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A dual active bridge topology with increased voltage conversion range

  • We present a dual active bridge topology suitable for wide voltage range applications covering all combinations of 200V to 600V on the input and 20V to 60V on the output with constant power of 1kW.We employ a stepped inductance scheme to adjust the effective inductance of the converter, thus extending the efficient operation range. Using a variable switching frequency between 35 kHz and 150 kHz with operation-point-dependent limits further increases the performance of the converter. A prototype was built and the proposed changes have been compared to a fixed frequency, fixed inductance implementation. Measurements show a maximum loss reduction of 40 %, leading to a peak efficiency of 97% while maintaining constant output power over the entire working area.

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Metadaten
Name:Wattenberg, Martin; Pfost, Martin
URL:https://ieeexplore.ieee.org/document/8515334
ISBN:978-90-75815-28-3
Erschienen in:2018 20th European Conference on Power Electronics and Applications (EPE '18 ECCE Europe) : 17-21 Sept. 2018
Publisher:IEEE
Place of publication:Piscataway, NJ
Document Type:Conference Proceeding
Language:English
Year of Publication:2018
Tag:DC power supply; ZVS converters; high frequency power converter; soft switching; transformer
Pagenumber:9
First Page:1
Last Page:9
Dewey Decimal Classification:620 Ingenieurwissenschaften und Maschinenbau
Open Access:Nein
Licence (German):License Logo  Lizenzbedingungen IEEE