Breidenstein D, Rösel S, Blamberger L, Dürbaum T (2025)
Publication Type: Conference contribution
Publication year: 2025
Publisher: Institute of Electrical and Electronics Engineers Inc.
Conference Proceedings Title: 2025 Energy Conversion Congress and Expo Europe, ECCE Europe 2025 - Proceedings
Event location: Birmingham, GBR
ISBN: 9798331567521
DOI: 10.1109/ECCE-Europe62795.2025.11238826
For DC-DC conversion applications with high input voltages and high output currents, an input series and output parallel connection (ISOP) of multiple converters reduces the stress on the single module. Despite other advantages like the possibility of redundancy, the modules in the ISOP connection do not automatically share the input voltage and power, when independently controlled. While the simple option to drive all converters with the same control signals achieves natural power sharing, component tolerances lead to mismatches in the transferred power. This paper presents a generalized method for getting the impact of different parameters based on the power characteristic or output voltage characteristic of the base topology. The procedure can be implemented with different kind of models for the single module, including analytical solutions, approximations like the first harmonic analysis or time-domain simulation models. For demonstration, this paper applies it to an experimental LLC ISOP test setup consisting of two modules with a detailed time-domain simulation model. After recreating the search for the steady-state in the measurement, a parameter sensitivity analysis shows the impact of different equivalent circuit parameters.
APA:
Breidenstein, D., Rösel, S., Blamberger, L., & Dürbaum, T. (2025). Analysis of Natural Power Sharing in ISOP-Systems Based On the Single Modules Characteristic. In 2025 Energy Conversion Congress and Expo Europe, ECCE Europe 2025 - Proceedings. Birmingham, GBR: Institute of Electrical and Electronics Engineers Inc..
MLA:
Breidenstein, Daniel, et al. "Analysis of Natural Power Sharing in ISOP-Systems Based On the Single Modules Characteristic." Proceedings of the 2025 Energy Conversion Congress and Expo Europe, ECCE Europe 2025, Birmingham, GBR Institute of Electrical and Electronics Engineers Inc., 2025.
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