Hybrid active damping of LCL-filtered grid connected converter

Ghanem, A. and Rashed, Mohamed and Sumner, M. and Elsayes, M.A. and Mansy, I.I.I. (2016) Hybrid active damping of LCL-filtered grid connected converter. In: IEEE Annual Southern Power Electronics Conference (SPEC 16), 5-8 December 2016, Auckland, New Zealand.

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Abstract

A method for hybrid active damping in power converters connected to a weak grid using an LCL filter is proposed. It uses feedback of the grid current and capacitor voltage and is derived as an equivalent to the capacitor current feedback active damping method. A co-design procedure for the grid current controller with the proposed hybrid active damping method is presented. The robustness, system bandwidth and harmonic rejection are studied. The proposed method is applied to a single grid connected converter with variable grid inductance to investigate its ability to damp different system resonance frequencies and its effectiveness is verified via frequency domain analysis and time domain simulation.

Item Type: Conference or Workshop Item (Paper)
Keywords: Hybrid active damping; Grid current control; Variable resonant damping; Weak grid
Schools/Departments: University of Nottingham, UK > Faculty of Engineering > Department of Electrical and Electronic Engineering
Related URLs:
URLURL Type
http://ewh.ieee.org/conf/spec/2016/program.pdfUNSPECIFIED
Depositing User: Burns, Rebecca
Date Deposited: 02 Feb 2017 08:23
Last Modified: 03 Feb 2017 17:18
URI: http://eprints.nottingham.ac.uk/id/eprint/40205

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