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Modeling and stability analysis of low voltage DC grids
Publikationstyp
Conference Paper
Date Issued
2024-04-12
Sprache
English
Volume
100
Start Page
37
End Page
43
Citation
1. DC – Verteilnetztagung 2024
Contribution to Conference
Publisher
VDE Bezirksverein Dresden e.V.
ISBN
978-3-00-080459-5
This paper examines the stability boundaries of low voltage DC power systems utilized in renewable energy systems and electric vehicles. The study analyzes the behavior of two buck DC-DC converters
used for grid voltage regulation through droop control to supply a resistive load. The system architecture is defined using differential equations that describe both hardware components and converter control system. After linearizing the nonlinear system at its operating point, an eigenvalue and participation factor analysis is performed to quantify the sensitivity to potential instability triggers. This analytical approach is complemented by electromagnetic transient simulations to validate the linear models. The findings provide new insights into system design and operational strategies, enhancing stability in low voltage DC grids.
used for grid voltage regulation through droop control to supply a resistive load. The system architecture is defined using differential equations that describe both hardware components and converter control system. After linearizing the nonlinear system at its operating point, an eigenvalue and participation factor analysis is performed to quantify the sensitivity to potential instability triggers. This analytical approach is complemented by electromagnetic transient simulations to validate the linear models. The findings provide new insights into system design and operational strategies, enhancing stability in low voltage DC grids.
Subjects
DC Verteilnetze
MVDC LVDC
DDC Class
620: Engineering