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A Buck-Boost Converter Modified to Utilize 600V GaN Power Devices in a PV Application Requiring 1200V DevicesSRDIC, S. , DESPOTOVIC, Z.
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buck-boost converter, converter topology, dc-dc power converters, GaN semiconductor devices, PV inverter
power(24), electronics(21), photovoltaic(9), transformer(8), apec(8), phase(7), grid(7), systems(6), single(6), ipec(6)
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About this article
Date of Publication: 2015-08-31
Volume 15, Issue 3, Year 2015, On page(s): 59 - 64
ISSN: 1582-7445, e-ISSN: 1844-7600
Digital Object Identifier: 10.4316/AECE.2015.03008
Web of Science Accession Number: 000360171500008
SCOPUS ID: 84940729817
This paper presents a buck-boost converter which is modified to utilize new 600 V gallium nitride (GaN) power semiconductor devices in an application requiring 1200 V devices. The presented buck-boost converter is used as a part of a dc/dc stage in an all-GaN photovoltaic (PV) inverter and it provides a negative voltage for the 3-level neutral-point-clamped (NPC) PWM inverter which is connected to the utility grid. Since in this application the transistor and the diode of the buck-boost converter need to block the sum of the PV string voltage (which is normally in the range from 150 to 350 V) and the dc bus voltage (which is in the order of 400 V), the 1200 V devices or series connection of 600 V devices need to be employed. Currently, 1200 V GaN power semiconductor devices are not commercially available. Therefore, the standard buck-boost converter is modified to enable the use of 600 V GaN devices in this particular application. Based on the proposed converter topology, a PSpice simulation model and a 600 W converter prototype were developed. Both simulation and experimental results show successful operation of the converter.
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 Boost Converter with Active Snubber Network, HIMMELSTOSS, F. A., DERIN, A. R., CERNAT, M., Advances in Electrical and Computer Engineering, ISSN 1582-7445, Issue 1, Volume 17, 2017.
Digital Object Identifier: 10.4316/AECE.2017.01008 [CrossRef] [Full text]
 A New Transformerless Single-Phase Buck-Boost AC Voltage Regulator, YALCIN, F., HIMMELSTOSS, F. A., Advances in Electrical and Computer Engineering, ISSN 1582-7445, Issue 2, Volume 16, 2016.
Digital Object Identifier: 10.4316/AECE.2016.02009 [CrossRef] [Full text]
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Faculty of Electrical Engineering and Computer Science
Stefan cel Mare University of Suceava, Romania
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