Journal
IEEE TRANSACTIONS ON POWER ELECTRONICS
Volume 30, Issue 12, Pages 7138-7148Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2015.2390913
Keywords
Current control; dc-dc power converters; error correction; modeling; modulation; power system control; switched-mode power supply
Categories
Funding
- European Union's Seventh Framework Program for Fuel Cells and Hydrogen Joint Technology Initiative [621213]
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In this paper, a variable-frequency modulation method for a dual active bridge converter is introduced. The proposed method ensures zero-voltage switching over a wide power range with a minimal circulating current. Unlike previously presented modulation schemes, this modulation method can also be used for half-bridge variants of a traditional dual active bridge converter. The modulation method is given in a closed form, which makes it easy to apply in practice. Further, the phase drift phenomenon is discussed, and a simple phase drift compensation scheme is presented. Finally, a detailed analysis of the proposed modulation method is provided and its feasibility is verified by measurements.
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