Photoelectric Hybrid Current Sensor Combination of LPCT and FFI
Photoelectric Hybrid Current Sensor Combination of LPCT and FFI
复制标题
LPCT和FFI的光电混合电流传感器组合
DOI:
10.1109/lpt.2014.2359091
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发表时间:
2014-12
影响因子:
2.6
通讯作者:
Hongyan Zhao
中科院分区:
文献类型:
--
作者:
Jianxiang Tian;Yunjie Xia;Dianguo Cao;Hongyan Zhao
A new kind of photoelectric hybrid current sensor is designed. The low-power current transformer (LPCT) is used as the primary sensor for current conversion. The optical fiber Fizeau interferometer acts as the secondary sensor for noncontact microvibration detection. An electro-dynamic structure works as a bridge connecting the two sensors. Using two different ways as frequency response analysis and linear fitting method, similar sensitivity results are obtained. It is considered to be 3.5152 nm/A when the current frequency is 50 Hz. When LPCT works at the rated primary current of 450 A, the maximum measurement ratio error and phase displacement are <;0.25% and 0.066 rad, respectively.
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