Model Predictive Control of an Arm Inductor-less MMC-based DC SST

Abstract

A model predictive controller is proposed for an arm inductor-less MMC-based DC-DC solid-state transformer operating under interleaved phase-shifted square-wave modulation. The controller is based on an advanced dynamic model of the DC SST such that a closed-form solution of the underlying optimization problem is derived. The proposed converter achieves inductor-less current control and uses model-based linear regulators to generate current references. Simulation and experimental results are provided to validate the controller performance.