Robust Adaptive Tracking Control of Individual Pitch for Wind Turbines

doi:10.11930/j.issn.10.11930.2015.6.14

Abstract

Abstract: The torques acting on the blades and the aerodynamic-caused unbalanced loads are analyzed for nonlinear motor-driven blade system. Based on the angular momentum theorem, a dynamic model is established for the uncertain time-variable system. A robust adaptive tracking controller of individual pitch is designed for wind turbine, and the adaptive algorithm of undated parameters is introduced. The stability of the blade control system is proved by using Lyapunov stability theory. In order to verify the effectiveness of the control strategy, a wind turbine blade dynamics simulation model is built by using Matlab/Simulink software. The simulation results show that the designed controller can quickly and accurately achieve the individual pitch angle tracking control task under the condition of uncertain time-variable system parameters and the impact of unbalanced loads. The controller is proved to have good and robust control effect for complex nonlinear blade model.

Key words: wind turbine, dynamics, individual variable pitch, adaptive, Lyapunov stability

CLC Number:

TM614

CUI Shuangxi, WANG Weiqing. Robust Adaptive Tracking Control of Individual Pitch for Wind Turbines[J]. Electric Power, 2015, 48(6): 14-19.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.10.11930.2015.6.14

https://www.electricpower.com.cn/EN/Y2015/V48/I6/14

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