Open AccessDesign of Nonlinear Robust Rotor Current Controller for DFIG Based on Terminal Sliding Mode Control and Extended State Observer
Author(s) -
Guowei Cai,
Cheng Liu,
Deyou Yang,
Nantian Huang
Publication year - 2014
Publication title -
mathematical problems in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.262
H-Index - 62
eISSN - 1026-7077
pISSN - 1024-123X
DOI - 10.1155/2014/201938
Subject(s) - control theory (sociology) , state observer , terminal sliding mode , rotor (electric) , nonlinear system , observer (physics) , controller (irrigation) , sliding mode control , robust control , mode (computer interface) , terminal (telecommunication) , current (fluid) , doubly fed electric machine , state (computer science) , engineering , control (management) , control engineering , computer science , physics , voltage , ac power , algorithm , mechanical engineering , electrical engineering , quantum mechanics , artificial intelligence , telecommunications , agronomy , biology , operating system
As to strong nonlinearity of doubly fed induction generators (DFIG) and uncertainty of its model, a novel rotor current controller with nonlinearity and robustness is proposed to enhance fault ride-though (FRT) capacities of grid-connected DFIG. Firstly, the model error, external disturbances, and the uncertain factors were estimated by constructing extended state observer (ESO) so as to achieve linearization model, which is compensated dynamically from nonlinear model. And then rotor current controller of DFIG is designed by using terminal sliding mode variable structure control theory (TSMC). The controller has superior dynamic performance and strong robustness. The simulation results show that the proposed control approach is effective
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