A new geometry of integrated inductors for twochannel interleaved bidirectional converter is presented in this paper. The new geometry module integrates two individual inductors by stacking three I-cores. The middle I-core provides a shared flux path with low reluctance which uncouples the two inductors. The air gaps are constructed by separating the I-cores using copper foil windings with well-defined thickness. In this work, inverse connection and direct connection for the two integrated inductors have been analyzed. For the inverse connection, a unique saturation behavior in the middle I-core has been shown. The integrated inductors with new geometry make it possible to build low-profile, low-cost, flexibility DC/DC converters, and it can be extensively designed for low-voltage and high-current required by modern digital applications. Experiment results obtained from a 48V-12V 30A two-phase interleaved buck converter, demonstrates the difference in the inverse connection and the direct connection. Both efficiencies are above 91% from half to full output current.
|Title of host publication||IECON 2010 : 36. Annual Conference of IEEE Industrial Electronics|
|Publication status||Published - 2010|
|Event||36. Annual Conference of the IEEE Industrial Electronics Society - Phoenix, Arizona|
Duration: 1 Jan 2010 → …
Conference number: 26
|Conference||36. Annual Conference of the IEEE Industrial Electronics Society|
|Period||01/01/2010 → …|
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Ouyang, Z., Thomsen, O. C., Andersen, M. A. E., Poulsen, O., & Björklund, T. (2010). New Geometry Integrated Inductors in Two-channel Interleaved Bidirectional Converter. In IECON 2010: 36. Annual Conference of IEEE Industrial Electronics https://doi.org/10.1109/IECON.2010.5675219