Abstract
The combination of variable speed operation and yaw control for power regulation is an interesting option for two-bladed teetered rotor wind turbines. The Italian Gamma 60 turbine, for example, is a 60 meter diameter turbine with these features. The 7.6 m diameter tettered rotor test facility at the University of Texas at El Paso is in the process of being fitted with a mechanical variable speedtransmission and power electronics for an induction generator to investigate these two variable speed options. The test bed also has a yaw drive system that is capable of regulating power and loss of load overspeed by passive yaw control. One significant finding of the control study presented in this paper is an indication that suitable combinations of shaft uptilt and thrust offset togetherwith variable speed operation may allow the design of a downwind, free-yaw turbine with passive yaw control for overspeed protection. The results are preliminary, however, and further investigation is required to determine the free yaw characteristics over the full range of wind speeds.
| Original language | American English |
|---|---|
| Pages | 187-193 |
| Number of pages | 7 |
| State | Published - 1995 |
| Event | Windpower '95: Annual Conference and Exhibition of the American Wind Energy Association - Washington, D.C. Duration: 26 Mar 1995 → 30 Mar 1995 |
Conference
| Conference | Windpower '95: Annual Conference and Exhibition of the American Wind Energy Association |
|---|---|
| City | Washington, D.C. |
| Period | 26/03/95 → 30/03/95 |
Bibliographical note
Work performed by the University of Texas at El Paso, El Paso, Texas and Washington University, St. Louis, MissouriNREL Publication Number
- NREL/CP-21805