UDE-based robust control for AC/DC converters

Yeqin Wang, Yiting Dong, Beibei Ren, Qing Chang Zhong

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this paper, an uncertainty and disturbance estimator (UDE)-based robust control strategy is developed for AC/DC converters to achieve accurate DC-link voltage regulation. The models of both DC-link voltage dynamics and power delivering are derived firstly. The UDE strategy is introduced into both voltage-loop design and power-loop design to handle the uncertainties (e.g., the effects of model/parametric uncertainties), and external disturbances (e.g., variations of both amplitude and frequency in the grid, or load change). The proposed control strategy simplifies the parameter tuning and algorithm implementation, and offers a very robust disturbance rejection capability without additional synchronization units. Simulation results are provided to show the effectiveness of the proposed strategy.

Original languageEnglish
Title of host publicationProceedings
Subtitle of host publicationIECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1550-1555
Number of pages6
ISBN (Electronic)9781509066841
DOIs
StatePublished - Dec 26 2018
Event44th Annual Conference of the IEEE Industrial Electronics Society, IECON 2018 - Washington, United States
Duration: Oct 20 2018Oct 23 2018

Publication series

NameProceedings: IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society

Conference

Conference44th Annual Conference of the IEEE Industrial Electronics Society, IECON 2018
CountryUnited States
CityWashington
Period10/20/1810/23/18

Keywords

  • AC/DC converter
  • DC-link voltage regulation
  • Robust control
  • Uncertainty and disturbance estimator (UDE)

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