An investigation of high efficiency DC-AC converters for LVDC distribution networks

Yanni Zhong, Stephen Finney, Derrick Holliday

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

Abstract

Low voltage DC (LVDC) distribution systems offer improved efficiency and reliability in smart grids. A major challenge facing LVDC systems is DC-AC conversion. A study of an effective low voltage DC-AC converter is therefore presented. Modular Multilevel Converter (MMC) performance (in particular power loss) is compared with a conventional IGBT-based 2-level converter and its advantages highlighted. A phase-shifted sinusoidal PWM based individual voltage balancing strategy for the MMC is presented. A proportional-resonant controller is introduced to eliminate the 2nd harmonic circulating current in the H-bridge MMC converter.

Original languageEnglish
Title of host publication7th IET International Conference on Power Electronics, Machines and Drives (PEMD 2014)
Subtitle of host publicationProceedngs
PublisherInstitution of Engineering and Technology
Pages1-6
Number of pages6
Volume2014
ISBN (Print)9781849198158
DOIs
Publication statusPublished - 1 Jan 2014
Event7th IET International Conference on Power Electronics, Machines and Drives, PEMD 2014 - Manchester, United Kingdom
Duration: 8 Apr 201410 Apr 2014

Conference

Conference7th IET International Conference on Power Electronics, Machines and Drives, PEMD 2014
Abbreviated titlePEMD 2014
CountryUnited Kingdom
CityManchester
Period8/04/1410/04/14

Keywords

  • capacitor voltage balance control
  • loss calculation
  • LVDC
  • MMC

Fingerprint Dive into the research topics of 'An investigation of high efficiency DC-AC converters for LVDC distribution networks'. Together they form a unique fingerprint.

  • Cite this

    Zhong, Y., Finney, S., & Holliday, D. (2014). An investigation of high efficiency DC-AC converters for LVDC distribution networks. In 7th IET International Conference on Power Electronics, Machines and Drives (PEMD 2014): Proceedngs (Vol. 2014, pp. 1-6). Institution of Engineering and Technology. https://doi.org/10.1049/cp.2014.0283