Browsing NTNU Open by Author "Cho, Seongpil"
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Fault detection and diagnosis of a blade pitch system in a floating wind turbine based on Kalman filters and artificial neural networks
Cho, Seongpil; Choi, Minjoo; Gao, Zhen; Moan, Torgeir (Peer reviewed; Journal article, 2021)This paper describes the development of a fault detection and diagnosis method to automatically identify different fault conditions of a hydraulic blade pitch system in a spar-type floating wind turbine. For fault detection, ... -
Model-based Fault Detection and Diagnosis of a Blade Pitch System in Floating Wind Turbines
Cho, Seongpil (Doctoral theses at NTNU;2020:40, Doctoral thesis, 2020)Offshore wind turbines operate in ocean environments with irregular waves and turbulent winds and experience technical faults during their service life. Faults and failures in their actuators, sensors, and system components ... -
Model-based fault detection of blade pitch system in floating wind turbines
Cho, Seongpil; Gao, Zhen; Moan, Torgeir (Journal article; Peer reviewed, 2016)This paper presents a model-based scheme for fault detection of a blade pitch system in floating wind turbines. A blade pitch system is one of the most critical components due to its effect on the operational safety and ... -
Model-based Fault Detection, Fault Isolation and Fault-tolerant Control of a Blade Pitch System in Floating Wind Turbines
Cho, Seongpil; Gao, Zhen; Moan, Torgeir (Journal article; Peer reviewed, 2018)This paper presents model-based fault detection, fault isolation, and fault-tolerant control schemes focused on blade pitch systems in floating wind turbines. Fault detection, isolation, and accommodation techniques are ... -
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
Cho, Seongpil; Bachynski, Erin Elizabeth; Rasekhi Nejad, Amir; Gao, Zhen; Moan, Torgeir (Peer reviewed; Journal article, 2020)This paper deals with numerical modeling of the hydraulic blade pitch actuator and its effect on the dynamic responses of a floating spar‐type wind turbine under valve fault conditions. A spar‐type floating wind turbine ...