Operating Mode Analysis of a Modular Converter: Experimental Validation

To balance dc voltage, a two-module structure based on a dc-dc three-level boost converter is utilized. In this article, the possible operating modes for a two-module converter in the steady state are introduced. These modes are performed according to different states of opening or closing of the sw...

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Bibliographic Details
Published inIEEE transactions on industry applications Vol. 58; no. 4; pp. 4889 - 4902
Main Authors Afkar, Mohammad, Gavagsaz-Ghoachani, Roghayeh, Phattanasak, Matheepot, Pierfederici, Serge
Format Journal Article
LanguageEnglish
Published New York IEEE 01.07.2022
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Capacitors
Circuits
Converter-based equalizer
Converters
dc converter
dc voltage balance
Equalizers
Inductors
Modular structures
Modules
operating modes
Resistance
Shunts (electrical)
Switches
Topology
Voltage
Waveforms
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Summary:To balance dc voltage, a two-module structure based on a dc-dc three-level boost converter is utilized. In this article, the possible operating modes for a two-module converter in the steady state are introduced. These modes are performed according to different states of opening or closing of the switches. Total 16 possible operating modes and the operation of different switches in the circuit are shown. The circuits for each operating mode are drawn according to the switch command signals. The relationships governing the system are given in different modes. These equations include the currents through three output capacitors and the inductor voltages of each module. The system is simulated by MATLAB/Simulink. The waveforms of the system are presented in two cases for different operating points. The operating mode of this structure is validated using simulations and experimental results.
ISSN:0093-9994
1939-9367
DOI:10.1109/TIA.2022.3171527