Stabilization of power output and platform motion of a floating offshore wind turbine-generator system using model predictive control based on previewed disturbances
Autor: | Ryohei Yokoyama, Tetsuya Wakui, Atsushi Nagamura |
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Rok vydání: | 2021 |
Předmět: |
060102 archaeology
Renewable Energy Sustainability and the Environment Rotor (electric) Computer science 020209 energy Internal model Floating wind turbine 06 humanities and the arts 02 engineering and technology Turbine Wind speed law.invention Model predictive control Offshore wind power Control theory law Wave height 0202 electrical engineering electronic engineering information engineering 0601 history and archaeology Physics::Atmospheric and Oceanic Physics |
Zdroj: | Renewable Energy. 173:105-127 |
ISSN: | 0960-1481 |
Popis: | Model predictive control of a floating offshore wind turbine-generator system, in which wave height as well as inflow wind speed is regarded as the previewed disturbances, is developed to stabilize power output and platform motion and reduce dynamic loads at mechanical and supporting components at high wind speeds. First, the internal model to predict dynamic control behaviors to previewed disturbances is identified from an aero-elastic-hydro-control coupled simulation result, in which pseudorandom binary sequence signals are added to the manipulated variables calculated in a gain-scheduling feedback controller of the generator speed to satisfy a persistently exciting condition. Second, an aero-elastic-hydro-control coupled simulation using the developed model predictive control is performed for a 5-MW floating offshore wind turbine-generator system. The identified internal model has a high prediction accuracy of the system outputs by regarding the spatial mean wind speed in the swept area of the wind turbine as a rotor effective wind speed. The simulation results under turbulent wind fields and irregular wave height variations reveal that the stabilization of the power output and platform motion and the dynamic load reduction are achieved by employing the developed model predictive control with a perfect preview of the wind speed and wave height. |
Databáze: | OpenAIRE |
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