Power converter

Patent metadata

Field	Value
Publication number	US-11031177-B2
Application number	US-201615756097-A
Country	US
Kind code	B2
Filing date	Aug 24, 2016
Priority date	Sep 1, 2015
Publication date	Jun 8, 2021
Grant date	Jun 8, 2021

Abstract

A power converter includes a magnetic core and a plurality of windings. The plurality of windings are each wound around the magnetic core and bent to have a portion extending in the direction in which the magnetic core extends. Each of the plurality of windings is bent to include a region located farthest out from the magnetic core among all of the plurality of windings.

First claim

The invention claimed is:

1. A power converter comprising:
a magnetic core; and
two windings each wound around the magnetic core,
each of the two windings including a first bent portion, a second bent portion, a first portion between one end and the first bent portion of the winding, and a second portion between the other end opposite to the one end and the second bent portion of the winding, the one end and the other end being ends relative to a plane extending along a central axis of the windings and from the central axis toward the bent portions,
the first and second portions extending parallel to an axis along which the magnetic core extends through the windings, and
a direction in which the first portion extends from the first bent portion is opposite to a direction in which the second portion extends from the second bent portion.

2. The power converter according to claim 1 , wherein
the first portion of one winding of the two windings is disposed outward of the first portion of the other winding different from the one winding, and
the second portion of the other winding of the two windings is disposed outward of the second portion of the one winding.

3. A power converter comprising:
a magnetic core; and
two windings each wound around the magnetic core,
each of the two windings including a first bent portion, a second bent portion, a first portion between one end and the first bent portion of the winding, and a second portion between the other end opposite to the one end and the second bent portion of the winding, the one end and the other end being ends relative to a plane extending along a central axis of the windings and from the central axis toward the bent portions,
the first and second portions extending parallel to an axis along which the magnetic core extends through the windings, and
each of the plurality of windings is bent so that a direction in which the first portion extends from the first bent portion is identical to a direction in which the second portion extends from the second bent portion.

4. The power converter according to claim 3 , wherein
one winding of the two windings includes a third portion between the first portion and the second portion of the one winding, the other winding of the two windings that is different from the one winding includes a third portion between the first portion and the second portion of the other winding, and the third portion of the one winding and the third portion of the other winding are superposed on each other, and
the first portion of the one winding and the first portion of the other winding are coplanar, and the second portion of the one winding and the second portion of the other winding are coplanar.

5. The power converter according to claim 1 , further comprising a heat dissipater disposed in contact with one end face of the magnetic core, wherein
the region of each of the plurality of windings that is located farthest out is in contact with the heat dissipater through a high-heat-dissipation insulating member.

6. The power converter according to claim 5 , wherein
the high-heat-dissipation insulating member has a thermal conductivity of 0.5 W/mK or more.

7. The power converter according to claim 1 , wherein at least a part of a surface of the magnetic core is exposed outward.

8. The power converter according to claim 3 , further comprising a heat dissipater disposed in contact with one end face of the magnetic core, wherein
the region of each of the plurality of windings that is located farthest out is in contact with the heat dissipater through a high-heat-dissipation insulating member.

9. The power converter according to claim 8 , wherein
the high-heat-dissipation insulating member has a thermal conductivity of 0.5 W/mK or more.

10. The power converter according to claim 3 , wherein at least a part of a surface of the magnetic core is exposed outward.

Assignees

• Mitsubishi Electric Corp

Inventors

• Nakajima Koji
• Kumagai Takashi
• Tahara Jun

Classifications

• H01F30/10 Primary

  Single-phase transformers (H01F30/16 takes precedence) · CPC title

• H02M3/28

  using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC · CPC title

• H01F17/04

  with magnetic core · CPC title

• H01F27/323

  Insulation between winding turns, between winding layers · CPC title

• H01F27/2847

  Sheets; Strips (H01F27/2866 takes precedence) · CPC title