Title:
LEAKAGE TRANSFORMER
Document Type and Number:
WIPO Patent Application WO/2018/011924
Kind Code:
A1
Abstract:
A leakage transformer (1) is provided with a secondary coil (12b) wound around a leg portion (102b) of a core (10) and a primary coil (11b) wound around the leg portion (102b) on the outside of the secondary coil (12b). Between the primary coil (11b) and the secondary coil (12b), there are provided a non-magnetic spacer (14b) and a plurality of bypass cores (15b) which are magnetic members for causing some of magnetic flux generated in the core (10) to be internally induced. The plurality of bypass cores (15b) are disposed at intervals in the direction of the internally induced magnetic flux. A total value of the intervals of the plurality of bypass cores (15b) is determined by a target value of leakage inductance. A maximum value of the intervals of the plurality of bypass cores (15b) is not more than a value obtained by multiplying a minimum value of the intervals between the bypass cores (15b) and each of the primary coil (11b) and the secondary coil (12b) by a positive coefficient of less than one.
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Inventors:
KOJI YOSHINOBU (JP)
OKUDA WATARU (JP)
OKUDA WATARU (JP)
Application Number:
PCT/JP2016/070735
Publication Date:
January 18, 2018
Filing Date:
July 13, 2016
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H01F38/08; H01F27/24
Domestic Patent References:
| WO2013124941A1 | 2013-08-29 | |||
| WO2014061154A1 | 2014-04-24 |
Foreign References:
| JPS5679415A | 1981-06-30 | |||
| JP2000021659A | 2000-01-21 | |||
| JPH08288086A | 1996-11-01 | |||
| JP2007035664A | 2007-02-08 | |||
| JPH088131A | 1996-01-12 | |||
| JPH09180951A | 1997-07-11 |
Attorney, Agent or Firm:
KIMURA Mitsuru (JP)
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