Assessment of Classical and Advanced Control Techniques for Battery-Integrated DAB Converter

Abstract

This research work presents a comprehensive assessment of both classical and advanced control techniques applied to a battery-integrated dual active bridge (DAB) converter. The DAB converter is very popular in DC microgrid applications for DC link voltage stabilization. The DAB converter offers galvanic isolation, high efficiency, and flexible voltage gain, which makes it suitable for battery integration to the DC-link. Various control strategies, including Proportional-Integral (PI), Internal Model Control (IMC), Two-Degree-of-Freedom (2DOF) control, Fractional Order PID (FOPID), and Model Predictive Control (MPC), are designed, implemented, and analyzed for their effectiveness in regulating the DC link voltage constant. Both the time domain and frequency domain performance are evaluated to analyze stability. The parameters like transient response, steady-state error, and robustness are evaluated to find the effective application area. Simulation studies are carried out using MATLAB/Simulink, and the results demonstrate. This comparative analysis provides critical insights into selecting suitable control approaches for highperformance battery-integrated DAB converters in modern power systems.