Browse > Article
http://dx.doi.org/10.3795/KSME-A.2014.38.1.001

Design of Individual Pitch Control and Fatigue Analysis of Wind Turbine  

Jeon, Gyeong Eon (Dept. of Aerospace Engineering, Chonbuk Nat'l Univ.)
No, Tae Soo (Dept. of Aerospace Engineering, Chonbuk Nat'l Univ.)
Kim, Guk Sun (Dept. of Aerospace Engineering, Chonbuk Nat'l Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.38, no.1, 2014 , pp. 1-9 More about this Journal
Abstract
Structural loading on a wind turbine is due to cyclic loads acting on the blades under turbulence and periodic wind field. The structural loading generates fatigue damage and fatigue failure of the wind turbine. The individual pitch control(IPC) is an efficient control method for reducing structural loading. In this paper, we present an IPC design method using Decentralized LQR(DLQR) and Disturbance accommodating control(DAC). DLQR is used for regulating rotor speed and DAC is used for canceling out disturbances. The performance of the proposed IPC is compared with CPC, which was designed with a gain-scheduled PI controller. We confirm the effect of fatigue load reduction with the use of damage equivalent load(DEL).
Keywords
Individual Pitch Control; Decentralized LQR; Disturbance Accommodating Control; Rainflow Counting; Fatigue Load; Damage Equivalent Load;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Hand, M. M., 2003 "Mitigation of Wind Turbine/ Vortex Interaction Using Disturbance Accommodating Control," Ph.D. Dissertation, Department of Mechanical Engineering University of Colorado. Boulder, CO, USA, NREL/TP-500-35172.
2 Namik, H., 1994, "Individual Blade Pitch and Disturbance Accommodating Control of Floating Offshore Wind Turbines," Ph.D. The University of Auckland.
3 Wright, A. D., 2004, "Modern Control Design for Flexible Wind Turbines," National Renewable energy Laboratory/TP-500-35816.
4 Jeon, G. E., No, T. S., Kim, G. S. and Kim, J. Y., 2012, "Design of DAC and Decentralized LQR for Wind Turbine Individual Pitch Control" 2012 KWEA Korea Wind Energy Spring Conference, May, 16.
5 Pahm, T.-K., Nam, Y.S., Kim, H.G. and Son, J.H., 2012, "LQR Control for a Multi-MW Wind Turbine," World Academy of Science, Engineering and Technology 62.
6 Jonkman, J. M., 2007, "Dynamics Modeling and Loads Analysis of an Offshore Floating Wind Turbines," NREL/TP-500-41958.
7 Stava, O. M., 2012, "Fatigue Analysis of Offshore Wind Turbine," Konstruksjoner og materialer, Ph.D Thesis.
8 Bossanyi, E. A., 2005, "Further Load Reduction with Individual Pitch Control," Wind Energy 481-485.
9 Bossanyi, E. A., 2003, "Wind Turbine Control for Load Reduction," Wind Energy, Vol. 6, No. 3, pp. 229-244.   DOI
10 Olagnon, M. and Guede, Z., 2008, "Rainflow Fatigue Analysis For Loads With Mutimodal Power Spectral Densities," Archive Institutionele de l'lfremer, April-July 2008, Vol. 21, Issue 2-3, pp. 160-176.
11 International Electrotechnical Commission 2001, "IEC 61400-13, Measurement of Mechanical Loads," First edition.