Data di Pubblicazione:
2001
Citazione:
A linearization method for commercial Hall-effect current transducers / L. Cristaldi, A. Ferrero, M. Lazzaroni, R. Ottoboni. - In: IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT. - ISSN 0018-9456. - 50:5(2001 Oct), pp. 1149-1153.
Abstract:
The need for high-current transducers featuring wide-band and high-insulation levels is becoming a more and more
impelling need in the electric power network, as the current distortion
increases due to the proliferation of nonlinear, time-variant loads. The closed-loop Hall-effect current transducers show a good compromise between cost and metrological performance. On the other hand, they may introduce an unacceptable nonlinearity error when the dynamic range of the input current is a reduced portion of the dynamic range of the transducer and may show a large drift of
their gain with temperature. The paper proposes a simple method for reduction of the nonlinearity error when the input signal is an unbiased sinewave and the automatic calibration of the gain. Experimental results are also reported, showing the method effectiveness.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Closed-loop Hall-effect transducers; Compensation methods; Current transducers; Linearization methods
Elenco autori:
L. Cristaldi, A. Ferrero, M. Lazzaroni, R. Ottoboni
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