An Isolated AC/DC Converter Using a Matrix Converter: A Feedback Control Method Considering the Non-linearity of a Diode Rectifier

Wataru Kodaka, Satoshi Ogasawara, Koji Orikawa, Masatsugu Takemoto, Hiroyuki Tokusaki

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

Abstract

This paper introduces a matrix converter control method for an isolated AC/DC converter with a resonant circuit that considers non-linearity of the diode rectifier. The method achieves a high output frequency equals to the switching frequency, a constant DC output voltage, sinusoidal input currents, and unity input power factor. Furthermore, soft switching with maximum output power factor is realized by a frequency control. In this type of circuit, the harmonics of the matrix converter output current are caused by the non-linearity of the diode rectifier. A conventional method neglects these harmonics, which cause input current distortion and DC voltage ripple. In a proposed method, the control variables are numerically calculated considering the non-linearity of the diode rectifier and implemented in a lookup table. In addition, a DC voltage feedback is applied to compensate for the effects of parameter error, e.g., voltage drop of the power semiconductor device and deadtime of the MC. The proposed method is evaluated experimentally.

Original languageEnglish
Title of host publicationProceedings - IECON 2020
Subtitle of host publication46th Annual Conference of the IEEE Industrial Electronics Society
PublisherIEEE Computer Society
Pages1229-1234
Number of pages6
ISBN (Electronic)9781728154145
DOIs
Publication statusPublished - Oct 18 2020
Externally publishedYes
Event46th Annual Conference of the IEEE Industrial Electronics Society, IECON 2020 - Virtual, Singapore, Singapore
Duration: Oct 19 2020Oct 21 2020

Publication series

NameIECON Proceedings (Industrial Electronics Conference)
Volume2020-October

Conference

Conference46th Annual Conference of the IEEE Industrial Electronics Society, IECON 2020
CountrySingapore
CityVirtual, Singapore
Period10/19/2010/21/20

Keywords

  • feedback control
  • isolated AC/DC converter
  • matrix coverter
  • non-liearity
  • soft switching

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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