A Novel PWM Technique for MMCs with High Frequency Link and Natural Capacitor Balancing for Grid-Interfacing of Renewables

Prince Kumar, Abhijit Kshirsagar, Daniel Opila, Ned Mohan

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

1 Scopus citations

Abstract

This paper presents a new pulse width modulation (PWM) technique for a high-frequency link Modular Multilevel Converter topology for grid-integrated renewables. The topology generates a multilevel output voltage with low harmonic distortion, increased reliability, and design flexibility due to the modular nature of the converter. A central full-bridge converter is connected to multiple High Frequency Link modules via high frequency transformers. Each module produces its own isolated DC voltage, and modules are inserted or bypassed to synthesize large AC voltages. The proposed PWM technique equalizes module utilization without increasing losses, and retains inherent capacitor voltage balancing. Simulation results using SIMULINK models show that the proposed modulation scheme results in better performance than conventional schemes such as level-shifted carrier PWM, phase-shifted carrier PWM, hybrid schemes or nearest-level modulation.

Original languageEnglish (US)
Title of host publicationProceedings of 2018 IEEE International Conference on Power Electronics, Drives and Energy Systems, PEDES 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538693155
DOIs
StatePublished - Jul 2 2018
Event8th IEEE International Conference on Power Electronics, Drives and Energy Systems, PEDES 2018 - Chennai, India
Duration: Dec 18 2018Dec 21 2018

Publication series

NameProceedings of 2018 IEEE International Conference on Power Electronics, Drives and Energy Systems, PEDES 2018

Conference

Conference8th IEEE International Conference on Power Electronics, Drives and Energy Systems, PEDES 2018
CountryIndia
CityChennai
Period12/18/1812/21/18

Keywords

  • Full-Bridge Converter
  • Full-Bridge Rectifier
  • High Frequency Transformer
  • Modular Multilevel Converter
  • Pulse Width Modulation

Fingerprint Dive into the research topics of 'A Novel PWM Technique for MMCs with High Frequency Link and Natural Capacitor Balancing for Grid-Interfacing of Renewables'. Together they form a unique fingerprint.

Cite this