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Abstract
A multi-resonant wide band controller decomposes the wave energy converter control problem into sub-problems; an independent single-frequency controller is used for each sub-problem. Thus, each sub-problem controller can be optimized independently. The feedback control enables actual time-domain realization of multi-frequency complex conjugate control. The feedback strategy requires only measurements of the buoy position and velocity. No knowledge of excitation force, wave measurements, nor wave prediction is needed. As an example, the feedback signal processing can be carried out using Fast Fourier Transform with Hanning windows and optimization of amplitudes and phases. Given that the output signal is decomposed into individual frequencies, the implementation of the control is very simple, yet generates energy similar to the complex conjugate control.
Patent Number
US 10,423,126 B2
Assignee
National Technology & Engineering Solutions of Sandia, LLC
Assignee
Michigan Technological University
Application Number
15/830,752
Date Filed
12-4-2017
Certificate of Correction
No
Issue Date
9-24-2019
Disciplines
Engineering Mechanics | Mechanical Engineering
Recommended Citation
Wilson, David G.; Robinett, Rush D. III; Abdelkhalik, Ossama; Song, Jiajun; and Bacelli, Giorgio, "Multi-resonant feedback control of a single degree-of-freedom wave energy converter" (2019). Michigan Tech Patents. 147.
https://digitalcommons.mtu.edu/patents/147
Comments
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