Conference paper
Three-Port Series-Resonant Converter DC Transformer with Integrated Magnetics for High Efficiency Operation
The series-resonant converter has become a very attractive topology for solid-state transformers due to its fixed voltage gain and soft-switching conditions when operating at the resonance frequency. This paper presents an open-loop three-port series-resonant converter (TP-SRC) capable of interconnecting three dc microgrids.
High efficiency power electronics is a key enabler for the future dc distribution systems. In this paper, efficiency optimization and rms current reduction of the TP-SRC is achieved by a detailed analysis of the resonance frequency and dead-time selection. The analysis is supported by a losses modelling of the main components of the converter.
In addition, Gallium Nitride (GaN) MOSFETs are used to reduce semiconductors’ losses. Furthermore, the resonance inductance of the distributed resonant tank has been integrated into the leakage inductance of the transformer and the PCB parasitic inductances. In order to ensure a fixed resonance frequency, an experimental resonance frequency matching methodology for the resonant tank has been presented.
Experimental results were obtained for a 1.4 kW featuring a peak efficiency of 98.8 %.
Language: | English |
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Publisher: | IEEE |
Year: | 2018 |
Pages: | 5622-5629 |
Proceedings: | 2018 IEEE Energy Conversion Congress and Exposition |
ISBN: | 1479973114 , 1479973122 , 1479973130 , 9781479973118 , 9781479973125 and 9781479973132 |
ISSN: | 23293721 and 23293748 |
Types: | Conference paper |
DOI: | 10.1109/ECCE.2018.8557784 |
ORCIDs: | Tomas Manez, Kevin , Zhang, Zhe and Xiao, Yudi |
Frequency conversion GaN III-V semiconductors Inductance MOSFET Power electronics Resonant frequency TP-SRC Transformers Voltage dc distribution systems dc microgrids distributed resonant tank efficiency optimization experimental resonance frequency matching methodology fixed resonance frequency fixed voltage gain gallium compounds high efficiency operation high efficiency power electronics integrated magnetics open-loop three-port series-resonant converter peak efficiency port series-resonant converter DC transformer power 1.4 kW power electronics resonance inductance resonant power convertors soft-switching conditions solid-state transformers switching convertors transformers wide band gap semiconductors