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Abstract
The present invention is directed to a nonlinear controller for nonlinear wave energy converters (WECs). As an example of the invention, a nonlinear dynamic model is developed for a geometrically right-circular cylinder WEC design for the heave-only motion, or a single degree-of-freedom (DOF). The linear stiffness term is replaced by a nonlinear cubic hardening spring term to demonstrate the performance of a nonlinear WEC as compared to an optimized linear WEC. By exploiting the nonlinear physics in the nonlinear controller, equivalent power and energy capture, as well as simplified operational performance is observed for the nonlinear cubic hardening spring controller when compared to an optimized linear controller.
Patent Number
US 10,823,134 B2
Assignee
National Technology & Engineering Solutions of Sandia, LLC
Assignee
Michigan Technological University
Application Number
16/534,746
Date Filed
9-13-2018
Certificate of Correction
No
Issue Date
11-3-2020
Disciplines
Engineering Mechanics | Mechanical Engineering
Recommended Citation
Wilson, David G.; Bacelli, Giorgio; Robinett, Rush D. III; and Abdelkhalik, Ossama, "Nonlinear controller for nonlinear wave energy converters" (2020). Michigan Tech Patents. 150.
https://digitalcommons.mtu.edu/patents/150
Comments
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