Constrained state feedback control of DC-DC power converter based on model predictive approach

This paper presents novel constrained state feedback controller designed for SiC MOSFET DC-DC power converter. First, discrete state feedback controller (SFC) with feedforward path and load-current observer is proposed. Next, model predictive approach (MPAC) is used to a posteriori constraint introduction into control system. The proposed control scheme is tested through experiments at switching-frequency of 32 kHz, regarding reference and load variations. It is shown that, thanks to the introduction of model predictive approach constraint into control system, a much better dynamic behavior was obtained, in comparison to non-constrained state feedback control.