Predictive Control of Switching System for DC/AC Converter

Abstract:

In this paper the predictive control of switching system is introduced to the DC/AC converter. Our aim is to control the output power of converter closer to the reference. By considering the working status of DC/AC converter is actually switched among several definite subsystems, the switching system model of DC/AC converter is constructed. The tracking problem of converter output power can be changed to be that of its three-phase output currents. Based on the switching system model of converter, the three-phase output currents of those subsystems are predicted and the switching command is determined by examining the discrepancies between the three-phase predictive currents corresponding to each subsystem and the reference ones. Simulations demonstrate that our control scheme for DC/AC converter connected with ultra-capacitor has great advantages in output power tracking and sinusoidal output current waveforms.

• Periodical: Advanced Materials Research (Volumes 655-657)
• Pages: 1496-1499
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.655-657.1496
• Online since: January 2013
• Authors: Gang Wu, Zhe Jing Bao, Ting Wu, Wen Jun Yan
• Keywords: DC/AC Converter, Power Tracking, Predictive Control, Switching System, Ultra-Capacitor

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