On using Pareto optimality to tune a linear model predictive controller for wind turbines. (March 2016)

• Record Type: Journal Article
• Authors: Odgaard, Peter Fogh; Larsen, Lars F.S.; Wisniewski, Rafael; Hovgaard, Tobias Gybel
• Is Part Of: Renewable energy. Volume 87:Part 2(2016)
• Page Start: 884
• Page End: 891
• Publication Date: 2016-03
• Subjects: Wind turbine control -- Model predictive control -- Power and structural fatigue load; Renewable energy sources -- Periodicals; Power resources -- Periodicals; Énergies renouvelables -- Périodiques; Ressources énergétiques -- Périodiques; 333.794
• DOI: 10.1016/j.renene.2015.09.067
• Languages: English
• ISSNs: 0960-1481

Abstract

Abstract: Optimal operation of wind turbines is important in order to minimize cost of energy, which is one of the major focus areas of the wind industry. Model predictive control (MPC) is a candidate for a control solution which effectively balances the different and potentially conflicting objectives, e.g. generated power and structural loads. This article presents a method on how to tune multi-objective MPC problems using Pareto curves. The approach is applied to a realistic wind turbine MPC problem, in which a joint power and tower fore-aft fatigue load optimization is performed. The controller is evaluated on a high fidelity model using a Vestas wind turbine simulator. In addition to the multiple control objectives, a number of constraints are considered as well. The evaluation shows a good potential of using model predictive control for this problem compared with an industrial baseline controller as, it approximately obtains the same mean generated power, while lowering the tower fore-aft fatigue loads. The computed Pareto curves of the trade-off between tower fore-aft fatigue load and mean generated power for a number of different weight matrices, demonstrate a potential tool for tuning MPC solutions for a wind turbine. Highlights: Model predictive control of a wind turbine for joint power and tower fore aft fatigue control. Presenting a Pareto curve based method for tuning of a given model predictive controller of a wind turbine considering fatigue loads and mean power. Evaluation an industrial high fidelity wind turbine simulator.