Effect of the floating body shape and other composition on the hydrodynamic safety of floating photo-voltaic system

수상 태양광 발전 시스템의 부유체 형상과 구성요소가 수력학적 안전성에 미치는 영향

  • Choi, Ji-Woong (Interdisciplinary Program in Biohealth-machinery convergence engineering, Kangwon National University) ;
  • Lee, Gyu-Han (Interdisciplinary Program in Biohealth-machinery convergence engineering, Kangwon National University) ;
  • Kim, Jae Un (Soleco Co.) ;
  • Heo, Nam Wook (Soleco Co.) ;
  • Cha, Yong Hyun (Soleco Co.) ;
  • Ha, Hojin (Interdisciplinary Program in Biohealth-machinery convergence engineering, Kangwon National University)
  • Received : 2020.12.22
  • Accepted : 2021.03.04
  • Published : 2021.04.30


As the photo-voltaic (PV) industry grows, the floating PV has been suggested to resolve current environmental destruction and a lack of installation area. Currently, various floating PV systems have been developed, but there is a lack of studies on how the shape of the floating body and other compositions are affecting structural behavior. In this study, the behavior of the floating PV was investigated at the various length of mooring lines, stiffness of connecting hinges, and size of floating bodies. The shortest mooring lines with the distributed type floating PV showed the least force on the floating body and corresponding motion. A frictionless hinge is safer at the regular and low-height wave, while a stiff hinge is safer at irregular and high-height wave. In addition, due to the bi-axial distribution of the connecting hinge, 45° direction wave was found to be the most dangerous.



본 연구는 산업통상자원부(MOTIE)와 한국에너지기술평가원(KETEP)의 지원을 받아 수행한 연구과제입니다.(No. 20173030069040)


  1. "2016 New & renewable energy white paper," 2016 (accessed 31, Dec., 2018).
  2. Ham, S. W., Ha, H. J. and Lee, J. W., 2019, "Computational Analysis of an Inverted-type Cross-flow Turbine for Ultra-low head Conditions," Journal of the Korean Society of Manufacturing Process Engineers, Vol. 18(4), pp. 76-86.
  3. V. A. Kumar, M. Rashmitha, B. Naresh, J. Bangararaju and V. Rajagopal, 2013, "Performance analysis of different Photovoltaic Technologies," International Conference on Advanced Electronic Systems (ICAES), Pilani, pp. 301-303.
  4. Lee, G. H., Choi, J. W., Seo, J. H. and Ha, H. J., 2019, "Comparative Study of Effect of Wind and Wave Load on Floating PV: Computational Simulation and Design Method," Journal of the Korean Society of Manufacturing Process Engineers, Vol. 18(11), pp. 9-17.
  5. Korea environment Institute, 2019, "KEI focus", Vol. 7(9), pp. 1-18.
  6. Fu, S., Moan, T., Chen, X., Cui, W., 2007, "Hydroelastic analysis of flexible floating interconnected structures," Ocean Engineering, Vol. 34(11-12) pp. 1516-1531
  7. Tajali, Z., Shafieefar, M. Akhyani, M., 2009, "Hydrodynamic Analysis of Multi-Body Floating Piers," International Conference on Offshore Mechanics and Arctic Engineering, Vol. 1, pp. 797-804
  8. Gao R.P., Wang C.M., Koh, C.G., 2013, "Reducing hydroelastic response of pontoon-type very large floating structures using flexible connector and gill cells," Engineering Structures Vol. 52, pp. 372-383.
  9. Jin, Q., Li, T. Li, Z. and Xin. J., 2015, "Numerical simulation of wave loads over a large container ship on mooring state," Journal of Energy Challenges and Mechanics, Vol. 1(3), pp. 147-154
  10. Pan, Y. Prasanta Sahoo, K. Lu, L., 2015, "Numerical study of hydrodynamic response of mooring lines for large floating structure in South China Sea," Ship and Offshore Structures, Vol. 11(7), pp. 774-781
  11. Ministry of Land, Infrastructure and Transport, 2016 "National Construction Standards Specification"
  12. The Meteorological Administration, 2019, "Weather Material Open Portal"
  13. Cho, I. H and Kim, J. R. 2020, "Correlation of Reflection Coefficient and Extracted Efficiency of an Oscillating Water Column Device in Front of a Seawall," Journal of Korean Society of Coastal and Ocean Engineers, Vol. 32(4), pp. 242-251.
  14. Ansys, 2013, "AQWA Theory manual." ANSYS Inc.
  15. Zullah, M. A., and Lee Y. H., 2016, "Fluid-structure interaction simulation of a floating wave energy convertor with water-turbine driven power generation," The Korean Society of marine engineering, Vol. 40(8), pp. 710-720.