Overview and details of the sessions of this conference. Please select a date or location to show only sessions at that day or location. Please select a single session for detailed view (with abstracts and downloads if available).
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A Review on the Characterization, Modeling and Simulation of Conducted and Radiated Emissions of Power Printed Circuit Boards (PPCB)
Time:
Monday, 01/Sept/2025:
11:00am - 12:30pm
Location:Room 105
75 seats, Tower 44, 1st floor
Session Abstract
For complete Electromagnetic Compatibility (EMC) studies at PCB and chip levels, we have conceived some demonstrators to precisely characterize and model the more realistic electromagnetic behaviors of circuits at PCB level. We want to keep understandings on effects and contributions on electrical and physical parameters of the different parts of a circuit on PCB. This description is focused on power chips of different semiconductor technologies, that are the main sources of electromagnetic noises in the range of the GHz. This is due to the very high switching times of these components that are nowadays under the thousands of nanoseconds and then can produce high frequency (HF) resonances. Emissions in conducted mode in power PCB are now over the MHz, even with a very low frequency voltage command (kHz). Then, radiated mode is inherently activated, because of the length of the wires and the dimensions of the Power PCB. The nominal design and dimensions, the choice of test points and HF connectors of our PPCB demonstrator are defined for both direct conducted measurements in differential and common mode, and for “equivalent Far-field” radiation measurements in TEM cells. We propose to review EMC/ EMI characterizations available for conducted and radiated evaluations of the emissions at component and circuit level. Then we present the different approaches for constructing an equivalent electrical or numerical model of the PPCB including its environment: packaging, cables, connectors and especially the insertion of probes and antenna, all contributors of the final EMC responses. Some examples of these "EMC Virtual Experiment", on demonstrators and case studies, would show the audience that they can master this methodology for their own EMC understandings and investigations. We illustrate this tutorial by some real uses and applications of this "Virtual Model " in some new and actual scientific and industrial topics: Multiphysics and external temperature impacts, conducted models for aerospace/MEA, couplings in traction chain of trains.
Presentations
11:00am - 11:30am
Basics of conducted and radiated emissions for Power Printed Circuit Board (PPCB)
We want to review understandings on effects and contributions on electrical and physical parameters of the different parts of a circuit on PCB, for complete Electromagnetic Compatibility (EMC) studies at PCB and chip levels.This description is focused on power chips of different semiconductor technologies, that are the main sources of electromagnetic noises in the range of the GHz. We propose to review EMC/ EMI conducted and radiated evaluations of the emissions at component and circuit level. We present the different approaches for constructing an equivalent electrical or numerical model of the PPCB including its environment: packaging, cables, connectors and especially the insertion of probes and antenna, all contributors of the final EMC responses. Some examples of these "EMC Virtual Experiment", on demonstrators and case studies, would show the audience that they can master this methodology for their own EMC understandings and investigations.
Contents:
1. Basics of EMC for power modules
2. Basics of conducted caracterization of Power PCB
3. Basics of radiated caracterization of Power PCB.
4. Electrical Model for Power PCB
5. Numerical Model for Power PCB
6. Cases studies on PPCB demonstrators
11:30am - 12:00pm
A behavioral model for conducted mode emission of electrical converters for the MEA
Emissions in conducted mode in power PCB and converters are now over the MHz, even with a very low frequency voltage command (kHz). Then, radiated mode is inherently activated, because of the length of the wires and the dimensions of the Power PCB. In aerospace applications and challenging programs of MEA (More Electrical Aircraft), EMC modelling and simulation are a critical key for a good design and architectures of distributed power converters in electrical aircraft. The presentation will focus on constructing behavioral models for realistic conducted mode emission investigations in electrical converter for the MEA.
12:00pm - 12:30pm
Oriented EMC simulations to design High-Power modules in Railway
Emmanuel Batista
Alstom Transport S.A., Séméac, France
This presentation concerns the global review of mixed electric-electromagnetic-numerical (3D) modelling technics dedicated to oriented EMC and Multiphysics simulations used in the flow design of high-powers modules in Railway. Some multiphysics considerations, as temperature, reliability, vibrations, will be introduced to understand their real impact on EM responses and EMC figures.
