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An improved real-time economic NMPC scheme for Wind Turbine control using spline-interpolated aerodynamic coefficients

Sébastien Gros (Institutionen för signaler och system, Reglerteknik) ; R. Quirynen ; M. Diehl
Proceedings of the 53rd IEEE Annual Conference on Decision and Control, CDC 2014, Los Angeles, United States, 15-17 December 2014 (0743-1546). p. 935-940. (2015)
[Konferensbidrag, refereegranskat]

Nonlinear Model Predictive Control (NMPC) is a strong candidate for the control of large Multi-Mega Watt Wind Turbine Generators (WTG), especially when reliable Light Detection And Ranging (LIDAR) systems are available. Recently, a real-time NMPC for WTG control has been proposed, but had a limited reliability if deployed over the full WTG operating range due to the difficulty of handling the WTG aerodynamic coefficients over a large domain and of using a Gauss-Newton Hessian. In this paper, we address these two issues. A fast surface B-spline code has been developed specifically to tackle the interpolation of the aerodynamic coefficients for NMPC-based WTG control. A novel Hessian approximation for the NMPC problem is used, for which an efficient and inexpensive regularization is proposed. The approach presented is real-time feasible, and accurate over the full operating range of the WTG.

Nyckelord: Hessian approximation, real-time Economic NMPC, regularization, surface B-spline, wind turbine control

Denna post skapades 2015-07-07.
CPL Pubid: 219527


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Institutioner (Chalmers)

Institutionen för signaler och system, Reglerteknik


Elektroteknik och elektronik

Chalmers infrastruktur