Optimal configurations of wave energy converter arrays with a floating body

• Autorzy: Zhang W. , Liu H. , Zhang X. , Zhang L. , Ashraf M. A.
• Języki publikacji: EN

Abstrakty

EN

An array of floating point-absorbing wave energy converters (WECs) is usually employed for extracting efficiently ocean wave energy. For deep water environment, it is more feasible and convenient to connect the absorbers array with a floating body, such as a semi-submersible bottom-moored disk, whose function is to act as the virtual seabed. In the present work, an array of identical floating symmetrically distributed cylinders in a coaxial moored disk as a wave energy device is proposed The power take-off (PTO) system in the wave energy device is assumed to be composed of a linear/nonlinear damper activated by the buoys heaving motion. Hydrodynamic analysis of the examined floating system is implemented in frequency domain. Hydrodynamic interferences between the oscillating bodies are accounted for in the corresponding coupled equations. The array layouts under the constraint of the disk, incidence wave directions, separating distance between the absorbers and the PTO damping are considered to optimize this kind of WECs. Numerical results with regular waves are presented and discussed for the axisymmetric system utilizing heave mode with these interaction factors, in terms of a specific numbers of cylinders and expected power production.

Słowa kluczowe

EN

wave energy; cylinder array; power take-off; hydrodynamic analysis

• Wydawca: Gdańsk University of Technology, Faculty of Ocean Engineering & Ship Technology
• Czasopismo: Polish Maritime Research
• Rocznik: 2016
• Tom: S 1
• Strony: 71--77
• Opis fizyczny: Bibliogr. 21 poz., rys., tab.

Twórcy

autor

Zhang W.

• College of Shipbuilding Engineering, Harbin Engineering University, Harbin,China

autor

Liu H.

• College of Shipbuilding Engineering, Harbin Engineering University, Harbin,China

autor

Zhang X.

• College of Shipbuilding Engineering, Harbin Engineering University, Harbin,China

autor

Zhang L.

• College of Shipbuilding Engineering, Harbin Engineering University, Harbin,China

autor

Ashraf M. A.

• Faculty of Science and Natural Resources, University Malaysia Sabah 88400 Kota Kinabalu Sabah, Malaysia

Bibliografia

• 1. Budal K (1977). Theory for absorption of wave power by a system of interacting bodies. Journal of Ship Research, 21:248-253.
• 2. Falnes J, Budal K (1982). Wave-power absorption by parallel rows of interacting oscillating bodies. Applied Ocean Research, 4:194-207.
• 3. McIver P (1994). Some hydrodynamic aspects of arrays of wave energy devices. Applied Ocean Research, 19:283-291.
• 4. Fitzgerald C, Thomas G (2007). A preliminary study on the optimal formation of an array of wave power devices. In: Proceedings of the 7th European Wave and Tidal Energy Conference, Porto, Portugal.
• 5. Garnaud X, Mei CC (2010). Comparison of wave power extraction by a compact array of small buoys and by a large buoy. IET Renewable Power Generation.4 (6):519-530.
• 6. Weller SD, Stallard TJ, Stansby PK (2010). Experimental measurements of irregular wave interaction factors in closely spaced arrays. IET Renewable Power Generation.4 (6):628-637.
• 7. Child BFM, Venugopal V (2010). Optimal configurations of wave energy device arrays. Ocean Engineering, 37:1402-1417.
• 8. Babarit A (2010). Impact of long separating distances on the energy production of two interacting wave energy converters. Ocean Engineering, 37:718-729.
• 9. Borgarino B, Babarit A, Ferrant P (2012). Impact of wave interactions effects on energy absorption in large arrays of wave energy converters. Ocean Engineering, 41:79-88.
• 10. Wolgamot HA, Taylor PH, Taylor RE (2012). The interaction factor and directionality in wave energy arrays. Ocean Engineering, 47:65-73.
• 11. Heikkinen H, Lampinen MJ, Boling J (2013), Analytical study of the interaction between waves and cylindrical wave energy converters oscillating in two modes. Renewable Energy, 50:150-160.
• 12. Sharkey F, Bannon E, Conlon M, Gaughan K (2013), Maximising value of electrical networks for wave energy converter arrays. International Journal of Marine Energy, 1:55-69.
• 13. Goteman M, Engstrom J, Eriksson M, Isberg J, Leijon M (2014). Analytical and numerical approaches to optimizing fluid-structure interactions in wave energy parks. Iwwwfb. naoe.eng.osaka.
• 14. Andres AD, Guanche R, Meneses L, Vidal C, Losada IJ (2014). Factors that influence array layout on wave energy farms. Ocean Engineering, 82:32-41.
• 15. Goteman M, Engstrom J, Eriksson M, Isberg J, Leijon M (2014). Methods of reducing power fluctuations in wave energy parks. Journal of Renewable and Sustainable Energy, 6: 043103.
• 16. Goteman M, Engstrom J, Eriksson M, Isberg J (2015). Optimizing wave energy parks with over 1000 interacting point-absorbers using an approximate analytical method. International Journal of Marine Energy, 10:113-126.
• 17. Konispoliatis DN, Mavrakos SA (2016). Hydrodynamic analysis of an array of interacting free-floating oscillating water column (OWC’s) devices. Ocean Engineering, 111:179-197.
• 18. Adnan, FAF; Hamylton, SM; Woodroffe, CD (2016). SurfSwash Interactions on a Low-Tide Terraced Beach, Journal of Coastal Research, SI75: 348-352.
• 19. Sheng WN, Alcorn R, Lewis A (2015). Optimising power take-offs for maximizing wave energy conversions. In: the 30th International Workshop on Water Waves and Floating Bodies, Bristol, UK.
• 20. Jakubowski, M (2015). Influence of pitting corrosion on fatigue and corrosion fatigue of ship and offshore structures, part II: load - PIT -crack interaction. Polish Maritime Research, 22(3): 57-66.
• 21. Sheng WN, Lewis A (2016). Power takeoff optimization for maximizing energy conversion of wave-activated bodies. IEEE Journal of Oceanic Engineering, 2016:1-12.