Stability Improvement of a DC Boost Converter Supplying a Constant Power Load via a Digital Robust Control Technique

Constant power loads (CPLs) and additional disturbances such as constant voltage loads (CVLs) and input voltage changes can cause instability in a DC microgrid. In this article, an RST controller is proposed to address the instability induced by these discrepancies, increase robustness, and achieve high tracking performance for DC-DC boost converters feeding CPL and CVL in a DC microgrid. To create the proposed controller, first, identity the DC-DC boost converter's dynamic model system. Subsequently, a controller is designed and implemented for the system using the pole positioning and sensitivity function shaping methodologies. MATLAB simulations are used to validate the efficacy and resilience of the RST control. Where the findings reveal that the suggested control shows the ability to maintain stability, regulate the voltage of the DC bus, and accomplish the desired performances