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David Frey

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Open access Sep 2026

A Solid-State Transformer Architecture Based on Quadruple Active Bridge Converters

With the expanding adoption of renewable energy sources and DC loads, future electrical power systems are gradually heading toward medium-voltage direct current (MVDC) architectures. This article presents and analyses a modular isolated DC/DC converter topology incorporating energy storage for the interconnection of MV...

A. Alouani, David Frey, Jean-Paul Gaubert et al. · 0 citations
Open access Oct 2026

Adaptive Neural Network-Based Virtual Flux Estimation for Sensorless Deadbeat Control of Grid-Connected Modular Multilevel Converters

This paper presents a grid-voltage-sensorless control scheme for a grid-connected modular multilevel converter based on an adaptive-linear-neuron quadrature signal generator for virtual-flux estimation (VF-ADALINE-QSG). The proposed estimator identifies the DC offset component and extracts the in-phase and quadrature f...

Mustapha Asnoun, B. Boukais, Koussaila Mesbah et al. · 0 citations

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