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A fully floating system for a wave energy converter with direct-driven linear generator

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  • Gao, Yuping
  • Shao, Shuangquan
  • Zou, Huiming
  • Tang, Mingsheng
  • Xu, Hongbo
  • Tian, Changqing

Abstract

Wave energy is one of the most promising renewable energy for power generation. This research develops a novel power take-off methodology to surmount the problems associated with mooring, seawater corrosion and access for maintenance in conventional WEC (wave energy converters) with direct-driven linear generators. Its prototype consists of two bodies, the floating body acting as a buoy to extract the wave energy, while the inner body undergoes a forced oscillation, whose relative motion generates the electronic power. Its feasibility is investigated theoretically by coupling the dynamics of the wave, the floating and the inner bodies and the electromagnetic characteristics of the linear generator. As a result, the generator can induce a highly sinusoidal voltage. Furthermore, the performance of the system is investigated in detail under different conditions. The results show that, a resonance has been achieved in the case with the spring constant of 12,633 N/m, with a maximum power capture ratio of 57%. The performance of the system is shown to be sensitive to the load resistance, the wave height, and the spring constant.

Suggested Citation

  • Gao, Yuping & Shao, Shuangquan & Zou, Huiming & Tang, Mingsheng & Xu, Hongbo & Tian, Changqing, 2016. "A fully floating system for a wave energy converter with direct-driven linear generator," Energy, Elsevier, vol. 95(C), pages 99-109.
    • Handle: RePEc:eee:energy:v:95:y:2016:i:c:p:99-109
    DOI: 10.1016/j.energy.2015.11.072
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    Cited by:

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    4. Liu, Zhenwei & McGregor, Cameron & Ding, Songlin & Wang, Xu, 2023. "Study of a three-dimensional model simulation of a speed amplified flux switching linear generator for wave energy conversion and its design optimization in the ocean environment," Energy, Elsevier, vol. 284(C).
    5. Jin, Chungkuk & Kang, HeonYong & Kim, MooHyun & Cho, Ilhyoung, 2020. "Performance estimation of resonance-enhanced dual-buoy wave energy converter using coupled time-domain simulation," Renewable Energy, Elsevier, vol. 160(C), pages 1445-1457.
    6. Rui Mendes & Maria Do Rosário Calado & Sílvio Mariano, 2018. "Maximum Power Point Tracking for a Point Absorber Device with a Tubular Linear Switched Reluctance Generator," Energies, MDPI, vol. 11(9), pages 1-18, August.
    7. Gao, Hong & Yu, Yang, 2018. "The dynamics and power absorption of cone-cylinder wave energy converters with three degree of freedom in irregular waves," Energy, Elsevier, vol. 143(C), pages 833-845.
    8. Jing Zhang & Haitao Yu & Zhenchuan Shi, 2018. "Design and Experiment Analysis of a Direct-Drive Wave Energy Converter with a Linear Generator," Energies, MDPI, vol. 11(4), pages 1-15, March.
    9. Raju Ahamed & Kristoffer McKee & Ian Howard, 2022. "A Review of the Linear Generator Type of Wave Energy Converters’ Power Take-Off Systems," Sustainability, MDPI, vol. 14(16), pages 1-42, August.
    10. Jing Zhang & Haitao Yu & Zhenchuan Shi, 2019. "Analysis of a PM Linear Generator with Double Translators for Complementary Energy Generation Platform," Energies, MDPI, vol. 12(24), pages 1-12, December.
    11. Fabian G. Pierart & Matias Rubilar & Jaime Rohten, 2023. "Experimental Validation of Damping Adjustment Method with Generator Parameter Study for Wave Energy Conversion," Energies, MDPI, vol. 16(14), pages 1-14, July.
    12. Li, Jianwei & Yang, Qingqing & Robinson, Francis. & Liang, Fei & Zhang, Min & Yuan, Weijia, 2017. "Design and test of a new droop control algorithm for a SMES/battery hybrid energy storage system," Energy, Elsevier, vol. 118(C), pages 1110-1122.
    13. Elie Al Shami & Ran Zhang & Xu Wang, 2018. "Point Absorber Wave Energy Harvesters: A Review of Recent Developments," Energies, MDPI, vol. 12(1), pages 1-36, December.
    14. Chen, Weixing & Wu, Zheng & Liu, Jimu & Jin, Zhenlin & Zhang, Xiantao & Gao, Feng, 2021. "Efficiency analysis of a 3-DOF wave energy converter (SJTU-WEC) based on modeling, simulation and experiment," Energy, Elsevier, vol. 220(C).

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