Magnetic Crosstalk Minimization in Optical Current Sensors

Perciante, César D.; Ferrari, José A.

doi:10.1109/tim.2008.919913

Cited by 15 publications

(10 citation statements)

References 5 publications

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“…Schemes to reduce the magnetic crosstalk in three-phase electric systems have been proposed [6]. However, if the detection scheme forms a closed circuit around the electrical conductor, as most of them do, it will not be sensitive to external magnetic fields.…”

Section: All-fiber Sensorsmentioning

confidence: 99%

“…This problem takes special relevance when measuring current in three phase systems, since the three conductors are usually close to each other. Studies have also been developed to minimize the crosstalk between different conductors [6]. Another possible solution is using a triangular shaped bulk optic material in which the light is always reflected at the critical angle [31], as shown in Figure 10.…”

Section: Bulk-optic Current Sensorsmentioning

confidence: 99%

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Optical Current Sensors for High Power Systems: A Review

et al. 2012

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Abstract:The intrinsic advantages of optical sensor technology are very appealing for high voltage applications and can become a valuable asset in a new generation of smart grids. In this paper the authors present a review of optical sensors technologies for electrical current metering in high voltage applications. A brief historical overview is given together with a more detailed focus on recent developments. Technologies addressed include all fiber sensors, bulk magneto-optical sensors, piezoelectric transducers, magnetic force sensors and hybrid sensors. The physical principles and main advantages and disadvantages are discussed. Configurations and strategies to overcome common problems, such as interference from external currents and magnetic fields induced linear birefringence and others are discussed. The state-of-the-art is presented including commercial available systems.

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Section: All-fiber Sensorsmentioning

confidence: 99%

Section: Bulk-optic Current Sensorsmentioning

confidence: 99%

Optical Current Sensors for High Power Systems: A Review

et al. 2012

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“…(23). While the distance between two conductors was 0.6 m and θ was 45.0179 deg, 0 to 1440 A current were applied to conductor-2.…”

Section: Resultsmentioning

confidence: 99%

“…11,[20][21][22][23][24] For example, the magnetic shielding technique was applied to stop the external magnetic field from invading into POCS. 11,[20][21][22][23][24] For example, the magnetic shielding technique was applied to stop the external magnetic field from invading into POCS.…”

Section: Introductionmentioning

confidence: 99%

“…11,[20][21][22][23][24] For example, the magnetic shielding technique was applied to stop the external magnetic field from invading into POCS. 23 However, the small loop is difficult to produce, and the POCS will be affected by the current flowing through the small loop of adjacent phase conductor. An active compensation method reported by Niewczas et al suggested to determinate the matrix M and to compensate the crosstalk in real time.…”

Section: Introductionmentioning

confidence: 99%

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Research on zero-sum magnetic field integral technology of optical current sensors

Zhang

et al. 2013

Opt. Eng

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An architecture based on the Faraday effect to minimize the crosstalk effect in optical current sensors (OCSs) is proposed. It was demonstrated that the magnetic field integral along a discrete loop can meet Ampere's law under certain conditions, and the mathematical model of zero-sum points was given. Based on it, a zero-sum OCS (ZOCS) was proposed, which consists of several OCSs forming a symmetrical discrete loop. Ideally, the currents that flow outside the ZOCS do not contribute to the measurement of the currents inside it. The experimental results showed that the magnetic crosstalk-induced errors of ZOCS were less than 0.2%, and the influence of external current was reduced one order compared with conventional OCSs.

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Magneto‐optics

2019

Crystal Optics

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Magnetic Crosstalk Minimization in Optical Current Sensors

Cited by 15 publications

References 5 publications

Optical Current Sensors for High Power Systems: A Review

Optical Current Sensors for High Power Systems: A Review

Research on zero-sum magnetic field integral technology of optical current sensors

Magneto‐optics

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