Continuous-time tube-based explicit model predictive control for collective pitching of wind turbines

Ahmed Lasheen, Mohamed S. Saad, Hassan M. Emara and Abdel Latif Elshafei

Energy, 2017, vol. 118, issue C, 1222-1233

Abstract: This paper introduces an extension to continuous time model predictive control to take care of time varying systems by adopting a tube-based approach. The proposed controller can be formulated as a multi-parametric quadratic program that can be solved offline. Therefore, the computational time is reduced. The proposed controller is used to control the pitch angles of large wind turbines in order to regulate the generator speed and power while operating above the turbines rated wind speeds. The proposed controller has two merits. First, it has a fast execution time due to its explicit nature. Second, it is robust against the uncertainties due to the system nonlinearities (as it adopts a tube-based approach). The performance of the proposed controller is compared to a gain-scheduled PI controller which is commonly adopted in industry. Simulation results, based on a benchmark of a typical 5-MW offshore wind turbine, demonstrate the superiority of the proposed predictive controller.

Keywords: Collective pitch control; Predictive control; Tube-based continuous model predictive control; Explicit continuous model predictive control; Time varying systems (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (8)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:118:y:2017:i:c:p:1222-1233

DOI: 10.1016/j.energy.2016.11.002

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