Commutation technique for high frequency link inverter without operational limitations and dead time

Minjeong Kim, Robert Balog

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

2 Citations (Scopus)

Abstract

An improved commutation technique for the ac-ac output converter circuit of a pulse width modulated high frequency link (HF-link) inverter is proposed in this paper. The high frequency link inverter converts a DC input voltage into line frequency AC output voltage using a high-frequency transformer for voltage step-up and galvanic isolation, without an intermediate rectification and dc bus. In this topology, there is a direct ac-ac converter which processes the HF-link square-wave voltage into the desired sinusoidal ac output voltage. To do this requires a commutation method to prevent shoot-through when output current changes direction or commutâtes from one switch to the next. Conventionally, dead time is used but this adds distortion to the output waveform. Previously a commutation technique without dead time was introduced but it required a number of assumptions on the inverter load impedance and link voltage characteristics that made it useful for a stand-alone R-L load but not practical for grid connection. The commutation method in this paper does not require dead time and does not impose any limitation on the output inductance and link voltage magnitude and frequency. Simulations were performed using MATLAB and Plexim, experimental verification used the dSpace 1007 HIL platform.

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
Publication statusPublished - 13 Feb 2017
Externally publishedYes
Event2016 IEEE Energy Conversion Congress and Exposition, ECCE 2016 - Milwaukee, United States
Duration: 18 Sep 201622 Sep 2016

Other

Other2016 IEEE Energy Conversion Congress and Exposition, ECCE 2016
CountryUnited States
CityMilwaukee
Period18/9/1622/9/16

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ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology
  • Control and Optimization

Cite this

Kim, M., & Balog, R. (2017). Commutation technique for high frequency link inverter without operational limitations and dead time. In ECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings [7854930] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ECCE.2016.7854930