期刊论文

Research on bandwidth detection methods for large range hall current sensors

中文

电子测量技术

1002-7300

2023

46

24

61-67

10.19651/j.cnki.emt.2313816

2018YFE0303103:科技部ITER专项

本校为第一机构

针对检测设备的限制导致不能使用不同频率的大电流对大量程霍尔电流传感器的带宽进行测试的问题,设计一种带宽检测电路并探究大量程霍尔电流传感器的带宽与测试电流大小的关系.通过带宽检测电路将直流大电流斩波可以得到不同频率的大量程脉冲测试电流,该测试电流流经霍尔电流传感器和康铜丝阵列.根据-3 dB原则比较霍尔电流传感器输出信号幅值相对康铜丝阵列的失真程度,确定霍尔电流传感器的带宽.使用30～100 A不同大小测试电流对霍尔电流传感器的带宽进行测试,结果表明测试电流大小不同,大量程霍尔电流传感器的带宽不同,且随着测试电流的增大,带宽逐渐减小.

Aiming at the problem that the bandwidth of large-range hall current sensors cannot be tested with high currents of different frequencies due to the limitation of detection equipment,a bandwidth detection circuit is designed and the relationship between the bandwidth of large-range hall current sensors and the test current is explored.A large range pulse test current of different frequencies can be obtained by chopping the DC high current through the bandwidth detection circuit,which flows through the hall current sensor and the constantan wire...