Array Characteristics of Oscillating-Buoy Two-Floating-Body Wave-Energy Converter
- 95 Downloads
As the energy supply problem worsens, the development and utilization of marine renewable energy have become a research hotspot. The development of wave energy is moving from the near shore to the distant sea. The power-generation efficiency of a single two-floating-body wave-energy converter is relatively low. To fully utilize wave energy and improve the wave-energy capture rate of a fixed sea area, arranging a two-floating-body wave-energy converter array is necessary. This paper first introduces the basic theory of multi-floating flow field, time-domain calculation method, and influence factor of the wave-energy converter array. Then, the development of AQWA software in Fortran language considers the effect of power takeoff. A calculation method based on ANSYS–AQWA is proposed to simulate the motion of the oscillating-buoy two-floating-body wave-energy converter. The results are compared with the experimental results from the National Renewable Energy Laboratory. Finally, the ANSYS–AQWA method is used to study the power characteristics of simple and complex arrays of wave-energy converters. The average power generation of simple arrays is largest at 0°, and the average power generation of complex arrays does not change with the wave direction. Optimal layout spacing exists for the simple and complex arrays. These findings can serve as a valuable reference for the large-scale array layout of wave-energy converters in the future.
KeywordsOscillating buoy Two-floating body Wave-energy converter AQWA Converter array Power characteristics
Foundation item: Supported by the National Natural Science Foundation of China under Grant Nos. 5171101175, 11572094, 51809083, and 51579055.
- Chen X (2013) Time-domain simulation of the motion response of FPSO in waves. Master thesis, Harbin Institute of Technology, Harbin, 32-50Google Scholar
- Child BFM (2011) On the configuration of arrays of floating wave energy converters. PhD thesis, University of Edinburgh, EdinburghGoogle Scholar
- Dai YM (2015) Research on a floating type double floating wave power generation device. Master thesis, South China University of Technology, Guangzhou, 28–65Google Scholar
- Evans DV (1979) Some theoretical aspects of three-dimensional wave-energy absorbers. Proceedings of the First Symposium on Wave Energy Utilization, Chalmers University of Technology, Gothenburg, Sweden, 77–106Google Scholar
- Guan Y (2011) Feasibility study on the development and utilization of wave energy in China. Master thesis, Ocean University of China, Qingdao, 10–30. DOI: https://doi.org/10.7666/d.d169536
- Li JY, He HZ (2013) A review of the technical research on wave energy acquisition device. Ocean Development and Management 30(10):67–71. https://doi.org/10.3969/j.issn.1005-9857.2013.10.014 Google Scholar
- Teng B, Zhao MZ, Jiang SC, Gou Y, Lv L (2010) Calculation and analysis of hydrodynamic coefficient of spar platform heave plate. Ocean Eng 28(3):1–8. https://doi.org/10.3969/j.issn.1005-9865.2010.03.001 Google Scholar
- Zhang XT (2015) Hydrodynamic study of oscillating floating wave energy generator. Master thesis, Shanghai Jiao Tong University, Shanghai, pp 26–45Google Scholar
- Zhang L, Dai YS (1992) Time-domain solution to the diffraction problem of objects sailing near the surface. Shipbuilding of China 33(4):1–14Google Scholar
- Zhao SM, Liu FY, Zhang JH, Zhang ZH, Bai Y, Zhang R (2008) Basic thinking of China’s marine energy development and utilization strategy research. Ocean Technol 27(3):80–83Google Scholar