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July 14, 2026IEEJ Transactions on Electrical and Electronic Engineering0 citations

Design and Validation of a Hybrid TMR Current Sensor for Wide-Range Measurements

Design and Experimental Validation of a Hybrid‐Structured TMR Current Sensor for Wide‐Range and Broadband Measurements

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Authors

RLR M LiuZYZ L YangYDYinglong Diao

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Overview

Randomized trial confirms that a hybrid TMR current sensor measures currents accurately in complex environments, indicating its reliability for modern power systems.

Key Points

  • The aim is to design and validate a hybrid tunnel magnetoresistance (TMR) current sensor for precise measurements in power systems.
  • Designed a hybrid TMR current sensor combining a double-air-gap closed-loop core and a symmetrical ring-array sensing unit.
  • Optimized structural parameters and a double-layer shielding structure through simulation.
  • Fabricated a prototype sensor and carried out experimental validation.
  • Sensor accurately measures DC and power-frequency currents up to 3000 A with an error margin of ±0.2%.
  • Effectively measures harmonic currents up to 500 A within a frequency range of 2.5 kHz.
  • Demonstrates excellent stability and accuracy across the entire measurement range.
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Cite This Study

Liu et al. (2026) studied this question.

synapsesocial.com/papers/6a55d11a5aafca87247f82f4https://doi.org/10.1002/tee.70357
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  4. 4Insulator-Integrated Voltage-Current Sensor Based on Electric Field Coupling and Tunneling Magnetoresistance Technology2025
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