Stmicroelectronics S.r.l.

Antonio Cataliotti

Riccardo Fiorelli

Giovanni Artale

Giuseppe Privitera

Dario Di Cara

Valentina Cosentino

Giovanni Tine

An arc fault detection circuit includes a current sensing circuit coupled to a line conductor carrying a current. The current sensing circuit operates to sense current and output data indicative of the sensed current. A processing circuit implements a frequency transform algorithm to transform the output data to frequency data in a low frequency range and with a high spectral resolution where a minimum short time observation window is concerned. The processing circuit identifies an arc fault condition on the line conductor by identifying differences in said frequency data between at least two subsequent observation windows and identifying characteristics which exceed thresholds.

Arc fault detection equipment and method using low frequency harmonic current analysis

A coupling interface couples a transceiver to one or more capacitive voltage dividers of a power transmission system. The coupling interface includes a first signal path including an adjustable inductance configured to form a resonance circuit with a capacitance associated with the one or more capacitive voltage dividers. The coupling interface may include a second signal path including an adjustable inductance configured to form a resonance circuit with the capacitance associated with the one or more capacitive voltage dividers.

Coupling interfaces for communication transceivers over power lines

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Palermo, Italy

Antonio Cataliotti