Online Stabilization of DC Power Distribution Systems Applying MIMO-Identification Method and Resonance-Enhanced Voltage Controller

Abstract

In this work a stabilization control scheme is proposed for DC power distribution systems that can adapt to frequent variations in the operating conditions of the system. The proposed control scheme takes advantage of a novel rapid multiple-input multiple-output (MIMO) impedance measurement method that allows all the system impedances to be measured simultaneously. This is unlike the conventional methods where the impedances must be measured one at a time and hence several lengthy measurement cycles are needed. To stabilize the system, an adaptive resonance-enhanced voltage controller is implemented in a source converter that gets updated in real-time based on the most recent variations in the system. The proposed control scheme is validated through experimental results.