Print Email Facebook Twitter Enhanced Kalman filtering for a 2D CFD NS wind farm flow model Title Enhanced Kalman filtering for a 2D CFD NS wind farm flow model Author Doekemeijer, B.M. (TU Delft Team Raf Van de Plas) van Wingerden, J.W. (TU Delft Team Raf Van de Plas) Boersma, S. (TU Delft Team Raf Van de Plas) Pao, L. Y. (University of Colorado) Date 2016 Abstract Wind turbines are often grouped together for financial reasons, but due to wake development this usually results in decreased turbine lifetimes and power capture, and thereby an increased levelized cost of energy (LCOE). Wind farm control aims to minimize this cost by operating turbines at their optimal control settings. Most state-of-the-art control algorithms are open-loop and rely on low fidelity, static flow models. Closed-loop control relying on a dynamic model and state observer has real potential to further decrease wind's LCOE, but is often too computationally expensive for practical use. In this paper two time-efficient Kalman filter (KF) variants are outlined incorporating the medium fidelity, dynamic flow model "WindFarmSimulator" (WFSim). This model relies on a discretized set of Navier-Stokes equations in two dimensions to predict the flow in wind farms at low computational cost. The filters implemented are an Ensemble KF and an Approximate KF. Simulations in which a high fidelity simulation model represents the true wind farm show that these filters are 101 - 102 times faster than a regular KF with comparable or better performance, correcting for wake dynamics that are not modeled in WFSim (noticeably, wake meandering and turbine hub effects). This is a first big step towards real-time closed-loop control for wind farms. To reference this document use: http://resolver.tudelft.nl/uuid:b0af749f-67a1-4f72-85bf-8392e309ffad DOI https://doi.org/10.1088/1742-6596/753/5/052015 Publisher IOP Publishing, Bristol, UK Source Journal of Physics - Conference Series: TORQUE 2016: The Science of Making Torque from Wind, 753 (D. Control & Supporting Technologies) Event TORQUE 2016: 6th International Conference "The Science of Making Torque from Wind", 2016-10-05 → 2016-10-07, Technische Universität München (TUM), Campus Garching, Munich, Germany Series Journal of Physics - Conference Series, 1742-6588, 753 Part of collection Institutional Repository Document type conference paper Rights © 2016 B.M. Doekemeijer, J.W. van Wingerden, S. Boersma, L. Y. Pao Files PDF pdf.pdf 2 MB Close viewer /islandora/object/uuid:b0af749f-67a1-4f72-85bf-8392e309ffad/datastream/OBJ/view