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

Xiaoliang Yang, Guorong Liu, Anping Li and Le Van Dai
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Xiaoliang Yang: College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
Guorong Liu: College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
Anping Li: College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
Le Van Dai: Institute of Research and Development, Duy Tan University, Da Nang 550000, Vietnam

Energies, 2017, vol. 10, issue 8, 1-24

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.

Keywords: doubly fed induction generator (DFIG); wind energy converter system (WECS); self-adaptive model predictive control; predictive power control (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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