COMPOSITE WOUND ELEMENT AND TRANSFORMER USING SAME, TRANSFORMATION SYSTEM, AND COMPOSITE WOUND ELEMENT FOR NOISE-CUT FILTER

• US 20120280776A1
• Filed: 12/09/2010
• Published: 11/08/2012
• Est. Priority Date: 01/06/2010
• Status: Abandoned Application

• Current Assignee: Klaus Schmidt
• Original Assignee: Klaus Schmidt
• Inventors: Hashimoto, Hiroshi, Miyazaki, Takayoshi, Zaitsu, Kyoji, Fukumoto, Yoshito, Goto, Yuichiro, Inoue, Kenichi, Mitani, Hiroyuki, Inoue, Koji, Nogi, Toshihiro
• Application Number:
  US13/520,787
• Publication Number:
  US 20120280776A1
• Time in Patent Office: Days
• US Class Current: 336/83
• CPC Class Codes: H01F 17/04 with magnetic core
• CPC Class Codes: H01F 2027/2857 Coil formed from wound foil conductor
• CPC Class Codes: H01F 27/2847 Sheets; Strips H01F27/2866 takes precedence
• CPC Class Codes: H01F 27/2871 Pancake coils
• CPC Class Codes: H02M 1/126 using passive filters

Abstract

Disclosed is a composite wound element (Tra) which is used in a transformer or a transformation system, and used as a composite wound element for a noise-cut filter, wherein a plurality of coils (1) are enclosed in a magnetic connection member (2a), and are configured by winding belt-like conductive members (11, 12, 13) so that the width direction of the conductive members (11, 12, 13) corresponds to the axial direction of the coils (1). The transformer, the transformation system, and the composite wound element for a noise-cut filter are provided with the composite wound element having the aforementioned structure. Thus, the composite wound element (Tra), the transformer, the transformation system, and the composite wound element for a noise-cut filter can be produced more easily than ever before.

Claims

1. A composite wound element comprising:

a plurality of coils; and

a magnetic coupling member for magnetically coupling the coils,

wherein the coils are each formed by winding a belt-shaped conductive member such that a width direction of the conductive member extends along an axial direction of the coils, and are enclosed in the magnetic coupling member.

2. A transformer formed of the composite wound element according to claim 1.

3. The transformer according to claim 2,

wherein a thickness of each conductive member is less than or equal to ⅓

of a skin depth at a frequency of alternating-current power applied to the transformer.

4. The transformer according to claim 2, further comprising:

a polymer material that fills a gap between the magnetic coupling member and the coils.

5. The transformer according to claim 2,

wherein the coils are formed by winding a plurality of belt-shaped conductive members that are stacked together with an insulating member interposed therebetween.

6. The transformer according to claim 5,

wherein, when m and n are different integers of 1 or more, the coils are formed by winding m+n belt-shaped conductive members that are stacked together with the insulating member interposed therebetween,

wherein the m conductive members are connected in series when m is 2 or more, and

wherein the n conductive members are connected in series when n is 2 or more.

7. The transformer according to claim 6,

wherein the ratio of a thickness of the m conductive members to a thickness of the n conductive members is n:

m.

8. The transformer according to claim 2,

wherein the coils are stacked in the axial direction of the coils.

9. The transformer according to claim 2,

wherein the coils are stacked in a radial direction of the coils.

10. The transformer according to claim 2,

wherein the magnetic coupling member is formed of soft magnetic powder.

11. The transformer according claim 2,

wherein each conductive member further includes a soft magnetic body arranged at a side surface that is orthogonal to the axial direction.

12. A transformation system comprising:

a plurality of transformers connected in series,

wherein at least one of the transformers is the transformer according to claim 2.

13. A composite wound element for a noise-cut filter for use in a noise-cut filter unit interposed between a direct-current power source and an alternating-current power system or between the direct-current power source and an alternating-current load, the composite wound element being formed of the composite wound element according to claim 1,

wherein the magnetic coupling member is magnetically isotropic and is formed of soft magnetic powder, and

wherein a thickness of the conductive member in each coil is less than or equal to ⅓

of a skin depth at a frequency of alternating-current power applied to the noise-cut filter unit.

14. The composite wound element for a noise-cut filter according to claim 13,

wherein the coils are stacked in the axial direction of the coils.

15. The composite wound element for a noise-cut filter according to claim 13,

wherein the coils are stacked in a radial direction of the coils.

16. The composite wound element according to claim 1,

wherein each conductive member further includes a soft magnetic body arranged at a side surface that is orthogonal to the axial direction.

17. The composite wound element according to claim 16,

wherein a thickness of the soft magnetic body in a direction orthogonal to the axial direction is less than or equal to a skin depth at a frequency of alternating-current power applied to the composite wound element.

18. The composite wound element according to claim 16,

wherein each conductive member is coated with the soft magnetic body.

19. The composite wound element according to claim,

wherein the soft magnetic body is pressure bonded to each conductive member.