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[10s, 2004] 

Journal of Electrical Engineering, Vol 55, 10s (2004) 124-127

CRITICAL PARAMETERS IN CURRENT EVALUATION BY MAGNETIC FIELD MEASUREMENTS

Oriano Bottauscio – Mario Chiampi – Gabriella Crotti – Mauro Zucca

   Current evaluation by magnetic field measurements can be usefully adopted when current direct measurements are not feasible. The same approach is also relevant to the determination of the turn number in a coil in which the electrical current is known. To this end, the solution of an inverse problem is required, entailing the knowledge of the actual disposition of the sources (cables, bar, coils, etc). The uncertainty in the evaluation of the unknown quantities (current amplitude, turn number, etc) is affected by several factors like the characteristics of the probes, their dimension and position, the source geometry. All these aspects and the methods for minimizing the measurement uncertainties are discussed in the present work using a suitable simulation environment.

Keywords: current measurement, probe array, inverse problem


[full-paper]


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