Blar i NTNU Open på forfatter "Mehlan, Felix Christian"
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Digital twin based virtual sensor for online fatigue damage monitoring in offshore wind turbine drivetrains
Mehlan, Felix Christian; Nejad, Amir R.; Gao, Zhen (Peer reviewed; Journal article, 2022)In this article a virtual sensor for online load monitoring and subsequent remaining useful life (RUL) assessment of wind turbine gearbox bearings is presented. Utilizing a Digital Twin framework the virtual sensor combines ... -
Digital Twins for Fault Prognosis in Offshore Wind Turbine Drivetrains
Mehlan, Felix Christian (Doctoral theses at NTNU;2024:178, Doctoral thesis, 2024)This thesis investigates the relatively novel concept of Digital Twin (DT) in the context of offshore wind turbine drivetrains. DT can be described as a virtual representation of a system or asset that calculates system ... -
Estimation of Wind Turbine Gearbox Loads for Online Fatigue Monitoring Using Inverse Methods
Mehlan, Felix Christian; Nejad, Amir R.; Gao, Zhen (Chapter, 2021)In this article a novel approach for the estimation of wind turbine gearbox loads with the purpose of online fatigue damage monitoring is presented. The proposed method employs a Digital Twin framework and aims at continuous ... -
Modelling of wind turbine gear stages for Digital Twin and real-time virtual sensing using bond graphs
Mehlan, Felix Christian; Pedersen, Eilif; Nejad, Amir R. (Peer reviewed; Journal article, 2022)In this paper a wind turbine high-speed gear stage model is developed for the purpose of real-time virtual sensing of gear and bearing loads in a Digital Twin framework. The model requirements are: accurate representation ... -
Rotor imbalance detection and diagnosis in floating wind turbines by means of drivetrain condition monitoring
Mehlan, Felix Christian; Nejad, Amir R. (Peer reviewed; Journal article, 2023)This paper presents a novel approach for detection and diagnosis of the rotor imbalance types pitch misalignment, yaw misalignment and mass imbalance by monitoring the drivetrain vibration response. Traditionally, only ...