Bi-Directional CLLC Converter with Synchronous Rectification for Plug-In Electric Vehicles

Shenli Zou; Jiangheng Lu; Ayan Mallik; Alireza Khaligh

doi:10.1109/TIA.2017.2773430

Bi-Directional CLLC Converter with Synchronous Rectification for Plug-In Electric Vehicles

Shenli Zou, Jiangheng Lu, Ayan Mallik, Alireza Khaligh

Research output: Contribution to journal › Article › peer-review

136 Scopus citations

Abstract

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%.

Original language	English (US)
Pages (from-to)	998-1005
Number of pages	8
Journal	IEEE Transactions on Industry Applications
Volume	54
Issue number	2
DOIs	https://doi.org/10.1109/TIA.2017.2773430
State	Published - Mar 1 2018
Externally published	Yes

Keywords

Bidirectional converter
electric vehicles (EVs)
integrated transformer
phase control

ASJC Scopus subject areas

Control and Systems Engineering
Industrial and Manufacturing Engineering
Electrical and Electronic Engineering

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10.1109/TIA.2017.2773430

Cite this

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title = "Bi-Directional CLLC Converter with Synchronous Rectification for Plug-In Electric Vehicles",

abstract = "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%.",

keywords = "Bidirectional converter, electric vehicles (EVs), integrated transformer, phase control",

author = "Shenli Zou and Jiangheng Lu and Ayan Mallik and Alireza Khaligh",

note = "Funding Information: Manuscript received July 19, 2017; revised October 31, 2017; accepted November 8, 2017. Date of publication November 12, 2017; date of current version March 19, 2018.Paper 2017-ESC-0731.R1, presented at the 2017 IEEE Industry Applications Society Annual Meeting, Cincinnati, OH, USA, Oct. 4–5, and approved for publication in the IEEE TRANSACTIONS ON INDUSTRY APPLI-CATIONS by the Energy Systems Committee of the IEEE Industry Applications Society. This work was supported by the National Science Foundation under Grant 1602012. (Corresponding author: Alireza Khaligh.) The authors are with the Maryland Power Electronics Laboratory, Department of Electrical and Computer Engineering, Institute for Systems Research, University of Maryland, College Park, MD 20742 USA (e-mail: slzou@umd.edu; jlu12346@terpmail.umd.edu; mallik@umd.edum; khaligh@ece.umd.edu). Publisher Copyright: {\textcopyright} 1972-2012 IEEE.",

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doi = "10.1109/TIA.2017.2773430",

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AU - Zou, Shenli

AU - Lu, Jiangheng

AU - Mallik, Ayan

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N1 - Funding Information: Manuscript received July 19, 2017; revised October 31, 2017; accepted November 8, 2017. Date of publication November 12, 2017; date of current version March 19, 2018.Paper 2017-ESC-0731.R1, presented at the 2017 IEEE Industry Applications Society Annual Meeting, Cincinnati, OH, USA, Oct. 4–5, and approved for publication in the IEEE TRANSACTIONS ON INDUSTRY APPLI-CATIONS by the Energy Systems Committee of the IEEE Industry Applications Society. This work was supported by the National Science Foundation under Grant 1602012. (Corresponding author: Alireza Khaligh.) The authors are with the Maryland Power Electronics Laboratory, Department of Electrical and Computer Engineering, Institute for Systems Research, University of Maryland, College Park, MD 20742 USA (e-mail: slzou@umd.edu; jlu12346@terpmail.umd.edu; mallik@umd.edum; khaligh@ece.umd.edu). Publisher Copyright: © 1972-2012 IEEE.

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N2 - 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%.

AB - 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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KW - integrated transformer

KW - phase control

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Bi-Directional CLLC Converter with Synchronous Rectification for Plug-In Electric Vehicles

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