Nonlinear PI and Finite-time Control for DC-DC Converter Based on Exact Feedback Linearization

Cong Yuan, Yigeng Huangfu, Rui Ma, Ben Zhao, Hao Bai

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

3 Scopus citations

Abstract

Based on differential geometry theory, a nonlinear PI and global finite-time controller (PI+FTC) under exact feedback linearization (EFL) is proposed in this paper. Firstly, the coordinate transformation equation is derived by the affine nonlinear model of the buck converter, and the Brunovsky canonical form of the buck converter is obtained. Then, according to the canonical form, PI+FTC is designed. Furthermore, the Lyapunov stability principle is applied to prove that the control strategy is stable. Finally, the results of simulation and experiment indicate that the proposed method has a shorter setting time and stronger robustness than the linear PI controller when the input voltage and load are disturbed. The proposed control strategy realizes time optimal control and is also applicable for the stabilization of other dc-dc converters.

Original languageEnglish
Title of host publicationProceedings
Subtitle of host publicationIECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society
PublisherIEEE Computer Society
Pages6398-6403
Number of pages6
ISBN (Electronic)9781728148786
DOIs
StatePublished - Oct 2019
Event45th Annual Conference of the IEEE Industrial Electronics Society, IECON 2019 - Lisbon, Portugal
Duration: 14 Oct 201917 Oct 2019

Publication series

NameIECON Proceedings (Industrial Electronics Conference)
Volume2019-October

Conference

Conference45th Annual Conference of the IEEE Industrial Electronics Society, IECON 2019
Country/TerritoryPortugal
CityLisbon
Period14/10/1917/10/19

Keywords

  • dc-dc converter
  • finite time control
  • Lyapunov stability
  • nonlinear PI control

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