基于等效铁芯电感的磁通门HSPICE分析模型

提出了一种基于随电流变化的铁芯电感的磁通门HSPICE（High Simulation Program with IC Emphasis）模型，该磁通门模型铁芯的磁滞回线使用反正切函数来描述，其激励与测量线圈等效为一种随电流变化的电感电路模型。本文给出了全电路元件的磁通门模型的参数及提取方法，此模型可以在任意形状的电压激励波形下仿真，与已有的磁通门模型相比，具有仿真精度高、需要参数少且计算容易和可以方便进行输出信号处理的特点。实验和仿真结果对比表明，双铁芯磁通门HSPICE模型仿真的输入电流和输出电压的幅值分别为146 mA和1.03 V，与实际测试的146.6 mA和1.177 V相比，输入电流有0.6 mA的误差，输出电压有0.147 V的误差。

HSPICE Analysis Model of Fluxgate Based on Equivalent Core Inductance

An HSPICE(High Simulation Program with IC Emphasis)model of the fluxgate based on core inductance with the change of current is proposed. The hysteresis loop of fluxgate core was described with the arctangent func?tion for the proposed fluxgate model,the excitation and measurement coils of the fl uxgate were equivalent to a cir?cuit model that contains a kind of non-linear time-varying inductance. The parameters and the extraction method of the whole circuit element of the fluxgate model were provided. The model can be simulated under arbitrary wave?form of the voltage excitation. The proposed model owns the characteristics of high simulation precision ,few parame?ters,easily calculated parameters and conveniently carried out output signal compared with the previous model. The simulated results showed that the amplitude of input current and output voltage of dual core fluxgate HSPICE simu?lation model are 146 mA and 1.03 V,respectively. The input current and the output voltage have errors of 0.6 mA and 0.147 V respectively compared with test results of 146.6 mA and 1.177 V.