Comprehensive modeling of grid-connected inverters in weak grid systems

• Date: 2026
• Main Authors: Daili, Y., Bentafer, R., Djaraf, N., Harrag, A.
• Format: Article
• Language: English
• Published: National Technical University "Kharkiv Polytechnic Institute" and Аnatolii Pidhornyi Institute of Power Machines and Systems of NAS of Ukraine 2026
• Subjects: grid-connected inverter; weak grid; state-space model; small-signal analysis; phase locked loop; renewable energy
• Online Access: https://eie.khpi.edu.ua/article/view/338312
• Journal Title: Electrical Engineering & Electromechanics

Introduction. The stability of grid-connected inverters is critical for the integration of renewable energy into modern power systems. However, this stability is significantly challenged under weak grid conditions, characterized by high impedance and low short-circuit ratios. Problem. Under such con...