• A 3-Phase Current Transducer based on microfluxgate sensors 

      Autor: 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 ...
    • A Busbar Current Sensor With Frequency Compensation 

      Autor: Grim, V.; Petrucha, V.; Ripka, P.
      (IEEE, 2017)
      DC/AC yokeless galvanically insulated electric current sensors are required for applications, e.g., in automotive and aerospace engineering, where size, weight, and/or price are strictly limited. A busbar current sensor ...
    • Current Sensor in PCB Technology 

      Autor: Ripka, Pavel; Kubík, Jan; Duffy, Maeve; Hurley, William Gerard; O’Reilly, Stephen
      (IEEE, 2005-06)
      A novel DC/AC current sensor works on the fluxgate principle. The core in the form of a 7/10-mm ring made of electrodeposited permalloy is sandwiched in the middle of a printed circuit board (PCB), whereas the sensor ...
    • DC current sensor using switching-mode excited in-situ current transformer 

      Autor: Grim V.; Ripka P.; Bauer J.
      (Elsevier, 2020)
      DC current component in the power grid may cause gross measurement errors and lead to overheating of power transformers. We have previously developed method how to measure DC current using fluxgate effect in existing current ...
    • Double-Core GMI Current Sensor 

      Autor: Malátek, Michal; Ripka, Pavel; Kraus, Luděk
      (IEEE, 2005-10)
      A novel design of the giant magnetoimpedance contactless current sensor is presented. A double-core structure is used in order to improve the temperature stability. The temperature coefficient of sensitivity and offset ...
    • Effect of external DC field on current transformers with amorphous and nanocrystalline cores 

      Autor: Ripka P.; Mirzaei M.; Mlejnek P.
      (Elsevier, 2022)
      Nanocrystalline and amorphous stress-annealed and field annealed tapes are used for cores of DC-tolerant current transformers. We analyze the influence of external DC field of arbitrary direction on the performance of these ...
    • Electric Current Sensors: a Review 

      Autor: 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 ...
    • Fyzikální simulace chování integrovaných proudových senzorů 

      Autor: Matěj Hašek; Vedoucí práce: Janíček Vladimír; Oponent práce: Setnička Karel
      (České vysoké učení technické v Praze. Vypočetní a informační centrum.Czech Technical University in Prague. Computing and Information Centre., 2024-06-20)
      Tato práce se věnuje problematice teplotních vlivů na proudové integrované senzory a celé systémy. Zaměřena je zejména na zkoumání teplotních gradientů. V práci je vytvořený model celého systému který je následně zkoumán ...
    • Three-Phase Busbar Current Transducer 

      Autor: Chirtsov A.; Ripka P.; Grim V.
      (IEEE, 2019)
      A true three-phase 1000 A busbar current transducer is based on six micro-fluxgate sensors. Instead of using three independent single-phase current transducers, we use the full information from each sensor. Two TI DRV425 ...