圆形阵列式霍尔电流传感器抗磁干扰算法研究  

Research on anti-magnetic interference algorithm of Hall current sensor with cir-cular array

作　　者：权硕 唐玥 褚子扬 沈悦[1] Quan Shuo;Tang Yue;Chu Ziyang;Shen Yue(School of Automation,Nanjing University of Information Science and Technology,Nanjing 210044,China;School of Internet of Things Engineering,Wuxi University,Wuxi 214105,China)

机构地区：[1]南京信息工程大学自动化学院,江苏南京210044 [2]无锡学院物联网工程学院,江苏无锡214105

出　　处：《电子技术应用》2024年第11期59-65,共7页Application of Electronic Technique

摘　　要：阵列式霍尔电流传感器是电力电子领域中的一个研究热点,特别是在直流电测量方面,它具有线性度高、动态范围大、体积小、功耗低等优点,是对铁磁磁芯的电流传感器的改进。然而,由于没有铁芯聚磁,在汽车电子、配电系统等场所内,导体排布密集,外部磁场很容易进入磁传感器,从而影响测量精度。因此,提出了一种抗磁干扰算法来解决这一问题,采用构造超越方程的方法,不仅可以计算被测电流,还可以计算任意位置的干扰电流,并通过数值模拟、有限元分析和室内实验对该算法进行验证。实验结果表明,在受到强干扰电流的影响下,误差在3.5%以内,验证了构造的圆形传感器阵列及抗磁干扰算法的有效性。Hall array current sensor is a research hotspot in the field of power electronics,especially in the measurement of di‐rect current.It has the advantages of high linearity,large dynamic range,small size and low power consumption,which is an improvement of current sensor with ferromagnetic core.However,due to the absence of core poly-magnetic,in automotive elec‐tronics,distribution systems and other places,the conductors are densely arranged,and the external magnetic field is easy to en‐ter the magnetic sensor,thus affecting the measurement accuracy.Therefore,this paper proposes an antimagnetic interference al‐gorithm to solve this problem,using the method of constructing transcendental equations,which can calculate not only the mea‐sured current,but also the interference current at any position.The method is verified by numerical simulation,finite element analysis and laboratory experiments.The experimental results show that the error is less than 3.5%under the influence of strong interference current,which verifies the effectiveness of the circular sensor array and anti-magnetic interference algorithm.

关 键 词：圆形阵列 霍尔电流传感器 电流测量 抗磁干扰算法 

分 类 号：TM933.12[电气工程—电力电子与电力传动]