Stability Analysis of a Variable-Speed Wind Turbine

Gunjit S. Bir; Alan D. Wright; C. P. Sandy Butterfield

Stability Analysis of a Variable-Speed Wind Turbine

Gunjit S. Bir
, Alan D. Wright
, C. P. Sandy Butterfield

Center for Energy Conversion and Storage Systems

National Renewable Energy Laboratory

Research output: Contribution to conference › Paper › peer-review

10 Scopus Citations

Abstract

This paper examines the elastomechanical stability of a four-bladed wind turbine over a specific rotor speed range. Stability modes, frequencies, and dampings are extracted using a specialized modal processor developed at NREL that post-processes the response data generated by the ADAMS’ simulation code. The processor can analyze a turbine with an arbitrary number of rotor blades and offers a novel capability of isolating stability modes that become locked at a single frequency. Results indicate that over a certain rotor speed range, the tower lateral mode and the rotor regressive in-plane mode coalesce, resulting in a self-excited instability. Additional results show the effect of tower and nacelle parameters on the stability boundaries.

Original language	American English
Pages	289-300
Number of pages	12
State	Published - 1997
Event	35th Aerospace Sciences Meeting and Exhibit, 1997 - Reno, United States Duration: 6 Jan 1997 → 9 Jan 1997

Conference

Conference	35th Aerospace Sciences Meeting and Exhibit, 1997
Country/Territory	United States
City	Reno
Period	6/01/97 → 9/01/97

Bibliographical note

Publisher Copyright:
© 1997 by the American Institute of Aeronautics and Astronautics. All rights reserved.

NLR Publication Number

NREL/CP-23289

Cite this

@conference{17c463d7904046e0bc1535d4e4d52873,

title = "Stability Analysis of a Variable-Speed Wind Turbine",

abstract = "This paper examines the elastomechanical stability of a four-bladed wind turbine over a specific rotor speed range. Stability modes, frequencies, and dampings are extracted using a specialized modal processor developed at NREL that post-processes the response data generated by the ADAMS{\textquoteright} simulation code. The processor can analyze a turbine with an arbitrary number of rotor blades and offers a novel capability of isolating stability modes that become locked at a single frequency. Results indicate that over a certain rotor speed range, the tower lateral mode and the rotor regressive in-plane mode coalesce, resulting in a self-excited instability. Additional results show the effect of tower and nacelle parameters on the stability boundaries.",

author = "Bir, \{Gunjit S.\} and Wright, \{Alan D.\} and \{Sandy Butterfield\}, \{C. P.\}",

note = "Publisher Copyright: {\textcopyright} 1997 by the American Institute of Aeronautics and Astronautics. All rights reserved.; 35th Aerospace Sciences Meeting and Exhibit, 1997 ; Conference date: 06-01-1997 Through 09-01-1997",

year = "1997",

language = "American English",

pages = "289--300",

}

TY - CONF

T1 - Stability Analysis of a Variable-Speed Wind Turbine

AU - Bir, Gunjit S.

AU - Wright, Alan D.

AU - Sandy Butterfield, C. P.

PY - 1997

Y1 - 1997

N2 - This paper examines the elastomechanical stability of a four-bladed wind turbine over a specific rotor speed range. Stability modes, frequencies, and dampings are extracted using a specialized modal processor developed at NREL that post-processes the response data generated by the ADAMS’ simulation code. The processor can analyze a turbine with an arbitrary number of rotor blades and offers a novel capability of isolating stability modes that become locked at a single frequency. Results indicate that over a certain rotor speed range, the tower lateral mode and the rotor regressive in-plane mode coalesce, resulting in a self-excited instability. Additional results show the effect of tower and nacelle parameters on the stability boundaries.

AB - This paper examines the elastomechanical stability of a four-bladed wind turbine over a specific rotor speed range. Stability modes, frequencies, and dampings are extracted using a specialized modal processor developed at NREL that post-processes the response data generated by the ADAMS’ simulation code. The processor can analyze a turbine with an arbitrary number of rotor blades and offers a novel capability of isolating stability modes that become locked at a single frequency. Results indicate that over a certain rotor speed range, the tower lateral mode and the rotor regressive in-plane mode coalesce, resulting in a self-excited instability. Additional results show the effect of tower and nacelle parameters on the stability boundaries.

UR - https://www.scopus.com/pages/publications/84983112929

M3 - Paper

AN - SCOPUS:84983112929

SP - 289

EP - 300

T2 - 35th Aerospace Sciences Meeting and Exhibit, 1997

Y2 - 6 January 1997 through 9 January 1997

ER -

Stability Analysis of a Variable-Speed Wind Turbine

Abstract

Conference

Bibliographical note

NLR Publication Number

Other files and links

Fingerprint

Cite this