Stabilization of power output fluctuation and floating platform motion of a floating offshore wind turbine-generator system by multi-objective optimization control

2014 Fiscal Year Final Research Report

• Project/Area Number: 24561059
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Energy engineering
• Research Institution: Osaka Prefecture University
• Principal Investigator: WAKUI Tetsuya 大阪府立大学, 工学(系)研究科(研究院), 准教授 (40339750)
• Research Collaborator: YOSHIMURA Motoki 大阪府立大学, 大学院工学研究科機械系専攻機械工学分野
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 洋上風力発電 / 浮体式洋上風力発電 / 多目的制御 / 最適制御 / 再生可能エネルギー

Outline of Final Research Achievements

In the present study, a multi-objective optimization control for floating offshore wind turbine-generator systems was developed to reduce both power output fluctuations and platform pitching motion through numerical analysis using the aeroelastic simulation model. First, a novel parameter setting of conventional rotor speed control based on collective pitch angle manipulation was developed and its effectiveness was clarified. Then, a novel multi-objective optimization control approach based on collective blade pitch manipulation and generator torque manipulation was developed. In this approach, the rated generator power is maintained by the blade pitch manipulation, and the generator torque is manipulated so as to maintain the platform motion speed at 0 m/s. The numerical simulation reveals the effectiveness of the developed approach to reduce both power output fluctuations and platform pitching motion, as compared with the conventional rotor speed control.

Free Research Field

エネルギーシステム工学