CURRENT SENSORS, SYSTEMS AND METHODS FOR SENSING CURRENT IN A CONDUCTOR

摘要

Embodiments relate to magnetic current sensors. In various embodiments, a current sensor can include a simple conductor having a constant cross-sectional profile, such as round, square or rectangular, and being generally free of any notches or slots to divert current and thereby having a simpler manufacturing process, lower resistance and improved mechanical robustness. In embodiments, the conductor can be formed of a non-magnetic conductive material, such as aluminum or copper.

主权项

1. A current sensing system comprising;
a conductor having a constant cross-section along a current path; a substrate coupled with respect to the conductor; and a plurality of sensor elements arranged on a surface of the substrate, a first of the plurality of sensor elements arranged at a midpoint of the conductor, a second of the plurality of sensor elements arranged on a first side of the first and spaced apart by a distance, and a third of the plurality of sensor elements arranged on a second side of the first and spaced apart by the distance, wherein an output of the sensing system is related to a signal from the first minus a signal from the second divided by two minus a signal from the third divided by two.