Dual active bridge converter with PWM control for solid state transformer application

Chenhao Nan, Raja Ayyanar

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

19 Scopus citations

Abstract

For the single-phase, dual active bridge converter (DAB) based three-stage solid state transformer (SST), the instantaneous load power seen by the DAB converter varies from zero to twice the load average power at double-line frequency. Traditionally with phase-shift modulation (PSM) control, large DC link capacitors are needed to handle the instantaneous load power variation while DAB converter only processes the constant power resulting in better soft-switching range and consequently high efficiency. However, the large electrolytic capacitors required in the DC link adversely affect the power density and the reliability of SST. In this paper, a PWM control is applied to minimize the DC link capacitor for the DAB based three-stage SST. The experimental results prove that DAB converter with PWM control has extended ZVS range down to nearly zero load and therefore improved efficiency at light load. Consequently, DAB can achieve comparable high efficiency while the DC link capacitors of SST can be reduced to a value low enough for film capacitor implementation.

Original languageEnglish (US)
Title of host publication2013 IEEE Energy Conversion Congress and Exposition, ECCE 2013
Pages4747-4753
Number of pages7
DOIs
StatePublished - Dec 31 2013
Event5th Annual IEEE Energy Conversion Congress and Exhibition, ECCE 2013 - Denver, CO, United States
Duration: Sep 15 2013Sep 19 2013

Publication series

Name2013 IEEE Energy Conversion Congress and Exposition, ECCE 2013

Other

Other5th Annual IEEE Energy Conversion Congress and Exhibition, ECCE 2013
CountryUnited States
CityDenver, CO
Period9/15/139/19/13

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Fuel Technology

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  • Cite this

    Nan, C., & Ayyanar, R. (2013). Dual active bridge converter with PWM control for solid state transformer application. In 2013 IEEE Energy Conversion Congress and Exposition, ECCE 2013 (pp. 4747-4753). [6647338] (2013 IEEE Energy Conversion Congress and Exposition, ECCE 2013). https://doi.org/10.1109/ECCE.2013.6647338