Operating Cycle Optimization for a Magnus Effect-based Airborne Wind Energy System
Energy Conversion and Management, Vol. 90, pp. 154-1652015The paper presents a control variables optimization study for an airborne wind energy production system. The system comprises an airborne module in the form of a buoyant, rotating cylinder, whose rotation in a wind stream induces the Magnus effect-based aerodynamic lift. Through a tether, the airborne module first drives the generator fixed on the ground, and then the generator becomes a motor that lowers the airborne module. The optimization is aimed at maximizing the average power produced at the generator during a continuously repeatable operating cycle. The control variables are the generator-side rope force and the cylinder rotation speed. The optimization is based on a multi-phase problem formulation, where operation is divided into ascending and descending phases, with free boundary conditions and free cycle duration. The presented simulation results show that significant power increase can be achieved by using the obtained optimal operating cycle instead of the initial, empirically based operation control strategy. A brief analysis is also given to provide a physical interpretation of the optimal cycle results. airborne wind energy; Magnus effect; optimal control; produced energy maximization; energy production analysis
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Energy Conversion and Management, Vol. 90, pp. 154-165
2015
Cited by 40
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[4] Design and Performance Evaluation of a Mid-Range Airborne Wind Turbine🔗The Arabian journal for science and engineering, 2024
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[5] Fully-passive tethered flapping airfoil to harvest high-altitude wind energy🔗Energy Conversion and Management, 2022
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[6] Computational Simulation Methods for the Magnus Lift - Driven Wind Turbines🔗International Journal of Engineering and Advanced Technology, 2022
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[7] Aerodynamic comparison of slotted and non-slotted diffuser casings for Diffuser Augmented Wind Turbines (DAWT)🔗Renewable & Sustainable Energy Reviews, 2022
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[8] Power conversion performance of airborne wind turbine under unsteady loads🔗Renewable & Sustainable Energy Reviews, 2022
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[10] Wind assisted propulsion system onboard ships: case study Flettner rotors🔗Ships and Offshore Structures, 2021
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[14] Magnus Wind Turbine: Finite Element Analysis and Control System🔗International Symposium on Power Electronics, Electrical Drives, Automation and Motion, 2020
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[17] Experimental Prototype of High-Efficiency Wind Turbine Based on Magnus Effect🔗2020 27th International Workshop on Electric Drives: MPEI Department of Electric Drives 90th Anniversary (IWED), 2020
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[19] Application of magnus effect and lift blade in high altitude wind power🔗IOP Conference Series: Earth and Environment, 2019
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[21] Power Curve Analysis Of On-ground Airborne Wind Energy Systems🔗International Conference on Industrial Technology, 2019
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[22] Aerodynamic analysis of an airborne wind turbine with three different aerofoil-based buoyant shells using steady RANS simulations🔗Energy Conversion and Management, 2018
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[24] In-flight estimation of the aerodynamic characteristics of a Magnus effect-based airborne wind energy system🔗2018 4th International Conference on Renewable Energies for Developing Countries (REDEC), 2018
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[31] Analytical Evaluation of Solar Enhanced Magnus Effect Wind Turbine Concept🔗International Journal of Renewable Energy Research, 2016
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[33] Control of an airborne wind energy system with a Magnus effect🔗American Control Conference, 2016