Digital Dead-Beat and Repetitive combined control for stand-alone four-leg VSI

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

Abstract

This paper deals with a newly conceived combined control topology. Dead-Beat and Repetitive controllers are proposed to operate jointly in a 4-leg VSI for stand-alone applications. In such mode of operation, dedicated controller has to regulate the inverter output voltages, which are measured at the output of the power filter. In the proposed combined control, the Dead-Beat rapidly compensates the output voltage variations due to load changes; whereas, the Repetitive Control provides the required harmonic compensation capabilities that are mandatory to comply with the Standards, when balanced and unbalanced non-linear loads have to be fed. As a consequence, high dynamic performance is assured, as well harmonics in the output voltages are almost absent. In fact, the achieved experimental tests have verified that resulting output voltage THD is around 0.5% also in case of highly unbalanced and non-linear loads, compensating also the distortion introduced by the switches dead-time.

Citation

Lidozzi, A., Ji, C., Solero, L., Zanchetta, P., & Crescimbini, F. (in press). Digital Dead-Beat and Repetitive combined control for stand-alone four-leg VSI. IEEE Transactions on Industry Applications, https://doi.org/10.1109/TIA.2017.2734049

• Journal Article Type: Article
• Acceptance Date: Jun 30, 2017
• Online Publication Date: Jul 31, 2017
• Deposit Date: Oct 13, 2017
• Journal: IEEE Transactions on Industry Applications
• Print ISSN: 0093-9994
• Electronic ISSN: 0093-9994
• Publisher: Institute of Electrical and Electronics Engineers
• Peer Reviewed: Peer Reviewed
• DOI: https://doi.org/10.1109/TIA.2017.2734049
• Public URL: https://nottingham-repository.worktribe.com/output/875037
• Publisher URL: http://ieeexplore.ieee.org/document/7997785/
• Additional Information: 2017 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