Print Email Facebook Twitter Revisiting the Partial Power Processing Concept Title Revisiting the Partial Power Processing Concept: Case Study of a 5-kW 99.11% Efficient Flyback Converter-Based Battery Charger Author Granello, P. (TU Delft DC systems, Energy conversion & Storage) Soeiro, Thiago B. (TU Delft DC systems, Energy conversion & Storage) van der Blij, N.H. (TU Delft DC systems, Energy conversion & Storage) Bauer, P. (TU Delft DC systems, Energy conversion & Storage) Date 2022 Abstract This article proposes an analytical methodology to evaluate the performance of the main partial power processing (PPP) architectures in terms of the improvements in the system's conversion efficiency. This analysis considers the influence of the system's voltage gain, the auxiliary dc/dc converter's efficiency, and the possibility of bidirectional power flow. Herein, the key PPP architectures are, thus, modeled and benchmarked. The presented results attest to the series configuration as the most efficient PPP circuit solution, with no limits on the system voltage gain, contrary to the generalized results found in today's literature. To assess these results and the significance of the proposed analysis, a well-known, simple, and cost-effective flyback topology has been designed and tested for a series PPP circuit solution able to effectively interface a 5-kW battery energy storage system (BESS) to a 700-V dc grid. A relatively high power conversion efficiency and compact hardware are achieved due to the reduced size requirements on the input and output filtering stages. Above all, while explaining the PPP concept, this study shows that even converter circuits known for their low power efficiency can be used to derive highly efficient systems. A design approach is, thus, provided to facilitate the design of the presented PPP circuit, and measurements are, finally, carried out to compare the obtained results with the expected ones derived from the developed analytical models. Subject Battery chargerbattery energy storage system (BESS)dc-dc power conversionflyback converterpartial power processing (PPP) To reference this document use: http://resolver.tudelft.nl/uuid:5a8b8819-e376-4971-a3a6-c312a301aadf DOI https://doi.org/10.1109/TTE.2022.3170286 Embargo date 2023-07-01 ISSN 2332-7782 Source IEEE Transactions on Transportation Electrification, 8 (3), 3934-3945 Bibliographical note Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2022 P. Granello, Thiago B. Soeiro, N.H. van der Blij, P. Bauer Files PDF Revisiting_the_Partial_Po ... harger.pdf 5.57 MB Close viewer /islandora/object/uuid:5a8b8819-e376-4971-a3a6-c312a301aadf/datastream/OBJ/view