Passivity-Based Stability Analysis for Current Control With Active Damping of Three-phase Grid Connected- Inverter

Abstract

With the remarkable growth of renewable energy resources, the grid connected-inverter with current control and stability attracts much attention. Due to the inverter and grid interaction, the stability of the connected inverter is a critical issue. The passivity-based analysis approach, which widely applied to the grid inverter. This paper conducts a comprehensive passivity-based analysis of inverter side current control. Therefore, the paper proposes a passivity-based design method of active damping (AD) in the three-phase grid-connected inverter. The designed Proportional-Resonant (PR) current control system is verified by HIL402 Hardware In the Loop (HIL) environment. The 5 kVA experimental results show the performance and stability of the current control loop.