Modeling and Measurement of a Self-Oscillating Fluxgate Current Sensor for AC and DC Application
This paper studies fluxgate current sensors used for DC to high - frequency current measurement in various industrial fields. Traditional fluxgate technologies have drawbacks in circuit complexity and cost, while the self-oscillating fluxgate technology has model - related issues. An analytical mode...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IEEE
2025-01-01
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| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/11005562/ |
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| Summary: | This paper studies fluxgate current sensors used for DC to high - frequency current measurement in various industrial fields. Traditional fluxgate technologies have drawbacks in circuit complexity and cost, while the self-oscillating fluxgate technology has model - related issues. An analytical model for the open-loop self-oscillating fluxgate circuit is developed. Key parameters affecting circuit performance are identified, and a trade-off between sensitivity and linear range is found. A three-core four-winding self-oscillating fluxgate sensor is proposed. Experimental results show that DC and power - frequency AC accuracy better than ±0.1%, and high -frequency AC accuracy better than ±1% within 20kHz. This research provides useful insights for self-oscillating fluxgate current sensor design and optimization. |
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| ISSN: | 2169-3536 |