Study of current measurement method based on circular magnetic field sensing array
© 2018 by the authors. Licensee MDPI, Basel, Switzerland. Classic core-based instrument transformers are more prone to magnetic saturation. This affects the measurement accuracy of such transformers and limits their applications in measuring large direct current (DC). Moreover, protection and contro...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Published: |
MDPI Publishing
2018
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| Online Access: | http://hdl.handle.net/20.500.11937/68696 |
| _version_ | 1848761867716001792 |
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| author | Li, Z. Zhang, S. Wu, Z. Abu-Siada, Ahmed Tao, Y. |
| author_facet | Li, Z. Zhang, S. Wu, Z. Abu-Siada, Ahmed Tao, Y. |
| author_sort | Li, Z. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 2018 by the authors. Licensee MDPI, Basel, Switzerland. Classic core-based instrument transformers are more prone to magnetic saturation. This affects the measurement accuracy of such transformers and limits their applications in measuring large direct current (DC). Moreover, protection and control systems may exhibit malfunctions due to such measurement errors. This paper presents a more accurate method for current measurement based on a circular magnetic field sensing array. The proposed measurement approach utilizes multiple hall sensors that are evenly distributed on a circle. The average value of all hall sensors is regarded as the final measurement. The calculation model is established in the case of magnetic field interference of the parallel wire, and the simulation results show that the error decreases significantly when the number of hall sensors n is greater than 8. The measurement error is less than 0.06% when the wire spacing is greater than 2.5 times the radius of the sensor array. A simulation study on the off-center primary conductor is conducted, and a kind of hall sensor compensation method is adopted to improve the accuracy. The simulation and test results indicate that the measurement error of the system is less than 0.1%. |
| first_indexed | 2025-11-14T10:38:30Z |
| format | Journal Article |
| id | curtin-20.500.11937-68696 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:38:30Z |
| publishDate | 2018 |
| publisher | MDPI Publishing |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-686962021-01-05T08:07:07Z Study of current measurement method based on circular magnetic field sensing array Li, Z. Zhang, S. Wu, Z. Abu-Siada, Ahmed Tao, Y. © 2018 by the authors. Licensee MDPI, Basel, Switzerland. Classic core-based instrument transformers are more prone to magnetic saturation. This affects the measurement accuracy of such transformers and limits their applications in measuring large direct current (DC). Moreover, protection and control systems may exhibit malfunctions due to such measurement errors. This paper presents a more accurate method for current measurement based on a circular magnetic field sensing array. The proposed measurement approach utilizes multiple hall sensors that are evenly distributed on a circle. The average value of all hall sensors is regarded as the final measurement. The calculation model is established in the case of magnetic field interference of the parallel wire, and the simulation results show that the error decreases significantly when the number of hall sensors n is greater than 8. The measurement error is less than 0.06% when the wire spacing is greater than 2.5 times the radius of the sensor array. A simulation study on the off-center primary conductor is conducted, and a kind of hall sensor compensation method is adopted to improve the accuracy. The simulation and test results indicate that the measurement error of the system is less than 0.1%. 2018 Journal Article http://hdl.handle.net/20.500.11937/68696 10.3390/s18051439 http://creativecommons.org/licenses/by/4.0/ MDPI Publishing fulltext |
| spellingShingle | Li, Z. Zhang, S. Wu, Z. Abu-Siada, Ahmed Tao, Y. Study of current measurement method based on circular magnetic field sensing array |
| title | Study of current measurement method based on circular magnetic field sensing array |
| title_full | Study of current measurement method based on circular magnetic field sensing array |
| title_fullStr | Study of current measurement method based on circular magnetic field sensing array |
| title_full_unstemmed | Study of current measurement method based on circular magnetic field sensing array |
| title_short | Study of current measurement method based on circular magnetic field sensing array |
| title_sort | study of current measurement method based on circular magnetic field sensing array |
| url | http://hdl.handle.net/20.500.11937/68696 |