Wide frequency range active damping of LCL-filtered grid connected converters

Ghanem, Abdelhady and Rashed, Mohamed and Sumner, Mark and El-Sayes, M.A. and Mansy, I.I.I. (2018) Wide frequency range active damping of LCL-filtered grid connected converters. In: 9th International Conference on Power Electronics, Machines and Drives (PEMD 2018), 17-19 April 2018, Liverpool, UK.

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Abstract

It can be challenging to guarantee the stability of grids with many converters with LCL filters connected due to the presence of multiple resonances within the system. This paper presents an active damping technique to mitigate multiple resonance effects and harmonics in power converters connected to weak grids. The proposed technique employs grid current and capacitor voltage feedback to achieve active damping for a wide range of multiple resonance frequencies. The effectiveness of the proposed wide frequency active damping and improved controller stability are demonstrated through frequency domain analysis and experimental results for single and parallel grid connected converters.

Item Type: Conference or Workshop Item (Paper)
Keywords: Parallel converters, Weak grid, Multi-resonance, Active damping
Schools/Departments: University of Nottingham, UK > Faculty of Engineering > Department of Electrical and Electronic Engineering
Depositing User: Burns, Rebecca
Date Deposited: 26 Apr 2018 15:04
Last Modified: 08 May 2020 11:46
URI: http://eprints.nottingham.ac.uk/id/eprint/51426

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