A frequency controlled Bi-directional synchronous rectifier converter for HEV using super-capacitor

Sung Geun Yoon, Jae Moon Lee, Jong Hu Park, In Kyu Lee, B. H. Cho

Research output: Contribution to journalConference articlepeer-review

14 Citations (Scopus)


In this paper, a control method of a bi-directional zero-voltage-switching (ZVS) DC-DC converter for HEV power system is presented. By controlling the minimum and maximum values of the inductor current, the ZVS condition is achieved. Also employing the variable frequency control with respect to the variation of the DC-link current and the super-capacitor voltage, the circulating energy loss at the light load condition is minimized. A 1.25kW experimental hardware prototype module is built to verity the efficiency improvement, especially at the light load condition. It shows about 34% efficiency improvement compared to the fixed frequency control at the light load condition.

Original languageEnglish
Pages (from-to)135-140
Number of pages6
JournalPESC Record - IEEE Annual Power Electronics Specialists Conference
Publication statusPublished - 2004
Event2004 IEEE 35th Annual Power Electronics Specialists Conference, PESC04 - Aachen, Germany
Duration: 2004 Jun 202004 Jun 25

ASJC Scopus subject areas

  • Modelling and Simulation
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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