The increasing size of modern wind turbines also increases the structural loads on the turbine caused by effects like turbulence or asymmetries in the inflowing wind field. Consequently, the use of advanced control algorithms for active load reduction has become a relevant part of current wind turbine control systems. In this paper, an H∞-norm optimal multivariable control design approach for an individual blade-pitch control law is presented. It reduces the structural loads both on the rotating and non-rotating parts of the turbine. Classical individual blade-pitch control strategies rely on single control loops with low bandwidth. The proposed approach makes it possible to use a higher bandwidth since it takes into account coupling at higher frequencies. A controller is designed for the utility-scale 2.5MW Liberty research turbine operated by the University of Minnesota. Stability and performance are verified using a highfidelity nonlinear benchmark model.
|Original language||English (US)|
|Title of host publication||Advances in Control Design Methods, Nonlinear and Optimal Control, Robotics, and Wind Energy Systems; Aerospace Applications; Assistive and Rehabilitation Robotics; Assistive Robotics; Battery and Oil and Gas Systems; Bioengineering Applications; Biomedical and Neural Systems Modeling, Diagnostics and Healthcare; Control and Monitoring of Vibratory Systems; Diagnostics and Detection; Energy Harvesting; Estimation and Identification; Fuel Cells/Energy Storage; Intelligent Transportation|
|Publisher||American Society of Mechanical Engineers|
|State||Published - 2016|
|Event||ASME 2016 Dynamic Systems and Control Conference, DSCC 2016 - Minneapolis, United States|
Duration: Oct 12 2016 → Oct 14 2016
|Name||ASME 2016 Dynamic Systems and Control Conference, DSCC 2016|
|Other||ASME 2016 Dynamic Systems and Control Conference, DSCC 2016|
|Period||10/12/16 → 10/14/16|
Bibliographical notePublisher Copyright:
Copyright © 2016 by ASME.