Open AccessImproved discrete-time model for a digital controlled single-phase full-bridge voltage inverter
Author(s) -
Xuanlyu Wu,
Guochun Xiao,
Bo Lei
Publication year - 2013
Publication title -
acta physica sinica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.62.050503
Subject(s) - computer science , control theory (sociology) , discrete time and continuous time , inverter , voltage , filter (signal processing) , digital control , inductor , capacitor , stability (learning theory) , process (computing) , electronic engineering , control (management) , mathematics , engineering , electrical engineering , statistics , artificial intelligence , machine learning , computer vision , operating system
An improved discrete-time model for a digital controlled single-phase full-bridge voltage inverter is proposed in this paper. Based on state-space averaging in every switching cycle, the improved discrete-time model combines the advantages of the average model and the traditional discrete-time model, which can accurately analyze the digital control delay and sample-and-hold process inherently in digital controlled system. Consequently, under the accuracy premise, the improved discrete-time model can effectively simplify the traditional discrete-time modeling. As an example, an LC filter capacitor-voltage and inductor-current feed-back plus voltage-reference feed-forward control algorithm is analyzed based on the improved discrete-time model. The stability boundary and oscillation frequency are accurately predicted. Finally, theoretical results are verified by simulations and experiments.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom