Wideband transducer for measuring a broad range of currents in high voltage conductors
OwnerFrank R. Stockuminventor
Life of this patent
Estimating the term…
Abstract
A system and method for measuring electrical current by measuring magnetic flux density is presented. A magnetic flux density measuring device for measuring a magnetic field strength generated by a current in a conductor includes a ring, a pair of metal strips with high magnetic permeability and a magnetic field sensor. The ring is generally concentric with the conductor and supports the pair of metal strips. The metal strips are located back-to-back and form a gap between the metal strips. The sensor located in the gap to measure the magnetic field strength in the gap.
Claims17
A magnetic flux density measuring device for measuring a magnetic field strength generated by a current in a conductor comprising:
- a cylindrical ring that is generally concentric with the conductor;
- a pair of metal strips that are concentric with the conductor that have a high magnetic permeability and are supported by the ring, wherein the metal strips are located back-to-back and form a gap between the metal strips, wherein a pair of end surfaces of the metal strips lie in planes that contain the centerline of the conductor, and wherein the pair of metal strips are supported by the cylindrical ring;
- and
- a sensor located in the gap to measure the magnetic field strength in the gap.
A system for measuring a magnetic flux density generated by a current in a conductor, comprising:
- a first elongated strip having high magnetic permeability with a first end and a second end;
- a second elongated strip having high magnetic permeability with a first end and a second end;
- a support assembly for supporting the first elongated strip and the second elongated strip so that the first end of the first elongated strip and the second end of the second elongated strip form an air gap between the first end of the first elongated strip and the second end of the second elongated strip;
- a magnetic flux density sensor located in the air gap and positioned between the first end of the first elongated strip and the second end of end the second elongated strip, wherein the support supports the first elongated strip, the second elongated strip and the magnetic flux density sensor outward from the conductor in a plane that is perpendicular to a direction current flows in the conductor;
- wherein the first elongated strip, the second elongated strip and the magnetic flux density sensor form an arc that is concentric with the conductor, wherein the arc is less than 45 degrees, and wherein the magnetic flux density sensor is positioned to measure magnetic flux generated by the conductor that passes from the second end of the first elongated strip to the first end of the first elongated strip, through the air gap to the second end of the second elongated strip to first end of the second elongated strip.
Dependencies are inferred from the claim text.