Ermakov, Andrei and Marie, Alice and Ringwood, John (2022) Some fundamental results for cyclorotor wave energy converters for optimum power capture. IEEE Transactions on Sustainable Energy, 13 (3). pp. 1869-1872. ISSN 1949-3029

Preview

Download (1MB) | Preview

Abstract

Cyclorotor-based wave energy converters (WECs) present a relatively new and innovative paradigm for wave energy harvesting. Their operational principle is based on the generation of lift forces on the rotating hydrofoils due to their interaction with wave-induced circulation of water particles. As a result, relatively little is known about their optimal operation. To date, cyclorotor device performance has been measured by the power of waves ra- diated by the WEC, while a constant rotational velocity, consistent with the wave frequency, is employed. In this note we show (a) that variation of the cyclorotor velocity within the incoming monochro- matic wave period significantly increases the generated mechanical power, while (b) optimising wave cancellation is at odds with the maximisation of shaft power. To optimise shaft power, the letter adopts a multi-harmonic solution for variable cyclorotor rotation rate, inspired by methods developed in other WEC domains.

Item Type:	Article
Keywords:	Cyclorotor; optimal control; performance metrics; velocity profile; wave energy converter;
Academic Unit:	Faculty of Science and Engineering > Electronic Engineering
Item ID:	16599
Identification Number:	https://doi.org/10.1109/tste.2022.3171711
Depositing User:	Dr Andrei Ermakov
Date Deposited:	10 Oct 2022 09:26
Journal or Publication Title:	IEEE Transactions on Sustainable Energy
Publisher:	Institute of Electrical and Electronics Engineers (IEEE)
Refereed:	No
URI:	Publisher
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

Repository Staff Only(login required)

Item control page

Downloads

Origin of downloads