A reliable cascaded AC-AC converter

Sanghoon Kim, Ashraf Ali Khan, Honnyong Cha, Hafiz Furqan Ahmed

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

This paper presents a new type of cascaded PWM ac-ac converter with phase-shift PWM control. It can reach high output voltage by cascading single-phase units of low voltage rating devices. The proposed converter does not sense current/voltage polarity, and does not require current/voltage sensors and lossy snubbers for commutation, thereby the control complexity can be decreased. It has no shoot-through problem and eliminates the PWM dead times, which leads to greatly enhanced system reliability. The phase shift PWM control is also proposed for the proposed converter to reduce the volume of passive components, and current and voltage ripples. In order to verify the robustness of the proposed converter, a 1 kW hardware prototype converter having two-unit cell structure is fabricated and tested.

Original languageEnglish
Title of host publicationECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781509007370
DOIs
StatePublished - 2016
Event2016 IEEE Energy Conversion Congress and Exposition, ECCE 2016 - Milwaukee, United States
Duration: 18 Sep 201622 Sep 2016

Publication series

NameECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings

Conference

Conference2016 IEEE Energy Conversion Congress and Exposition, ECCE 2016
Country/TerritoryUnited States
CityMilwaukee
Period18/09/1622/09/16

Keywords

  • Ac-ac converter
  • cascade
  • high voltage
  • phase-shift control
  • reliablity

Fingerprint

Dive into the research topics of 'A reliable cascaded AC-AC converter'. Together they form a unique fingerprint.

Cite this