High-frequency link symmetrical active edge resonant snubbers-assisted ZCS-PWM DC-DC converter

T. Mishima, E. Hiraki, T. Tanaka, M. Nakaoka

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


A novel symmetrical zero current switching (ZCS)-pulse width modulation (PWM) cells-assisted high-frequency transformer link DC-DC converter using insulated gate bipolar transistor (IGBT) modules is presented. The proposed soft switching scheme is based on the switched-capacitor and inductive snubber in the high-voltage side inverter, assisted by active switching of MOSFET synchronous rectifier in the secondary-side low-voltage converter stage. By introducing the ZCS-PWM snubber cells, soft switching commutation which is less sensitive to the current level through the IGBTs can be achieved under the wide output power ranges. The converter circuit topology and the ZCS snubber cell operation are examined and evaluated with simulation results, and the feasibility of the converter topology is verified by experiments using a 1.0kW-25kHz prototype system.

Original languageEnglish
Pages (from-to)907-914
Number of pages8
JournalIET Electric Power Applications
Issue number6
Publication statusPublished - Oct 30 2007
Externally publishedYes

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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