Abstract
For wave energy to become feasible it is a requirement that the efficiency and reliability of the power take-off (PTO) systems are significantly improved. The cost of installing and testing PTO-systems at sea are however very high, and the focus of the current paper is therefore on the design of a full scale wave simulator for testing PTO-systems for point absorbers.
The main challenge is here to design a system, which mimics the behavior of a wave when interacting with a given PTO-system. The paper includes a description of the developed system, located at Aalborg University, and the considerations behind the design. Based on the description a model of the system is presented, which, along with a description of the wave theory applied, makes the foundation for the control strategy. The objective of the control strategy is to emulate not only the wave behavior, but also the dynamic wave-float interaction, the inertia of the float and the added inertia of the water. Based on this simulation results are presented, which show that the system is able to emulate waves more than three meters in height and with a resulting force of more than 800 kN, while interacting with a general PTO-system.
The main challenge is here to design a system, which mimics the behavior of a wave when interacting with a given PTO-system. The paper includes a description of the developed system, located at Aalborg University, and the considerations behind the design. Based on the description a model of the system is presented, which, along with a description of the wave theory applied, makes the foundation for the control strategy. The objective of the control strategy is to emulate not only the wave behavior, but also the dynamic wave-float interaction, the inertia of the float and the added inertia of the water. Based on this simulation results are presented, which show that the system is able to emulate waves more than three meters in height and with a resulting force of more than 800 kN, while interacting with a general PTO-system.
| Original language | English |
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| Title of host publication | Proceedings of the ASME Symposium on Fluid Power and Motion Control (FPMC 2012) |
| Number of pages | 14 |
| Publisher | American Society of Mechanical Engineers |
| Publication date | 2012 |
| Pages | 551-564 |
| ISBN (Print) | 978-0-86197-187-9 |
| Publication status | Published - 2012 |
| Event | ASME Symposium on Fluid Power and Motion Control, FPMC 2012 - Bath, United Kingdom Duration: 12 Sept 2012 → 14 Sept 2012 |
Conference
| Conference | ASME Symposium on Fluid Power and Motion Control, FPMC 2012 |
|---|---|
| Country/Territory | United Kingdom |
| City | Bath |
| Period | 12/09/2012 → 14/09/2012 |