摘要
针对混合型限流熔断器入口铜排的短路电流测试及小型化需求,分别构建了稳态,瞬态电流情况下矩形铜排磁场分布的仿真模型,并从原理上分析了两种不同电流下磁场分布不同的原因。利用COMSOL有限元仿真软件,寻找到稳态、瞬态电流下,幅值为10kA所对应的磁感应强度交点以确定霍尔元件安装位置,并进行实验验证。仿真与实验结果具有良好的一致性,验证了有限元模型的正确性和设计的可行性。霍尔元件输出特性仅与导体电流的大小保持线性关系,电流检测避免使用铁芯材料环绕导体,以使霍尔传感器的体积可大大减小,适用性更加广泛。研究可为直流小型混合熔断器的研发设计提供借鉴。
Aiming at the short-circuit current test and miniaturization requirements of the inlet copper bar of the hybrid current-limiting fuse,the simulation models of the magnetic field distribution of the rectangular copper bar under steady-state and transient current conditions are constructed respectively,and the theoretical analysis is carried out under two different currents.The reason is analyzed from the different magnetic field distribution.Using the COMSOL finite element simulation software,the intersection of the magnetic induction intensity corresponding to the amplitude of 10kA under steady-state and transient currents is found to determine the installation position of the Hall element,and the experimental verification is carried out.The simulation and experimental results are in good agreement,which verifies the correctness of the finite element model and the feasibility of the design.The output characteristic of the Hall element only maintains a linear relationship with the magnitude of the conductor current.The current detection avoids the use of iron core material to surround the conductor,so that the size of the Hall sensor can be greatly reduced and the applicability is more extensive.The research can provide reference for the research and design of DC small hybrid fuse.
作者
岳海波
武瑾
庄劲武
袁志方
刘路辉
YUE Haibo;WU Jin;ZHUANG Jinwu;YUAN Zhifang;LIU Luhui(College of Electrical Engineering,Naval University of Engineering,Wuhan 430033;National Key Laboratory of Science and Technology on Vessel Integrated Power System(Naval University of Engineering),Wuhan 430033)
出处
《舰船电子工程》
2023年第8期223-227,共5页
Ship Electronic Engineering
基金
国家自然科学基金项目(编号:52107136)资助。
关键词
短路电流测量
霍尔传感器
稳态
瞬态
集肤效应
short-circuit current measurement
Hall sensors
steady-state
transient
skin effect
