A Five-Level Converter With Capacitor Voltage Control Capability for Medium-Voltage Power Conversion Systems

Chen Wei, Xibo Yuan*, Wenzhi Zhou, Jun Wang

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

3 Citations (Scopus)

Abstract

This paper presents a new five-level converter with capacitor voltage control capability. The topology is relatively simple and the required blocking voltages of all switching devices are the same without the need of device series-connection, so the five-level converter is suitable for medium-voltage power conversion systems. Meanwhile, the five-level converter only needs to control the flying capacitor (FC) voltages and the capacitor voltage control can be achieved with a proposed simple control method based on the level-shifted pulse width modulation (LS-PWM), which reduces the control complexity. Simulation and experimental results demonstrate the voltage control ability and the performance of the converter under various operating conditions including various modulation indexes, power factors, steady-state and dynamic response, which verifies the feasibility of the topology and the effectiveness of the control method.
Original languageEnglish
Pages (from-to)71
Number of pages84
JournalCPSS Transactions on Power Electronics and Applications
Volume7
Issue number1
DOIs
Publication statusPublished - 20 Apr 2022

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  • Converter Architectures

    Yuan, X. (Principal Investigator)

    1/11/1731/10/21

    Project: Research

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