Development of high DC-current measurement system using closed loop Hall Effect configuration

1st Siliwangi International Conference on Innovation in Research 2018

Faizal, F.^1^2 ; Hafidz, M.^1 ; Florena, F.F.^3 ; Maulana, D.W.^2 ; Abdurochman, A.^1 ; Panatarani, C.^1^2 ; Joni, I.M.^1^2

Departement of Physics, Universitas Padjadjaran, Jl. Bandung-Sumedang Km 21, Jatinangor Sumedang, West Java, Indonesia^1

Nanotechnology and Graphene Research Center, Universitas Padjadjaran, Jl. Bandung-Sumedang Km 21, Jatinangor Sumedang, West Java, Indonesia^2

Department of Physics, Faculty of Mathematics and Natural Sciences, Bandung Institute of Technology, Jl. Ganesha No 10, West Java

40132, Indonesia^3

关键词: Closed loop configuration;    Current magnitudes;    DC current measurement;    Interface software;    Measurement data;    Permanent magnetic fields;    Robust measurement;    Secondary currents;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/550/1/012013/pdf
DOI  :  10.1088/1757-899X/550/1/012013

来源: IOP

【 摘 要 】

Recently, the requirement of high-power electric sources for the vehicle industry has been increased, this trend forces the research of DC power sources and storage to be developed faster. For supporting the development, the requirement of the robust measurement system cannot be avoided. In this paper, non-contact high DC-current measurement system had been developed using Hall effect sensing. By this principle, a wide range of current magnitude spanning from -169 A to 237 A with 0.25 A resolution by design was developed. The design of the instrument was extended from the conventional closed-loop configuration system. The magnetic field obtained from secondary current was used to "purify" offset voltage and by using absolute voltage subtractor, the offset voltage can be removed. By this approach, the error due to permanent magnetic fields of concentrator can be compensated. The sensor and the conditioning signal were coupled with the digital block and the measurement data can be observed from LCD and connected to the PC by interface software.