A New PWM Technique for Modular Multi-Level Converters: Simulation & Hardware Validation

Prince Kumar, Manikanta Pallantla, Abhijit Kshirsagar, Ned Mohan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents a new pulse width modulation (PWM) technique for a modular multi-level converter (MMC) topology. The presented converter generates a multi-level output voltage with low harmonic distortion, increased reliability, and design flexibility due to the modular nature of the topology. The topology has several sub-modules that can be inserted or bypassed to synthesize large AC voltages. The proposed PWM technique equalizes sub-modules utilization without increasing losses, and retains inherent capacitor voltage balancing. Simulation and hardware results are presented in the paper, which shows that the proposed modulation scheme results in better performance than conventional schemes such as nearest-level modulation, level-shifted carrier PWM, or phase-shifted carrier PWM.

Original languageEnglish (US)
Title of host publication2022 IEEE 7th Southern Power Electronics Conference, SPEC 2022
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9798350399882
DOIs
StatePublished - 2022
Externally publishedYes
Event7th IEEE Southern Power Electronics Conference, SPEC 2022 - Nadi, Fiji
Duration: Dec 5 2022Dec 8 2022

Publication series

Name2022 IEEE 7th Southern Power Electronics Conference, SPEC 2022

Conference

Conference7th IEEE Southern Power Electronics Conference, SPEC 2022
Country/TerritoryFiji
CityNadi
Period12/5/2212/8/22

Bibliographical note

Publisher Copyright:
© 2022 IEEE.

Keywords

  • Cascaded H-bridge
  • High-Frequency Transformer
  • Modular Multi-Level Converters
  • Pulse Width Modulation

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