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Stability analysis and a hybrid controller design of grid‐connected offshore wind farm through a VSC‐HVDC transmission link
Author(s) -
Srikakulapu Ramu,
U Vinatha
Publication year - 2019
Publication title -
asian journal of control
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.769
H-Index - 53
eISSN - 1934-6093
pISSN - 1561-8625
DOI - 10.1002/asjc.2194
Subject(s) - offshore wind power , control theory (sociology) , controller (irrigation) , voltage source , voltage controller , transmission system , grid , electric power system , engineering , maximum power transfer theorem , fault (geology) , matlab , pid controller , transmission (telecommunications) , voltage , control engineering , wind power , computer science , power (physics) , electrical engineering , control (management) , mathematics , temperature control , operating system , geometry , quantum mechanics , physics , voltage droop , seismology , geology , artificial intelligence , biology , agronomy
This paper proposes a hybrid controller which is a combination sliding mode control and PI control techniques for AC grid integrated offshore wind farm (OSWF) with voltage source converter ‐ high voltage direct current system. The controller must be capable of controlling AC voltage, DC‐link voltage, reactive power and effective power transfer. To examine the FRT capability, a symmetrical fault is applied at onshore AC grid side and compared the performances of the studied system based on the hybrid and PI controllers. The dynamic modelling and linearized system by state‐space modelling for the studied system are explained in detail. The small signal stability analysis and controller stability are observed with the help of the eigenvalue analysis. The analysis of the studied system with a hybrid and conventional controllers are conducted in the software environment of the MATLAB/SIMULINK . The effect of parameter uncertainty on total system stability is examined with the help of eigenmatrix of the studied system.