Design, construction and ocean testing of wave energy conversion system with permanent magnet tubular linear generator

Abstract

In this paper, the design, construction and ocean testing of a wave energy conversion system are studied. Based on the motion characteristics of double buoys in ocean waves, a wave energy conversion system with permanent magnet tubular linear generator (PMTLG) is proposed to convert ocean wave energy into electricity. The wave energy conversion system was installed in the Yellow Sea near Lianyungang, China. The ocean test results indicate that it had dynamic and static performance, and obtained an expected amount of electricity. The calculation result indicates the average output power was about 1,000,W, and the conversion efficiency from wave energy into electricity was 1.4%,. In addition, the wireless data communication, mechanics and oceanography were also discussed.

Keywords

ocean wave energy / buoy / permanent magnet tubular linear generator / electricity

References

[1] Drew B, Plummer A R, Sahinkaya M N. A review of wave energy converter technology [J]. Proceedings of the Institution of Mechanical Engineers Part A: Journal of Power and Energy, 2009, 223: 887-902.

[2] Falnes J. A review of wave-energy extraction [J]. Marine Structures, 2007, 20(4): 185-201.

[3] Vantorre M, Banasiak R, Verhoeven R. Modelling of hydraulic performance and wave energy extraction by a point absorber in heave [J]. Applied Ocean Research, 2004, 26(1/2): 61-72.

[4] Leijon M, Danielsson O, Eriksson M, et al. An electrical approach to wave energy conversion [J]. Renewable Energy, 2006, 31(9): 1309-1319.

[5] Zabihian F, Fung A S. Review of marine renewable energies: Case study of Iran [J]. Renewable and Sustainable Energy Reviews, 2011, 15(5): 2461-2474.

[6] Lin L, Yu H T. Offshore wave energy generation devices: Impacts on ocean bio-environment [J]. Acta Ecologica Sinica, 2012, 32(3): 117-122.

[7] Ren J L, Zhong Y J, Zhang X M, et al. State of arts and prospects in the power generation from oceanic wave [J]. Journal of Zhejiang University of Technology, 2006, 34(1): 69-73.

[8] National Bureau of Statistics of China. China Energy Statistical Yearbook 2008 [M], 2008, Beijing, China: China Statistic Press.

[9] Wang S J, Yuan P, Li D, et al. An overview of ocean renewable energy in China [J]. Renewable and Sustainable Energy Reviews, 2011, 15(1): 91-111.

[10] Falnes J. Ocean Waves and Oscillating Systems [M], 2002, Cambridge: Cambridge University Press

[11] Dai Y S. Potential Flow Theory of Ship Motions in Waves in Frequency and Time Domain [M], 1998, Beijing, China: National Defense Industry Press.

[12] Bhatta D D. Computation of added mass and damping coefficients due to a heaving cylinder [J]. Journal of Applied Mathematics and Informatics, 2007, 23(1): 127-140.

[13] Yeung R W. Added mass and damping of a vertical cylinder in finite-depth waters [J]. Applied Ocean Research, 1981, 3(3): 119-133.

[14] Zhang F J, Lin S Q. Wave characteristics in sea area near Lian Yun Port [J]. Coastal Engineering, 1983, 2(1): 15-25.