Jean-Philippe Parmantier

The French Aerospace Lab ONERA | ONERA · DEMR - Department of Electromagnetism and Radar

This paper presents a transmission-line model of a multiple-shields multiconductor cable. This unified model includes at the same time the propagation and cross-coupling characteristics of the electrical wires and of the cable-shields. It also includes the electromagnetic characteristics of the shields (in terms of transfer impedance and transfer a...

Citation: Morio, J.; Junqua, I.; Bertuol, S.; Parmantier, J.-P. Optimisation of segregation distances between electric cable-bundles bundles embedded in a structure. Appl. Sci. 2021, 1, 0. https://doi.org/ Received: Accepted: Published: Publisher's Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional aff...

This article deals with circuit modeling of power systems and more particularly of DC–AC converters used for controlling electric motors. The objective of the model is to be able to assess conducted emission currents at both inputs and outputs for fixed operating power in order to apply appropriate mitigation design rules, such as filtering. First,...

This article deals with modelling of EM-coupling on cable-bundles installed in 3D structures. It introduces a modified-Field-to-Transmission-Line model for which the specificity is to account for the reciprocal interaction between EM-fields and induced currents by considering equivalent total field sources. The first part of the paper is devoted to...

Due to the large amount of electrical equipment aboard modern aircraft, several EMC problems appear which can be tackled by filtering disturbances at the equipment inputs and shielding cable links (braiding, covering, over-braiding). Among the others, the segregation between interfering cables or bundles of cables becomes crucial to ensure that cou...

Due to the large amount of electrical equipment aboard modern aircraft, several EMC problems appear which can be tackled by filtering disturbances at the equipment inputs and shielding cable links (braiding, covering, over-braiding). Among the others, the segregation between interfering cables or bundles of cables becomes crucial to ensure that cou...

Modern aircraft hosts a large number of electric systems. Due to the transition to a More Electrical Aircraft, future platforms will use even more electric systems. This increases the complexity of the EWIS design from an EMC point of view. When possible, segregation between potentially interfering cables or bundles is a convenient solution to avoi...

Segregation rules are one of the three solutions to overcome EMC problems together with filtering of disturbances at the equipment inputs and shielding of cable links (braiding, covering, over-braiding, etc.). These rules enable mass reduction in the selection of cables and optimal route definition in which compatible cables (having similar levels...

This paper proposes a time-domain hybrid method for coupling Multiconductor-Transmission-Line Network equations and a Finite Element Method to evaluate the electromagnetic response of the electric wires of a cable-bundle located inside a 3 dimensional structure. The method is applied and demonstrated over a box structure made of several volumes con...

Ce document présente l’application d’un scénario de simulation coopérative de type couplage champ-câble reposant sur le formalisme d’Agrawal. Il présente l’ensemble des outils utilisés ainsi que la plateforme informatique permettant de jouer ce scénario qui a été validé sur un caisson composite carbone étudié dans le cadre du projet H2020 EPICEA. C...

Transport : sécurité électrique des systèmes sur une large bande (jusqu’à qques GHz). Maitrise des couplages électromagnétiques, distribution des courants, montée en potentiel. Avion : complexité de la certification foudre (essentiellement par des bancs de test et des mesures – Norme DO160-22,23) Champs forts (HIRF) : Prévoir les effets des multip...

Ce document décrit un process permettant de valider une installation de harnais dans un aéronef pour la CEM d’un point de vue diaphonie inter et intra harnais. Un outil numérique a été développé et validé sur deux cas tests. Le premier concerne 2 harnais avec 3 câbles et le second concerne 15 harnais avec plus de 1400 liaisons. Ce travail permet de...

This paper focuses on experimental measurement of power and signal transfer of wireless communication in reverberating cavities. The experiment is based on the evaluation of a transfer function between two antennas placed inside and outside a confined reverberating environment made of several metallic cavities. Inside these cavities, a WIFI communi...

In this paper, the possibility of extending the validity range of the transmission line theory in evaluating differential mode signals along two-wire lines above a ground plane is discussed through analysis and simulation. It is shown that, when the above-ground height of the two wires is larger than about twice their separating distance, the calcu...

This paper addresses the issue of transfer function measurements inside a structure in High Intensity Radiated Fields environment (HIRF).̅ In this context, a simple reference test object was designed and used as a set up verification device to be tested before HIRF measurement campaigns on aircraft. In order to obtain a reference measured transfer...

In this paper we propose a simple reference test object which is to be used as a set up verification device to be tested before High Intensity Radiated Field (HIRF) measurement campaigns on aircraft. This reference object has been designed to take into account both EM and mechanical requirements. It therefore ensures a good level of sensitivity and...

This paper describes the approach developed in order to model the electromagnetic response of a cable bundle, part of the electrical wiring interconnection system of a real aircraft, submitted to an external electromagnetic excitation. The aim of this study is to highlight the main challenges in the synthetic modeling and validation of a fully real...

This paper describes a methodology for modeling of EM coupling on an aircraft Electrical Wiring Interconnection System (EWIS). The challenge is to be able to generate an operative model taking into account the large number of cables and to maintain a reasonable computation time for the evaluation of the distribution of currents at the interface of...

This article describes the approach developed to model the topology of a complex harness. The modeling is based on the multi-conductor transmission line network theory. The topological model of the complex harness was validated using S-parameter simulations compared with measurements. The low-frequency results demonstrate the capability to correctl...

Full-wave EM simulation techniques such as finite-difference time domain (FDTD) are generally used for the calculation of lightning-induced current redistribution on complex 3-D geometries. For slow lightning waveforms, such techniques are not compatible with sensitivity analysis due to heavy preprocessing and calculation constraints. As an alterna...

Computer simulations provide invaluable information in HIRF (High Intensity Radiated Field) assessment of air vehicles. In this paper, we use a numerical model of a fictive metallic aircraft provided by EVEKTOR, to show a cross comparison of results found by some of the full-wave solvers developed by partners participating in the HIRF-SE project of...

The infrared thermography method allows visualization and measurement of microwave electromagnetic fields. Compared to local sensor, thermography uses special films of large dimensions, slightly heated by the EM field and therefore reveals the field frame on a 2D plane. Some recent advances of this method are presented, in particular on the film te...

HIRF SE (High Intensity Radiated Fields Synthetic Environment) is a computational tool for the simulation and analysis of electromagnetic field interaction with aircraft and rotorcraft in HIRF radio frequency range (10 kHz-40 GHz). The tool allows the simulation of air vehicle interaction with both far-field and near-field sources having any polari...

This paper presents a comprehensive application of the Field-to-TL approach implemented through a computer framework designed to facilitate data exchange among different computational tools. The framework is used also to compare results from different codes, specifically MDD (Multilevel Domain Differentiate) and CRIPTE, thus providing a validation...

This paper describes a simplification approach based on equivalent cable-bundle models for calculating conducted back-door disturbances at vehicle level. The challenge is to be able to generate a model taking into account a huge number of wires organized in functional bundles and to maintain a reasonable computation time for prediction of the distr...

This paper describes a specific methodology for modeling coupling on an aircraft Electrical Wiring Interconnection System (EWIS). The challenge is to be able to generate a model taking into account the required large number of cables, to organize the model with respect to the functional bundles and to maintain a reasonable computation time for the...

This paper describes the approach developed in the HIRF-SE EU FP7 project in order to model the topology of a complex aeronautic harness, provided by Piaggio Aero Industries. This approach is based on the CRIPTE modeling software (for Multiconductor Transmission Line Network analysis). To validate the correctness of the model of the topology of the...

This paper proposes an original numerical strategy in order to assess high frequency coupling in large systems, typically for HIRF applications, in a frequency range in which classical full waves numerical schemes such as FDTD or MoM become tedious and sometimes inappropriate to use. This strategy is based on a logical topological decomposition of...

This paper describes the procedure put to the fore in the EC's FP7 HIRF-SE project for carrying out HIRF simulations at aircraft level. The solution proposed is based on the use of MTLN models cable links under test and a 3D full wave solver including thin wire models in order to take into account coupling with the whole structure and the rest of t...

This article describes an approach developed in the HIRF-SE EU FP7 project in order to model the conducted disturbances at the equipment interface due to Back-Door constraints. This approach is based on the “association” of two modeling tools: CRIPTE for Multi conductor Transmission Line Network resolution, and IMEA for equipment input impedance mo...

This paper proposes a semianalytic solution to the problem of high frequency coupling on a wire running in electrically large enclosures. This model is basically derived from the transmission-line (TL) theory in which the electromagnetic (EM) environment, represented as a random plane-wave spectrum, is characterized by its statistical parameters. T...

This article presents the interest of numerical simulation as a helpful complement for the electromagnetic analysis of complex and large systems, particularly at the definition phase of a project. It deals with the optimisation of the lightning protection system of the VEGA launching pad, located in Kourou, French Guyana. After a preliminary step b...

This paper presents an extension of the so-called ldquoequivalent cable bundle methodrdquo for the computation over a large frequency range of the electromagnetic radiation of complex cable bundles. The purpose of the method is to reduce the complexity of the problem by grouping together the conductors according to their terminal load configuration...

This paper proposes a theoretical model of high frequency coupling on cables running in an electrically large enclosure. This model is basically derived from the transmission line theory in which a statistical representation of the incident electromagnetic environment is added. Numerical examples put to the fore the contribution of each electrical...

This paper describes a simplification technique in order to model a complex cable bundle made of a large amount of wires. The basic principle consists in the description of the topology of the cable bundle in terms of point-to-point cable links and to model those cable-links as equivalent wires in a multiconductor transmission line network model. T...

This article deals with the extension of the so-called “equivalent cable-bundle method” to assess the electromagnetic emission of a cable-bundle. As in the immunity case, the purpose of the method is to reduce the complexity of a reference cable-bundle by creating a “reduced cable-bundle” composed of a limited number of “equivalent conductors”. The...

This paper presents some discussions concerning the application of the "Equivalent Cable Bundle Method" on real automotive cable-networks in the high frequency domain. The principle of this modelling method, dedicated for helping system EM immunity assessment, is to reduce the complexity of point-to-point cable-links by grouping together the conduc...

In this paper, we propose a complementary approach to full wave 3D numerical methods in order to evaluate external EM constraints on systems which can be assimilated to an assembly of cylinders. Here, we model the system under test as transmission line networks. The parameters of these transmission lines are adjusted in order to take into account t...

Session A1 : Modélisation des chambres réverbérantes à brassage de modes.

This paper presents the fundamentals of the so-called ldquoEquivalent Cable Bundle Methodrdquo for the calculation over a large frequency range of common-mode currents induced on cable bundles by an electromagnetic (EM) perturbation. In particular, the method aims at overcoming the limitation of the multiconductor transmission line theory (MTLN), w...

This paper deals with the application of the Power Balance approach to a generic object, the GENEC, to assess high frequency coupling mechanisms. This method has been validated by measurements performed in a reverberation chamber. Finally, it will be shown how this method, once included in a global strategy, can be complementary to “Maxwell Codes”...

This paper deals with the experimental validations performed on a large frequency range (100 MHz – 3 GHz) of a method called “equivalent cable bundle method”. This method creates a “reduced” cable bundle containing a limited number of conductors - each of them called “equivalent conductor” - from a multiconductor cable bundle. The main purpose of t...

High power radio-frequency external pulse effects on large electronic systems are investigated through electromagnetic topology (EMT) based simulation techniques. For simulations, the external-internal interaction mechanisms are separated into independent processes such as external interactions, energy penetration and subsequent excitation of the e...

The paper presents the main principles of the Electromagnetic Topology theory and the way of adapting them in order to make possible efficient analysis of EM-Coupling problems. Particularly, a difference is made between a low frequency analysis for which an adaptation of the method is required and a high frequency analysis for which direct applicat...

This paper deals with a network formulation of the power balance approach in order to estimate high frequency coupling mechanisms in complex systems. After giving the general principles of this approach found in the scientific literature, the network development of the method is presented, based on an electromagnetic topology analysis. Finally, the...

This report results from a contract tasking Office National d'Etudes et de Recherches Arospatiales (ONERA) as follows: The contractor will investigate methods of updating computer modeling code developed by French researchers. This code was originally developed as part of an experiment performed under the joint US-France international data exchange...

Numerical electromagnetic models based on a typical automotive immunity measurement scenario have been built from a vehicle manufacturer's CAD data and compared with corresponding measurements on a complete vehicle. The simulations were carried out in the time-domain using the TLM and FDTD techniques. Despite the many limitations of both the numeri...

In this paper, we present a hybrid finite difference/finite volume method and we apply it to solve an automotive electromagnetic compatibility (EMC) problem. The principles of the hybrid method and the numerical schemes are described. Simple examples are used to compare this method with the finite difference and finite volume methods alone in terms...

Inter-system EM interference on high level integration platforms or in EM environments produced by various RF equipments (airport type or ship type) may affect significantly functional system-performance. At high frequency, asymptotic modeling, aiming at the prediction of EM field constraints at equipment level in a complex environment, allows one...

The paper gives a status of present electromagnetic (EM) coupling modeling capabilities. Starting from topologically designed systems, it shows how formal rules of the EM topology approach can provide guidance for EM coupling analysis or the development of protection against intentional electromagnetic interference (EMI)- related threats, even in t...

This document considers different ways to improve system level calculations in order to improve operational simulation strategies. A modeling methodology is proposed followed by a discussion on the different aspects of modeling EMC performance. The capabilities of currently available numerical techniques are presented with their advantages and draw...

A numerical hybrid technique combining finite volumes and finite differences in time domain is used to cal- culate the incident field generated at cable ends inside a car illuminated by a nearby antenna. The incident fields are then used as source terms for a transmission line model in order to calculate the wiring response. These results are compa...

This paper provides a brief description of the model validation activities undertaken within the GEMCAR project. The validation approach is outlined and sample re- sults are presented. The results are also analysed using the frequency selective validation (FSV) technique, which pro- vides both quantitative figures of merit and subjective classifi-...

A novel simulation approach to electromagnetic computations involving large, complex systems is described for studying the effects of high power radio-frequency pulses. The approach uses the electromagnetic topology method. The adoption of the multi-conductor transmission analysis gives the results that are in good agreement with other solution met...

This paper deals with the application of electromagnetic field-to-transmission-line coupling models for large cable systems analysis. It emphasizes the use of Agrawal's (1980) model applied here in a numerical simulation of an electromagnetic susceptibility problem up to 500 MHz. Based on the concepts of EM topology, the proposed methodology consis...

This paper presents a work carried out within the FULMEN lightning-on-aircraft oriented European project. It is the second part of the general presentation on the analysis of EM environment inside the aircraft. Therefore, it focuses on numerical calculations of voltage and current transfer functions on the ports of the same prototype wiring harness...

The ESD-induced electromagnetic field on a S/C is computed using the 3D PIC code GEODE. Typical E-field waveforms are deduced and a new susceptibility test at equipment level is proposed as an alternative to the plane wave approach.

Electromagnetic coupling (EMC) problems has long been a concern on the commercial aviation industry. Physical experiments and traditional three dimensional codes that apply Maxwell's equations cannot adequately address most problems. The electromagnetic topology (EMT) theory by Dr. Carl Baum is proposed as a practical solution. A Boeing 707 wiring...

A new software package is able to simulate the effects of the internal EM radiated fields in commercial aircraft wiring. Results from a recent model of a Boeing 707 wiring system showed good agreement with experiments, showing that EMC can be accurately predicted

Reports on a new software package which has demonstrated for the first time the ability to simulate the effects of the internal electromagnetic radiated fields (such as EMP pulses and lightning) in commercial aircraft wiring. Electromagnetic coupling (EMC) has long been of concern to the commercial aviation industry as a pulse caused by lightning c...