Hybrid Magnetoresistor-Planar Rogowski Current Sensing Scheme With Folded Trace Magnetic Field Concentration Technique

Wideband and isolated current measurement is required in many applications, including power electronics converters, when the switching frequency is above 1 MHz. This paper proposes a hybrid noncontact isolated current sensing scheme consisting of a magnetoresistor-based sensor and a planar Rogowski...

Full description

Saved in:
Bibliographic Details
Published in:IEEE sensors journal 2017-06, Vol.17 (11), p.3446-3452
Main Authors: Parkhideh, Babak, Nibir, Shahriar Jalal
Format: Article
Language:English
Subjects:
Bandwidth
Bandwidths
Broadband
Coils
Converters
Current measurement
Current sensing
Detection
Experimentation
magnetic field measurement
Magnetic fields
Magnetic sensors
Magnetoresistance
magnetoresistor
Resonant frequency
Rogowski coil
Switching
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Wideband and isolated current measurement is required in many applications, including power electronics converters, when the switching frequency is above 1 MHz. This paper proposes a hybrid noncontact isolated current sensing scheme consisting of a magnetoresistor-based sensor and a planar Rogowski coil with complementary characteristics. In the proposed current sensing scheme, the folded trace technique is used to improve the magnetic field homogeneity in a wide frequency range, and hence the bandwidth of the sensing scheme. This paper presents the design procedures for the proposed hybrid sensing scheme. We demonstrate through experimentation that the proposed scheme yields a detection bandwidth of dc-10 MHz for 12-A current.
ISSN:1530-437X
1558-1748
DOI:10.1109/JSEN.2017.2691262