Frequency domain simulation of lossy multiconductor transmission lines

Mejdoub, Youssef; Rouijaa, Hicham; Ghammaz, Abdelilah

doi:10.1109/icm.2009.5418620

Cited by 3 publications

(6 citation statements)

References 4 publications

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“…As in the case of conducted mode [4,11,17], the modal electrical variables V m and I m of the MTL are related to each other by: With E 0m and E lm are the voltage generators that model the plane wave coupling with the transmission line to the input and to the output line (Fig. 4):…”

Section: B) Mtl Lossless Modeling Submitted To a Plane Wavementioning

confidence: 99%

“…As in the case of conducted mode [4, 11, 17], the modal electrical variables V m and I m of the MTL are related to each other by: …”

Section: Mtl Lossless Modeling Submitted To a Plane Wavementioning

confidence: 99%

“…Traditional models of transmission lines represent phenomena related to the EM compatibility mode channel (near and far-crosstalk, etc.) [1][2][3][4]; by contrast, they do not take into account the phenomena related to the immunity radiated by an external disturbance wave (radiated mode).The coupling of a plane EM wave to MTL has been investigated by several authors in the time domain as well as in the frequency domain [5][6][7][8]. In [8], Paul presents three methods (spice model, time domain-to-frequency domain transformation, and finite difference time domain method) to solve the problem of an MTL excited by an incident EM field and to predict the voltage and current in the time domain or in the frequency domain.…”

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confidence: 99%

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Variation effect of plane-wave incidence on multiconductor transmission lines

Mejdoub

Rouijaa

Ghammaz

2015

Int. J. Microw. Wireless Technol.

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This paper addresses the study of the variation effects of incident plane wave on a multiconductor transmission line (MTL), using a coupling circuit model of MTL line with plane wave based on the method of characteristics (Branin method). This model is valid in the time and frequency domains. It has also an advantage of not presupposing the conditions of the charges applied to its ends, which allows it to be easily inserted in circuit simulators, such as SPICE, SABER, and ESACAP. We confirm the validity of this model by comparing our simulation results under ESACAP with other results, and we discuss the variation effects of the incident plane wave on an MTL line.When multiconductor transmission line (MTL) is subjected to the incident wave interference, parasite voltages manifest at its end. This field/line coupling is represented by sources of voltages and currents forced and distributed along the line. Such sources are derived from components of the electromagnetic (EM) field of the incident wave. The latter are determined in the absence of the line. Traditional models of transmission lines represent phenomena related to the EM compatibility mode channel (near and far-crosstalk, etc.) [1][2][3][4]; by contrast, they do not take into account the phenomena related to the immunity radiated by an external disturbance wave (radiated mode).The coupling of a plane EM wave to MTL has been investigated by several authors in the time domain as well as in the frequency domain [5][6][7][8]. In [8], Paul presents three methods (spice model, time domain-to-frequency domain transformation, and finite difference time domain method) to solve the problem of an MTL excited by an incident EM field and to predict the voltage and current in the time domain or in the frequency domain.For more than 40 years Bergeron's model [9] has provided a widely accepted solution for transmission line modeling, It is used to study the ideal or coupled transmission lines, connected to linear or nonlinear loads [5,6,10]. The graphical method of Bergeron provides voltage and current levels at the ends of a transmission line for each new signal reflection at the end of the line.But in the last 40 years electrical systems have changed greatly. The aperture of the markets and the introduction of renewable energy have led systems to operate at the limit of safety. The major advantage of the graphical method is the ability to account for nonlinear loads. However, the major drawback of this method is that practically outside the ideal line and lossless lines coupled, the analysis is very complex and graphics obtained are very difficult to exploit.However, there exist equivalent models of fields/lines coupling, which are only valid in the frequency domain; namely Taylor's model [11] whose unknowns of the system formed by the two telegrapher's equations are the total voltage and current V(z) and I(z), the Agrawal model [12] whose unknowns of the telegrapher's equations are the diffracted voltage V dif (z) and the total current I(z), and the Rachidi model [13]...

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Section: B) Mtl Lossless Modeling Submitted To a Plane Wavementioning

confidence: 99%

“…As in the case of conducted mode [4, 11, 17], the modal electrical variables V m and I m of the MTL are related to each other by: …”

Section: Mtl Lossless Modeling Submitted To a Plane Wavementioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Variation effect of plane-wave incidence on multiconductor transmission lines

Mejdoub

Rouijaa

Ghammaz

2015

Int. J. Microw. Wireless Technol.

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“…Furthermore, it is very difficult to model MTL with linear parameters based on the frequency. The modal method [1] that allows to represent MTLs, with the help of the BRANIN model [3–5], is easy to be implemented in circuit simulators, but it does not permits to be tackled as lines without losses.…”

Section: Introductionmentioning

confidence: 99%

Optimization circuit model of a multiconductor transmission line

Mejdoub

Rouijaa

Ghammaz

2014

Int. J. Microw. Wireless Technol.

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This paper presents an optimization circuit model of multiconductor transmission lines in the time domain. Several methods allow calculation of the currents and the tensions distributed on the uniform transmission line. Most of these methods are limited to lines with constant losses, and only for linear loads. The macro-model we propose, using Pade approximant, employs more variables and allows it to reduce the necessary cells' number in modelization than the traditional cells cascade method. This macro-model, using the Modified Nodal Analysis method (MNA), is suitable for an inclusion in circuit simulator, such as Esacap, Spice, and Saber. The MNA method offers an efficient means to discretize transmission lines on real and complex cells compared to the conventional lumped discretization. In addition, the model can directly handle frequency-dependent line parameters in the time domain. An example, with experimental measures taken from literature, is presented to validate the model we propose, and show its importance. It is necessary for assuring the results validity obtained from Pade macro-model to study its stability and passivity.

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Modeling and Simulation of Coupled Power Transmission Line: A Systematic Approach

Living

Nnamchi

Mundu

et al. 2023

Preprint

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Transmission models are dominated by lumped models, which describe the time dependence of transmission potentials (temperature, current and voltage). The space counterpart is not incorporated into the lumped model. To fill this gap, the present work proposes a distributed or coupled system of thermal and power equations, which depend on both space and time. The coupled system of equations were developed on the balance of thermal and power fluxes around a control volume representing the transmission lines. The Finite Difference Method is pivoted on the Crank Nicolson technique is used to solve the coupled system of equations. Transmission percentage losses ranged from 0.03 to 0.06%, which is consistent with the 5% recommended by the American Transmission Company. In addition, the simulated model results corresponded to field data obtained from the Uganda Electricity Transmission Company Limited (UETCL) on the Bujjagali - Kawanda transmission line. The coupled model system is useful for the simulation and estimation of the power losses in transmission lines respectively and could be implemented in other transmission lines.

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Frequency domain simulation of lossy multiconductor transmission lines

Cited by 3 publications

References 4 publications

Variation effect of plane-wave incidence on multiconductor transmission lines

Variation effect of plane-wave incidence on multiconductor transmission lines

Optimization circuit model of a multiconductor transmission line

Modeling and Simulation of Coupled Power Transmission Line: A Systematic Approach

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