NDLI: Three-phase high frequency transformer design for a three-phase current-fed dc/dc converter with active clamp

Content Provider	IEEE Xplore Digital Library
Author	Hanju Cha Jungwan Choi
Copyright Year	2007
Description	Author affiliation: Chungnam Nat. Univ., Daejeon (Hanju Cha)
Abstract	In this paper, a new three-phase three-leg high frequency transformer is proposed for three-phase dc-dc converter and operating principle of a three-phase current-fed dc/dc converter with active clamp is introduced. The three-phase dc/dc converter transfers power in the discontinuous current mode through transformer leakage inductances and a single common active clamp branch is employed for zero-voltage switching (ZVS) in all active switches. In other words, single- phase current-fed dc/dc conversion concept is extended to the three-phase current-fed dc/dc converter by employing commonly used three-phase full bridge converter topology. However, three- phase transformer was constructed by connecting three discrete single-phase transformers with delta-delta winding and resulted in more volume and material cost. Therefore, a new three-phase three-leg high frequency transformer is designed and three discrete cores are integrated into single transformer core. The proposed transformer is analyzed in the several operating modes of the converter and its design rules are derived. And confirmed by simulation.
Starting Page	204
Ending Page	208
File Size	1342966
Page Count	5
File Format	PDF
ISBN	9788986510072
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-10-08
Publisher Place	South Korea
Access Restriction	Subscribed
Rights Holder	KIEE
Subject Keyword	Frequency conversion DC-DC power converters Clamps Phase transformers Zero voltage switching Transformer cores Switches Bridges Topology Joining processes
Content Type	Text
Resource Type	Article

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