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Towards new industrial software for advanced wind turbine control

Towards new industrial software for advanced wind turbine control. EWEC 2011, Brussels, March 2011 Stoyan Kanev. Background. Advanced wind turbine control can achieve further reduction of the cost of wind energy by: Maximizing power production

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Towards new industrial software for advanced wind turbine control

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  1. Towards new industrial software for advanced wind turbine control EWEC 2011, Brussels, March 2011 Stoyan Kanev

  2. Background • Advanced wind turbine control can achieve further reduction of the cost of wind energy by: • Maximizing power production • Minimizing ultimate and fatigue loads (blades, drivetrain, nacelle, tower) • Weight reduction • Upscaling • Decreased maintenance costs (higher availability)

  3. Background • Present commercial controller ECN-CDT is designed to minimize blade pitch excursions, featuring: • Reduced pitch actuator loading, • Power losses (can be rather large!) • No fatigue load reduction on blades/tower • Project goal: by allowing more actuator activity, achieve increased power production and reduced loads using advanced control • Partners: DotX, ECN, XEMC-Darwind, MPS

  4. Overview of NCM tool • NCM wind turbine model for control purposes • Turbine state and wind estimator • NCM controller

  5. NCM turbine model • Structural dynamics: first modes of the drive-train and the tower dynamics in fore-aft and sideward direction • Aerodynamics: • thrust and torque coefficients defined per blade • blade effective forces and torques • dynamic inflow effects by lead-lag filtering of pitch angle before entering CQ and CT • Wind modelling: • blade-effective winds (turbulence/rot. sampling) • deterministic wind effects

  6. Results: NCM model vs. Phatas (XV90)

  7. NCM observer

  8. Results: NCM observer • Data from Phatas XV90 simulation with ECN-CDT • Simulated load cases

  9. Results: NCM observer

  10. Results: NCM baseline vs. CDT controller Preliminary results with • Simulations in NCM environment • XV90 model • DLC 1.2 (NTM, wind speeds 9, 12, 15, 20 m/s) • Comparison b/n • ECN-CDT, and • NCM baseline controller

  11. Results: NCM baseline vs. CDT controller

  12. Results: NCM baseline vs. CDT controller -6,5% -19%

  13. Conclusions • Starting point in NCM controller development is power production quality and loads reduction • Status NCM baseline controller: 90% ready; drivetrain damping, IPC, and actuator constraints handling yet to be implemented [02/2010] • Next: • C-code, coupling to aeroelastic tools via DLLs • Loadset computations with Phatas and Bladed • Prototype implementation

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