Three-level Neutral Point Clamped Inverter Interface for flow battery/supercapacitor Energy Storage System used for microgrids. - Ionel Vechiu; Aitor Etxeberria; Haritza Camblong; Jean-Michel Vinassa (ISGT Europe, 2011)

Control of a hybrid Energy Storage System using a three level neutral point clamped converter. - Aitor Etxeberria; Ionel Vechiu; Sylvain Baudoin; Haritza Camblong; Jean-Michel Vinassa (IECON, 2012)

Hybrid energy storage system with unique power electronic interface for microgrids. - Ionel Vechiu; Aitor Etxeberria; Haritza Camblong; Sylvain Baudoin; Stéphane Kreckelbergh (ISGT Europe, 2013)

Hybrid Energy Storage System Microgrids Integration for Power Quality Improvement Using Four-Leg Three-Level NPC Inverter and Second-Order Sliding Mode Control. - Quentin Tabart; Ionel Vechiu; Aitor Etxeberria; Seddik Bacha (IEEE Trans. Ind. Electron., 2018)