A modified modulation scheme for three-level diode-clamped matrix converter under unbalanced input conditions

Su, Mei; Zhao, Ziyi; Dan, Hanbing; Peng, Tao; Sun, Yao; Che, Ruyu; Zhang, Fan; Zhu, Qi; Wheeler, Patrick

Abstract

The three-level diode-clamped matrix converter topology has outstanding performance under ideal operating conditions. However, input disturbance can influence the waveforms at the output side of the converter due to the direct coupling between the input and output. This paper proposes a modified modulation scheme for three-level diode-clamped matrix converter during operation with unbalanced input voltages and when different transformer turns ratios are used for an isolation transformer at the input. With this modulation technique, sinusoidal and balanced output voltages are guaranteed and the input current harmonics are minimized. Experimental results are presented to demonstrate the feasibility and effectiveness of the proposed modulation scheme.

Citation

Su, M., Zhao, Z., Dan, H., Peng, T., Sun, Y., Che, R., …Wheeler, P. (2018). A modified modulation scheme for three-level diode-clamped matrix converter under unbalanced input conditions. IET Power Electronics, 11(8), https://doi.org/10.1049/iet-pel.2017.0512

• Journal Article Type: Article
• Acceptance Date: Feb 17, 2018
• Online Publication Date: Feb 20, 2018
• Publication Date: Jul 10, 2018
• Deposit Date: Feb 23, 2018
• Publicly Available Date: Feb 23, 2018
• Journal: IET Power Electronics
• Electronic ISSN: 1755-4543
• Publisher: Institution of Engineering and Technology (IET)
• Peer Reviewed: Peer Reviewed
• Volume: 11
• Issue: 8
• DOI: https://doi.org/10.1049/iet-pel.2017.0512
• Keywords: Different transformer turns ratios of the isolation transformer; Three-level diode-clamped matrix converter; Unbalanced input voltages; Modified modulation scheme
• Public URL: https://nottingham-repository.worktribe.com/output/946136
• Publisher URL: http://digital-library.theiet.org/content/journals/10.1049/iet-pel.2017.0512
• Additional Information: © 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.