A novel method for predicting the power outputs of wave energy converters
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This paper focuses on realistically predicting the power outputs of wave energy converters operating in shallow water nonlinear waves. A heaving two-body point absorber is utilized as a specific calculation example, and the generated power of the point absorber has been predicted by using a novel method (a nonlinear simulation method) that incorporates a second order random wave model into a nonlinear dynamic filter. It is demonstrated that the second order random wave model in this article can be utilized to generate irregular waves with realistic crest–trough asymmetries, and consequently, more accurate generated power can be predicted by subsequently solving the nonlinear dynamic filter equation with the nonlinearly simulated second order waves as inputs. The research findings demonstrate that the novel nonlinear simulation method in this article can be utilized as a robust tool for ocean engineers in their design, analysis and optimization of wave energy converters.
KeywordsWave energy converters Nonlinear simulation Nonlinear dynamic filter
The work was supported by the State Key Laboratory of Ocean Engineering of China (Grant GKZD010038). Special thanks are due to the two anonymous reviewers whose valuable comments have led to the improved quality of this paper.
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