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Novel modulation of enhanced Z-source inverter to minimize switching frequency and volume of the Z-source passive components

  • Chunwei Cai*
  • , Yanbin Qu
  • , Kuang Sheng
  • *Corresponding author for this work

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

Abstract

Z-source inverters are proposed as single-stage power converters with buck-boost energy conversion ability. But their voltage boost inversion capability is limited. This paper proposes an enhanced Z-source inverter. Compared to the traditional Z-source inverter, it can obtain high voltage conversion factor with a short shoot-through duration, and can decrease Z-source capacitor voltage stress significantly. Moreover, a novel modulation of proposed Z-source inverter is presented to obtain same voltage gain as maximum constant boost control retaining the switching frequency unchanged. And it can greatly reduce the L and C volume in the Z-network under the six shoot-through intervals per carrier period. Simulation and experimental results have demonstrated the merits of the proposed method.

Original languageEnglish
Title of host publicationElectrical, Information Engineering and Mechatronics 2011 - Proceedings of the 2011 International Conference on Electrical, Information Engineering and Mechatronics, EIEM 2011
Pages295-304
Number of pages10
DOIs
StatePublished - 2012
Externally publishedYes
Event2011 International Conference on Electrical, Information Engineering and Mechatronics, EIEM 2011 - Jiaozuo, Henan, China
Duration: 23 Dec 201125 Dec 2011

Publication series

NameLecture Notes in Electrical Engineering
Volume138 LNEE
ISSN (Print)1876-1100
ISSN (Electronic)1876-1119

Conference

Conference2011 International Conference on Electrical, Information Engineering and Mechatronics, EIEM 2011
Country/TerritoryChina
CityJiaozuo, Henan
Period23/12/1125/12/11

Keywords

  • Boost ability
  • Maximum constant boost control
  • Shoot-through states
  • Voltage gain
  • Z-source inverter

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