Abstract
An investigation of the performance of a model-based periodic gain controller is presented for a two-bladed, variable-speed, horizontal-axis wind turbine. Performance is based on speed regulation using full-span collective blade pitch. The turbine is modeled with five degrees-of-freedom; tower fore-aft bending, nacelle yaw, rotor position, and flapwise bending of each blade. An attempt is made toquantify what model degrees-of-freedom make the system most periodic, using Floquet modal properties. This justifies the inclusion of yaw motion in the model. Optimal control ideas are adopted in the design of both periodic and constant gain full-state feedback controllers, based on a linearized periodic model. Upon comparison, no significant difference in performance is observed beetween thetwo types of control in speed regulation.
| Original language | American English |
|---|---|
| Pages (from-to) | 319-326 |
| Number of pages | 8 |
| Journal | Journal of Solar Energy Engineering, Transactions of the ASME |
| Volume | 123 |
| DOIs | |
| State | Published - 2001 |
Bibliographical note
Work performed by University of Colorado at Boulder, Boulder, ColoradoNREL Publication Number
- NREL/JA-500-32235