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Hardware-In-The-Loop Simulation of a Heaving Wave Energy Converter

Signorelli, Chris and Villegas, Carlos and Ringwood, John (2011) Hardware-In-The-Loop Simulation of a Heaving Wave Energy Converter. Proceedings of the 9th European Wave and Tidal Energy Conference (EWTEC).

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Abstract

The technical challenges in developing PTO systems for wave energy converters are enormous as they have to accommodate both power absorption and survival of extreme waves. The design of PTO systems and their controllers requires complex simulations, taking into account the interaction with the wave energy converter (WEC). However, many of the properties for continuous operation are difficult to reproduce in simulation. PTO and control design for WECs can be facilitated using onshore hardware-in-the-loop (HIL) test-rigs. By performing HIL simulations, it is possible to test the actual PTO and its control equipment under typical operating conditions. To demonstrate the concept we have adapted the scale model of a two degree-of-freedom heaving point-absorber to be tested in this manner. To recreate typical operating conditions, we created and validated a real-time simulation of the WEC, enabling its motion to be emulated using a hydraulic prime mover. The degree of novelty with this work concerns the application of HIL to the above WEC, with real hardware, using an emulated panchromatic sea-state. Experimental results demonstrate the effectiveness of the approach to test a representative PTO system.

Item Type: Article
Keywords: Hardware in the loop; wave energy; power take-off; point absorber; state space; Prony;
Subjects: Science & Engineering > Electronic Engineering
Item ID: 3553
Depositing User: Professor John Ringwood
Date Deposited: 30 Mar 2012 11:09
Journal or Publication Title: Proceedings of the 9th European Wave and Tidal Energy Conference (EWTEC)
Publisher: School of Civil Engineering and the Environment, University of Southampton
Refereed: Yes
URI:

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