Design of a hydraulic power take-off system for the wave energy device with an inverse pendulum

Abstract

This paper describes a dual-stroke acting hydraulic power take-off (PTO) system employed in the wave energy converter (WEC) with an inverse pendulum. The hydraulic PTO converts slow irregular reciprocating wave motions to relatively smooth, fast rotation of an electrical generator. The design of the hydraulic PTO system and its control are critical to maximize the generated power. A time domain simulation study and the laboratory experiment of the full-scale beach test are presented. The results of the simulation and laboratory experiments including their comparison at full-scale are also presented, which have validated the rationality of the design and the reliability of some key components of the prototype of the WEC with an inverse pendulum with the dual-stroke acting hydraulic PTO system.

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Correspondence to Da-hai Zhang 张大海.

Additional information

This work was financially supported by the National Natural Science Foundation of China (Grant Nos. 51205346 and 41206074), the National High Technology Research and Development Program of China (863 Program, Grant No. 2011AA050201), Science Fund for Creative Research Groups of National Natural Science Foundation of China (Grant No. 51221004), Zhejiang Provincial Natural Science Foundation of China (Grant No. LY12E05017), and Open Foundation of the State Key Laboratory of Fluid Power Transmission and Control (Grant No. GZKF-201311).

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Zhang, Dh., Li, W., Zhao, Ht. et al. Design of a hydraulic power take-off system for the wave energy device with an inverse pendulum. China Ocean Eng 28, 283–292 (2014). https://doi.org/10.1007/s13344-014-0023-6

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Key words

  • simulation
  • dual-stoke acting
  • power take-off (PTO)
  • laboratory experiment
  • inverse pendulum
  • wave energy converter