Journal
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
Volume 68, Issue 1, Pages 213-223Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TVT.2018.2881276
Keywords
Bidirectional; CLLC; DC-DC conversion; electric vehicle; high power density; MHz; planar transformer
Categories
Funding
- U.S. National Science Foundation [1507546, 1602012]
Ask authors/readers for more resources
In this paper, a bidirectional CLLC converter operating at MHz-level switching frequency is proposed to achieve high power density and high efficiency. An optimized stacked printed circuit board winding based planar transformer with adjustable leakage inductance is modeled and designed for the proposed converter. It is enabled using gallium nitride devices to achieve fast switching with low switching losses. A detailed power loss model is established for the efficient thermal design of the converter. A proof-of-concept hardware of 3.3 kW, 400-450 V-DC input, 250-420 V-DC output CLLC converter with 1MHz operating frequency is built and tested over a wide range of loading conditions. The power density of the system is 9.22 W/cm(3) (151.1 W/in(3)) and the peak efficiency achieves over 97%.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available