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Ocean Energy Conversion and Magnetohydrodynamic Power Systems

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "A3: Wind, Wave and Tidal Energy".

Deadline for manuscript submissions: 9 February 2025 | Viewed by 1184

Special Issue Editors


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Guest Editor
Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190,China
Interests: wave energy conversion; MHD conversion; LMMHD generator; electric machines; electromagnetic field; MHD propulsion

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Guest Editor
Electronic and Electrical Engineering Department, Brunel University London, London UB8 3PH, UK
Interests: lighting applications; power quality problems in power systems; grid integration of (marine) renewable energy; design; performance analysis; and cost benefit analysis of (marine) renewable energy systems; energy management; energy systems; smart grids
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Special Issue Information

Dear Colleagues,

Climate change is the biggest challenge faced by our planet today. Governments and businesses are accelerating efforts to secure net-zero CO2 emissions by 2050 and replace fossil fuels. With the ocean covering more than 70% of the Earth, ocean energy is an enormous clean, renewable resource. Harnessing the power of ocean energy can ensure global energy security and achieve targets of global clean energy generation and CO2 reduction. This has promoted the development of ocean energy conversion technologies. At the same time, the acceleration of ocean energy converters has contributed to advances in electric generator technologies. Magnetohydrodynamic (MHD) power generation is a relatively new and direct technology. MHD generators have no mechanical movement or rotating components, start quickly, and are highly efficient across a wide range of operating conditions. They are particularly suitable for situations that require high efficiency, high reliability, and a long service life, as well as situations where the input power and/or load change dramatically.

This Special Issue aims to present and disseminate the most recent advances relating to the concept, theory, design, modelling, application, control, offshore deployment, life cycle assessment, and economic analysis of all types of ocean energy conversion and MHD power systems.

Topics of interest include, but are not limited to the following:

  • All types of ocean energy conversion, such as tidal, wave, current, thermal energy, salinity gradient energy, and so on;
  • Marine wind–solar–wave/wind–wave complementary power generation;
  • Arrays/farms of ocean energy converters;
  • MHD generators for ocean energy conversion and other applications;
  • Other marine energy developments and utilizations;
  • Marine MHD propulsion;
  • Power conversion and control of ocean energy power generators.

Dr. Lingzhi Zhao
Dr. Ahmed F. Zobaa
Guest Editors

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Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • ocean energy conversion
  • magnetohydrodynamic/MHD power generation
  • control
  • maximum power tracking
  • array
  • design
  • modelling
  • life cycle assessment
  • economic analysis
  • application
  • offshore deployment
  • power conversion
  • LMMHD
  • MHD

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Published Papers (2 papers)

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Research

23 pages, 10878 KiB  
Article
Simulation and Experiments on Optimization of Vortex-Induced Vibration Power Generation System Based on Side-by-Side Double Blunt Bodies
by Liguo Fan, Guoqiang Liu, Xianjin Song, Ce Xiang, Jiacheng Wei and Hui Xia
Energies 2024, 17(21), 5291; https://doi.org/10.3390/en17215291 - 24 Oct 2024
Viewed by 388
Abstract
In order to improve the utilization efficiency of converting low-flow current energy into electric energy for Reynolds number 10,000 ≤ Re ≤ 40,000, this paper proposes a vortex-induced vibration power generation system based on a side-by-side double blunt body. In this system, the [...] Read more.
In order to improve the utilization efficiency of converting low-flow current energy into electric energy for Reynolds number 10,000 ≤ Re ≤ 40,000, this paper proposes a vortex-induced vibration power generation system based on a side-by-side double blunt body. In this system, the side-by-side double blunt body structure is used in the current energy capture part to enhance the collection of low-flow current energy; the permanent magnet linear motor is used in the electric energy conversion part to improve the efficiency of electric energy conversion; and a laboratory device is constructed for testing. The effects of the blunt body structure parameters and the center spacing ratio on the energy harvesting performance of the system are qualitatively explained by constructing a simulation model. Compared with the single blunt body energy capture structure, the side-by-side double blunt body structure increases the vibration amplitude by 1.04 times and the lift by 1.14 times at the center spacing S/D = 2.4. Meanwhile, energy harvesting can be realized at a lower flow velocity, increasing the vortex-induced vibration’s energy capture range. Finally, the power generation system was experimentally verified in the laboratory, and the results showed that the vibration amplitude of the double blunt body structure was increased by 1.12 times compared to the single blunt body. The maximum output power of the generator is 10.55 W when the water velocity is 0.7 m/s. The energy conversion efficiency of the power generation system can reach a maximum of 52.93%, which is 12.33% higher than that of a single blunt body structure, which proves that the system has a higher power conversion efficiency than that of a conventional single conversion system. Full article
(This article belongs to the Special Issue Ocean Energy Conversion and Magnetohydrodynamic Power Systems)
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13 pages, 3417 KiB  
Article
Impact of Steep Seabed Terrains on Oscillating Buoy-Wave Energy-Converter Performance
by Zhenpeng Wang, Changqi Lv, Songwei Sheng, Min Chen, Xianyuan Yang and Wensheng Wang
Energies 2024, 17(17), 4280; https://doi.org/10.3390/en17174280 - 27 Aug 2024
Viewed by 460
Abstract
This paper employs Computational Fluid Dynamics (CFD) methods to develop a numerical model of an oscillating buoy-wave energy converter and investigates the impact of steep seabed topography near islands and reefs on its performance. The model’s accuracy is validated by comparison with experimental [...] Read more.
This paper employs Computational Fluid Dynamics (CFD) methods to develop a numerical model of an oscillating buoy-wave energy converter and investigates the impact of steep seabed topography near islands and reefs on its performance. The model’s accuracy is validated by comparison with experimental results from the published literature. Subsequently, the influence of deployment location, reef-front slope gradient, and reef-flat water depth on the device’s performance is analyzed. The results indicate that the strategic utilization of steep seabed topography can significantly enhance the energy capture efficiency of the device in long-wave regions. This study provides valuable references for the design and deployment of oscillating buoy-wave energy converters in near-reef areas. Full article
(This article belongs to the Special Issue Ocean Energy Conversion and Magnetohydrodynamic Power Systems)
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