Non-Contact Current Measurement for Three-Phase Rectangular Busbars Using TMR Sensors
Huafeng Su,
Haojun Li,
Weihao Liang
et al.
Abstract:This paper proposes a non-contact current measurement method for three-phase rectangular busbars based on TMR (tunneling magneto-resistance) sensors, due to their advantages of large dynamic range, wide bandwidth, light weight, and easy installation. A non-contact current sensor composed of only three TMR sensors is developed and the TMR sensors are respectively placed at a location with a certain distance from the surface of each rectangular busbar to measure the magnetic fields generated by the busbar curren… Show more
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