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

页码：464 / 469

页数：6

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