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EMC of Grid-Tied Power Electronic Converters in Supraharmonics Frequency Range (Part 2)
Time:
Monday, 01/Sept/2025:
11:00am - 12:30pm
Location:Room 107
75 seats, Tower 44, 1st floor
Session Abstract
The global shift of energy paradigm to carbon-free technologies has significantly increased the penetration of grid-tied power electronics. Power electronic systems are a key enabler in the energy conversion process, from renewable generation like wind/solar power, electric vehicles down to lighting. To ensure smooth transition to green technologies, electronic systems must be compatible with each other and the power grid. Recently, there have been new disturbances on power grid due to high incompatibility of power electronic systems in the new frequency range of 2-150 kHz (i.e., supraharmonics) which has been unregulated in the past. Therefore, the introduction of new international standards will challenge the power electronics industry as no clear solution exists to comply with new standards.
The emphasis of this tutorial is to give an overview on electromagnetic compatibility of power electronic converters in the supraharmonics frequency range. Firstly, the power grid data acquisition and time-frequency behavior will be introduced as well as suitability of standard AMN (Artificial Mains Network) or LISN (Line Stabilization Network). The noise propagation path modeling of power electronic converters will be focused for the second part of the tutorial, discussing the influence of DM and CM noise as well as closed loop impedance. Further, the black-box modeling strategy will be presented for power converter characterization. The third part of the tutorial is dedicated to EMI filter design as well as lifetime considerations which suitable topology and material selection will be discussed as well as influencing factors on the filter lifetime consideration. Finally, the tutorial is concluded by introducing a new developed software tool for EMI prediction and design for EMC in power electronic converters.
In this part of the tutorial, the EMI filter gain and effectiveness with respect to the topology and material will be discussed. Case studies for EMI filtering design and volume optimization for different case studies including the active spectral shaping modulation strategy will be addressed and analyzed. The importance of considering the EMI filter lifetime for reliable filtering design will be discussed including degradation mechanisms of capacitors and magnetic components and detailed discussions on the lifetime behavior of film capacitors under different environmental conditions will be presented
12:00pm - 12:10pm
Power Electronic Electromagnetic Interference Simulation Software Tool
Pooya Davari
Aalborg University, Denmark
The final part of the tutorial is dedicated to introducing a software tool which encompasses different modeling modules for estimating EMI of power electronic converters and design for EMC. The role of components databases as well as modeling of EMI measurement equipment in the simulation environment will be addressed. Notably, the tool also includes black/box modeling module to estimate EMI and possible filtering.
