可调节零点偏置电流的磁平衡电流传感器  

Magnetically Balanced Current Sensor With Adjustable Zero Bias Current

作　　者：杜刚 余冰冰 王威 DU Gang;YU Bing-bing;WANG Wei(Chengdu Xinxinshenfeng Electronic Technology Co.,Ltd.,Chengdu 611731)

机构地区：[1]成都新欣神风电子科技有限公司,成都611731

出　　处：《环境技术》2024年第4期170-173,179,共5页Environmental Technology

摘　　要：为解决现有传感器无法提供任意大小的偏置电流问题,设计了一种偏置电流可调的磁平衡式电流传感器。偏置电流可调的磁平衡式电流传感器,是指零点输出电流为一个可以调节的非零值的电流传感器。在磁平衡电流传感器的工作原理基础上,叠加一级偏置电流电路,其中偏置电流电路运用欧姆定律实现电流可调功能。通过对该设计进行不同偏置设定的试验验证,证明该电路方案能够实现电流传感器的零点偏置电流可调功能,同时具有较高的精度和稳定性。In order to solve the problem that the existing sensors can't provide any bias current,a magnetic balance current sensor with adjustable bias current is designed.Magnetically balanced current sensor with adjustable bias current,The zero output current is an adjustable non-zero current sensor based on the working principle of the magnetic balance current sensor.A bias current circuit is added,in which the bias current circuit uses Ohm's law to realize the current adjustable function.It is proved that the circuit can realize the zero-point bias current sensor.At the same time,it has high accuracy and stability.

关 键 词：电流传感器 磁平衡 偏置电流 

分 类 号：TM933[电气工程—电力电子与电力传动]