Sensor for measuring current in a conductor

Patent metadata

Field	Value
Publication number	US-10670634-B2
Application number	US-201515522296-A
Country	US
Kind code	B2
Filing date	Oct 21, 2015
Priority date	Oct 29, 2014
Publication date	Jun 2, 2020
Grant date	Jun 2, 2020

Abstract

A sensor, for measuring current in a conductor, has a stack with at least one isolation layer and at least two metallization layers stacked in a z direction, a first winding of conductive material and a second winding of conductive material, the first and second winding each having first and second parts formed in a metallization layer in the stack and mainly extending respectively in y and z directions and respectively having first and second centers of gravity. The first and second centers of gravity are respectively in first and second planes, wherein the first plane intersects with the second plane in a common intersection line in the second direction. The z direction and the y direction are orthogonal. The sensor has measurer configured to measure current through the first and second winding.

First claim

The invention claimed is:

1. A sensor for measuring current in a conductor, the sensor comprising:
a stack including an isolation layer, a first metallization layer, and a second metallization layer, the first and second metallization layers being stacked in a z direction;
a first winding and a second winding each including a conductive material, the first winding and the second winding each including a first part, formed in at least one of the metallization layers included in the stack and mainly extending in a y direction and having a first center of gravity, and a second part, formed in at least one of the metallization layers included in the stack and mainly extending in a direction opposite to the y direction and having a second center of gravity; and
a measurer configured to measure current through the first winding and current through the second winding,
wherein the first center of gravity of the first winding and the second center of gravity of the first winding are in a first plane,
wherein the first center of gravity of the second winding and the second center of gravity of the second winding are in a second plane,
wherein the first plane intersects with the second plane in a common intersection line in the y direction, and
wherein the z direction and the y direction are mutually orthogonal.

2. The sensor of claim 1 , wherein the first and second part of the first winding are in different metallization layers, included in the stack, and
wherein the first and second part of the second winding are in the first metallization layer included in the stack.

3. The sensor of claim 1 , further comprising:
an additional first winding including the conductive material, connected in series with the first winding, the additional first winding including:
a first part, formed in the first metallization layer included in the stack and mainly extending in the y direction and having a first center of gravity, and
a second part, formed in the second metallization layers included in the stack and mainly extending in a direction opposite to the y direction and having a second center of gravity,
wherein the first center of gravity of the additional first winding and the second center of gravity of the additional first winding being on an additional first line included in an additional first plane, and
wherein the additional first plane is parallel to the first plane.

4. The sensor of claim 1 , wherein the first winding and the second winding are in different circuits,
wherein the measurer is configured to measure current in the first winding and the second winding individually, and
wherein the sensor further comprises a comparer configured to compare the measured currents.

5. The sensor of claim 1 , wherein the first winding and the second winding are connected in series with each other.

6. A sensor for measuring current in a conductor, the sensor comprising:
a stack including an isolation layer, a first metallization layer, and a second metallization layer, the first and second metallization layers being stacked in a z direction;
a first winding and a second winding each including a conductive material, the first winding and the second winding each including a first part, formed in at least one of the metallization layers included in the stack and mainly extending in a y direction and having a first center of gravity, and a second part, formed in at least one of the metallization layers included in the stack and mainly extending in a direction opposite to the y direction and having a second center of gravity; and
a measurer configured to measure current through the first winding and current through the second winding,
wherein the first center of gravity of the first winding and the second center of gravity of the first winding are in a first plane,
wherein the first center of gravity of the second winding and the second center of gravity of the second winding are in a second plane,
wherein the first plane intersects with the second plane in a common intersection line in the y direction,
wherein the z direction and the y direction are mutually orthogonal, and
wherein a first intersection line of the first plane with a reference plane perpendicular to they direction and a second intersection line of the second plane with the reference plane are at opposite angles with equal value in the z direction.

7. The sensor of claim 5 , wherein the first winding and the second winding are windings of a coil.

8. The sensor of claim 6 , wherein the first winding and the second winding are windings of a coil.

Assignees

• Eaton Ind Netherlands Bv
• Eaton Intelligent Power Ltd

Inventors

• Dragt Johannes Dirk Gerrit

Classifications

• G01R15/185 Primary

  with compensation or feedback windings or interacting coils, e.g. 0-flux sensors (using galvano-magnetic field sensors G01R15/20; conversion of DC into AC using transductors G01R19/20) · CPC title

• G01R19/0092

  Measuring current only · CPC title

• G01R15/181 Primary

  using coils without a magnetic core, e.g. Rogowski coils · CPC title