US 12,455,305 B2
Projection distribution of magnetic field sensors for measuring a magnetic field of a conductor of an electric current
Roland Weiss, Erlangen (DE); Florian Zapf, Bayer (DE); and Karl Fleisch, Erlangen (DE)
Assigned to SIEMENS AKTIENGESELLSCHAFT, Munich (DE)
Appl. No. 17/928,038
Filed by Siemens Aktiengesellschaft, Munich (DE)
PCT Filed May 6, 2021, PCT No. PCT/EP2021/061943
§ 371(c)(1), (2) Date Nov. 28, 2022,
PCT Pub. No. WO2021/239426, PCT Pub. Date Dec. 2, 2021.
Claims priority of application No. 10 2020 206 527.6 (DE), filed on May 26, 2020.
Prior Publication US 2023/0213562 A1, Jul. 6, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G01R 21/08 (2006.01); G01R 33/02 (2006.01)
CPC G01R 21/08 (2013.01) [G01R 33/0206 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An apparatus for measuring a magnetic field of a conductor of an electric current, the apparatus comprising:
three magnetic field sensors arranged on a circumference of a non-circular ellipse defined by parallel projection or orthogonal projection of a circle;
wherein three first positions are defined as three points equidistant from one another arranged on a circumference of the circle,
wherein the parallel projection or the orthogonal projection of the circle includes a projection of the three first positions onto three respective second positions on the non-circular ellipse;
wherein the three magnetic field sensors are arranged at the three second positions; and
wherein the magnetic field is measured without using a flux concentrator.