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A Simulink implementation of the Delay-Rational Green's-Function-based Method for Multiconductor Transmission Lines
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Embedded Internet Systems Lab.ORCID iD: 0000-0003-0015-0431
University of L'Aquila .
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Embedded Internet Systems Lab.ORCID iD: 0000-0003-4160-214x
2018 (English)In: EMC Europe 2018, Piscataway, NJ: Institute of Electrical and Electronics Engineers (IEEE), 2018, p. 817-822, article id 8485071Conference paper, Published paper (Refereed)
Abstract [en]

The electromagnetic compatibility (EMC) performances of a product can seriously be affected by interconnects. Interconnects can be studied by using the multiconductor transmission lines (MTLs) theory. Mathematical models of MTLs are normally validated with the aid of well-known software, such as MATLAB or PSpice. Simulink is part of the MATLAB suite but is not frequently used, and it is often underestimated both in academia and in the university education. In this paper, we briefly review the mathematical model for MTLs called DeRaG, which is a rational model based on delay extraction. Then, we propose the corresponding Simulink implementation for a 3-conductor transmission line. The Simulink has high readability, is accurate and the simulation time is remarkably faster than the corresponding model obtained in PSpice.

Place, publisher, year, edition, pages
Piscataway, NJ: Institute of Electrical and Electronics Engineers (IEEE), 2018. p. 817-822, article id 8485071
Series
IEEE International Symposium on Electromagnetic Compatibility, ISSN 2158-110X
Keywords [en]
Transmission lines, MATLAB/Simulink, SPICE, transient simulations
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Industrial Electronics
Identifiers
URN: urn:nbn:se:ltu:diva-69302DOI: 10.1109/EMCEurope.2018.8485071ISI: 000454901100150Scopus ID: 2-s2.0-85056136450ISBN: 978-1-4673-9698-1 (electronic)OAI: oai:DiVA.org:ltu-69302DiVA, id: diva2:1239915
Conference
International Symposium and Exhibition on Electromagnetic Compatibility, Amsterdam, August 27-30, 2018
Available from: 2018-08-20 Created: 2018-08-20 Last updated: 2019-01-28Bibliographically approved
In thesis
1. Multiconductor transmission lines wideband modeling: A delay-rational Green’s-function-based method
Open this publication in new window or tab >>Multiconductor transmission lines wideband modeling: A delay-rational Green’s-function-based method
2018 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The performance of variable-frequency drives (VFDs) commonly used in energy production plants can be severely affected by electromagnetic (EM) noise in the form of conducted disturbances.

A VFD is composed of an inverter, a motor, and a connecting power cable. The insulated-gate bipolar transistor (IGBT) technology and the pulse-width modulation (PWM) technique, used in the inverter, amplified the role of the power cable, which experiences the so-called “high-frequency” or “transmission line” effects, such as reflections, crosstalk, and distortion. Therefore, a complete EM assessment of a VFD requires an accurate and computationally efficient mathematical model of the cable, which can be studied as a multiconductor transmission line (MTL). Accordingly, we developed the “delay-rational Green’s-function-based” (DeRaG) model that should overcome the main limitations of the existing methods in the literature. In the DeRaG model, the impedance (or admittance) matrix is the sum of a rational series and a so-called hyperbolic part realized by hyperbolic functions. The rational series consists of poles and residues and can be truncated to a suitable size by a delay extraction technique. The hyperbolic part retains the primary information of the high-frequency behaviors, such as attenuation and propagation delays, of a line; thus, the DeRaG model is a wideband model. The DeRaG model is independent of the terminations and sources of the line and enables a delayed state-space representation; it can also account for EM interference. Nevertheless, an EM assessment of a complex system can be performed only using a calculator and proper software. Most of the advanced models for MTLs have been adapted for SPICE-like transient solvers. However, power electronics applications are commonly simulated by using software packages such as Simulink that are optimized for system-level simulations. We thus proposed the implementation of the DeRaG model both in SPICE and in Simulink to embrace a larger group of users and applications. The Simulink implementation was notably proven to be extremely simple and easy to describe. In addition, we focused on the hyperbolic part to qualitatively assess the behavior of an MTL. Our investigation resulted in an outstanding outcome; namely, we provided the distortionless condition for MTLs, whereas the distortionless condition was previously defined only for single-conductor transmission lines as the well-known Heaviside condition. In conclusion, the DeRaG model is a wideband model for the EM analysis of generic transmission lines that is suitable for system-level simulations required in power electronics applications and offers new insights into the physics of the system.

 

Place, publisher, year, edition, pages
Luleå: Luleå University of Technology, 2018
Series
Doctoral thesis / Luleå University of Technology 1 jan 1997 → …, ISSN 1402-1544
National Category
Engineering and Technology Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Industrial Electronics
Identifiers
urn:nbn:se:ltu:diva-71021 (URN)978-91-7790-214-0 (ISBN)978-91-7790-215-7 (ISBN)
Public defence
2018-11-27, A1547, Luleå tekniska universitet, Luleå, 10:00 (English)
Opponent
Supervisors
Available from: 2018-09-28 Created: 2018-09-28 Last updated: 2018-11-21Bibliographically approved

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De Lauretis, MariaEkman, Jonas

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