Switched-coupled-inductor inverter

Qin Lei, Fang Z. Peng, Miaosen Shen

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

8 Scopus citations

Abstract

A new family of switched-coupled-inductor inverters has been proposed in this paper, with voltage buck-boost function. In voltage-fed switched-coupled-inductor inverter, a boost function can be implemented by introducing an extra shoot-through state on the inverter bridge. It utilizes the same principle as the Z-source inverter, but has higher boost ratio and lower active device voltage stress at the same voltage gain. It also has wider voltage buck/boost range than conventional boost-converter inverter. In current-fed switched coupled inductor inverter, a buck function can be implemented by introducing an extra open zero state on the inverter bridge. The current-fed topologies are capacitor-less solution among the buck-boost inverters, which reduces the system size significantly. In addition, compared to traditional boost-converter-inverter, it has less switch count, and less active device current stress. Compared to current-fed Z-source inverter, it has higher boost ratio and lower active device current stress. The inverter can sustain minimum voltage and current stress at a certain operation point, through adjusting the trans-ratio and the shoot through/open circuit duty cycle. The simulation results are given to verify the theory analysis and demonstrate the great merits of the switched-coupled-inductor inverter. It is beneficial to be applied in dc-ac applications that demand a high voltage gain from a very low voltage dc source, such as the micro-inverter in photovoltaic, or G/M in HEV.

Original languageEnglish (US)
Title of host publication2013 IEEE Energy Conversion Congress and Exposition, ECCE 2013
Pages5280-5287
Number of pages8
DOIs
StatePublished - Dec 31 2013
Externally publishedYes
Event5th Annual IEEE Energy Conversion Congress and Exhibition, ECCE 2013 - Denver, CO, United States
Duration: Sep 15 2013Sep 19 2013

Publication series

Name2013 IEEE Energy Conversion Congress and Exposition, ECCE 2013

Other

Other5th Annual IEEE Energy Conversion Congress and Exhibition, ECCE 2013
CountryUnited States
CityDenver, CO
Period9/15/139/19/13

Keywords

  • buck-boost
  • capacitor-less
  • open zero
  • shoot through
  • switched-coupled-inductor

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Fuel Technology

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  • Cite this

    Lei, Q., Peng, F. Z., & Shen, M. (2013). Switched-coupled-inductor inverter. In 2013 IEEE Energy Conversion Congress and Exposition, ECCE 2013 (pp. 5280-5287). [6647416] (2013 IEEE Energy Conversion Congress and Exposition, ECCE 2013). https://doi.org/10.1109/ECCE.2013.6647416