Fixed switching frequency predictive control of an asymmetric source dual inverter system with a floating bridge for multilevel operation

Chowdhury, Shajjad; Wheeler, Patrick; Huang, Zhen; Rivera, Marco; Gerada, Chris

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.

Citation

Chowdhury, S., Wheeler, P., Huang, Z., Rivera, M., & Gerada, C. (2019). Fixed switching frequency predictive control of an asymmetric source dual inverter system with a floating bridge for multilevel operation. IET Power Electronics, 12(3), 450-457. https://doi.org/10.1049/iet-pel.2018.5395

• Journal Article Type: Article
• Acceptance Date: Nov 7, 2018
• Publication Date: Mar 20, 2019
• Deposit Date: Apr 11, 2019
• Journal: IET Power Electronics
• Electronic ISSN: 1755-4543
• Publisher: Institution of Engineering and Technology (IET)
• Peer Reviewed: Peer Reviewed
• Volume: 12
• Issue: 3
• Pages: 450-457
• DOI: https://doi.org/10.1049/iet-pel.2018.5395
• Keywords: Electrical and Electronic Engineering
• Public URL: https://nottingham-repository.worktribe.com/output/1780740
• Publisher URL: https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2018.5395