Large signal stability analysis of hybrid AC/DC microgrids when a single-phase-to-ground fault occurs

X Liu, Y Zhang, X Song, Y Ju - Electronics, 2024 - mdpi.com
Islanded hybrid AC/DC microgrids lack support for a large grid, and the negative incremental
impedance of constant power loads (CPLs) aggravates the poor anti-disturbance capability …

[HTML][HTML] An on-line sensor fault detection system for an AC microgrid secondary control based on a sliding mode observer model

J Bravo, L Ortiz, E García, M Ruiz, A Aguila - Energies, 2024 - mdpi.com
The current study proposes a strategy for sensing fault detection in the secondary control of
an isolated Microgrid based on a high-order Sliding Mode Robust Observers design. The …

Adaptive Fault Detection for Grid-Forming Inverters

G Intriago, Y Zhang - IEEE Access, 2024 - ieeexplore.ieee.org
This work introduces a residual-based adaptive threshold for detecting faults in grid-forming
inverters in AC microgrids islanded from the main grid. The inverters are modeled as a …

Fast and distortion-free short-circuit detection and protection scheme with fault ride-through capability applied to four-leg vsi

E Oggier, GG Oggier, F Botterón… - … on Power Electronics, 2023 - ieeexplore.ieee.org
The three-phase four-leg (3P4L) voltage source inverter (VSI) with LC output filter is a
suitable transformer-less topology to feed nonlinear and unbalanced loads in four-wire …

Impedance-Based Approach for Locating Short-Circuit Faults in Inverter-Based Active Distribution Networks

M Behbahanipour, SF Zarei, M Shateri - International Journal of …, 2024 - ieco.usb.ac.ir
This paper proposes an impedance-based approach for locating short-circuit faults in active
distribution networks (DNs). This topic is a crucial task for operators, especially in grids with …