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

Jinia Roy; Raja Ayyanar

doi:10.1109/APEC.2018.8341039

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 proceeding › Conference 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 language	English (US)
Title of host publication	APEC 2018 - 33rd Annual IEEE Applied Power Electronics Conference and Exposition
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	381-386
Number of pages	6
Volume	2018-March
ISBN (Electronic)	9781538611807
DOIs	https://doi.org/10.1109/APEC.2018.8341039
State	Published - Apr 18 2018
Event	33rd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2018 - San Antonio, United States Duration: Mar 4 2018 → Mar 8 2018

Other

Other	33rd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2018
Country	United States
City	San Antonio
Period	3/4/18 → 3/8/18

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

Access to Document

10.1109/APEC.2018.8341039

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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

GaN based transformer-less microinverter with coupled inductor interleaved boost and half bridge voltage swing inverter. / Roy, Jinia; Ayyanar, Raja.

APEC 2018 - 33rd Annual IEEE Applied Power Electronics Conference and Exposition. Vol. 2018-March Institute of Electrical and Electronics Engineers Inc., 2018. p. 381-386.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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, Institute of Electrical and Electronics Engineers Inc., pp. 381-386, 33rd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2018, San Antonio, United States, 3/4/18. https://doi.org/10.1109/APEC.2018.8341039

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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.",

keywords = "Active power decoupling, Coupled inductor interleaved boost, High gain boost, Microinverter, Minimized capacitance, Transformer-less PV inverter",

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N2 - 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.

AB - 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.

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