2024

• Lu, Biliang; Dibaj, Ali; Gao, Zhen; Rasekhi Nejad, Amir; Zhang, Yingjie. (2024) A class-imbalance-aware domain adaptation framework for fault diagnosis of wind turbine drivetrains under different environmental conditions. Ocean Engineering
  Academic article
• Siddiqui, Muhammad Omer; Nejad, Amir R.; Pedersen, Eilif. (2024) Virtual Model Development of the Load Application System of a Wind Turbine Nacelle Test Bench for Hybrid Test Applications. Journal of Dynamic Systems Measurement, and Control
  Academic article
• van Binsbergen, Diederik; Daems, Pieter-Jan; Verstraeten, Timothy; Nejad, Amir R.; Helsen, Jan. (2024) Scalable SCADA-Based Calibration for Analytical Wake Models Across an Offshore Cluster. Journal of Physics: Conference Series (JPCS)
  Academic article
• van Binsbergen, Diederik; Daems, Pieter-Jan; Verstraeten, Timothy; Nejad, Amir R.; Helsen, Jan. (2024) Performance comparison of analytical wake models calibrated on a large offshore wind cluster. Journal of Physics: Conference Series (JPCS)
  Academic article
• Alkarem, Yuksel; Huguenard, Kimberly; Verma, Amrit Shankar; van Binsbergen, Diederik; Bachynski-Polic, Erin Elizabeth; Nejad, Amir R.. (2024) Passive Mooring-based Turbine Repositioning Technique for Wake Steering in Floating Offshore Wind Farms . Journal of Physics: Conference Series (JPCS)
  Academic article
• Rezaei, Ashkan; Schleich, Florian; Menck, Oliver; Grassmann, Matthis; Bartschat, Arne; Nejad, Amir R.. (2024) Comparative analysis of rolling contact fatigue life in a wind turbine pitch bearing with different modeling approaches. Journal of Physics: Conference Series (JPCS)
  Academic article
• Alkarem, Yuksel R.; Huguenard, Kimberly; Verma, Amrit Shankar; van Binsbergen, Diederik; Bachynski-Polic, Erin Elizabeth; Rasekhi Nejad, Amir. (2024) Passive Mooring-based Turbine Repositioning Technique for Wake Steering in Floating Offshore Wind Farms. Journal of Physics: Conference Series (JPCS)
  Academic article
• van Binsbergen, Diederik; Daems, Pieter-Jan; Verstraeten, Timothy; Nejad, Amir R.; Helsen, Jan. (2024) Hyperparameter tuning framework for calibrating analytical wake models using SCADA data of an offshore wind farm. Wind Energy Science
  Academic article
• Tartt, Kelly Jane; Kazemi-Amiri, Abbas Mehrad; Nejad, Amir R.; Carroll, James; McDonald, Alasdair. (2024) Life extension of wind turbine drivetrains by means of SCADA data: Case study of generator bearings in an onshore wind farm. Results in Engineering (RINENG)
  Academic article

2023

• Mehlan, Felix Christian; Nejad, Amir R.. (2023) Rotor imbalance detection and diagnosis in floating wind turbines by means of drivetrain condition monitoring. Renewable Energy
  Academic article
• Mehlan, Felix Christian; Keller, Jonathan; Nejad, Amir R.. (2023) Virtual sensing of wind turbine hub loads and drivetrain fatigue damage. Forschung im Ingenieurwesen
  Academic article
• Rezaei, Ashkan; Guo, Yi; Keller, Jonathan; Nejad, Amir R.. (2023) Effects of wind field characteristics on pitch bearing reliability: a case study of 5 MW reference wind turbine at onshore and offshore sites. Forschung im Ingenieurwesen
  Academic article
• Purcell, Etienne; Nejad, Amir R.; Bekker, Anriëtte. (2023) Detection of ice using ship propulsion and navigation measurements. Ocean Engineering
  Academic article
• Siddiqui, Muhammad Omer; Nejad, Amir R.; Wenske, Jan. (2023) On a new methodology for testing full load responses of wind turbine drivetrains on a test bench. Forschung im Ingenieurwesen
  Academic article
• van Binsbergen, Diederik; Valavi, Mostafa; Nejad, Amir R.; Helsen, Jan. (2023) Effect of generator torque ripple optimization on a geared wind turbine drivetrain. Forschung im Ingenieurwesen
  Academic article
• Nejad, Amir R.. (2023) PREFACE. Journal of Physics: Conference Series (JPCS)
  Editorial
• Bhaskaran, Saravanan; Verma, Amrit Shankar; Goupee, Andrew J.; Bhattacharya, Subhamoy; Nejad, Amir R.; Shi, Wei. (2023) Comparison of Extreme Wind and Waves Using Different Statistical Methods in 40 Offshore Wind Energy Lease Areas Worldwide. Energies
  Academic article
• Siddiqui, Muhammad Omer; Feja, Paul Robert; Borowski, Philipp; Kyling, Hans; Nejad, Amir R.; Wenske, Jan. (2023) Wind turbine nacelle testing: State-of-the-art and development trends. Renewable and Sustainable Energy Reviews
  Academic literature review
• Rezaei, Ashkan; Nejad, Amir R.. (2023) Effect of wind speed distribution and site assessment on pitch bearing loads and life. Journal of Physics: Conference Series (JPCS)
  Academic article
• Ibrion, Mihaela; Nejad, Amir R.. (2023) On a road map for technology qualification, innovation and cost reduction in floating offshore wind: learning from Hywind and Norwegian approach. Journal of Physics: Conference Series (JPCS)
  Academic article

2022

• Nejad, Amir R.; Keller, Jonathan ; Guo, Yi; Sheng, Shawn; Polinder, Henk; Watson, Simon. (2022) Wind turbine drivetrains: state-of-the-art technologies and future development trends. Wind Energy Science
  Academic article
• Tartt, Kelly Jane; Amiri, Abbas K.; Nejad, Amir R.; McDonald, A.; Carroll, J.. (2022) Development of a Vulnerability Map of Wind Turbine Power Converters. Journal of Physics: Conference Series (JPCS)
  Academic article
• Mehlan, Felix Christian; Nejad, Amir R.; Gao, Zhen. (2022) Digital twin based virtual sensor for online fatigue damage monitoring in offshore wind turbine drivetrains. Journal of Offshore Mechanics and Arctic Engineering
  Academic article
• Dibaj, Ali; Nejad, Amir R.; Gao, Zhen. (2022) A data-driven approach for fault diagnosis of drivetrain system in a spar-type floating wind turbine based on the multi-point acceleration measurements. Journal of Physics: Conference Series (JPCS)
  Academic article
• Mehlan, Felix Christian; Pedersen, Eilif; Nejad, Amir R.. (2022) Modelling of wind turbine gear stages for Digital Twin and real-time virtual sensing using bond graphs. Journal of Physics: Conference Series (JPCS)
  Academic article
• van Binsbergen, Diederik; soares, marcelo nesci; Pedersen, Eilif; Nejad, Amir R.. (2022) A physics-, SCADA-based remaining useful life calculation approach for wind turbine drivetrains. Journal of Physics: Conference Series (JPCS)
  Academic article
• Dibaj, Ali; Gao, Zhen; Nejad, Amir R.. (2022) Fault detection of offshore wind turbine drivetrains in different environmental conditions through optimal selection of vibration measurements. Renewable Energy
  Academic article
• Nejad, Amir R.. (2022) Preface. Journal of Physics: Conference Series (JPCS)
  Editorial

2021

• Khazaeli Moghadam, Farid; Nejad, Amir R.. (2021) Theoretical and experimental study of wind turbine drivetrain fault diagnosis by using torsional vibrations and modal estimation. Journal of Sound and Vibration
  Academic article
• Khazaeli Moghadam, Farid; Nejad, Amir R.. (2021) Online condition monitoring of floating wind turbines drivetrain by means of digital twin. Mechanical systems and signal processing
  Academic article
• van Binsbergen, Diederik; Nejad, Amir R.; Helsen, Jan. (2021) Dynamic Model Development of Wind Turbine Drivetrains by Using Sensor Measurements. The American Society of Mechanical Engineers (ASME)
  Academic chapter/article/Conference paper
• Purcell, Etienne; Nejad, Amir R.; Valavi, Mostafa; Bekker, Anriëtte. (2021) On Uncertainty Assessment of Fatigue Damage of Propulsion Shaft Under Ice Impact. The American Society of Mechanical Engineers (ASME)
  Academic chapter/article/Conference paper
• Berge , Vegard; Helgesen, Christoffer Rene; Ivanov, Dimitar Zdravkov; Jahren, Marianne Helno; Opstad, Pauline Sundvor; Sletten, Petter Solem. (2021) On State-of-the-Art and Alternative Energy-Efficient Lifting Technologies for Deep Sea Mining. The American Society of Mechanical Engineers (ASME)
  Academic chapter/article/Conference paper
• Mehlan, Felix Christian; Nejad, Amir R.; Gao, Zhen. (2021) Estimation of Wind Turbine Gearbox Loads for Online Fatigue Monitoring Using Inverse Methods. The American Society of Mechanical Engineers (ASME)
  Academic chapter/article/Conference paper
• Khazaeli Moghadam, Farid; Nejad, Amir R.. (2021) Vibration-Based Condition Monitoring of Drivetrains in Large Offshore Wind Turbines in a Digital Twin Perspective. Norwegian University of Science and Technology
  Doctoral dissertation
• Wang, Shuaishuai; Moan, Torgeir; Nejad, Amir R.. (2021) A comparative study of fully coupled and de-coupled methods on dynamic behaviour of floating wind turbine drivetrains. Renewable Energy
  Academic article
• Nejad, Amir R.; Breivik, Andreas; Valavi, Mostafa. (2021) Fault Detection and Diagnosis of Induction Motor for Ship Propulsion by utilizing Electrical Signature and Finite Element Method. Norges teknisk-naturvitenskapelige universitet Norges teknisk-naturvitenskapelige universitet
  Masters thesis
• Torsvik, Jone; Nejad, Amir R.; Pedersen, Eilif. (2021) Experimental field study of floater motion effects on a main bearing in a full-scale spar floating wind turbine. Marine Structures
  Academic article
• Nejad, Amir R.; Purcell, Etienne; Mostafa, Valavi; Roman, Hudak; Benjamin, Lehmann; Francisco Gutiérrez, Guzmán. (2021) Condition Monitoring of Ship Propulsion Systems: State-of-the-Art, Development Trend and Role of Digital Twin. The American Society of Mechanical Engineers (ASME)
  Academic chapter/article/Conference paper
• Ibrion, Mihaela; Paltrinieri, Nicola; Nejad, Amir R.. (2021) Learning from failures in cruise ship industry: The blackout of Viking Sky in Hustadvika, Norway. Engineering Failure Analysis
  Academic article
• R. Nejad, Amir; Torsvik, Jone. (2021) Drivetrains on floating offshore wind turbines: lessons learned over the last 10 years. Forschung im Ingenieurwesen
  Academic article
• Khazaeli Moghadam, Farid; Rebouças, G. F. S.; Nejad, Amir R.. (2021) Digital twin modeling for predictive maintenance of gearboxes in floating offshore wind turbine drivetrains . Forschung im Ingenieurwesen
  Academic article
• Wang, Shuaishuai; Rasekhi Nejad, Amir; Bachynski, Erin Elizabeth; Moan, Torgeir. (2021) A comparative study on the dynamic behaviour of 10 MW conventional and compact gearboxes for offshore wind turbines. Wind Energy
  Academic article
• Wang, Shuaishuai; Nejad, Amir R.; Moan, Torgeir. (2021) Design and Dynamic Analysis of a Compact 10 MW Medium Speed Gearbox for Offshore Wind Turbines. . Journal of Offshore Mechanics and Arctic Engineering
  Academic article
• Ibrion, Mihaela; Nejad, Amir R.. (2021) On Building a Safe Ocean, The oceanscape and the necessity for developing an Ocean Culture.
  Popular scientific chapter/article
• Tartt, Kelly Jane; Nejad, Amir R.; Amiri, Abbas K.; McDonald, A.. (2021) On Lifetime Extension of Wind Turbine Drivetrains. The American Society of Mechanical Engineers (ASME)
  Academic chapter/article/Conference paper

2020

• Cho, Seongpil; Bachynski, Erin Elizabeth; Rasekhi Nejad, Amir; Gao, Zhen; Moan, Torgeir. (2020) Numerical modeling of the hydraulic blade pitch actuator in a spar‐type floating wind turbine considering fault conditions and their effects on global dynamic responses. Wind Energy
  Academic article
• Khazaeli Moghadam, Farid; Rasekhi Nejad, Amir. (2020) Evaluation of PMSG-based drivetrain technologies for 10 MW floating offshore wind turbines: pros and cons in a life-cycle perspective. Wind Energy
  Academic article
• Moan, Torgeir; Gao, Zhen; Bachynski, Erin Elizabeth; Rasekhi Nejad, Amir. (2020) Recent Advances in Integrated Response Analsysis of Floating Wind Turbines in a Reliability Perspective. Journal of Offshore Mechanics and Arctic Engineering
  Academic article
• Wang, Shuaishuai; Rasekhi Nejad, Amir; Moan, Torgeir. (2020) On design, modelling, and analysis of a 10‐MW medium‐speed drivetrain for offshore wind turbines. Wind Energy
  Academic article
• Ibrion, Mihaela; Paltrinieri, Nicola; Rasekhi Nejad, Amir. (2020) Learning from non-failure of Onagawa nuclear power station: an accident investigation over its life cycle. Results in Engineering (RINENG)
  Academic article
• van Binsbergen, Dirk Willem; Wang, Shuaishuai; Rasekhi Nejad, Amir. (2020) Effects of induction and wake steering control on power and drivetrain responses for 10 MW floating wind turbines in a wind farm. Journal of Physics: Conference Series (JPCS)
  Academic article
• Rasekhi Nejad, Amir. (2020) Life Prediction and Health Monitoring of Marine Propulsion System under Ice Impact (HealthProp).
  Website (informational material)
• Ibrion, Mihaela; Paltrinieri, Nicola; Rasekhi Nejad, Amir. (2020) Learning from failures: Accidents of marine structures on Norwegian continental shelf over 40 years time period. Engineering Failure Analysis
  Academic article
• Dong, Wenbin; Rasekhi Nejad, Amir; Moan, Torgeir; Gao, Zhen. (2020) Structural reliability analysis of contact fatigue design of gears in wind turbine drivetrains. Journal of Loss Prevention in the Process Industries
  Academic article
• Wang, Shuaishuai; Rasekhi Nejad, Amir; Moan, Torgeir. (2020) Dynamic Behaviour Comparison of a 10-MW Drivetrain in a Bottom-Fixed Monopile and a Spar Floating Wind Turbines. International Society of Offshore & Polar Engineers
  Academic chapter/article/Conference paper
• Wang, Shuaishuai; Rasekhi Nejad, Amir; Bachynski, Erin Elizabeth; Moan, Torgeir. (2020) Effects of bedplate flexibility on drivetrain dynamics: Case study of a 10 MW spar type floating wind turbine. Renewable Energy
  Academic article
• Rebouças, G. F. S.; Rasekhi Nejad, Amir. (2020) On Down-Scaled Modelling of Wind Turbine Drivetrains. Journal of Physics: Conference Series (JPCS)
  Academic article
• Khazaeli Moghadam, Farid; Rasekhi Nejad, Amir. (2020) Natural frequency estimation by using torsional response, and applications for wind turbine drivetrain fault diagnosis . Journal of Physics: Conference Series (JPCS)
  Academic article
• Lee, Chern Fong; Bachynski, Erin Elizabeth; Rasekhi Nejad, Amir. (2020) Consequences of load mitigation control strategies for a floating wind turbine. Journal of Physics: Conference Series (JPCS)
  Academic article

2019

• Wang, Shuaishuai; Rasekhi Nejad, Amir; Moan, Torgeir. (2019) On initial design and modelling of a 10 MW medium speed drivetrain for offshore wind turbines. Journal of Physics: Conference Series (JPCS)
  Academic article
• Johansen, Sigrid S.; Rasekhi Nejad, Amir. (2019) On Digital Twin Condition Monitoring Approach for Drivetrains in Marine Applications. The American Society of Mechanical Engineers (ASME)
  Academic chapter/article/Conference paper
• Khazaeli Moghadam, Farid; Rasekhi Nejad, Amir. (2019) Experimental Validation of Angular Velocity Measurements for Wind Turbines Drivetrain Condition Monitoring. The American Society of Mechanical Engineers (ASME)
  Academic chapter/article/Conference paper
• Rasekhi Nejad, Amir; Bachynski, Erin Elizabeth; Moan, Torgeir. (2019) Effect of axial acceleration on drivetrain responses in a spar-type floating wind turbine. Journal of Offshore Mechanics and Arctic Engineering
  Academic article
• Wang, Shuaishuai; Rasekhi Nejad, Amir; Moan, Torgeir. (2019) Design and Dynamic Analysis of a Compact 10 MW Medium Speed Gearbox for Offshore Wind Turbines. The American Society of Mechanical Engineers (ASME)
  Academic chapter/article/Conference paper
• Ibrion, Mihaela; Paltrinieri, Nicola; Rasekhi Nejad, Amir. (2019) On Disaster Risk Reduction in Norwegian Oil and Gas Industry Through Life-Cycle Perspective. The American Society of Mechanical Engineers (ASME)
  Academic chapter/article/Conference paper
• Ibrion, Mihaela; Paltrinieri, Nicola; Rasekhi Nejad, Amir. (2019) On risk of digital twin implementation in marine industry: Learning from aviation industry. Journal of Physics: Conference Series (JPCS)
  Academic article
• Rasekhi Nejad, Amir; Aoyanagi, Yuriko; Ibrion, Mihaela. (2019) Team and Research Based Learning Methods Applied in Multidisciplinary Marine Engineering Education. Journal of Physics: Conference Series (JPCS)
  Academic article
• Balestra, Lorenzo; Rasekhi Nejad, Amir; Naldi, Giovanni. (2019) On Design and Analysis of a Drivetrain Test Rig for Wind Turbine Health Monitoring. The American Society of Mechanical Engineers (ASME)
  Academic chapter/article/Conference paper

2018

• Ghane, Mahdi; Nejad, Amir Rasekhi; Blanke, Mogens; Gao, Zhen; Moan, Torgeir. (2018) Condition monitoring of spar‐type floating wind turbine drivetrain using statistical fault diagnosis. Wind Energy
  Academic article
• Moan, Torgeir; Nejad, Amir Rasekhi. (2018) Proceedings of the 3rd Offshore Structural Reliability Conference (OSRC2016). Norges teknisk-naturvitenskapelige universitet Norges teknisk-naturvitenskapelige universitet
  Academic anthology/Conference proceedings
• Rasekhi Nejad, Amir; Li, Lin; Guachamin Acero, Wilson Ivan; Moan, Torgeir. (2018) A Systematic Design Approach of Gripper’s Hydraulic System Utilized in Offshore Wind Turbine Monopile Installation. The American Society of Mechanical Engineers (ASME)
  Academic chapter/article/Conference paper
• Nejad, Amir Rasekhi. (2018) Modelling and Analysis of Drivetrains in Offshore Wind Turbines. John Wiley & Sons
  Academic chapter/article/Conference paper
• Nejad, Amir Rasekhi; Odgaard, Peter Fogh; Moan, Torgeir. (2018) Conceptual study of a gearbox fault detection method applied on a 5‐MW spar‐type floating wind turbine. Wind Energy
  Academic article
• Torsvik, Jone; Nejad, Amir Rasekhi; Pedersen, Eilif. (2018) Main bearings in large offshore wind turbines: development trends, design and analysis requirements. Journal of Physics: Conference Series (JPCS)
  Academic article

2017

• Rasekhi Nejad, Amir; Moan, Torgeir. (2017) On model-based system approach for health monitoring of drivetrains in floating wind turbines. Procedia Engineering
  Academic article
• Nejad, Amir Rasekhi; Bachynski, Erin Elizabeth; Moan, Torgeir. (2017) On Tower Top Axial Acceleration and Drivetrain Responses in a Spar-Type Floating Wind Turbine. The American Society of Mechanical Engineers (ASME)
  Academic chapter/article/Conference paper
• Ghane, Mahdi; Nejad, Amir Rasekhi; Blanke, Mogens; Gao, Zhen; Moan, Torgeir. (2017) Diagnostic monitoring of drivetrain in a 5 MW spar-type floating wind turbine using Hilbert spectral analysis. Energy Procedia
  Academic article

2016

• Rasekhi Nejad, Amir; Bachynski, Erin Elizabeth; Li, Lin; Moan, Torgeir. (2016) Correlation between Acceleration and Drivetrain Load Effects for Monopile Offshore Wind Turbines. Energy Procedia
  Academic article
• Rasekhi Nejad, Amir; Jiang, Zhiyu; Gao, Zhen; Moan, Torgeir. (2016) Drivetrain load effects in a 5-MW bottom-fixed wind turbine under blade-pitch fault condition and emergency shutdown. Journal of Physics: Conference Series (JPCS)
  Academic article
• Ghane, Mahdi; Rasekhi Nejad, Amir; Blanke, Mogens; Gao, Zhen; Moan, Torgeir. (2016) Statistical fault diagnosis of wind turbine drivetrain applied to a 5MW floating wind turbine. Journal of Physics: Conference Series (JPCS)
  Academic article
• Rasekhi Nejad, Amir; Guo, Yi; Gao, Zhen; Moan, Torgeir. (2016) Development of a 5 MW reference gearbox for offshore wind turbines. Wind Energy
  Academic article

2015

• Rasekhi Nejad, Amir; Xing, Yihan; Guo, Yi; Keller, Jonathan; Gao, Zhen; Moan, Torgeir. (2015) Effects of floating sun gear in a wind turbine’s planetary gearbox with geometrical imperfections. Wind Energy
  Academic article
• Rasekhi Nejad, Amir. (2015) Dynamic analysis and design of gearboxes in offshore wind turbines in a structural reliability perspective. Norges teknisk-naturvitenskapelige universitet Doktoravhandlinger ved NTNU (191)
  Doctoral dissertation
• Rasekhi Nejad, Amir; Bachynski, Erin Elizabeth; Gao, Zhen; Moan, Torgeir. (2015) Fatigue Damage Comparison of Mechanical Components in a Land-based and a Spar Floating Wind Turbine. Procedia Engineering
  Academic article
• Rasekhi Nejad, Amir; Bachynski, Erin Elizabeth; Kvittem, Marit Irene; Luan, Chenyu; Gao, Zhen; Moan, Torgeir. (2015) Stochastic dynamic load effect and fatigue damage analysis of drivetrains in land-based and TLP, spar and semi-submersible floating wind turbines. Marine Structures
  Academic article
• Guo, Yi; Keller, Jonathan; LaCava, William; Austin, Jason; Rasekhi Nejad, Amir; Halse, Chris. (2015) Recommendations on Model Fidelity for Wind Turbine Gearbox Simulations. National Renewable Energy Laboratory
  Report

2014

• Rasekhi Nejad, Amir; Odgaard, Peter Fogh; Gao, Zhen; Moan, Torgeir. (2014) A prognostic method for fault detection in wind turbine drivetrains. Engineering Failure Analysis
  Academic article
• Odgaard, Peter Fogh; Rasekhi Nejad, Amir. (2014) Frequency based Wind Turbine Gearbox Fault Detection applied to a 750 kW Wind Turbine. Proceedings of the IEEE Conference on Control Applications
  Academic article
• Rasekhi Nejad, Amir; Gao, Zhen; Moan, Torgeir. (2014) Fatigue Reliability-Based Inspection and Maintenance Planning of Gearbox Components in Wind Turbine Drivetrains. Energy Procedia
  Academic article
• Rasekhi Nejad, Amir; Gao, Zhen; Moan, Torgeir. (2014) On long-term fatigue damage and reliability analysis of gears under wind loads in offshore wind turbine drivetrains. International Journal of Fatigue
  Academic article

2013

• Rasekhi Nejad, Amir; Gao, Zhen; Moan, Torgeir. (2013) Long-term Analysis of Gear Loads in Fixed Offshore Wind Turbines Considering Ultimate Operational Loadings. Energy Procedia
  Academic article

2012

• Nejad, Amir R; Xing, Yihan; Moan, Torgeir. (2012) Gear Train Internal Dynamics in Large Offshore Wind Turbines. The American Society of Mechanical Engineers (ASME)
  Academic chapter/article/Conference paper