Loading [MathJax]/extensions/MathZoom.js
Impedance-based Stability Analysis of Cascaded Dual-Active-Bridge Converters in Smart Transformer Microgrids | IEEE Conference Publication | IEEE Xplore

Impedance-based Stability Analysis of Cascaded Dual-Active-Bridge Converters in Smart Transformer Microgrids


Abstract:

The recent advances in energy production and consumption have reshaped the electrical grid scenario. The trend is showing how power electronics converters are becoming in...Show More

Abstract:

The recent advances in energy production and consumption have reshaped the electrical grid scenario. The trend is showing how power electronics converters are becoming increasingly important for the electrical energy transmission and distribution. In this framework, Smart Transformers (ST) can be adopted as interface between medium- and low-voltage grids, with the benefits of additional controllability and services. The dc-dc stage of ST provides the galvanic isolation and availability of DC links of MVDC and LVDC sides. This paper deals with the stability analysis of the cascaded connection case containing the dc-dc converter in ST and the one at the LVDC side, where the dual-active-bridge converters are selected as the dc-dc converters for investigation. The results of the impedance-based analysis show how the system stability can be challenged by the tuning of the voltage controllers.
Date of Conference: 03-05 October 2022
Date Added to IEEE Xplore: 23 November 2022
ISBN Information:
Conference Location: Rome, Italy

I. Introduction

The development of renewable energy sources and a general stimulus towards higher efficiency has increased the importance of the power electronics for electrical grid applications. In this context, the smart transformer (ST) [1] is a promising technology for the interface between medium- and low-voltage grids, which allows increasing the grid services, ultimately addressing the grid voltage stability and enabling the integration of dc loads [2]. In addition to the mains-connected application, power electronics is being extensively adopted in the areas of energy transmission [3] and the transportation electrification of large vehicles [4]–[7].

References

References is not available for this document.