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Load-adaptive zero-phase-shift direct repetitive control for stand-alone four-leg VSI

Lidozzi, Alessandro; Solero, Luca; Crescimbini, Fabio; Ji, Chao; Zanchetta, Pericle

Authors

Alessandro Lidozzi

Luca Solero

Fabio Crescimbini

Chao Ji chao.ji@nottingham.ac.uk

Pericle Zanchetta pericle.zanchetta@nottingham.ac.uk



Abstract

This paper deals with a dedicated load adaptive phase compensation algorithm to be used in Repetitive Control based stand-alone 4-leg VSI. The plant model is achieved, its inherent modifications according to the operating point are highlighted and used to properly adapt the Repetitive Control structure. Modification of the repetitive control parameters is described to obtain the desired phase compensation capabilities achieving a Zero-Phase-Shift condition at each harmonic. This allows to increase the gain of the Repetitive Controller at high order harmonics thus yielding a better VSI output voltages with strongly reduced THD and faster dynamic response. As a consequence, the VSI output voltages are almost independent from the loads to be fed and the 4-leg VSI with the proposed Zero-Phase-Shift Direct Repetitive Control is an ideal candidate to supply sensitive loads in microgrid, in particular for stand-alone applications.

Journal Article Type Article
Publication Date Jul 28, 2016
Journal IEEE Transactions on Industry Applications
Print ISSN 0093-9994
Electronic ISSN 1939-9367
Publisher Institute of Electrical and Electronics Engineers
Peer Reviewed Peer Reviewed
Volume 52
Issue 6
APA6 Citation Lidozzi, A., Solero, L., Crescimbini, F., Ji, C., & Zanchetta, P. (2016). Load-adaptive zero-phase-shift direct repetitive control for stand-alone four-leg VSI. IEEE Transactions on Industry Applications, 52(6), doi:10.1109/TIA.2016.2595493
DOI https://doi.org/10.1109/TIA.2016.2595493
Keywords Unbalanced loads, DC-AC power converters, Distributed power generation, Harmonic distortion, Repetitive control stability
Publisher URL http://ieeexplore.ieee.org/document/7524676/
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf
Additional Information (c) 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, 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 components of this work in other works.

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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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