A portable VNA-based system for grid impedance measurements

被引：0
|
作者：
Buyuk, S. [1 ]
Mariscotti, A. [2 ]
Stibernik, K. [3 ]
Sen, O. [1 ]
Wojciechowski, M. [4 ]
机构：
[1] TUBITAK UME Natl Metrol Inst, Gebze, Turkiye
[2] Univ Genoa, DITEN, Genoa, Italy
[3] SIQ Slovenian Inst Qual & Metrol, Ljubljana, Slovenia
[4] GUM Cent Off Measures, Warsaw, Poland
来源：
2024 INTERNATIONAL SYMPOSIUM AND EXHIBITION ON ELECTROMAGNETIC COMPATIBILITY, EMC EUROPE 2024 | 2024年
关键词：
electromagnetic interference; impedance measurement; network analyzers; power systems; probes;
D O I：
10.1109/EMCEurope59828.2024.10722179
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Conducted emissions are strongly dependent on the grid and EUT impedance, to measure in live conditions. A portable system based on a low-cost VNA and two internal or external current probes is presented. It was verified in the lab against various calibration standards (50 Omega, mismatched termination, 150 Omega coupling-decoupling network and 100 pF capacitor) using a Agilent E5061B as reference. Results of calibration and the effects of probes non-linearity are provided, having considered both saturation (with an external bias circuit) and signal-to-noise ratio (by injecting external noise). The maximum observed spread of impedance magnitude is 1% for matched condition (50 Omega) and 10% in mismatched conditions. Performance can always be improved by using a more expensive and bulkier VNA.
引用
收藏
页码：464 / 469
页数：6
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