Title:
COMPOSITE MATERIAL, REACTOR CORE, REACTOR, CONVERTER, AND POWER CONVERSION DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/128034
Kind Code:
A1
Abstract:
This reactor (1) is provided with a coil (2), and a magnetic core (3) that is positioned on the inside and outside of the coil (2), and which forms a closed magnetic circuit. At least part of the magnetic core (3) is made from a composite material that contains a magnetic powder made from a single material, and an encapsulating resin having this powder dispersed therein. There are a plurality of peaks in the grain size distribution of the magnetic powder. That is to say, the magnetic powder contains a high frequency of both fine powder and rough powder. By containing a fine powder, this composite material can reduce the eddy current loss, making it a low-loss material. The fact that the powder is a mixed powder containing a fine powder and a rough powder increases the filling factor of the magnetic powder, and gives this composite material a high saturation flux density. By using a mixed powder, the raw material powder becomes easier to handle, and the composite material is very easy to produce.
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Inventors:
INABA KAZUHIRO (JP)
Application Number:
PCT/JP2012/055777
Publication Date:
September 27, 2012
Filing Date:
March 07, 2012
Export Citation:
Assignee:
SUMITOMO ELECTRIC INDUSTRIES (JP)
INABA KAZUHIRO (JP)
INABA KAZUHIRO (JP)
International Classes:
H01F1/20; H01F1/26; H01F27/255; H01F37/00
Foreign References:
| JP2007162103A | 2007-06-28 | |||
| JP2006283166A | 2006-10-19 | |||
| JP2006100292A | 2006-04-13 |
Attorney, Agent or Firm:
SunCrest Patent and Trademark Attorneys (JP)
Patent business corporation Sun Crest international patent firm (JP)
Patent business corporation Sun Crest international patent firm (JP)
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