Neutral Point Voltage Control Method for Three-Level Diode-Clamped Converter Based on Fourth Harmonic Current Injection

Li, Chen; Yang, Tao; Bozhko, Serhiy; Wheeler, Patrick

Abstract

DC-link neutral point voltage balancing for three level neutral point clamped converters has been extensively investigated. Many effective methods have been reported with desirable performances under high power factor conditions. However, most of the reported methods tend to be weakened when the converter operates at lower power factor, and very few methods can function under no-load or light-load condition. This paper proposes an alternative DC-link neutral point voltage control method based on injection of fourth order harmonic current. The proposed method works in full power factor range and no-load condition, where most other methods become less effective. A detailed description of the formulation, control of the method followed by simulation results are presented to confirm the performance of the method.

Citation

Li, C., Yang, T., Bozhko, S., & Wheeler, P. (2018, September). Neutral Point Voltage Control Method for Three-Level Diode-Clamped Converter Based on Fourth Harmonic Current Injection. Presented at IEEE Energy Conversion Congress and Exposition (ECCE 2018), Portland, Oregon, USA

• Presentation Conference Type: Edited Proceedings
• Conference Name: IEEE Energy Conversion Congress and Exposition (ECCE 2018)
• Start Date: Sep 23, 2018
• End Date: Sep 27, 2018
• Acceptance Date: May 1, 2018
• Online Publication Date: Dec 6, 2018
• Publication Date: 2018-09
• Deposit Date: Mar 11, 2020
• Publicly Available Date: Mar 12, 2020
• Pages: 6996-7002
• Series ISSN: 2329-3748
• Book Title: Proceedings - 2018 IEEE Energy Conversion Congress and Exposition (ECCE)
• ISBN: 978-1-4799-7313-2
• DOI: https://doi.org/10.1109/ECCE.2018.8557537
• Public URL: https://nottingham-repository.worktribe.com/output/4127498
• Publisher URL: https://ieeexplore.ieee.org/document/8557537
• 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.