Augmentation of Generalized Multivariable Grid-Forming Control for Power Converters with Cascaded Controllers

Meng Chen*, Dao Zhou, Ali Tayyebi, Eduardo Prieto-Araujo, Florian Dörfler, Frede Blaabjerg

*Corresponding author for this work

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

1 Citation (Scopus)
60 Downloads (Pure)

Abstract

The classic design of grid-forming control strategies for power converters rely on the stringent assumption of the timescale separation between DC and AC states and their corresponding control loops, e.g., AC and DC loops, power and cascaded voltage and current loops, etc. This paper proposes a multi-input multi-output based grid-forming (MIMO-GFM) control for the power converters using a multivariable feedback structure. First, the MIMO-GFM control couples the AC and DC loops by a general multivariable control transfer matrix. Then, the parameters design is transformed into a standard fixed-structure H∞ synthesis. By this way, all the loops can be tuned simultaneously and optimally without relying on the assumptions of loop decoupling. Therefore, a superior and robust performance can be achieved. Experimental results verify the proposed method.
Original languageEnglish
Title of host publicationProceedings of the 2022 International Power Electronics Conference (IPEC-Himeji 2022- ECCE Asia)
Number of pages7
Place of PublicationHimeji, Japan
PublisherIEEE
Publication dateMay 2022
Pages998-1004
Article number9807103
ISBN (Print)978-1-6654-1631-3
ISBN (Electronic)978-4-8868-6425-3
DOIs
Publication statusPublished - May 2022
Event2022 International Power Electronics Conference (IPEC-Himeji 2022- ECCE Asia) - Himeji, Japan
Duration: 15 May 202219 May 2022

Conference

Conference2022 International Power Electronics Conference (IPEC-Himeji 2022- ECCE Asia)
LocationHimeji, Japan
Period15/05/202219/05/2022

Keywords

  • cascaded controllers
  • fixted-structure mathcal{H}-{infty} synthesis
  • loops coupling
  • multi-input multi-output based grid-forming (MIMO-GFM) control

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