A Comparative Analysis of Terminal and Second Order Sliding Mode Controllers for Full Bridge Single Phase Inverters

This study presents a comprehensive analysis of Terminal Sliding Mode Control (TSMC) and Super Twisting Sliding Mode Control (SOSMC), in the context of full-bridge single-phase inverters. The controllers are designed to output current control of the single-phase inverter. Simulation studies are performed on MATLAB/Simulink platform to investigate the dynamic responses, steady-state error, ripple magnitude and total harmonic distortion (THD). The results indicate that TSMC offers faster response times but suffers from significant undershoot and higher steady-state errors. Conversely, SOSMC demonstrates superior performance with lower steady-state error, reduced ripple and significantly less harmonic distortion. These findings highlight the relative advantages and disadvantages of each control strategy, providing valuable insights for their application in both academic research and industrial practice.