State-space modeling techniques of emerging grid-connected converters

Fabio Mandrile, Salvatore Musumeci*, Enrico Carpaneto, Radu Bojoi, Tomislav Dragičević, Frede Blaabjerg

*Corresponding author for this work

Research output: Contribution to journalReviewpeer-review

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Abstract

In modern power electronics-based power systems, accurate modeling is necessary in order to analyze stability and the interaction between the different elements, which are connected to it. State space modeling seems a valid approach to study the modes of a certain system and their correlation with its states. Unfortunately, this approach may require complicated calculations and it is difficult to model advanced or emerging control techniques for grid-tied converters, such as cascaded controllers (e.g., voltage and current) and virtual synchronous generators (VSGs). Moreover, this approach does not allow an easy reconfiguration of the modeled system by adding, removing of modifying certain elements. To solve such problems, this paper presents a step-by-step approach to the converter modeling based on the Component Connection Method (CCM). The CCM is explained in detail and a practical example is given, by modeling one exemplary VSG model available in the literature. The obtained model is finally validated experimentally to demonstrate the practical accuracy of such approach.

Original languageEnglish
Article number13184824
JournalEnergies
Volume13
Issue number18
Number of pages25
ISSN1996-1073
DOIs
Publication statusPublished - Sep 2020

Keywords

  • Component connection method
  • Power electronics-based systems
  • Stability analysis
  • State-space methods
  • Virtual synchronous generators

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