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A Small, Wide-Range Three-Phase Current Sensor Using a MI Element
| Content Provider | Semantic Scholar |
|---|---|
| Author | Kudo, Takahiro Tsuji, Norihito Asada, Takafumi Sugiyama, Shunsuke Kitaide, Yujiro Takasaki, Yoshiharu |
| Copyright Year | 2005 |
| Abstract | This paper describes a three–phase electric current sensor using a magneto–impedance (MI) sensor, which provides compact size and wide–range current sensing. The MI sensor is composed of a thin–film MI element and a bias coil. The MI sensors and electric current bars are placed in u–shaped cores to prevent an unwanted magnetic field from being generated by another phase current. To realize a high shielding performance and a compact size, a double shielding structure is employed. Two kinds of alternate bias are used in the system to implement a wide measurement range of 1:600. The sensor is intermittently driven by discrete sampling to realize a low power consumption of 20 mW. The influence of temperature on the MI sensor is alleviated by supplying an optimum carrier electric current. As a result, a temperature fluctuation ratio of less than ± 1.3% at -25 to 60°C was obtained. |
| Starting Page | 997 |
| Ending Page | 1003 |
| Page Count | 7 |
| File Format | PDF HTM / HTML |
| DOI | 10.3379/jmsjmag.29.997 |
| Volume Number | 29 |
| Alternate Webpage(s) | https://www.jstage.jst.go.jp/article/jmsjmag/29/11/29_11_997/_pdf |
| Alternate Webpage(s) | https://doi.org/10.3379/jmsjmag.29.997 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
