Samanes Pascual, JavierGubía Villabona, Eugenio2020-05-262020-11-282019J. Samanes and E. Gubia, 'Active Damping based on the Capacitor Voltage Positive-Feedback for Grid-Connected Power Converters with LCL filter,' 2019 21st European Conference on Power Electronics and Applications (EPE '19 ECCE Europe), Genova, Italy, 2019, pp. P.1-P.10, doi: 10.23919/EPE.2019.8914778.978-9-0758-1531-310.23919/EPE.2019.8914778https://academica-e.unavarra.es/handle/2454/36973The capacitor voltage positive-feedback is a widely extended active damping strategy. It can effectively damp the LCL output filter resonant poles for low ratios of resonance to sampling frequencies. However, the existing delays in the control loop limit the applicability of the capacitor-voltage positive-feedback. For high ratios of resonance to sampling frequencies, it becomes ineffective and can even destabilize the system. This limitation is overcome in this paper by adjusting the delay in the feedback path. With the delay adjustment, a robust damping can be achieved if the delays are properly considered, including the filters, and the grid impedance variations are taken into account. Simulation results validate the proposed active damping strategy.10 p.application/pdfeng© 2019 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 dampingConverter controlFrequency-domain analysisVoltage source converter (VSC)info:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/openAccessAcceso abierto / Sarbide irekia