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IMC robust control for high‐voltage ride‐through of doubly fed induction wind generator
Author(s) -
Ma Xiaoyang,
Yang Honggeng
Publication year - 2018
Publication title -
ieej transactions on electrical and electronic engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.254
H-Index - 30
eISSN - 1931-4981
pISSN - 1931-4973
DOI - 10.1002/tee.22692
Subject(s) - control theory (sociology) , inductance , induction generator , voltage , robustness (evolution) , robust control , engineering , rotor (electric) , doubly fed electric machine , controller (irrigation) , wind power , internal model , control system , ac power , computer science , electrical engineering , control (management) , agronomy , biochemistry , chemistry , artificial intelligence , biology , gene
To solve system parameter variation such as magnetic circuit saturation and excitation inductance of the doubly fed induction generator (DFIG) caused by grid voltage swells, a high‐voltage ride‐through (HVRT) robust control method for the DFIG based on the internal model control (IMC) controller is proposed. Through an analysis of the transient behavior of the rotor current caused by grid voltage swells, it was found that a rotor current inner loop using IMC could be established. Utilizing the H 2 ‐norm control theory, and by considering the system's robust stability and robust tracking, the IMC controller parameter of the rotor current inner loop is set. The proposed method suppresses the rotor current and the electromagnetic torque when the parameter changes. Through the simulation of a 1.5‐MW DFIG, it is verified that the proposed method can enhance its HVRT capability, exhibiting good robustness against model errors and external disturbances. © 2018 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.