Flatness of the Three-Phase Grid Connected DC-AC Inverter with LCL Filter

Marouane Laaziz (1, 2) , Florentina Nicolau (3) , Malek Ghanes (4, 1) , Nadia Machkour (2) , Jean-Pierre Barbot (5, 1) , Robert Boisliveau (1)

1 LS2N - Laboratoire des Sciences du Numérique de Nantes
2 LCCPS, ENSAM Hassan II University of Casablanca
3 QUARTZ - Laboratoire QUARTZ
4 Nantes Univ - ECN - NANTES UNIVERSITÉ - École Centrale de Nantes
5 QUARTZ - Laboratoire QUARTZ

The three-phase inverter, connected to the grid by an LCL filter, is vulnerable to multiple faults, therefore an active fault-tolerant control is required to preserve the electrical power conversion between renewable resources and the grid. In this work, we provide a flatness analysis of the inverter and its LCL filter, the goal being to determine whether the flatness-based control structure stays accurate under both healthy and faulty circumstances.

Keywords: DC-AC inverter; Grid; Flatness analysis; Fault control

Domains: Engineering Sciences [physics]; Mathematics [math]; Nonlinear Sciences [physics]

Marouane Laaziz, Florentina Nicolau, Malek Ghanes, Nadia Machkour, Jean-Pierre Barbot, et al.. Flatness of the Three-Phase Grid Connected DC-AC Inverter with LCL Filter. 2024. ⟨hal-04555697⟩