TY - GEN
T1 - GaN based transformer-less microinverter with coupled inductor interleaved boost and half bridge voltage swing inverter
AU - Roy, Jinia
AU - Ayyanar, Raja
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/4/18
Y1 - 2018/4/18
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.
KW - Active power decoupling
KW - Coupled inductor interleaved boost
KW - High gain boost
KW - Microinverter
KW - Minimized capacitance
KW - Transformer-less PV inverter
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U2 - 10.1109/APEC.2018.8341039
DO - 10.1109/APEC.2018.8341039
M3 - Conference contribution
AN - SCOPUS:85046955423
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 381
EP - 386
BT - APEC 2018 - 33rd Annual IEEE Applied Power Electronics Conference and Exposition
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 33rd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2018
Y2 - 4 March 2018 through 8 March 2018
ER -