Fractional-order time delay compensation in deadbeat control for power converters

Zuo Wang, Keliang Zhou, Shihua Li, Yongheng Yang

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Abstrakt

Deadbeat control scheme is widely implemented in the control of power electronics and electrical drives, which is of simplification, rapidity and flexibility. However, owing to its sensitive to model uncertainties and unmodeled dynamics, the practical control performance is severely degraded and sometimes even unstable. Uncertain time delay is a typical case of model uncertainties, which severely deteriorates the control accuracy and dramatically reduce the system stability margin of deadbeat control. In this paper, the time delay effects on the control performance and system stability are investigated. A fractional-order Smith Predictor based solution is proposed to compensate arbitrary time delay with high accuracy, simple structure, and good robustness. The composite control scheme offers accurate time delay compensations in digital implementation and considerably enhances the robustness of the control system, which will effectively promote widespread applications of the deadbeat scheme. An application example of three-phase inverter system is explored to comprehensively illustrate the feasibility and effectiveness of the proposed scheme.
OriginalsprogEngelsk
TitelProceedings of the 2018 IEEE International Power Electronics and Application Conference and Exposition, PEAC 2018
Antal sider6
ForlagIEEE Press
Publikationsdatonov. 2018
Sider1-6
Artikelnummer8590593
ISBN (Trykt)978-1-5386-6055-3
ISBN (Elektronisk)978-1-5386-6054-6
DOI
StatusUdgivet - nov. 2018
Begivenhed2018 IEEE International Power Electronics and Application Conference and Exposition, PEAC 2018 - Shenzhen, Kina
Varighed: 4 nov. 20187 nov. 2018

Konference

Konference2018 IEEE International Power Electronics and Application Conference and Exposition, PEAC 2018
LandKina
ByShenzhen
Periode04/11/201807/11/2018
SponsorChina Power Supply Society (CPSS), IEEE Power Electronics Society (PELS)

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  • Citationsformater

    Wang, Z., Zhou, K., Li, S., & Yang, Y. (2018). Fractional-order time delay compensation in deadbeat control for power converters. I Proceedings of the 2018 IEEE International Power Electronics and Application Conference and Exposition, PEAC 2018 (s. 1-6). [8590593] IEEE Press. https://doi.org/10.1109/PEAC.2018.8590593