Linear electromagnetic device

Patent metadata

Field	Value
Publication number	US-10033178-B2
Application number	US-201514863064-A
Country	US
Kind code	B2
Filing date	Sep 23, 2015
Priority date	Jul 19, 2012
Publication date	Jul 24, 2018
Grant date	Jul 24, 2018

Abstract

A linear electromagnetic device, such as an inductor, transformer or the similar device, may include a core in which a magnetic flux is generable. The device may also include an opening through the core. The device may additionally include a primary conductor received in the opening and extending through the core. The primary conductor may include a substantially square or rectangular cross-section. An electrical current flowing through the primary conductor generates a magnetic field about the primary conductor, wherein substantially the entire magnetic field is absorbed by the core to generate the magnetic flux in the core.

First claim

What is claimed is:

1. A linear electromagnetic device, comprising:
a core in which a magnetic flux is generable;
an opening through the core, wherein the opening through the core comprises an elongated slot, the elongated slot comprising opposite elongated side walls formed by the core that are longer than each end wall of the elongated slot;
a plurality of primary conductors received in the opening and extending through the core, each primary conductor including a substantially square or rectangular cross-section and are each disposed in a single row in the elongated slot, wherein an electrical current flowing through the primary conductors generates a magnetic field about the primary conductors, substantially the entire magnetic field being absorbed by the core to generate the magnetic flux in the core; and
a plurality of secondary conductors received in the opening and extending through the core, wherein the electromagnetic device defines a transformer, each secondary conductor including a substantially square or rectangular cross-section and are each disposed in the single row in the elongated slot adjacent the primary conductors, wherein each of the plurality of primary conductors and each of the plurality of secondary conductors include a predetermined height in a direction transverse to the elongated side walls and each primary conductor and each secondary conductor are less than about one half of the predetermined height from each elongated side wall formed by the core and wherein the plurality of secondary conductors are in a group separate from the plurality of primary conductors.

2. The linear electromagnetic device of claim 1 , wherein a spacing between the primary conductors and the secondary conductors and each elongated side wall of the opening is no more than about one half of a dimension of the cross-section of the primary conductors and secondary conductors in any direction.

3. The linear electromagnetic device of claim 1 , wherein a cross-section of each primary conductor and each secondary conductor of the plurality of primary and secondary conductors comprises a predetermined width in a direction corresponding to a length of the elongated slot and an end conductor on each end of the single row of conductors being less than about one half of the predetermined width from an end of the elongated slot, and the cross-section of each primary conductor and secondary conductor of the plurality of primary and secondary conductors comprising a predetermined height, each primary conductor and secondary conductor being less than about one half of the predetermined height from each elongated side wall of the elongated slot.

4. The linear electromagnetic device of claim 1 , wherein the core comprises a plurality of plates stacked on one another.

5. The linear electromagnetic device of claim 1 , wherein the core comprises one of a silicon-steel alloy core and a nickel-iron alloy core.

6. The linear electromagnetic device of claim 1 , wherein the core comprises a nickel-iron alloy including about 20% iron and about 80% nickel.

7. The linear electromagnetic device of claim 1 , further comprising at least one other core, the at least one other core comprising an opening through which the primary and secondary conductors extend through the at least one other core.

8. The linear electromagnetic device of claim 1 , wherein the core comprises a size corresponding to a predetermined magnetic flux penetration.

9. The linear electromagnetic device of claim 1 , wherein the core comprises dimensions so that at least about 96% of the magnetic field is absorbed by the core to generate the magnetic flux in the core.

10. The linear electromagnetic device of claim 1 , wherein the opposite elongated side walls are connected at each end by a respective one of the end walls, each primary conductor and secondary conductor including a predetermined width in a direction corresponding to the elongated side walls, an end primary conductor and an end secondary conductor being less than about one half of the predetermined width from each respective one of the end walls.

11. The linear electromagnetic device of claim 1 , further comprising a spacing between each end of the elongated slot and a respective end conductor at each end of the single row of primary and secondary conductors, wherein each of the primary and secondary conductors comprise a predetermined width in a direction corresponding to an elongated dimension or length of the elongated slot, the spacing between each end of the elongated slot and the respective end conductor is less than about half of the predetermined width of each of the primary conductors.

12. The linear electromagnetic device of claim 1 , wherein the core comprises a plurality of cores, the opening extending through each core and the plurality of secondary conductors each respectively extending through the opening in different ones of the plurality of cores to couple a selected number of the cores to different respective loads for supplying a different magnitude of electrical output voltage and current to the respective loads.

13. A linear electromagnetic device, comprising:
a core in which a magnetic flux is generable;
an opening through the core, wherein the opening through the core comprises an elongated slot, the elongated slot comprising opposite elongated side walls formed by the core that are longer than each end wall of the elongated slot;
a plurality of primary conductors received in the opening and extending through the core, each primary conductor including a substantially square or rectangular cross-section, wherein an electrical current flowing through the primary conductors generates a magnetic field about the primary conductors, substantially the entire magnetic field being absorbed by the core to generate the magnetic flux in the core; and
a plurality of secondary conductors received in the opening and extending through the core, each secondary conductor including a substantially square or rectangular cross-section to receive an electromotive force transmitted by the core, wherein the secondary conductors are grouped together in a single row and are disposed adjacent the primary conductor which are grouped together in the single row and each conductor includes a predetermined height in a direction transverse to the elongated side walls and each conductor is less than about one half of the predetermined height from each elongated side wall formed by the core.

14. The linear electromagnetic device of claim 13 , wherein a cross-section of each primary conductor of the plurality of conductors and each secondary conductor of the plurality of conductors comprises a predetermined width in a direction corresponding to a length of the elongated slot and an end primary conductor adjacent one end of the elongated slot is less than about one half of the predetermined width from the one end of the elongated slot and an end secondary conductor adjacent an opposite end of the elongated slot being less than about one half of the predetermined width from the opposite end of the elongated slot.

15. The linear electromagnetic device of claim 13 , further comprising at least one other core, the at least one other core comprising an opening through which the primary conductor and the secondary conductor each extend through the at least one other core.

16. The linear electromagnetic device of claim 15 , wherein the core and the at least one other core each comprises a plurality of plates stacked on one another.

17. The linear electromagnetic device of claim 13 , wherein the core compr

Assignees

• Boeing Co

Inventors

• Peck Jr James L

Classifications

• H02J13/333

  the equipment forming part of substations · CPC title

• H02J13/36

  specially adapted for protection systems · CPC title

• H02J3/00

  Circuit arrangements for AC mains or AC distribution networks · CPC title

• H01F27/306

  Fastening or mounting coils or windings on core, casing or other support · CPC title

• G01R33/02

  Measuring direction or magnitude of magnetic fields or magnetic flux (G01R33/20 takes precedence) · CPC title