Open AccessSuppression method of parallel‐damping controller for DFIG
Author(s) -
Zhao Fan,
Wu Linlin,
Zhang Jiaan,
Gao Xiaodong,
Liu Hui,
Wang Huajun,
Yang Yanjie
Publication year - 2017
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2017.0456
Subject(s) - control theory (sociology) , controller (irrigation) , doubly fed electric machine , rotor (electric) , compensation (psychology) , grid , induction generator , torque , damping torque , electric power system , wind power , electric power transmission , power (physics) , generator (circuit theory) , computer science , ac power , engineering , voltage , control (management) , physics , mathematics , direct torque control , induction motor , electrical engineering , artificial intelligence , psychoanalysis , biology , psychology , geometry , quantum mechanics , agronomy , thermodynamics
With large‐scale wind power integrated into the power grid, the doubly‐fed induction generator (DFIG)‐based wind farm may occur the phenomenon of subsynchronous resonance (SSR) induced by subsynchronous controller interaction (SSCI), which is closely related to the series compensation in a transmission line. To study the mechanism of SSCI and the suppression method of SSR, a DFIG plant model is established with reference to the parameters of a North China wind farm. The Prony method is applied in the influence analysis of different factors on the system damping. An additional damping control strategy is proposed based on the rotor torque analysis method, and a parallel‐damping controller is designed. With the simulation of PSCAD, the effectiveness of the proposed strategy is verified and the results show that the parallel‐damping controller in rotor side converter has a better SSR suppress the effect than in grid side converter.