Improved 3-Phase Current Transducer

Ripka, Pavel; Grim, Václav; Chirtsov, Andrey

doi:10.3390/proceedings2131070

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Methods With Polynomial Estimation1

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2019

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“…Six sensors give suppression up to 2 nd order gradient [30]. In order to null response up to 4 th order gradient, the number sensors should be increased to 8.…”

Section: Methods With Polynomial Estimationmentioning

confidence: 99%

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A 3-phase current transducer based on microfluxgate sensors

2019

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Novel 3-phase DC/AC current transducer for 3-phase current lines is based on 8 integrated fluxgate sensors. Using full information from each sensor rather than gradiometric pairs, we suppress crosstalk between individual phases and external magnetic fields up to the 4th order gradients. The suppression of external currents at a distance of 1 m is 90 dB. The main advantage of the used microfluxgates is excellent temperature stability allowing operation outside the laboratory: the achieved temperature coefficient of the sensitivity is 50 ppm/K, and the offset stability is 1 mA/K. These values are 20-times better than temperature stability achievable with current transducers sensors based on Hall sensors and magnetoresistors.

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“…Six sensors give suppression up to 2 nd order gradient [30]. In order to null response up to 4 th order gradient, the number sensors should be increased to 8.…”

Section: Methods With Polynomial Estimationmentioning

confidence: 99%

“…The first version of our improved 3-phase transducer, using 6 sensors, was described in [30] . Our application also requires the DC current component to be measured.…”

Section: Introductionmentioning

confidence: 99%