Research output per year
Research output per year
Christian Oestergaard*, Claus S. Kjeldsen, Morten Nymand
Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review
It is necessary to accurately determine the power losses in a converter to obtain a high efficient design. This paper presents an in-depth analysis of all the power losses in a converter. The capacitive loss of the transformer and switches is investigated. A highly efficient 7:1 planar transformer is presented and the design is carefully interleaved to provide a small differential-mode capacitance and AC-resistance. Very accurate finite element simulations of the transformer equivalent circuit parameters are performed using Ansys Maxwell. A compact 3.5kW hard-switched isolated full-bridge forward converter is constructed with a power density of 9.9kW/L when the heatsink is excluded and 6.4kW/L when the heatsink is included. The calculated and measured peak efficiency of the converter is in close agreement with 98.0% and 97.7% respectively, thereby proving the accuracy of the power loss calculations.
Original language | English |
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Title of host publication | 2021 23rd European Conference on Power Electronics and Applications, EPE 2021 ECCE Europe |
Number of pages | 10 |
Publisher | IEEE |
Publication date | 6. Sept 2021 |
ISBN (Electronic) | 978-9-0758-1537-5 |
Publication status | Published - 6. Sept 2021 |
Event | 23rd European Conference on Power Electronics and Applications, EPE 2021 ECCE Europe - Ghent, Belgium Duration: 6. Sept 2021 → 10. Sept 2021 |
Conference | 23rd European Conference on Power Electronics and Applications, EPE 2021 ECCE Europe |
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Country/Territory | Belgium |
City | Ghent |
Period | 06/09/2021 → 10/09/2021 |
Research output: Thesis › Ph.D. thesis