Control of the CCell Oscillating Surge Wave Energy Converter

A. J. Hillis; N. P. Sell; D. R.S. Chandel; A. R. Plummer

doi:10.1016/j.ifacol.2017.08.2498

Control of the CCell Oscillating Surge Wave Energy Converter

A. J. Hillis, N. P. Sell, D. R.S. Chandel, A. R. Plummer

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

1 Citation (SciVal)

Abstract

CCell is a type of Oscillating Surge Wave Energy Converter (OSWEC) under development by Zyba Renewables Ltd. Laboratory scale wave tank tests have been conducted with a prototype device equipped with a passive controllable hydraulic power take-off system. The results are used to derive a simplified semi-analytical model of the governing hydrodynamics, providing a basis for simulation studies of control algorithms. The Simple and Effective control strategy of Fusco and Ringwood (2013) is used to generate an angular velocity trajectory designed to maximise energy capture whilst keeping the device motion within physical displacement constraints. Velocity tracking is achieved using a State Feedback Control architecture with integral action (SFCIA), combined with an integral position controller acting on measured angular position in order to reduce drift effects. Good performance when subjected to scaled real irregular sea states is observed in terms of energy capture and motion, and good robustness to parameter variation is demonstrated.

Original language	English
Pages (from-to)	14686-14691
Number of pages	6
Journal	IFAC-PapersOnLine
Volume	50
Issue number	1
DOIs	https://doi.org/10.1016/j.ifacol.2017.08.2498
Publication status	Published - 1 Jul 2017

Keywords

dynamic modelling
Effective control
real-time estimation
robust control
Simple
Wave energy

ASJC Scopus subject areas

Control and Systems Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.ifacol.2017.08.2498

Cite this

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title = "Control of the CCell Oscillating Surge Wave Energy Converter",

abstract = "CCell is a type of Oscillating Surge Wave Energy Converter (OSWEC) under development by Zyba Renewables Ltd. Laboratory scale wave tank tests have been conducted with a prototype device equipped with a passive controllable hydraulic power take-off system. The results are used to derive a simplified semi-analytical model of the governing hydrodynamics, providing a basis for simulation studies of control algorithms. The Simple and Effective control strategy of Fusco and Ringwood (2013) is used to generate an angular velocity trajectory designed to maximise energy capture whilst keeping the device motion within physical displacement constraints. Velocity tracking is achieved using a State Feedback Control architecture with integral action (SFCIA), combined with an integral position controller acting on measured angular position in order to reduce drift effects. Good performance when subjected to scaled real irregular sea states is observed in terms of energy capture and motion, and good robustness to parameter variation is demonstrated.",

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AU - Hillis, A. J.

AU - Sell, N. P.

AU - Chandel, D. R.S.

AU - Plummer, A. R.

PY - 2017/7/1

Y1 - 2017/7/1

N2 - CCell is a type of Oscillating Surge Wave Energy Converter (OSWEC) under development by Zyba Renewables Ltd. Laboratory scale wave tank tests have been conducted with a prototype device equipped with a passive controllable hydraulic power take-off system. The results are used to derive a simplified semi-analytical model of the governing hydrodynamics, providing a basis for simulation studies of control algorithms. The Simple and Effective control strategy of Fusco and Ringwood (2013) is used to generate an angular velocity trajectory designed to maximise energy capture whilst keeping the device motion within physical displacement constraints. Velocity tracking is achieved using a State Feedback Control architecture with integral action (SFCIA), combined with an integral position controller acting on measured angular position in order to reduce drift effects. Good performance when subjected to scaled real irregular sea states is observed in terms of energy capture and motion, and good robustness to parameter variation is demonstrated.

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KW - dynamic modelling

KW - Effective control

KW - real-time estimation

KW - robust control

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Control of the CCell Oscillating Surge Wave Energy Converter

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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