An Offset-free Model Predictive Controller for DC/DC Boost Converter Feeding Constant Power Loads in DC Microgrids

Qianwen Xu, Frede Blaabjerg, Chuanlin Zhang, Jun Yang, Shihua Li, Jianfang Xiao

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

2 Citations (Scopus)

Abstract

The wide utilization of power electronic converters causes the constant power load stability issue in DC microgrids. This paper proposes an offset-free model predictive controller for a DC/DC boost converter feeding constant power loads. First, a baseline nonlinear model predictive controller is designed by solving a receding horizon optimization problem explicitly. Then a higher-order sliding mode observer is utilized to estimate the unknown load variation and system uncertainties. Finally an offset-free controller is integrated by the baseline controller and observer. The proposed controller achieves optimized transient dynamics and accurate tracking with large signal stability. Simulation results are presented to verify the proposed approach.
Original languageEnglish
Title of host publicationProceedings of IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society
Number of pages5
Place of PublicationPortugal
PublisherIEEE Press
Publication dateOct 2019
Pages4045-4049
ISBN (Print)978-1-7281-4879-3
ISBN (Electronic)978-1-7281-4878-6
DOIs
Publication statusPublished - Oct 2019
EventIECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society - Lisbon, Portugal
Duration: 14 Oct 201917 Oct 2019

Conference

ConferenceIECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society
CountryPortugal
CityLisbon
Period14/10/201917/10/2019
SeriesProceedings of the Annual Conference of the IEEE Industrial Electronics Society
ISSN1553-572X

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