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http://dx.doi.org/10.5302/J.ICROS.2014.13.1986

Model Predictive Control of Three-Phase Inverter for Uninterruptible Power Supply Applications under a Hexagonal Input Constraint Region  

Kim, Seok-Kyoon (Research Institute of Electric and Information Technology, Seoul National University of Science & Technology)
Kim, Jung-Su (Department of Electrical and Information Engineering, Seoul National University of Science & Technology)
Lee, Young Il (Department of Electrical and Information Engineering, Seoul National University of Science & Technology)
Publication Information
Journal of Institute of Control, Robotics and Systems / v.20, no.2, 2014 , pp. 163-169 More about this Journal
Abstract
Using the classical cascade voltage control strategy, this paper proposes an analytical solution to an MPC (Model Predictive Control) problem with a hexagonal input constraint set for the inner-loop to regulate the output voltage of the UPS (Uninterruptible Power Supply). Focus is placed on how to deal with the hexagonal input constraint set without any approximation. Following the conventional cascade voltage control strategy, the PI (Proportional-Integral) controller is used in the outer-loop in order to regulate the output voltage. The simulation results illustrate that the capacitor voltage rapidly goes to its reference in a satisfactory manner while keeping other state variables bounded under an unexpected load changes.
Keywords
UPS; three-phase inverter; hexagonal input constraints; MPC;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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