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Measurement of DC Currents in the Power Grid by Current Transformer 

Ripka P.; Draxler K.; Styblíková R. (IEEE, 2013)
DC currents in power grids are mainly caused by geomagnetic activity especially during magnetic storms. It is desirable to monitor these currents to prevent saturation of transformers, which may cause blackout. However, ...

Rectangular Array Current Transducer with Integrated microfluxgate Sensors 

Chirtsov A.; Ripka P.; Vyhnánek J. (IEEE SENSORS, 2018)
Novel rectangular yokeless current transducer with the range 400 A using 16 microfluxgate sensors around the busbar conductor is presented in this paper. Compared to yokeless transducers utilizing the differential pair of ...

A 3-Phase Current Transducer based on microfluxgate sensors 

Ripka P.; Grim V.; Chirtsov A. (Elsevier, 2019)
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 ...

Electric Current Sensors: a Review 

Ripka P. (IOP Publishing, 2010)
The review makes a brief overview of traditional methods of measurement of electric current and shows in more detail relatively new types of current sensors. These include Hall sensors with field concentrators, AMR current ...

Eddy Current Linear Speed Sensor 

Mirzaei M.; Ripka P.; Chirtsov A.; Vyhnánek J. (IEEE, 2019)
Novel eddy current speed sensor with axisymmetric coils and solid iron rod as moving part is presented. The analysis is performed for both dc and ac coil currents and for variable iron rod translational speed. The coil ...

Temperature Offset Drift of GMI Sensors 

Malátek M.; Ripka P.; Kraus L. (Elsevier Science, 2008)
Temperature Offset Drift of GMI Sensors is mainly caused by temperature dependence of permeability

AMR Gradiometer for Mine Detection 

Vyhnánek J.; Janošek M.; Ripka P. (Elsevier Science, 2012)
Anisotropic magnetoresistors (AMRs) are used to build an advanced mine detector. The sensing head involves a gradiometric pair of AMR sensors and a continuous-wave driven excitation coil, so the gradiometer is capable of ...

On Cross-Axis Effect of the Anisotropic Magnetoresistive Sensors 

Kubík J.; Včelák J.; Ripka P. (Elsevier Science, 2006)
The article deals with fully digital compass based on AMR sensors and accelerometers. The developed device gives information about actual azimuth, roll and pitch. The article is especially focused on errors caused by sensors ...

Long-Range Magnetic Tracking System 

Včelák J.; Ripka P.; Zikmund A. (IEEE Sensors Council, 2015)
This paper presents a new long-range full 3-D magnetic tracking system for horizontal directional drilling, and describes its performance. The system is able to determine the full 3-D mutual position of the receiver with ...

Field Annealed Closed-path Fluxgate Sensors Made of Metallic-glass Ribbons 

Butvin P.B.; Janošek M.; Ripka P.; Butvinová B.B.; Švec sr. P.Š.; Kuzminski M.K.; Švec Jr. P.Š.; Janičkovič D.J.; Vlasák G.V. (Elsevier Science, 2012)
One-step field annealing of Co-based metallic glass was chosen to acquire low-magnetostrictive material with anisotropy required to reduce noise by favoring magnetization rotation. Despite the risk of bending stress ...
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Ripka P. (50)
Mirzaei M. (14)Chirtsov A. (13)Grim V. (13)Vyhnánek J. (11)Butta M. (7)Přibil M. (6)Draxler K. (5)Janošek M. (5)Včelák J. (5)... View MoreSubjectfluxgate (13)noise (6)Fluxgate (4)speed sensor (4)current sensor (3)current transformer (3)magnetic sensors (3)Eddy currents (2)magnetic sensor (2)Magnetic sensors (2)... View More

České vysoké učení technické v Praze copyright © 2016 

DSpace software copyright © 2002-2016  Duraspace

Contact Us | Send Feedback
Theme by 
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