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Hybrid active damping of LCL-filtered grid connected converter

Ghanem, A.; Rashed, Mohamed; Sumner, M.; Elsayes, M.A.; Mansy, I.I.I.

Authors

A. Ghanem

Mohamed Rashed eezmr1@exmail.nottingham.ac.uk

MARK SUMNER mark.sumner@nottingham.ac.uk
Professor of Electrical Energy Systems

M.A. Elsayes

I.I.I. Mansy



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.

Citation

Ghanem, A., Rashed, M., Sumner, M., Elsayes, M., & Mansy, I. (2016). Hybrid active damping of LCL-filtered grid connected converter

Conference Name IEEE Annual Southern Power Electronics Conference (SPEC 16)
End Date Dec 8, 2016
Acceptance Date Jul 30, 2016
Publication Date Dec 6, 2016
Deposit Date Feb 2, 2017
Publicly Available Date Feb 2, 2017
Peer Reviewed Peer Reviewed
Keywords Hybrid active damping; Grid current control; Variable resonant damping; Weak grid
Public URL http://eprints.nottingham.ac.uk/id/eprint/40205
Related Public URLs http://ewh.ieee.org/conf/spec/2016/program.pdf
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf

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Hybrid active damping of LCL-filtered grid connected converter.pdf (1.8 Mb)
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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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