Research on TMR Current Transducer With Temperature Compensation Based on Reference Magnetic Field
TMR magnetoresistance sensors have advantages such as small size and low power consumption in the field of current measurement, but their sensitivity temperature dependence limits their application in the field of electric energy metering. A temperature compensation method based on reference magneti...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IEEE
2023-01-01
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| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10252076/ |
| _version_ | 1797634030005387264 |
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| author | Jingru Li Feng Pan Jinli Li Yilin Ji Hongtian Song Baoshuai Wang |
| author_facet | Jingru Li Feng Pan Jinli Li Yilin Ji Hongtian Song Baoshuai Wang |
| author_sort | Jingru Li |
| collection | DOAJ |
| description | TMR magnetoresistance sensors have advantages such as small size and low power consumption in the field of current measurement, but their sensitivity temperature dependence limits their application in the field of electric energy metering. A temperature compensation method based on reference magnetic field was proposed, which uses a constant current source and an iron core with an air gap to construct the reference magnetic field. The structures of the reference magnetic field channel and the measurement channel are the same, which the TMR sensors used are the same, and the signal processing circuits are the same. By analyzing the relationship between the air gap magnetic field and the primary current, a mathematical model was established between the input current and the sensor output voltage, thus providing support for the temperature compensation method of the TMR current sensor. The effectiveness of the temperature compensation method for TMR current transducer based on reference magnetic field is verified by the test data of the nonlinear characteristics and temperature characteristics. The results show that the temperature compensation method based on reference magnetic field reduces the temperature dependence of the sensor from −369ppm/°C to −49ppm/°C. The proposed temperature compensation method does not require additional temperature sensors and does not require prior acquisition of TMR temperature characteristics, making it specific and universal. |
| first_indexed | 2024-03-11T12:03:02Z |
| format | Article |
| id | doaj.art-cb71690424064144b3de32d6ea2f30ed |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-03-11T12:03:02Z |
| publishDate | 2023-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-cb71690424064144b3de32d6ea2f30ed2023-11-08T00:01:35ZengIEEEIEEE Access2169-35362023-01-011112182812183410.1109/ACCESS.2023.331573710252076Research on TMR Current Transducer With Temperature Compensation Based on Reference Magnetic FieldJingru Li0Feng Pan1Jinli Li2Yilin Ji3Hongtian Song4https://orcid.org/0009-0007-0118-5982Baoshuai Wang5Metrology Center, Guangdong Power Grid Company Ltd., Guangzhou, ChinaMetrology Center, Guangdong Power Grid Company Ltd., Guangzhou, ChinaMetrology Center, Guangdong Power Grid Company Ltd., Guangzhou, ChinaMetrology Center, Guangdong Power Grid Company Ltd., Guangzhou, ChinaCSG Electric Power Research Institute, Guangzhou, ChinaCSG Electric Power Research Institute, Guangzhou, ChinaTMR magnetoresistance sensors have advantages such as small size and low power consumption in the field of current measurement, but their sensitivity temperature dependence limits their application in the field of electric energy metering. A temperature compensation method based on reference magnetic field was proposed, which uses a constant current source and an iron core with an air gap to construct the reference magnetic field. The structures of the reference magnetic field channel and the measurement channel are the same, which the TMR sensors used are the same, and the signal processing circuits are the same. By analyzing the relationship between the air gap magnetic field and the primary current, a mathematical model was established between the input current and the sensor output voltage, thus providing support for the temperature compensation method of the TMR current sensor. The effectiveness of the temperature compensation method for TMR current transducer based on reference magnetic field is verified by the test data of the nonlinear characteristics and temperature characteristics. The results show that the temperature compensation method based on reference magnetic field reduces the temperature dependence of the sensor from −369ppm/°C to −49ppm/°C. The proposed temperature compensation method does not require additional temperature sensors and does not require prior acquisition of TMR temperature characteristics, making it specific and universal.https://ieeexplore.ieee.org/document/10252076/Iron corereference magnetic fieldsensitivity temperature dependenceTMR current transducer |
| spellingShingle | Jingru Li Feng Pan Jinli Li Yilin Ji Hongtian Song Baoshuai Wang Research on TMR Current Transducer With Temperature Compensation Based on Reference Magnetic Field IEEE Access Iron core reference magnetic field sensitivity temperature dependence TMR current transducer |
| title | Research on TMR Current Transducer With Temperature Compensation Based on Reference Magnetic Field |
| title_full | Research on TMR Current Transducer With Temperature Compensation Based on Reference Magnetic Field |
| title_fullStr | Research on TMR Current Transducer With Temperature Compensation Based on Reference Magnetic Field |
| title_full_unstemmed | Research on TMR Current Transducer With Temperature Compensation Based on Reference Magnetic Field |
| title_short | Research on TMR Current Transducer With Temperature Compensation Based on Reference Magnetic Field |
| title_sort | research on tmr current transducer with temperature compensation based on reference magnetic field |
| topic | Iron core reference magnetic field sensitivity temperature dependence TMR current transducer |
| url | https://ieeexplore.ieee.org/document/10252076/ |
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