State-Space Modeling Techniques of Emerging Grid-Connected Converters

In modern power electronics-based power systems, accurate modeling is necessary in<br />order to analyze stability and the interaction between the different elements, which are connected to<br />it. State space modeling seems a valid approach to study the modes of a certain system and th...

Full description

Bibliographic Details
Main Authors: Fabio Mandrile, Salvatore Musumeci, Enrico Carpaneto, Radu Bojoi, Tomislav Dragicevic, Frede Blaabjerg
Format: Article
Language:English
Published: MDPI AG 2020-09-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/13/18/4824
Description
Summary:In modern power electronics-based power systems, accurate modeling is necessary in<br />order to analyze stability and the interaction between the different elements, which are connected to<br />it. State space modeling seems a valid approach to study the modes of a certain system and their<br />correlation with its states. Unfortunately, this approach may require complicated calculations and<br />it is difficult to model advanced or emerging control techniques for grid-tied converters, such as<br />cascaded controllers (e.g., voltage and current) and virtual synchronous generators (VSGs). Moreover,<br />this approach does not allow an easy reconfiguration of the modeled system by adding, removing of<br />modifying certain elements. To solve such problems, this paper presents a step-by-step approach to<br />the converter modeling based on the Component Connection Method (CCM). The CCM is explained<br />in detail and a practical example is given, by modeling one exemplary VSG model available in<br />the literature. The obtained model is finally validated experimentally to demonstrate the practical<br />accuracy of such approach.
ISSN:1996-1073