GaN based transformer-less microinverter with coupled inductor interleaved boost and half bridge voltage swing inverter

Jinia Roy, Raja Ayyanar

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

2 Scopus citations

Abstract

Due to their plug and play feature, easy installation, and higher power yield under partial shading conditions, microinverters have gained popularity in the roof-top-PV market. This paper explores a converter system for the transfomer-less microinverter with coupled inductor based interleaved boost as the dc-dc stage and half bridge voltage swing (HBVS) inverter as the dc-ac stage. The dc-dc stage is capable of offering high gain with a flexible choice of turns ratio of the coupled inductor but simultaneously maintaining a reduced voltage stress on the main switch. The HBVS inverter has the advantages of reduced capacitor requirement for 120 Hz power decoupling and being half-bridge derived, minimized capacitive-coupled common-mode ground currents. A 300 W GaN based inverter prototype with 30 V nominal dc input and 120 V, 60 Hz nominal ac output and operating at switching frequency of 200/100 kHz has been developed to validate the converter's operation in hardware.

Original languageEnglish (US)
Title of host publicationAPEC 2018 - 33rd Annual IEEE Applied Power Electronics Conference and Exposition
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages381-386
Number of pages6
Volume2018-March
ISBN (Electronic)9781538611807
DOIs
StatePublished - Apr 18 2018
Event33rd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2018 - San Antonio, United States
Duration: Mar 4 2018Mar 8 2018

Other

Other33rd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2018
CountryUnited States
CitySan Antonio
Period3/4/183/8/18

Keywords

  • Active power decoupling
  • Coupled inductor interleaved boost
  • High gain boost
  • Microinverter
  • Minimized capacitance
  • Transformer-less PV inverter

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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  • Cite this

    Roy, J., & Ayyanar, R. (2018). GaN based transformer-less microinverter with coupled inductor interleaved boost and half bridge voltage swing inverter. In APEC 2018 - 33rd Annual IEEE Applied Power Electronics Conference and Exposition (Vol. 2018-March, pp. 381-386). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/APEC.2018.8341039