Customized Test Fixture for Accurate Impedance Measurement of EMI Filtering Chokes

Jie, Huamin; Fan, Fei; Yang, Zhenning; See, Kye Yak; Simanjorang, Rejeki; Sasongko, Firman

doi:10.1109/apemc53576.2022.9888480

Cited by 8 publications

(1 citation statement)

References 9 publications

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“…Typically, an impedance analyzer (IA) or a vector network analyzer (VNA) is employed for impedance measurements [22]. This process often requires a specific adapter that serves as the interconnection between the coaxial ports of IA/VNA and the device's unique terminals [23]. However, to date, there are no market-available wideband and high-precision fixture adapters specifically designed for motor terminals.…”

Section: Introductionmentioning

confidence: 99%

Enhancing motor impedance measurements: broadening the spectrum from low to high frequencies

Jie,

See,

Chang

et al. 2024

Meas. Sci. Technol.

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Three-phase induction motors serve as critical parts in various industrial applications, lauded for their high energy efficiency and notable power density. Obtaining their broadband impedance information is paramount for analyzing conducted emissions, evaluating overvoltage ringing, and assessing motor health status. Nonetheless, conventional methods for motor impedance measurements typically rely on Kelvin clip leads or extension cables, which are effective only in a relatively low-frequency region (i.e., below 1 MHz). This paper presents an improved approach to extend the measurable spectrum from low to high frequencies, up to 120 MHz. The proposed method develops a series of fixture adapters to enable seamless interconnection between the terminals of an induction motor and the coaxial ports of an impedance analyzer. The parasitics introduced by these adapters are identified using boundary-element analysis, and their impacts are minimized based on the de-embedding concept. Experimental results affirm the accuracy and effectiveness of the proposed method for four types of motor impedances (i.e., single-phase, phase-to-ground, common-mode, and differential-mode) across a broad frequency range from 100 Hz to 120 MHz. Moreover, the inaccuracy of motor impedance measurements at high frequencies (i.e., above 1 MHz) using conventional methods, including Kelvin clip leads and extension cables, is also demonstrated.

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Section: Introductionmentioning

confidence: 99%

Enhancing motor impedance measurements: broadening the spectrum from low to high frequencies

Jie,

See,

Chang

et al. 2024

Meas. Sci. Technol.

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A review of intentional electromagnetic interference in power electronics: Conducted and radiated susceptibility

Jie,

Zhao,

Zeng

et al. 2024

IET Power Electronics

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With the advancements in Industry 4.0 and the global demand for sustainable energy, power electronics devices are emerging as pivotal components for modern industrial, transportation, and energy delivery. Ensuring the security of these devices is of paramount importance for safeguarding the reliable operation of critical systems against any threats. In recent years, the issue of intentional electromagnetic interference (IEMI) attack and their related countermeasures have gained widespread attention in both military and civilian power electronics sectors. Here, a review of IEMI in power electronics is provided. Starting from the electromagnetic compatibility standards, the test setups for evaluating the device immunity are introduced. Due to different attack modes and propagation paths, IEMI illuminations are typically categorized into conduction and radiation, where their susceptibility studies, applications, and defence strategies are discussed, respectively. Finally, the existing challenges, ongoing trends, and future topics in this field are discussed.

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Impedance Measurement of Three-Phase Common-Mode Chokes in Power Electronic Applications

Jie

Fan

Zhao

et al. 2023

2023 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)

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Customized Test Fixture for Accurate Impedance Measurement of EMI Filtering Chokes

Cited by 8 publications

References 9 publications

Enhancing motor impedance measurements: broadening the spectrum from low to high frequencies

Enhancing motor impedance measurements: broadening the spectrum from low to high frequencies

A review of intentional electromagnetic interference in power electronics: Conducted and radiated susceptibility

Impedance Measurement of Three-Phase Common-Mode Chokes in Power Electronic Applications

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