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Abstract

Multi-resonant control of a 3 degree-of-freedom (heave-pitch-surge) wave energy converter enables energy capture that can be in the order of three times the energy capture of a heave-only wave energy converter. The invention uses a time domain feedback control strategy that is optimal based on the criteria of complex conjugate control. The multi-resonant control can also be used to shift the harvested energy from one of the coupled modes to another, enabling the elimination of one of the actuators otherwise required in a 3 degree-of-freedom wave energy converter. This feedback control strategy does not require wave prediction; it only requires the measurement of the buoy position and velocity.

Patent Number

US 10,488,828 B2

Assignee

National Technology & Engineering Solutions of Sandia, LLC

Assignee

Michigan Technological University

Assignee

South Dakota Board of Regents

Application Number

15/830,770

Date Filed

12-4-2017

Certificate of Correction

No

Issue Date

11-26-2019

Disciplines

Engineering Mechanics | Mechanical Engineering

Comments

For the most up-to-date information about this patent, including the availability of Certificates of Correction, be sure to check the United States Patent and Trademark Office's free, publicly accessible database: Patent Public Search https://ppubs.uspto.gov/pubwebapp/static/pages/landing.html

Multi-resonant feedback control of multiple degree-of-freedom wave energy converters

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