Model-Based Quasi-Sliding Mode Control with Loss Estimation Applied to DC–DC Power Converters

• DOI: 10.3390/electronics8101086
• Publication Date: 2019-09-25T07:51:18Z
• Authors: Fredy E. Hoyos; John E. Candelo-B...; Carlos I. Hoyos V...
• Keywords: Buck converter; Robustness; Digital Control

This paper presents the experimental implementation of a buck converter with quasi-sliding mode control combined loss estimator function. An online is developed to estimate, in real time, parasitic resistances and variations resistance load. The estimated load are embedded, into model equations controller using Zero Average Dynamics Fixed Point Induction Control techniques (ZAD-FPIC) improve robustness resistive parameter variations. Details setup presented show electrical electronic circuits, described ensure successful digital closed-loop power converter. proper shielding wiring electronics allows improvement quality measures by removing noise induced electromagnetic interference. A trigger signal used implement Pulse-Width Modulation (PWM) centered pulse synchronize sampling analogical signals from Such synchronization use lower frequency ensures measurements at right instant time. Experimental results good agreement numerical simulations, showing effectiveness approach.