Wave-to-wire simulation of a raft-type WEC with a mechanical PTO

Journal Article

Title: Wave-to-wire simulation of a raft-type WEC with a mechanical PTO

Author:

He, K.; Gao, H.

Publication Date:

December 1, 2025

Journal:

Oceanic Engineering

Volume:

341

Issue:

Part 2

Pages:

Publisher:

Elsevier

Affiliation:

Dalian Maritime University

Technology:

Wave

Collection Method:

Modeling

Engineering:

Hydrodynamics, Power Take Off

Signature Project:

WEC-Sim

Language:

English

Document Access

Website:

External Link

Citation

APA
BibTex
RIS

He, K.; Gao, H. (2025). Wave-to-wire simulation of a raft-type WEC with a mechanical PTO. Oceanic Engineering, 341(Part 2), 14. https://doi.org/10.1016/j.oceaneng.2025.122629

@article{He-2025-,
author = {He, K and Gao, H},
title = {Wave-to-wire simulation of a raft-type WEC with a mechanical PTO},
journal = {Oceanic Engineering},
year = {2025},
month = {dec},
publisher = {Elsevier},
volume = {341},
number = {Part 2},
pages = {14},
doi = {10.1016/j.oceaneng.2025.122629},
url = {https://www.sciencedirect.com/science/article/pii/S0029801825023121},
keywords = {Wave, Modeling, Hydrodynamics, Power Take Off},
}

Export Citation to BibTex

TY - JOUR
TI - Wave-to-wire simulation of a raft-type WEC with a mechanical PTO
AU - He, K
AU - Gao, H
T2 - Oceanic Engineering
AB - Wave energy is a renewable and clean energy source with significant potential. However, the hydraulic power take-off (PTO) systems used in previous raft-type wave energy converters (WECs) run the risk of oil leakage. In addition, it is difficult to simulate the details of the PTO forces using the computational fluid dynamics (CFD) method. This study designs a mechanical PTO with one-way bearings and performs dry experiments to verify the numerical model. A wave-to-wire model is then proposed to simulate the interaction between the raft-type WEC and PTO based on potential flow theory. This work evaluates the impact of the varying rotary inertia of the flywheel and the buoy under regular waves. The results show that the wave-to-wire model can effectively simulate the interaction between the mechanical PTO and the buoys. The maximum annual average power of the device is 774.21W, and the maximum capture width ratio (CWR) is 123.3%.
DA - 2025/12//
PY - 2025
PB - Elsevier
VL - 341
IS - Part 2
SP - 14
UR - https://www.sciencedirect.com/science/article/pii/S0029801825023121
DO - 10.1016/j.oceaneng.2025.122629
LA - English
KW - Wave
KW - Modeling
KW - Hydrodynamics
KW - Power Take Off
ER -

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Abstract

Wave energy is a renewable and clean energy source with significant potential. However, the hydraulic power take-off (PTO) systems used in previous raft-type wave energy converters (WECs) run the risk of oil leakage. In addition, it is difficult to simulate the details of the PTO forces using the computational fluid dynamics (CFD) method. This study designs a mechanical PTO with one-way bearings and performs dry experiments to verify the numerical model. A wave-to-wire model is then proposed to simulate the interaction between the raft-type WEC and PTO based on potential flow theory. This work evaluates the impact of the varying rotary inertia of the flywheel and the buoy under regular waves. The results show that the wave-to-wire model can effectively simulate the interaction between the mechanical PTO and the buoys. The maximum annual average power of the device is 774.21W, and the maximum capture width ratio (CWR) is 123.3%.