Robust adaptive cooperative stabilization control for a DFIG unit

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Journal of Vibration and Shock ›› 2019, Vol. 38 ›› Issue (14) : 210-215.

Wu Zhongqiang, Li Feng, Du Chunqi, Zhang Wei

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Abstract

The H∞ adaptive collaborative stabilization of a doubly fed induction generator (DFIG) was studied based on the Hamilton function, when there were external disturbances and parameter uncertainties, in order to realize the closed-loop global stability and output synchronization of the multi machine system.The nonlinear nature of the doubly-fed wind power generator was considered, the Hamilton model for the DFIG was built, and expressed as a dissipative Hamilton system by pre-feedback.Then, the external disturbances and parameter uncertainties were considered, and a controller performing the output feedback and synchronous adaptive interference suppression was designed, so that the wind generator units can keep synchronous running.The controller has the strong adaptive ability not only for the parameter perturbation of the nonlinear wind generator unit, but also for the restraint of the external disturbance.The effectiveness of the controller was tested by the simulations of two wind generator units.

Key words

doubly fed induction generator / disturbance / uncertain parameters / cooperative stabilization

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Wu Zhongqiang, Li Feng, Du Chunqi, Zhang Wei. Robust adaptive cooperative stabilization control for a DFIG unit[J]. Journal of Vibration and Shock, 2019, 38(14): 210-215

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