초록

This paper presents a study on a negative damping phenomenon of a floating offshore wind turbine. The negative damping may lead to large resonant motion of floating offshore wind turbine. The reason of this effect is shown to be caused by a too fast blade-pitch controller compared with the rotational motion of the platform. By detuning the gain of PI controller and changing the constant torque after rated wind speed with blade-pitch control, the negative damping issue is solved, but the variations in the responses such as rotational speed or electrical power are increased. Therefore, sensitivity analysis of detuned gain is required for controller optimization.

키워드

부유식 해상 풍력터빈, 네거티브 댐핑, 피치 제어, 민감도 해석, 정상상태 해석

참고문헌(11)open

  1. [보고서] EWEA / 2011 / UpWind - Design limits and solutions for very large wind turbines

  2. [인터넷자료] IEA Wind / Task 23 Offshore Wind Technology and Deployment

  3. [인터넷자료] IEA Wind / Task 30 Offshore Code Comparison Collaboration Continuation(OC4)

  4. [보고서] Jonkman J. / 2010 / Definition of the Floating System for Phase Ⅳ of OC3

  5. [보고서] Robertson A. / 2014 / Definition of the Semisubmersible Floating System for Phase II of OC4

  6. [학술대회] Kim J. / 2016 / Numerical Simulation of 12MW Floating Offshore Wind Turbine / Proceedings of the 30th TEAM 2016 : 446 ~ 449

  7. [보고서] Jonkman J. / 2009 / Definition of a 5-MW Reference Wind Turbine for Offshore System Development

  8. [보고서] Robertson A. / 2014 / Offshore Code Comparison Collaboration Continuation Within IEA Wind Task 30 : Phase II Results Regarding a Floating Semisubmersible Wind System

  9. [보고서] Jonkman J. / 2007 / Dynamic Modeling and Loads Analysis of an Offshore Floating Wind Turbine

  10. [학술지] Larsen T. J. / 2007 / A method to avoid negative damped low frequent tower vibrations for a floating, pitch controlled wind turbine / Journal of Physics, Series 75

  11. [보고서] Jonkman J. / 2010 / Definition of the Floating System for Phase IV of OC3