Research on simulation modeling of closed-loop double core fluxgate sensor

Based on the research of current sensors with more accurate measurement accuracy, fluxgate sensor has become the first choice for high-precision current sensor design because of its simple structure, high sensitivity, low cost and power consumption, and large dynamic measurement range. In this paper, a closed-loop feedback structure of a double-core self-excited fluxgate zero-flux current sensor is proposed, and its working principle is analyzed. Finally, the corresponding simulation model is designed in Ansys, which proves the feasibility of this new sensor structure and compels the missing content of fluxgate sensor simulation design.