Browsing NTNU Open by Author "Smilden, Emil"
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Active Load Mitigation to Counter the Fatigue Damage Contributions From Unavailability in Offshore Wind Turbines
Sørum, Stian Høegh; Smilden, Emil; Amdahl, Jørgen; Sørensen, Asgeir Johan (Chapter, 2018)The offshore wind industry continues to grow, but there is still a need for more economical designs. As unavailability conditions can be critical for the fatigue damage in support structures, design standards use conservative ... -
Key Contributors to Lifetime Accumulated Fatigue Damage in an Offshore Wind Turbine Support Structure
Smilden, Emil; Bachynski, Erin Elizabeth; Sørensen, Asgeir Johan (Chapter; Peer reviewed, 2017)A simulation study is performed to identify the key contributors to lifetime accumulated fatigue damage in the support-structure of a 10 MW offshore wind turbine placed on a monopile foundation in 30 m water depth. The ... -
Post‐installation adaptation of offshore wind turbine controls
Smilden, Emil; Sørum, Stian Høegh; Bachynski, Erin Elizabeth; Sørensen, Asgeir Johan; Amdahl, Jørgen (Journal article; Peer reviewed, 2020)The cost of offshore wind energy can be reduced by incorporating control strategies to reduce the support structures' load effects into the structural design process. While effective in reducing the cost of support structures, ... -
Preventing Tower Resonance Induced by Thrust Variations on a Large 10MW Wind Turbine
Smilden, Emil (Master thesis, 2015)A simulation model based on a 10MW wind turbine is developed to test the performance of a speed exclusion zone algorithm with the purpose of preventing tower resonance. The model includes rotor aerodynamics, drive-train ... -
Site-specific controller design for monopile offshore wind turbines
Smilden, Emil; Bachynski, Erin Elizabeth; Sørensen, Asgeir Johan; Amdahl, Jørgen (Journal article; Peer reviewed, 2018)The fatigue life of offshore wind turbine (OWT) support structures is sensitive to variations in site-specific conditions such as the water depth and soil properties. Site condtions may vary significantly within a wind ... -
Structural Control of Offshore Wind Turbines – Increasing the role of control design in offshore wind farm development
Smilden, Emil (Doctoral theses at NTNU;2019:335, Doctoral thesis, 2019) -
Wave disturbance rejection for monopile offshore wind turbines
Smilden, Emil; Bachynski, Erin Elizabeth; Sørensen, Asgeir Johan; Amdahl, Jørgen (Journal article; Peer reviewed, 2019)The dimensions of offshore wind turbine (OWT) support structures are governed by fatigue considerations. For 6‐ to 10‐MW OWTs, wave loads are often dominating in terms of fatigue utilization. The present work proposes a ...