Digital Twin Approach Enables Switching Converter Adaptive Control for All-Electric Ship Power Distribution System

In this paper, a faster than real-time virtual model of a double-loop proportional-integral boost converter was constructed with adaptive control. The purpose of this virtual model is for digital twin implementation, in which the model will be used to adjust the controller parameters of a physical boost converter preemptively - before a transient - to maintain stability and performance. First, the boost converter was modeled using double-loop proportional-integral control. From the double-loop model, a tuning algorithm was developed to adjust the bandwidth and phase margin of the converter. Next, the model was implemented in Simulink. For adaptive control, a steady state detector was added to the model to enable controller parameter tuning only in steady state to avoid stability issues. Finally, the model was simulated in real-time on the Imperix platform to test the behavior of the model.