Multi-port high-frequency AC-link and indirect matrix converters: A generalized structure

Document Type : Research Article

Author

Department of Electrical Engineering, Shahid Bahonar University of Kerman, Kerman 76169-14111, Iran

Abstract

Conventional multi-stage AC/DC/DC, AC/DC/AC, DC/DC/DC, and DC/DC/AC converters are two ports converters used to connect a resource or load to an AC or DC grid. To connect several loads or resources to a grid, these converters can easily be extended to a multi-port converter through a common DC-link, with simplified control and a reduced number of active switches. However, DC-link huge energy storage component increases the converter volume and cost and reduces its lifetime and reliability. On the other hand, most of the resources with these types of converters have fault ride-through problems and the DC-link voltage increases during the grid-side faults. The indirect matrix converter is a two-port high-frequency AC-link (HFAC) converter without any intermediate energy storage component, which can be used to connect just a single source or load to a grid. In this paper, a generalized extension of a two-port indirect matrix converter (and the other HFAC converters) to a multi-port converter is proposed. The modulation method, voltage and current gains, and the reactive power limitation of the proposed structure are also presented. Performances of the proposed structure and its modulation strategy are verified through simulation in MATLAB/SIMULINK environment.

Keywords

Main Subjects

References

References:
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Scientia Iranica
Volume 32, Issue 1
Transactions on Computer Science & Engineering and Electrical Engineering
January and February 2025 Article ID:6205

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  • Receive Date: 19 March 2022
  • Revise Date: 07 May 2023
  • Accept Date: 26 June 2023

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