Sub-synchronous resonance damper based on the stator voltage feedback for DFIG wind turbines
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- AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-110956RB-I00/ES/
- ES/1PE/DPI2016-80641-R
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Abstract
Doubly-fed induction generator (DFIG) wind turbines connected to series compensated grids are prone to sub-synchronous resonance (SSR) instability. In this paper we develop a model to analyze SSRs and propose a damping strategy based on the stator voltage feedback that is implemented in the rotor-side converter (RSC). The control strategy is based on local variables that are already measured, so it is applicable to any new or existing DFIG wind turbine. Simulation results performed fora real wind farm where sub-synchronous resonances were reported validate the proposed damping strategy.
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