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Energies 2017, 10(8), 1098; https://doi.org/10.3390/en10081098

A Predictive Power Control Strategy for DFIGs Based on a Wind Energy Converter System

1
College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
2
College of Electrical and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China
3
College of Electrical and Information Engineering, Hunan Institute of Engineering, Xiangtan 411100, China
4
Institute of Research and Development, Duy Tan University, Da Nang 550000, Vietnam
5
Faculty of Electrical Engineering, Industrial University of Ho Chi Minh City, Ho Chi Minh City 700000, Vietnam
*
Author to whom correspondence should be addressed.
Academic Editor: Marco Mussetta
Received: 7 June 2017 / Revised: 20 July 2017 / Accepted: 23 July 2017 / Published: 26 July 2017
(This article belongs to the Special Issue Wind Generators Modelling and Control)
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Abstract

A feasible control strategy is proposed to control a doubly fed induction generator based on the wind energy converter system (DFIG-WECS). The main aim is to enhance the steady state and dynamic performance under the condition of the parameter perturbations and external disturbances and to satisfy the stator power response of the system. Within the proposed control method, the control scheme for the rotor side converter (RSC) is developed on the model predictive control. Firstly, the self-adaptive reference trajectory is established from the deduced discrete state-space equation of the generator. Then, the rotor voltage is calculated by minimizing the global performance index under the current prediction steps at the sampling instant. Through the control scheme for the grid side converter (GSC) and wind turbine, we have re-applied the conventional control. The effectiveness of the proposed control strategy is verified via time domain simulation of a 150 kW-575 V DFIG-WECS using Matlab/Simulink. The simulation result shows that the control of the DFIG with the proposed control method can enhance the steady and dynamic response capability better than the conventional ones when the system faces errors due to the parameter perturbations, external disturbances and the rotor speed. View Full-Text
Keywords: doubly fed induction generator (DFIG); wind energy converter system (WECS); self-adaptive model predictive control; predictive power control doubly fed induction generator (DFIG); wind energy converter system (WECS); self-adaptive model predictive control; predictive power control
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Yang, X.; Liu, G.; Li, A.; Dai, L.V. A Predictive Power Control Strategy for DFIGs Based on a Wind Energy Converter System. Energies 2017, 10, 1098.

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