Journal
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
Volume 54, Issue 2, Pages 998-1005Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIA.2017.2773430
Keywords
Bidirectional converter; electric vehicles (EVs); integrated transformer; phase control
Funding
- National Science Foundation [1602012]
- Directorate For Engineering
- Div Of Industrial Innovation & Partnersh [1602012] Funding Source: National Science Foundation
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This paper presents an innovative technique for synchronous rectification in a bidirectional CLLC converter with an integrated transformer for plug-in electric vehicle applications. To improve efficiency and power density, the integrated transformer is introduced and simulated using finite element analysis. In addition, synchronous rectification is implemented by controlling the turn-ON and turn-OFF timings based on the phase difference between primary gate pulse and secondary resonant current. Furthermore, a simplified closed-loop design is discussed and implemented on a digital signal processor (TMS320F28335). The effectiveness of the control loop is verified through a 3.3 kW proof-of-concept prototype with peak efficiency of 97.5%.
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