New modulation scheme for bidirectional qZS modular multi-level converters

Khera, Fatma A.; Klumpner, Christian; Wheeler, Pat W.

Abstract

This study proposes a dedicated modulation scheme for a bidirectional quasi-Z-source (qZS) modular multi-level converter. The operation principle and a suitable pulse-width modulation method are proposed. The relation between the modulation index and shoot-through duty ratio is derived. A formula for calculating the required value of qZS capacitance is given. The simulation results presented in the study validate the operation and the performance of the proposed topology.

• Journal Article Type: Article
• Acceptance Date: Jul 27, 2018
• Online Publication Date: Jan 22, 2019
• Publication Date: Jun 1, 2019
• Deposit Date: Jul 15, 2019
• Publicly Available Date: Jul 15, 2019
• Journal: The Journal of Engineering
• Print ISSN: 2051-3305
• Electronic ISSN: 2051-3305
• Publisher: Institution of Engineering and Technology (IET)
• Peer Reviewed: Peer Reviewed
• Volume: 2019
• Issue: 17
• Pages: 3836-3841
• DOI: https://doi.org/10.1049/joe.2018.8020
• Public URL: https://nottingham-repository.worktribe.com/output/2308941
• Publisher URL: https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8020