Surface transfer impedance measurement: a comparison between current probe and pull-on braid methods for coaxial cables

Morriello, A.; Benson, T.M.; Duffy, Alistair; Cheng, Chun-kwong

doi:10.1109/15.659522

Cited by 18 publications

(10 citation statements)

References 5 publications

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“…6 and 7, respectively) given by Tyni (1976) and Demoulin et al (1981). It has been found in previous investigations (Mushtaq et. al., 2013) that comparatively Demoulin model (Demoulin et al, 1981;Kone, 2010, 2011), as per Eqs.…”

Section: Transfer Impedance Simulation Methodssupporting

confidence: 81%

“…This method can be used to measure Z T for braided shield cables and semi-rigid cables but application to large and nonsymmetrical automotive cable connector systems is difficult as Green's functions for each DUT needs to be defined in order to measure Z T . To measure Z T without the GTEM cell or Triaxial Tube for both HV cable and HV cable connector systems the Ground Plate Method, (GPM) was proposed (Mushtaq et al, 2013). For validation, improved GPM has been compared with Triaxial Method and Line Injection Method.…”

Section: Transfer Impedance Measurement Methodsmentioning

confidence: 99%

“…In order to get a higher frequency range in the measurements, DUT with shorter length may be used, here l shield = 50 cm has been used for all measurements. Whereas, for better sensitivity at lower frequency (as Z T = R DC shield ), longer cables may be used to limit the dominance of the connectors (Morriello et al, 1998).…”

Section: Ground Plate Methods (Gpm)mentioning

confidence: 99%

“…Line Injection Method (LIM) is easier to apply, but Z T measurement results are sometimes sensitive to different positions of the injection line, especially in case of non-symmetrical cables and connectors. To overcome some of these limitations in the measurements, Ground Plate Method (GPM) was developed to measure Z T of high voltage cables and cableconnector systems (Mushtaq et al, 2013). Although, it had the flexibility to measure various types of shielded cables and cable-connector systems with different sizes and lengths using same test-setup, still some points had to be improved e.g.…”

Section: Introductionmentioning

confidence: 99%

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Transfer impedance simulation and measurement methods to analyse shielding behaviour of HV cables used in Electric-Vehicles and Hybrid-Electric-Vehicles

Mushtaq

Frei

2016

Adv. Radio Sci.

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Abstract. In the power drive system of the Electric Vehicles (EVs) and Hybrid Electric Vehicles (HEVs), High Voltage (HV) cables play a major role in evaluating the EMI of the whole system. Transfer impedance (ZT) is the most commonly used performance parameter for the HV cable. To analyse and design HV cables and connectors with better shielding effectiveness (SE), appropriate measurement and simulation methods are required. In this paper, Ground Plate Method (GPM) with improvements has been proposed to measure ZT. Use of low-frequency ferrites to avoid ground-loop effects has also been investigated. Additionally, a combination of analytical model with a circuit model has been implemented to simulate limitations (frequency response) of the test setup. Also parametrical studies using the analytical model have been performed to analyse the shielding behaviour of HV cables.

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Section: Transfer Impedance Simulation Methodssupporting

confidence: 81%

Section: Transfer Impedance Measurement Methodsmentioning

confidence: 99%

Section: Ground Plate Methods (Gpm)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Transfer impedance simulation and measurement methods to analyse shielding behaviour of HV cables used in Electric-Vehicles and Hybrid-Electric-Vehicles

Mushtaq

Frei

2016

Adv. Radio Sci.

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“…inner conductor, cable shield and outer tube) is widely used to measure the complex transfer impedance and admittance of shielded cable [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

A simple method for measuring complex transfer impedance and admittance of shielded cable in substations

Cui

2006

2006 17th International Zurich Symposium on Electromagnetic Compatibility

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In substations, shielded cables are widely used to reduce transient electromagnetic interference to the relay and control equipments due to the switch operation. Both the transfer impedance and transfer admittance are quantities for expressing numerically the mechanism that allows the passage of electromagnetic energy across the cable shield. Theoretical models to compute both the quantities often rely on simplifying assumptions. This, together with the fact that the transfer impedance and admittance can vary considerably between cable samples of the same type, means that measurements become necessary. In this paper, based on the transmission line theory we present a simple method to measure the transfer impedance and admittance of shielded cable in magnitude as well as in phase over the frequency range (0.1MHz-10MHz) which covers the main interference frequencies in power system. To illustrate this method a coaxial cable with a braided shield has been measured and compared with the existing method. As an application, the proposed method is used to predict the induced voltage and current on the shielded cable due to the switch operation in substation. Index Terms-Electromagnetic interference in substations,measurement, transfer impedance and admittance, shielded cable.

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A simple but effective way for cable shielding measurement

Лео

Cerri

Primiani

et al. 1999

IEEE Trans. Electromagn. Compat.

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Surface transfer impedance measurement: a comparison between current probe and pull-on braid methods for coaxial cables

Cited by 18 publications

References 5 publications

Transfer impedance simulation and measurement methods to analyse shielding behaviour of HV cables used in Electric-Vehicles and Hybrid-Electric-Vehicles

Transfer impedance simulation and measurement methods to analyse shielding behaviour of HV cables used in Electric-Vehicles and Hybrid-Electric-Vehicles

A simple method for measuring complex transfer impedance and admittance of shielded cable in substations

A simple but effective way for cable shielding measurement

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