Magnetic core flux sensor

Patent metadata

Field	Value
Publication number	US-9568563-B2
Application number	US-201313773135-A
Country	US
Kind code	B2
Filing date	Feb 21, 2013
Priority date	Jul 19, 2012
Publication date	Feb 14, 2017
Grant date	Feb 14, 2017

Abstract

A magnetic core flux sensor assembly may include a flux sensor core portion and at least one elongated opening for receiving a conductor winding through the flux sensor core portion. An electrical current flowing through the conductor winding generates a magnetic field about the conductor winding and a magnetic flux flow about the elongated opening. A plurality of pairs of sensor holes are positioned relative to the elongated opening for preventing significant disruption of the magnetic flux flow and for sensing the magnetic flux flow at different distances from an edge of the elongated opening. A sensor conductor winding passes through each pair of sensor holes. The magnetic flux flow generates an electrical signal in each sensor conductor winding. The electrical signal in a particular sensor conductor winding corresponds to the magnetic flux flow at a location of the particular sensor conductor winding.

First claim

What is claimed is:

1. A magnetic core flux sensor assembly, comprising:
a flux sensor core portion comprising a same magnetic material throughout;
at least one elongated opening for receiving a conductor winding through the flux sensor core portion, wherein an electrical current flowing through the conductor winding generates a magnetic field about the conductor winding and a magnetic flux flow about the at least one elongated opening in the flux sensor core portion;
a plurality of pairs of sensor holes through the same magnetic material of the flux sensor core portion in a path of the magnetic flux flow in the same magnetic material of the flux sensor core portion and positioned relative to the at least one elongated opening for preventing significant disruption of the magnetic flux flow in the sensor core portion and for use in sensing the magnetic flux flow at different distances from an edge of the at least one elongated opening; and
a separate sensor conductor winding through each pair of sensor holes, the magnetic flux flow generating an electrical signal in each sensor conductor winding, the electrical signal in a particular sensor conductor winding corresponding to the magnetic flux flow at a location of the particular sensor conductor winding.

2. The magnetic flux sensor assembly of claim 1 , wherein the plurality of pairs of sensor holes are each consecutively spaced along a longitudinal side of the at least one elongated opening and with each consecutive pair of sensor holes at an increasing distance from an edge of the longitudinal side of the at least one elongated opening.

3. The magnetic flux sensor assembly of claim 2 , wherein the plurality of consecutive pairs of sensor holes are spaced at a predetermined distance from one another along the longitudinal side of the at least one elongated opening.

4. The magnetic flux sensor assembly of claim 3 , wherein a first sensor hole of each pair of sensor holes is closer to the longitudinal side of the at least one elongated opening than a second sensor hole of each pair of sensor holes.

5. The magnetic flux sensor assembly of claim 4 , wherein the sensor holes of each pair of sensor holes are the same distance apart.

6. The magnetic flux sensor assembly of claim 2 , wherein a first sensor hole of a first pair of sensor holes is at a selected distance from the edge of the at least one elongated opening, a distance of a first sensor hole of each consecutive pair of sensor holes increasing in distance from the edge of the at least one elongated opening by about half the selected distance.

7. The magnetic flux sensor assembly of claim 6 , wherein the first sensor hole and a second sensor hole of each pair of sensor holes are separated by the selected distance, the second sensor hole being the selected distance farther from the longitudinal edge of the at least one elongated opening than the first sensor hole of each pair of sensor holes.

8. The magnetic flux sensor assembly of claim 1 , wherein the plurality of pairs of sensor holes are both sides of the at least one elongated opening.

9. The magnetic flux sensor assembly of claim 1 , wherein each of the sensor holes is an elongated opening.

10. The magnetic flux sensor assembly of claim 1 , wherein the flux sensor core portion comprises a plurality of flux sensor core plates stacked on one another, the at least one elongated opening and the plurality of pairs of sensor holes being formed in each flux sensor core plate.

11. The magnetic flux sensor assembly of claim 10 , further comprising a spacer portion disposed on each outside flux sensor core plate, the spacer portion comprising an opening, the conductor winding passing through the spacer portion opening.

12. The magnetic flux sensor assembly of claim 11 , wherein each spacer portion comprises a plurality of spacer plates stacked on one another.

13. The magnetic flux sensor assembly of claim 11 , wherein the spacer portion comprises a gap for the sensor conductor winding through each pair of sensor holes to connect to a device for detecting the magnetic flux flow at the location of each sensor conductor winding.

14. An electromagnetic device, comprising:
a flux sensor core portion;
at least one elongated opening for receiving a conductor winding through the flux sensor core portion, wherein an electrical current flowing through the conductor winding generates a magnetic field about the conductor winding and a magnetic flux flow about the at least one elongated opening in the flux sensor core portion;
a plurality of pairs of sensor holes positioned relative to the at least one elongated opening for preventing significant disruption of the magnetic flux flow in the sensor core portion and for use in sensing the magnetic flux flow at different distances from an edge of the at least one elongated opening;
a sensor conductor winding through each pair of sensor holes, the magnetic flux flow generating an electrical signal in each sensor conductor winding, the electrical signal in a particular sensor conductor winding corresponding to the magnetic flux flow at a location of the particular sensor conductor winding;
a spacer portion disposed on opposite sides of the flux sensor core, the spacer portion comprising an opening, the conductor winding passing through the spacer portion opening; and
a magnetic core portion disposed on each spacer portion, wherein the at least one elongated opening extends through the magnetic core portion, the conductor winding extending through each magnetic core portion, and wherein the spacer portion comprises a gap for the sensor conductor winding through each pair of sensor holes to connect to a device for detecting the magnetic flux flow at the location of each sensor conductor winding.

15. The electromagnetic device of claim 14 , wherein the plurality of pairs of sensor holes are each consecutively spaced along a longitudinal side of the at least one elongated opening and with each consecutive pair of sensor holes at an increasing distance from an edge of the longitudinal side of the at least one elongated opening.

16. The electromagnetic device of claim 14 , further comprising:
a second elongated opening parallel to the at least one elongated opening through the flux sensor core portion and the magnetic core portion, the conductor winding passing through the second elongated opening, wherein the electrical current flowing through the conductor winding generates the magnetic field about the conductor winding and another magnetic flux flow about the second elongated opening in the flux sensor core portion and the magnetic core portion; and
a second conductor winding passing through the second elongated opening, the at least one elongated opening and the spacer portion opening.

17. The electromagnetic device of claim 16 , further comprising:
another plurality of pairs of sensor holes positioned relative to the second elongated opening for preventing significant disruption of the magnetic flux flow in the sensor core portion and for use in sensing the magnetic flux flow at different distances from an edge of the second elongated opening; and
another sensor conductor winding through each pair of sensor holes positioned relative to the second elongated opening, the magnetic flux flow about the second elongated opening generating an electrical signal in each other sensor conductor winding, the electrical signal in a particular sensor conductor winding corresponding to the magnetic flux flow at the location of the particular sensor conductor winding relative to the second elongated opening.

Assignees

• Boeing Co

Inventors

• Peck Jr James Leo

Classifications

• G01R33/04 Primary

  using the flux-gate principle · CPC title

• G01R33/0011 Primary

  comprising means, e.g. flux concentrators, flux guides, for guiding or concentrating the magnetic flux, e.g. to the magnetic sensor · CPC title

• H01F27/402

  Association of measuring or protective means · CPC title

• H01F27/40 Primary

  Structural association with built-in electric component, e.g. fuse · CPC title

• H01F30/06

  characterised by the structure · CPC title