A Novel Broadband High Sensitivity Current Probe Design and Analysis for Conducted Emission Testing

2018 International Conference of Green Buildings and Environmental Management

土木建筑工程;生态环境科学

Miao, Sha^1 ; Wanxiu, Teng^1 ; Gang, Song^1 ; Xiaotong, Mu^2 ; Baoying, Shang^3 ; Jilei, Song^4 ; Dongxiang, Lv^5

CRRC Changchun Railway Vehicles CO, LTD, No.435 Qingyin Road, Changchun, China^1

Bei Hang University, No.37 Xueyuan Road, Haidian distrct, Beijing, China^2

Shenzhen Beihang Testing Co. LTD, No.1, Xuefu road, Shenzhen, China^3

BeiHang Engineering Technology Center (Shenzhen) CO. LTD, No.2, Yunxing road, Nanshan district, Shenzhen, China^4

Foshan Shunde Hangce Electromagnetic Compatibility Technology CO. LTD, No.12, West road, Shunde district, Foshan, China^5

关键词: Conducted emissions;    High sensitivity;    High-frequency electromagnetic fields;    Measurement equipment;    Measurement sensitivity;    Sensitivity indices;    Structure dimensions;    Transfer impedance;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/186/3/012006/pdf
DOI  :  10.1088/1755-1315/186/3/012006

来源: IOP

【 摘 要 】

Current probe is one of the most important measurement equipments in electromagnetic compatibility (EMC) for electromagnetic conducted emission testing. The measurement sensitivity of the current probe can directly affect the testing results. A novel broadband high sensitivity current probe is designed and analyzed by combining calculation method of equivalent circuit and high frequency electromagnetic field. The Fe based microcrystalline is used for the magnetic core of the novel current probe. The structure dimension is determined according to simulations and analyses. The novel current probe is compared with the commercial current probes by practical testing. The testing results show that the sensitivity indexes of the novel current probe surpass that of the commercial ones nearly 10 dB from 20 Hz to 10 kHz. Besides, the transfer impedance indexes of the novel current probe could attain the performance of commercial probes from 10 kHz to 500 MHz.