Disturbance observer based pitch control of wind turbines for disturbance rejection

Yuan Yuan; Xu Chen; Jiong Tang

doi:10.1117/12.2219456

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7 April 2016 Disturbance observer based pitch control of wind turbines for disturbance rejection

Yuan Yuan, Xu Chen, Jiong Tang

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Proceedings Volume 9806, Smart Materials and Nondestructive Evaluation for Energy Systems 2016; 980609 (2016) https://doi.org/10.1117/12.2219456
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2016, Las Vegas, Nevada, United States

Abstract

In this research, a disturbance observer based (DOB) control scheme is illustrated to reject the unknown low frequency disturbances to wind turbines. Specifically, we aim at maintaining the constant output power but achieving better generator speed regulation when the wind turbine is operated at time-varying and turbulent wind field. The disturbance observer combined with a filter is designed to asymptotically reject the persistent unknown time-varying disturbances. The proposed algorithm is tested in both linearized and nonlinear NREL offshore 5-MW baseline wind turbine. The application of this DOB pitch controller achieves improved power and speed regulation in Region 3 compared with a baseline gain scheduling PID collective controller both in linearized and nonlinear plant.

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Yuan Yuan, Xu Chen, and Jiong Tang "Disturbance observer based pitch control of wind turbines for disturbance rejection", Proc. SPIE 9806, Smart Materials and Nondestructive Evaluation for Energy Systems 2016, 980609 (7 April 2016); https://doi.org/10.1117/12.2219456

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