaevsky, L., Nielsen, S. F., Johansen, N. F.-J. (2019)
  Leading Edge Erosion of Wind Turbine Blades: Damage, Material Properties and Load Mitigation
  22-23 August 2019, International Workshop on the Specific Issues of Taiwan Offshore Wind Farm
  Powerpoint presentation
  
  

• Hasager, C., Bech, J. Tilg, A.-M.,  (2019)
  Wind and Rain Climate in Offshore Wind Farms Including Energy Production and Leading Edge Erosion Perspectives
  22-23 August 2019, International Workshop on the Specific Issues of Taiwan Offshore Wind Farm
  Powerpoint presentation

• Tilg, A.-M. et al.
  Seasonal variation of drop size distribution: influence on rainfall kinetic energy 
  EGU General Assembly 2019, Vienna, Austria
  Pdf presentation

• Tilg, A.-M. et al.
  Leading edge erosion of wind turbine blades: Need for raindrop-size measurements
  ICEM 2019, Lyngby, Denmark
  Presentation

• A.-M. Tilg et al.
  Comparison of measured raindrop size distributions in Denmark
  EMS 2019, Lyngby, Denmark 
  Pdf presentation

• Hasager, C., Ahsbahs, T., Badger, M., Karagali, I., Hahmann, A., Mann, J., Bech, J.I., Bak, C., Larsén, X.G (2019)
  Research Needs for Offshore Wind Resource Characterization
  5-6 March 2019, Embassy Suites by Hilton Old Town Alexandria, Alexandria, Virginia,USA (Invited speaker)
  Powerpoint presentation
  And the final report
  
   

• Arconada, J. O. (Author), Réthoré, P-E. (Author), Hasager, C. B. (Author), Bech, J. I. (Author), Friis-Møller, M. (Author), Pedersen, M. M. (Author), ... Skrzypinski, W. R. (Author). (2019).
  Blade erosion in wind farm layout and/or control optimization.
  Sound/Visual production (digital) Wind Energy Science Conference 2019, University College Cork, Cork, Ireland, 17/06/2019 → 20/06/2019
  Powerpoint presentation

• Hasager, C. B., Mishnaevsky, L., Bak, C.
  Leading edge erosion the state of the art research results
  WindEurope Offshore 2019: Our energy, our future, Copenhagen, Denmark, 26 Nov 2019 - 28 Nov 2019
  Poster presentation

• Tilg, A.-M., Vejen, F, Hasager, C. B. 
  Leading edge erosion: precipitation measurements offshore
  WindEurope Offshore 2019: Our energy, our future, Copenhagen, Denmark, 26 Nov 2019 - 28 Nov 2019
  Abstract

Data

• Disdrometer data Open Access of raw data and quality controlled (QC) data
  Risø - on the ground next to the tall met mast
  Raw: https://doi.org/10.11583/DTU.14501577.v1
  QC: https://doi.org/10.11583/DTU.14501592
  
  

• Risø - on the top of the tall met mast
  Raw: https://doi.org/10.11583/DTU.14501598.v1
  QC: https://doi.org/10.11583/DTU.14501601.v1
  
  

• Risø - on the ground next to the V52 met mast
  Raw: https://doi.org/10.11583/DTU.14501607.v1
  QC: https://doi.org/10.11583/DTU.14501610.v1
  
  

• Rødsand - offshore wind farm
  Raw: https://doi.org/10.11583/DTU.14501616.v1
  QC: https://doi.org/10.11583/DTU.14501619.v1
  
  

• Horns Rev 3 - offshore wind farm
  Raw: https://doi.org/10.11583/DTU.14501553.v1
  QC: https://doi.org/10.11583/DTU.14501568.v1
  
  

• Hvide Sande - DMI station
  Raw: https://doi.org/10.11583/DTU.14460006.v1
  QC: https://doi.org/10.11583/DTU.14501574.v1
  
  

• Thyborøn - DMI station
  Raw: https://doi.org/10.11583/DTU.14501622.v1
  QC: https://doi.org/10.11583/DTU.14501625.v1
  
  

• Voulund - DMI station
  Raw: https://doi.org/10.11583/DTU.14501628.v1
  QC: https://doi.org/10.11583/DTU.14501631.v1

Others

DTU tackles leading edge erosion of wind turbine blades

Jensen, K., Hasager, C. B., Mishnaevsky, L.,

Energy Insight Yearbook 2020  (pages 50-53)

https://issuu.com/energyinsight/docs/energy_insight_yearbook_2020_online_hq?fr=sYjExYzk4MTczNA

Workshops

International Symposium on Leading Edge Erosion of Wind Turbine Blades (4-6 February 2020)

• Programme
• Charlotte Bay Hasager
• Charlotte Bay Hasager et. al
• Witold Skrzypinski

Workshop on Solutions for Leading Edge Erosion (27 November 2018) OffshoreEnergy.dk/DTU Wind Energy 

• Programme

Presentations: 

• Project DURALEDGE - Durable leading edges for high tip speed wind turbine blades
• Reducing tip speed during heavy rain to prevent erosion

Workshop on Main Factors for Leading Edge Erosion (22 February 2018) OffshoreEnergy.dk/DTU Wind Energy

• Programme

Presentations: 

• Mertcan Bayar (E.ON)
• Jakob I. Bech, Charlotte B. Hasager and Christian Bak (DTU Wind Energy) 
• Wind Power Lab
• Nicolai Frost-Jensen Johansen (DTU)
• Leon Mishnaevsky Jr. and Yukihiro Kusano (DTU Wind Energy)
• Anna-Maria Tilg (DTU Wind Energy)
• Flemming Vejen (DMI)
• Martin Bonde Madsen (R&D)