Dr. Charles Jullian of IEEE EMC DL

Synopsis: 

This presentation focuses on the analysis of transmission lines using the Electromagnetic Topology (EMT) method introduced by Carl Baum. After a review of the fundamental principles of the Topological Line Method (TLM), the talk will demonstrate how this approach allows the decomposition of a complex system into topological networks, thereby facilitating the analysis of electromagnetic interactions. We will outline the main steps involved in the resolution of these topological networks, highlighting the tools available for their modeling and parameterization.

Concrete examples will illustrate the application of this method: the impact of shielding connections on EMC performance, crosstalk within a complex harness, and the interactions between a high-voltage (HV) system and a data transmission harness. Finally, the presentation will explore more advanced applications of electromagnetic topology, such as health monitoring and the modeling of electrical arcs, demonstrating the versatility and relevance of this approach in addressing today’s industrial challenges.

Biography:

Charles Jullien is a Senior Electromagnetic Compatibility (EMC) Expert at Safran Electrical & Power, where he has been contributing since 2012 to the design, analysis, and qualification of complex aeronautical electrical systems. He has worked on more than 40 industrial programs, providing technical expertise, audits, and training in EMC. He is an active member of Safran’s Electromagnetism expert network and currently chairs the Safran Group roadmap on Tools and Modelling for Electrical Systems, supporting the development of advanced EMC methodologies for aerospace applications.

Dr. Jullien received his PhD in Electronics and Telecommunications with honors from INSA Rennes through a CIFRE program with Safran and ONERA. His doctoral research focused on the modeling and analysis of electromagnetic coupling in complex cable bundles, applied to aeronautical harnesses. He also holds a Master’s degree in Computational Physics and a Bachelor’s degree in Theoretical Physics from Université Montpellier 2. His technical interests include cable and harness EMC, shielding effectiveness, modeling and simulation, and high-voltage challenges in aerospace systems.

Dr. Jullien has delivered over 60+ presentations at major international EMC conferences and forums, authored numerus journal publications and contributed to many patents at Safran Electrical & Power. An active member of the IEEE Electromagnetic Compatibility Society for over 16 years, he serves as Secretary of the IEEE EMC French Chapter, Secretary of EMC TC4, Officer-at-Large of EMC TC8 (Chair of the High-Voltage Challenges for Aerospace subcommittee), and Secretary of IEEE SA Working Group P2855. He is also regularly involved in graduate-level EMC education in France and internationally.