Articles | Volume 9, issue 1
https://doi.org/10.5194/wes-9-281-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/wes-9-281-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Optimal position and distribution mode for on-site hydrogen electrolyzers in onshore wind farms for a minimal levelized cost of hydrogen (LCoH)
Thorsten Reichartz
CORRESPONDING AUTHOR
Chair for Wind Power Drives, RWTH Aachen University, 52074 Aachen, Germany
Georg Jacobs
Chair for Wind Power Drives, RWTH Aachen University, 52074 Aachen, Germany
Tom Rathmes
Chair for Wind Power Drives, RWTH Aachen University, 52074 Aachen, Germany
Lucas Blickwedel
Chair for Wind Power Drives, RWTH Aachen University, 52074 Aachen, Germany
Ralf Schelenz
Chair for Wind Power Drives, RWTH Aachen University, 52074 Aachen, Germany
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Amir R. Nejad, Jonathan Keller, Yi Guo, Shawn Sheng, Henk Polinder, Simon Watson, Jianning Dong, Zian Qin, Amir Ebrahimi, Ralf Schelenz, Francisco Gutiérrez Guzmán, Daniel Cornel, Reza Golafshan, Georg Jacobs, Bart Blockmans, Jelle Bosmans, Bert Pluymers, James Carroll, Sofia Koukoura, Edward Hart, Alasdair McDonald, Anand Natarajan, Jone Torsvik, Farid K. Moghadam, Pieter-Jan Daems, Timothy Verstraeten, Cédric Peeters, and Jan Helsen
Wind Energ. Sci., 7, 387–411, https://doi.org/10.5194/wes-7-387-2022, https://doi.org/10.5194/wes-7-387-2022, 2022
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This paper presents the state-of-the-art technologies and development trends of wind turbine drivetrains – the energy conversion systems transferring the kinetic energy of the wind to electrical energy – in different stages of their life cycle: design, manufacturing, installation, operation, lifetime extension, decommissioning and recycling. The main aim of this article is to review the drivetrain technology development as well as to identify future challenges and research gaps.
Freia Harzendorf, Ralf Schelenz, and Georg Jacobs
Wind Energ. Sci., 6, 571–584, https://doi.org/10.5194/wes-6-571-2021, https://doi.org/10.5194/wes-6-571-2021, 2021
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Making wind turbines more reliable over their lifetime is an important goal for improving wind turbine technology. The wind turbine drivetrain has a major influence on turbine reliability. This paper presents an approach that will help to identify holistically better drivetrain concepts in an early product design phase from an operational perspective as it is able to estimate and assess drivetrain-concept-specific inherent risks in the operational phase.
Christian Ingenhorst, Georg Jacobs, Laura Stößel, Ralf Schelenz, and Björn Juretzki
Wind Energ. Sci., 6, 427–440, https://doi.org/10.5194/wes-6-427-2021, https://doi.org/10.5194/wes-6-427-2021, 2021
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Wind farm sites in complex terrain are subject to local wind phenomena, which are difficult to quantify but have a huge impact on a wind turbine's annual energy production. Therefore, a wind sensor was applied on an unmanned aerial vehicle and validated against stationary wind sensors with good agreement. A measurement over complex terrain showed local deviations from the mean wind speed of approx. ± 30 %, indicating the importance of an extensive site evaluation to reduce investment risk.
Lucas Blickwedel, Freia Harzendorf, Ralf Schelenz, and Georg Jacobs
Wind Energ. Sci., 6, 177–190, https://doi.org/10.5194/wes-6-177-2021, https://doi.org/10.5194/wes-6-177-2021, 2021
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Revenues from the operation of wind turbines in Germany will be insecure in the future due to the expiration of federal support. Alternative ways of selling electricity are usually based on exchange prices. Therefore, the long-term revenue potential of wind turbines is assessed based on levelized revenue of energy (LROE), using a new forecasting model and open-source data. Results show how different expansion scenarios and emission prices may affect profitability of future plants.
Jonas Gnauert, Georg Jacobs, Stefan Kock, Dennis Bosse, and Benjamin Janik
J. Sens. Sens. Syst., 9, 239–249, https://doi.org/10.5194/jsss-9-239-2020, https://doi.org/10.5194/jsss-9-239-2020, 2020
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This paper covers the design study of a multicomponent transducer (MCT) for wind turbine test benches. The MCT will cover the characteristics of wind turbines in the power range of up to 6 MW. The motivation to develop a MCT such as this is to provide satisfying measurement accuracy of loads and moments for all 6 degrees of freedom in order to reduce the uncertainty in the traceability of the drive train behavior due to the applied loads.
Yasir Shkara, Martin Cardaun, Ralf Schelenz, and Georg Jacobs
Wind Energ. Sci., 5, 141–154, https://doi.org/10.5194/wes-5-141-2020, https://doi.org/10.5194/wes-5-141-2020, 2020
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A computational fluid dynamics (CFD) solver is coupled with a structure solver to predict the dynamic response of a horizontal axis wind turbine structure. CFD provides much more accurate and more realistic aerodynamic loads that cannot be achieved by traditional methods such as blade element momentum theory. As a result, the aeroelastic response of the wind turbine structure, taking into account blade–tower interactions, is described in more detail.
Laura Stößel, Esther Kohl, Björn Roscher, Ralf Schelenz, and Georg Jacobs
Wind Energ. Sci. Discuss., https://doi.org/10.5194/wes-2019-79, https://doi.org/10.5194/wes-2019-79, 2019
Preprint withdrawn
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The potential of power generation from biomass to cover the offset between local power demand and supply by solar and wind power is investigated. A model is introduced to simulate power production time series in 15-minute resolution from wind, PV and biomass. The analysis is conducted on the example of five exemplary rural municipalities, each representing one category of rural municipalities in Germany.
Related subject area
Thematic area: Electrical conversion, integration and impacts | Topic: Electrical conversion, grid integration, and Wind-to-X
Electrostatic discharge impacts on the main shaft bearings of wind turbines
A critical review of challenges and opportunities for effective design and operation of offshore structures supporting green hydrogen production, storage, and transport
Jian Zhao, Xiangdong Xu, and Ola Carlson
Wind Energ. Sci., 8, 1809–1819, https://doi.org/10.5194/wes-8-1809-2023, https://doi.org/10.5194/wes-8-1809-2023, 2023
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The wind turbine's main bearing and its replacement are extremely costly. However, the main bearing is found to be electrically burned after a few years of operation. In this paper, a new pattern of the breakdown mechanism, the bearing current induced by electrostatic discharge (ESD), is studied. The analysis and test results prove that the ESD effect in wind turbines is a non-negligible source of the main shaft bearing current in wind turbines.
Claudio A. Rodriguez, Baran Yeter, Shen Li, Feargal Brennan, and Maurizio Collu
Wind Energ. Sci. Discuss., https://doi.org/10.5194/wes-2023-143, https://doi.org/10.5194/wes-2023-143, 2023
Revised manuscript accepted for WES
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A detailed review of ocean renewable systems, with focus on offshore wind, for the offshore production of green fuels was conducted. Engineering tools and methodologies and their suitability for the design and operation of offshore H2 systems were reviewed. Distinct from wind electricity generation, the support platforms for offshore H2 systems involve additional requirements and constraints. Challenges and opportunities for the offshore H2 systems are discussed.
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Short summary
The production of green hydrogen from wind power is a promising approach to store energy from renewable energy sources. This work proposes a method to optimize the design of wind–hydrogen systems for onshore wind farms in order to achieve the lowest hydrogen cost. Therefore, the electrolyzer position and the optimal hydrogen transport mode are calculated specifically for a wind farm site. This results in a reduction of up to 10 % of the hydrogen production cost.
The production of green hydrogen from wind power is a promising approach to store energy from...
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