RLE Recent Papers

Current and Voltage Reconstruction From Non-Contact Field Measurements

MIT-energy-monitoring-1

David Lawrence, John S. Donnal, and Steven Leeb

doi:10.1109/JSEN.2016.2574245

Abstract:

Non-contact electromagnetic field sensors can monitor voltage and current in multiple-conductor cables from a distance. Knowledge of the cable and sensor geometry is generally required to determine the transformation that recovers voltages and currents from the sensed electromagnetic fields. This paper presents a new calibration technique that enables the use of non-contact sensors without the prior knowledge of conductor geometry. Calibration of the sensors is accomplished with a reference load or through observation of in situ loads.