Sinusoidal Input Current Single-Phase AC-AC Converter Based on Coupled Transformer with Reduced Turns Ratio

Soroush Esmaeili, Amin Mahmoudi, Solmaz Kahourzade

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

Abstract

This paper introduces a new single-phase ac-ac converter according to an impedance network. The introduced topology retains the excellences of the conventional non-isolated single-phase ac-ac Z-source converter (ZSC), including buck- boost ability and capability of reversing and maintaining of the phase angle. The suggested converter hires coupled inductors to control output voltage by adjusting its turns ratio along with duty ratio. By utilizing unique shape of coupled inductors, the introduced converter can acquire high voltage boost capability by reducing turns ratio which leads to cost and size reduction. Unlike the single-phase ac gamma source converter, the input current in the introduced converter is continuous. As a result, it does not suffer from non-sinusoidal high THD input current. The voltage and current spikes across the switches are removed by a safe commutation strategy. The introduced converter can be exploited as a dynamic voltage restorer for voltage sag and voltage swell compensating. Simulation results in MATLAB are supplied to survey the converter's operation.

Original languageEnglish
Title of host publicationProceedings of the Energy Conversion Congress and Exposition - Asia, ECCE Asia 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages426-431
Number of pages6
ISBN (Electronic)9781728163444
DOIs
Publication statusPublished - 24 May 2021
Event12th IEEE Energy Conversion Congress and Exposition - Asia, ECCE Asia 2021 - Virtual, Singapore, Singapore
Duration: 24 May 202127 May 2021

Publication series

NameProceedings of the Energy Conversion Congress and Exposition - Asia, ECCE Asia 2021

Conference

Conference12th IEEE Energy Conversion Congress and Exposition - Asia, ECCE Asia 2021
Country/TerritorySingapore
CityVirtual, Singapore
Period24/05/2127/05/21

Keywords

  • ac-ac converters
  • coupled transformer
  • current spikes
  • sinusoidal input current
  • voltage spikes

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