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Enhanced Proportional-Resonant Current Controller for Unbalanced Stand-alone DFIG-based Wind Turbines

Lookup NU author(s): Dr Van-Tung Phan


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An enhanced control strategy for variable-speed unbalanced stand-alone doubly-fed induc-tion generator-based wind energy conversion systems is proposed in this paper. The control scheme is applied to the rotor-side converter to eliminate stator voltage imbalance. The proposed current control-ler is developed based on the proportional-resonant regulator, which is implemented in the stator sta-tionary reference frame. The resonant controller is tuned at the stator synchronous frequency to achieve zero steady-state errors in rotor currents without decomposing the positive and negative se-quence components. The computational complexity of the proposed control algorithm is greatly sim-plified, and control performance is significantly improved. Finally, simulations and experimental re-sults are presented to verify the feasibility and the robustness of the proposed control scheme.

Publication metadata

Author(s): Phan VT, Lee HH

Publication type: Article

Publication status: Published

Journal: Journal of Electrical Engineering and Technology

Year: 2010

Volume: 5

Issue: 3

Pages: 443-450

ISSN (print): 1975-0102

Publisher: The Korean Institute of Electrical Engineers


DOI: 10.5370/JEET.2010.5.3.443


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