Non-contact current measurement method for removing eccentricity error with magnetic array sensors
A circular array of magnetic sensors is an effective method for non-contact measurement of current due to its low cost,light-weight,large linear range,wide bandwidth,and low noise.In view of large current measurement error of the existing array current sensor while measuring eccentricity,a region-hierarchical analysis method based on the eccentric position of the wire is adopted.By superimposing the output of different weights of the magnetic sensor on different eccentric positions of the current-carrying conductor,and comparing it with the output of the center position of the wire,the maximum relative error is 1.28％ and the linear error of the sensor is 1.04％, which overcomes the influence of wire eccentricity on the current measurement error,and the feasibility of the method is proved.
万方数据
维普
