GaN based high gain non-isolated DC-DC stage of microinverter with extended-duty-ratio boost

Jinia Roy, Raja Ayyanar

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

14 Scopus citations

Abstract

Microinverter is attracting more attention due to its compact size, plug and play concept, easy installation, and higher power yield under partial shading condition. This paper explores a converter for the DC-DC stage of a non-isolated microinverter. The topology termed as extended-duty-ratio (EDR) boost, is a hybrid of the interleaved boost and switched capacitor concept which has the advantage of providing high gain but simultaneously maintaining reduced voltage and current stress on most of the switches. The inductor current is interleaved, reducing the equivalent ripple on the converter input current and the inductor power loss. The converter operation is identified to be divided into different zones depending on the duty ratio of the phases. The operating principles along with the details of the component design and loss analysis as a function of converter phases has been studied. A 250 W GaN based 3-level EDR prototype with input from 20 V-40 V and 225 V output and operating at switching frequency of 200 kHz has been developed to validate converter's operation in hardware.

Original languageEnglish (US)
Title of host publicationECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781509007370
DOIs
StatePublished - Feb 13 2017
Event2016 IEEE Energy Conversion Congress and Exposition, ECCE 2016 - Milwaukee, United States
Duration: Sep 18 2016Sep 22 2016

Other

Other2016 IEEE Energy Conversion Congress and Exposition, ECCE 2016
CountryUnited States
CityMilwaukee
Period9/18/169/22/16

ASJC Scopus subject areas

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

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    Roy, J., & Ayyanar, R. (2017). GaN based high gain non-isolated DC-DC stage of microinverter with extended-duty-ratio boost. In ECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings [7855130] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ECCE.2016.7855130