Simulation and optimization of conductor structural parameters of free-space hall-effect current sensor

In this paper, simulation is done to optimize the conductor structural parameters of a new free space current sensor by using Ansoft Maxwell software. These parameters are conductor shape, gap between conductor and Hall-effect sensor, cross-section geometry and length of conductor pins, respectively. The optimized parameters are implemented in a new free-space current sensor with using a Hall-effect element. Experimental results show that the sensitivity of the new designed current sensor is relatively stable, the linearity can be controlled within ±0.6% and the total measuring error is less than 3.0%, which is lower than that of the integrated current sensor, for instance ACS756.