A Study on Cooperation Control of Wave Energy Converter and Wind Turbine for Motion Reduction

2016 Fiscal Year Final Research Report

• Project/Area Number: 15H06472
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Dynamics/Control
• Research Institution: Kyushu University
• Principal Investigator: Zhu Hongzhong 九州大学, エネルギー基盤技術国際教育研究センター, 助教 (00752932)
• Research Collaborator: LIU Yingyi 九州大学, 応用力学研究所, 研究員
• Project Period (FY): 2015-08-28 – 2017-03-31
• Keywords: 風力波力複合装置 / モーションコントロール / 波力発電装置

Outline of Final Research Achievements

In this study, a system combining a floating offshore wind turbine and wave energy converters is proposed. The system is controlled to reduce the pitching motion of the floating system so that the fatigue life can be improved. Firstly, the optimal design method of the wave energy converters including the mass, the spring coefficient and the damping coefficient was developed by modeling the power take-off device as the combination of a linear spring and a linear damper. Then, model predictive control method was proposed to control the power take-off devices to suppress the pitching motion of the floating platform. The effectiveness was verified via simulations. Furthermore, High performance 3D printer was applied to make a small scale model for tank experiments. Owing to the friction, the motion of the wave energy converters was small and the experimental results had some difference with simulation results.

Free Research Field

制御工学