Experimental validation of A robust integral terminal sliding mode control for three-phase voltage source converter in standalone microgrid

Abstract

This paper presents a real-time implementation of a robust Integral Terminal Sliding Mode Control (ITSMC) for a standalone three-phase two-level voltage source inverter. The proposed controller enhances tracking performance, robustness against parameter uncertainties and measurement noise while mitigating chattering. Stability is ensured through Lyapunov theory. The effectiveness of ITSMC is validated experimentally, with a comparative analysis against Model Predictive Control (MPC) and PI control. Results show that ITSMC achieves a 55 % reduction in Total Harmonic Distortion (THD) and greater resilience to parameter uncertainties and measurement noise. Additionally, ITSMC reduces switching frequency and computational costs compared to MPC, leading to lower switching losses and full compliance with IEEE Std 519–2014.