Physics-Informed Residual Reinforcement Learning for DC-Bus Voltage Regulation and VSG-Mediated Frequency Support in Grid-Connected PV-Storage Systems
Grid-connected photovoltaic (PV)-storage systems require a well-regulated DC-side energy buffer to sustain converter operation and to support the frequency response produced by the AC-side virtual synchronous generator (VSG). Purely model-based DC-bus controllers can become conservative under changing source-load condi...