Fixed switching frequency predictive control of an asymmetric source dual inverter system with a floating bridge for multilevel operation. Issue 3 (5th February 2019)

• Record Type: Journal Article
• Authors: Chowdhury, Shajjad; Wheeler, Patrick; Huang, Zhen; Rivera, Marco; Gerada, Chris
• Is Part Of: IET power electronics. Volume 12:Issue 3(2019)
• Page Start: 450
• Page End: 457
• Publication Date: 2019-02-05
• Subjects: PWM invertors -- predictive control -- induction motor drives -- switching convertors -- invertors -- machine windings; fixed switching frequency predictive control -- asymmetric source dual inverter system -- floating bridge -- multilevel operation -- modified modulated model predictive control scheme -- open‐end winding induction motor drive -- control algorithm -- modulation algorithm -- cost function optimisation scheme -- variable switching frequency -- floating capacitor -- predefined redundant switching sequences -- voltage vector location -- MMPC scheme; Power electronics -- Periodicals; 621.31705
• DOI: 10.1049/iet-pel.2018.5395
• Languages: English
• ISSNs: 1755-4535

Abstract

Abstract : This study proposes a modified modulated model predictive control (MMPC) scheme to control an open‐end winding induction motor drive using an asymmetric source dual inverter with one floating bridge. The control algorithm uses a modulation algorithm within the cost function optimisation scheme to avoid variable switching frequency. The voltage of the floating capacitor is regulated utilising predefined redundant switching sequences as well as the voltage vector location is identified to improve calculation time. The proposed MMPC scheme enhances the output performance with comparison to the model predictive control scheme. Experimental results are presented to verify theory and simulation results.