Browse > Article
http://dx.doi.org/10.6113/TKPE.2021.26.5.376

Performance of an SiC-MOSFET Based 11-kW Bi-directional On-board Charger  

Lee, Sang-Youn (Dept. of Electrical Engineering, Myongji University)
Lee, Woo-Seok (Dept. of Electrical Engineering, Myongji University)
Lee, Jun-Young (Dept. of Electrical Engineering, Myongji University)
Lee, Il-Oun (Dept. of Electrical Engineering, Myongji University)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.26, no.5, 2021 , pp. 376-379 More about this Journal
Abstract
The design and performance of a SiC-MOSFET-based 11-kW bi-directional on-board charger (OBC) for electric vehicles is presented. The OBC consists of a three-phase two-level AC/DC converter and a CLLLC resonant converter. All the power devices are implemented with SiC-MOSFETs to reduce the conduction losses generated in the OBC, and the DC-link voltage is designed to track the level of battery voltage in the forward and reverse powering modes. As a result, the CLLLC resonant converter always runs at the switching frequency near the resonant frequency, resulting in high-efficiency operation at the maximum powering modes. As the DC-link voltage varies according to the battery voltage, the AC/DC converter in the proposed OBC adopts an adaptive DC-link voltage controller. The performance of the proposed 11-kW OBC is verified by a prototype converter with the following specifications: three-phase 60-Hz 380-V input, 11-kW capacity, and battery voltage range of 214-413-V, resulting in the conversion efficiency of over 95.0-% in the forward and reverse powering modes.
Keywords
On-board charger; Bi-directional power transfer; CLLLC resonant converter;
Citations & Related Records
연도 인용수 순위
  • Reference
1 B. Li, Q. Li, F. C. Lee, Z. Liu, and Y. Yang, "A high-efficiency high-density wide-bandgap device-based bidirectional on-board charger," IEEE J. Emerg. Sel. Topics Power Electron., Vol. 6, No. 3, pp. 1627-1636, 2018.   DOI
2 A. Khaligh and M. D'Antonio, "Global trends in high-power on-board chargers for electric vehicles," IEEE Transactions on Vehicular Technology, Vol. 68, No. 4, pp. 3306-3324, Apr. 2019.   DOI
3 B. Lee, J. Kim, S. Kim, and J. Lee, "An isolated/bidirectional PWM resonant converter for V2G(H) EV on-board charger," IEEE Transactions on Vehicular Technology, Vol. 66, No. 9, pp. 7741-7750, Sep. 2017.   DOI
4 P. Palanivel and S. S. Dash, "Multicarrier pulse width modulation methods based three phase cascaded multilevel inverter including over modulation and low modulation indices," in 2009 IEEE Region 10 Conference, pp. 1-6, 2009.