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Advanced control of large-scale wind turbines: Structural load reduction and lifetime control
Global warming is a major consequence of high carbon dioxide emissions due to the burning of fossil fuels. In addition, the use of fossil fuels also emits mercury, sulfur dioxide, nitrogen oxides, and particulate matter into the air and water leading to many health problems. These factors in combination with the depletion of fossil fuel motivate the requirement for low-carbon and renewable energy sources. Wind energy takes an important role in the transformation of the global energy system towards clean and sustainable sources. The main development of wind energy technology in recent decades is the growth of Wind Turbine (WT) size motivated by economic factors. The larger turbine size helps to increase power output and energy efficiency, however, it leads to challenges in wind turbine operation and maintenance. Larger and more flexible turbines experience higher mechanical stress on the turbine components such as gearboxes, blades, and towers. These structural loads may lead to early failure limiting the turbine size and performances. To further reduce the cost of wind energy, advanced control approaches are developed focusing on power maximization, structural load mitigation, lifetime extension, and reliability improvement ultimately reduce the cost of wind energy. This multi-objective problem is difficult to solve due to design conflicts. The optimal trade-off between goals is varying and depends on actual operating situations such as on-site wind characteristics, system aging, and grid requirements. Advanced control approaches are applied for utility-scale WTs to maximize power production and reduce structural loads. When the structural loads are considered, wind turbines become Multi-Input Multi-Output (MIMO) systems. Because of the coupling between control inputs and outputs, traditional Single-Input Single-Output (SISO) controllers are difficult to design and not suitable for such systems. Multi-input multi-output control approaches consider system internal connections so they can realize multiple ...
Advanced control of large-scale wind turbines: Structural load reduction and lifetime control
Global warming is a major consequence of high carbon dioxide emissions due to the burning of fossil fuels. In addition, the use of fossil fuels also emits mercury, sulfur dioxide, nitrogen oxides, and particulate matter into the air and water leading to many health problems. These factors in combination with the depletion of fossil fuel motivate the requirement for low-carbon and renewable energy sources. Wind energy takes an important role in the transformation of the global energy system towards clean and sustainable sources. The main development of wind energy technology in recent decades is the growth of Wind Turbine (WT) size motivated by economic factors. The larger turbine size helps to increase power output and energy efficiency, however, it leads to challenges in wind turbine operation and maintenance. Larger and more flexible turbines experience higher mechanical stress on the turbine components such as gearboxes, blades, and towers. These structural loads may lead to early failure limiting the turbine size and performances. To further reduce the cost of wind energy, advanced control approaches are developed focusing on power maximization, structural load mitigation, lifetime extension, and reliability improvement ultimately reduce the cost of wind energy. This multi-objective problem is difficult to solve due to design conflicts. The optimal trade-off between goals is varying and depends on actual operating situations such as on-site wind characteristics, system aging, and grid requirements. Advanced control approaches are applied for utility-scale WTs to maximize power production and reduce structural loads. When the structural loads are considered, wind turbines become Multi-Input Multi-Output (MIMO) systems. Because of the coupling between control inputs and outputs, traditional Single-Input Single-Output (SISO) controllers are difficult to design and not suitable for such systems. Multi-input multi-output control approaches consider system internal connections so they can realize multiple ...
Advanced control of large-scale wind turbines: Structural load reduction and lifetime control
Do, Manh Hung (Autor:in) / Söffker, Dirk
10.12.2020
Hochschulschrift
Elektronische Ressource
Englisch
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