Rosado Galparsoro, LeyreSamanes Pascual, JavierGubía Villabona, EugenioLópez Taberna, Jesús2022-01-212022-06-152021L. Rosado, J. Samanes, E. Gubía and J. López, 'Robust Active Damping Strategy for DFIG Wind Turbines', in IEEE Transactions on Power Electronics, vol. 36, no. 12, pp. 14525-14538, Dec. 2021, doi: 10.1109/TPEL.2021.3089282.0885-899310.1109/TPEL.2021.3089282https://academica-e.unavarra.es/handle/2454/41874Doubly fed induction generators (DFIGs) with an LCL filter are widely used for wind power generation. In these energy conversion systems, there is an interaction between the grid-side converter (GSC) and the rotor-side converter (RSC) control loops, the generator and the LCL filter that must be properly modeled. Such interaction between the GSC and the RSC proves to have a significant influence on the stability. Several active damping (AD) methods for grid-connected converters with an LCL filter have been proposed, nevertheless, the application of these techniques to a DFIG wind turbine is not straightforward, as revealed in this article. To achieve a robust damping irrespective of the grid inductance, this article proposes an AD strategy based on the capacitor current feedback and the adjustment of the control delays to emulate a virtual impedance, in parallel with the filter capacitor, with a dominant resistive component in the range of possible resonance frequencies. This work also proves that, by applying the AD strategy in both converters simultaneously, the damping of the system resonant poles is maximized when a specific value of the grid inductance is considered. Experimental results show the interaction between the GSC and the RSC and validate the proposed AD strategy. © 1986-2012 IEEE.14 p.application/pdfeng© 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other work.Active damping (AD)Doubly fed induction generator (DFIG)LCL filterStability analysisVirtual impedanceinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccessAcceso abierto / Sarbide irekia