Modal analysis of a teetered-rotor wind turbine using the floquet approach

2000 ASME Wind Energy Symposium

Volumn , Issue , 2000, Pages 23-33

  Bir, Gunjit ^a   Stol, Karl ^b  

^a NATIONAL RENEWABLE ENERGY LABORATORY   (United States)

^b UCB 450   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

DEGREES OF FREEDOM (MECHANICS); LOCKS (FASTENERS); MODAL ANALYSIS; TURBINE COMPONENTS; WIND POWER; WIND TURBINES;

DESIGN CONDITION; DYNAMIC INSTABILITY; FLOQUET APPROACH; GYROSCOPIC COUPLING; GYROSCOPIC EFFECTS; MODAL PARAMETERS; PERIODIC COEFFICIENTS; SYSTEM EQUATIONS;

TURBOMACHINE BLADES;

EID: 84894435964     PISSN: None     EISSN: None     Source Type: Conference Proceeding    
DOI: 10.2514/6.2000-23     Document Type: Conference Paper

References (19)

1. James, G.H., "Extraction of Modal Parameters from an Operating HAWT using the Natural Excitation Technique (NExT)," Proceedings of the 1994 ASME Wind Energy Symposium, Wind Energy-1994, SED-Vol. 15, New York: American Society of Mechanical Engineers? pp. 227-232
2. Malcolm D.J.; James, G.H., "Identification of Natural Operating Modes of HAWTs from Modeling Data," Proceedings of the 1996 Wind Energy Symposium, Wind Energy, Vol. I, New York, NY: American Society of Mechanical Engineers, 1996, pp. 24-31
3. Lobitz, D.W., Sullivan, W.N., VAWTDYN: A Numerical Package for the Dynamic Analysis of Vertical Axis Wind Turbine, Report SAND-80- 0085, Albuquerque, NM: Sandia National Laboratories, July 1980
4. Came, T.G.; Lobitz, D.W.; Nord, A.R.; Watson, R.A., "Finite Element Analysis and Modal Testing of a Rotating Wind Turbine," Presented at the AIAA/ASME/ASCE/AHS Structures - Structural; Dynamics and Materials Conference, New Orleans, LA, May 9, 1982
5. Came, T.G.; Martinez, D.R.; Ibrahim S.R., Modal Identification of a Rotating Blade System, Report SAND82-2 115 UC-32, Albuquerque, NM: Sandia National Laboratories, April 1983
6. James, G.H.; Came, T.G.; Lauffer J.P., The Natural Excitation Technique (NEXT) for Modal Parameter Extraction fi-om Operating Wind Turbines, Report SAND92-1666, UC-26 1, Albuquerque, NM: Sandia National Laboratories, February 1993
7. Yamane, T., Thresher, R.W., "Coupled Rotor/Tower Stability Analysis of a 6-Meter Experimental Wind Turbine," Presented at the Sixth ASME Wind Energy Symposium, Dallas, TX, February 1987
8. Bir, G.S., Butterfield, C.P., "Modal Dynamics of a Next-Generation Flexible-Rotor Soft-Tower Wind Turbine," Proceedings of the 151h International Modal Analysis Conference, Orlando, Florida, 1997
9. Johnson, W.J., Helicopter Theory, Princeton, NJ: Princeton University Press, 1980
10. Bir, G.S., Robinson, M., "Code Development for Control Design Applications (Phase I: Structural Modeling)," Proceedings of the l@ AIAA/ASME Wind Energy Symposium, Reno, Nevada, January 11-14, 1999
11. Hodges D, Sastry A., "Multi-Flexible Body Analysis for Application to Wind Turbine Control Design," Proceedings of the 19"' AIAA/ASME Wind Energy Symposium, Reno, Nevada, January 10-13, 2000
12. Stol, K., Bir, G.S., Balas, M., "Linearized Dynamics and Operating Modes of a Simple Wind Turbine Model," Proceedings of the 181h AIAA/ASME Wind Energy Symposium, Reno, Nevada, January 1 l-14, 1999
13. Stol, K. Bir. G.S.," Validation of a Symbolic Wind Turbine Structural Dynamics Model," Proceedings of the 19"" AIAA/ASME Wind Energy Symposium, Reno, Nevada, January 10-l3, 2000
14. Denavit, J., Hartenberg, R.S., "A Kinematic Notation for Lower-Pair Mechanisms Based on Matrices," ASME J. Applied Mechanics, No. 2, 1955, pp. 215-221
15. Nayfeh, A.H., Mook, D.T., Nonlinear Oscillations, John Wiley & Sons, New York, 1979. Denavit, J., Hartenberg, R.S., "A Kinematic Notation for Lower-Pair Mechanisms Based on Matrices,". 4SME J. Applied Mechanics, No. 2: 1955, pp. 215-221
16. Sinha, S.C., Wu D.H., "An Efficient Computational Scheme for the Analysis of Periodic Systems," Journal of Sound and Vibration, 151, 1991, pp. 91-117
17. Bauchau, O.A., Nikishkov, Y.G.: "An Implicit Floquet Analysis for Rotorcraft Stability Evaluation," presented at the AHS 54'" Annual Forum, Washington, DC, May 20-22, 1998
18. Holley, W.E., Bahrami, M., "Periodic Linear Systems Forced by White Noise with Wind Turbine Applications," presented at the Fifteenth Asilomar Conference on Circuits, Svstems, and Computers, Pacific Grove, California, November 9-l1, 1981
19. Peter, David A., "Fast Floquet Theory and Trim for Multi-Blade Rotorcraft," Journal of the American Helicopter Socier), Vol. 39, NO. 4, October 1994, pp. 82-89.