• Patent Title: Magnetic field-based current sensor for frequency-compensated measurement of alternating currents
  • Application No.: US17632488
    Application Date: 2020-08-07
  • Publication No.: US11493537B2
    Publication Date: 2022-11-08
  • Inventor: Claudia GlenskeMatthias Brusius
  • Applicant: Sensitec GmbH
  • Applicant Address: DE Wetzlar
  • Assignee: Sensitec GmbH
  • Current Assignee: Sensitec GmbH
  • Current Assignee Address: DE Wetzlar
  • Agency: Dinsmore & Shohl LLP
  • Priority: DE102019121458.0 20190808,DE102019124391.2 20190911
  • International Application: PCT/EP2020/072293 WO 20200807
  • International Announcement: WO2021/023874 WO 20210211
  • Main IPC: G01R15/14
  • IPC: G01R15/14 G01R19/00
Magnetic field-based current sensor for frequency-compensated measurement of alternating currents
Abstract:
A current sensor for magnetic field-based current determination of an alternating current through a current conductor is based on a magnetic field-sensitive sensor element. The sensor element is arranged spatially adjacent the current conductor to detect a magnetic field brought about by the alternating current I in the current conductor. It is proposed that at least one conductive compensation element be arranged separately from the current flow through the current conductor and spatially adjacent the sensor element and the current conductor to compensate frequency-dependent distortions of the magnetic field by means of an induction-generatable compensation magnetic field.
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