High-density nanocrystalline core transformer for high-power high-frequency resonant converter

被引：98
|
作者：
Shen, Wei [1 ]
Wang, Fei [2 ]
Boroyevich, Dushan [2 ]
Tipton, C. Wesley [3 ]
机构：
[1] Linear Technol Corp, Milpitas, CA 95035 USA
[2] Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA
[3] USA, Res Lab, Adelphi, MD 20783 USA
来源：
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS | 2008年 / 44卷 / 01期
基金：
美国国家科学基金会;
关键词：
high-frequency transformer design; high power density; nanocrystalline material; resonant converter;
D O I：
10.1109/TIA.2007.912726
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A high-density transformer, using nanocrystalline core is developed for a 30 kW, 200 kHz resonant converter. Loss models are established for nanocrystalline cores through experimental characterization. The important parasitic models are also developed considering litz wire effects. Following a minimum size design procedure, several transformers with both nanocrystalline and ferrite cores are designed and prototyped. While all transformers meet the converter performance requirement during testing, using nanocrystalline core can achieve a significantly higher power density even at 200 kHz.
引用
收藏
页码：213 / 222
页数：10
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