Record link: 
http://hdl.handle.net/20.500.12708/224310
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Title: 
Concept Study on a Transformerless Medium Voltage Battery Storage System based on MOSFET-H-Bridges
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Citation: 
Aspalter, P., Mitsugi, Y., Vogelsberger, M., Drofenik, U., & Ertl, J. (2025). Concept Study on a Transformerless Medium Voltage Battery Storage System based on MOSFET-H-Bridges. In 2025 14th International Conference on Renewable Energy Research and Applications (ICRERA) (pp. 567–574). IEEE. https://doi.org/10.1109/ICRERA66237.2025.11284163
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Publisher DOI: 
10.1109/ICRERA66237.2025.11284163
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Publication Type: 
Inproceedings - Full-Paper Contribution
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Language: 
English
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Authors: 
Aspalter, Paul 
Mitsugi, Yasuaki 
Vogelsberger, Markus 
Drofenik, Uwe 
Ertl, Johann 
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Organisational Unit: 
E369-02 - Forschungsbereich Leistungselektronik 
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Published in: 
2025 14th International Conference on Renewable Energy Research and Applications (ICRERA) 
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ISBN: 
979-8-3315-9989-8
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DOI of the book: 
10.1109/ICRERA66237.2025
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Date (published): 
19-Dec-2025
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Event name: 
2025 14th International Conference on Renewable Energy Research and Applications (ICRERA) 
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Event date: 
27-Oct-2025 - 30-Oct-2025
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Event place: 
Wien, Austria
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Number of Pages: 
8
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Publisher: 
IEEE
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Peer reviewed: 
Yes
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Keywords: 
Modular Multilevel Converter; Battery Electric Storage System; Medium Voltage; Transformerless; MOSFET
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Abstract: 
The authors present a comparison between a state of the art grid scale battery electric storage system to a transformerless modular multilevel converter system directly connected to the medium voltage grid. Based on available semiconductor devices around 250 designs reaching from 200 V MOSFETs to 3.3 kV SiC-MOSFETs are analyzed with regards to efficiency, cost, battery lifetime and reliability. Furthermore, a specific case based on 600 V MOSFETs was chosen to attempt a more extensive design of the whole system. This includes the design of the basic H-bridge converter cell consisting of the power PCB, cooling, batteries and interconnection. Additionally a CAD model of this cell and an integration into a standard 20ft shipping container is shown.
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Research Areas: 
Logic and Computation: 15%
Climate Neutral, Renewable and Conventional Energy Supply Systems: 85%
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Science Branch: 
2020 - Elektrotechnik, Elektronik, Informationstechnik: 100%
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Appears in Collections:
Conference Paper

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