Generalised predictive current-mode control of passive front-end boost-type converters

M. G. JUDEWICZ; S. A. GONZÁLEZ; J. R. FISCHER; J. F. MARTÍNEZ; D. O. CARRICA

IET POWER ELECTRONICS

Wiley

Lugar: Hoboken, NJ; Año: 2021

In this work, an average current‐mode control strategy based on a generalised predictive control formulation for passive front‐end three‐phase boost‐type converters is proposed. A novel design procedure for the generalised predictive control strategy is introduced which considers both the cost function and disturbance model as design parameters to set the controller´s dynamic response and robustness against component variations. A maximum robustness criterion was used for achieving stability up to a 70% inductance reduction with maximum possible bandwidth. The proposed strategy was compared against both a PI and a predictive deadbeat average current‐mode control using both simulations and experimental results on a 2−kW converter. The generalised predictive control presented less performance variations between different operating points than the PI controller. Also, the proposed strategy is more robust than the predictive deadbeat strategy, showing a better transient response with a 50% inductance reduction and remained stable for a 71% inductance reduction, while the predictive deadbeat could not. Finally, the proposed strategy achieved a 1.4% output voltage load transient response for a 595W load power step, and a 2.8% output voltage line transient response for a 100V input voltage step, outperforming existing state‐of‐the‐art strategies.