EPE Association: EPE 2025 - DS2o: EMI/EMC in Power Electronics including HF Phenomena

EPE 2025 - DS2o: EMI/EMC in Power Electronics including HF Phenomena
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2025 - Conference > EPE 2025 - Topic 10: Converter Modelling, Design and Low-level Control > EPE 2025 - DS2o: EMI/EMC in Power Electronics including HF Phenomena

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   An Improved Balanced Cascaded Buck-Boost Converter Topology for a Wide Input Voltage Range and Reduced Conducted Interference
By Eric FRITZE, Michael MEISSNER, Kevin KRAKOW, Stefan DICKMANN, Klaus F. HOFFMANN [View]
[Download]

Abstract: This paper discusses an advanced version of the balanced cascaded buck-boost converter, which achieves a better voltage balancing of the converter with respect to ground. This leads to a broadly improved input and output common mode behavior of the non-isolated topology compared to the unbalanced version. Furthermore, the positive impact of additional Y-capacitors on the EMI is shown. Despite using lower voltage-class devices, the approach makes the topology suitable for higher power applications and potentially reduces additional filter requirements.

   Assessment of Supraharmonic Emissions of Parallel Grid Connected Inverters Using Symmetric Carrier Phase Shift Concept
By Abdellatif ABOUTALEB, Marwa OSHEBA, Jan DESMET, Jos KNOCKAERT [View]
[Download]

Abstract: This paper presents an experimental study on the high frequency emissions in supraharmonic (SH) range of grid connected inverters (GCIs) under symmetric carrier phase shift concept. The aim of the study is to show the advantages and the limitations of using the carrier phase shift concept for parallel connected GCIs in distributed power generation systems. The experimental study is done with a dSPACE MicroLabBox based system of two GCIs under two symmetric and asymmetric scenarios.

   Impact of PWM Modulation Strategies on Bearing Currents in Electric Excited Synchronous Motors
By Yuyang LI, Nicolas PATIN, Vincent LANFRANCHI, Nicolas BUIRON, Rachid MISSOUM, Clémence HUET, Patrice MERCAY [View]
[Download]

Abstract: Bearing failures are a critical issue in electrically excited synchronous machines (EESMs), particularlydue to electrical erosion caused by high-frequency converters in modern electric and hybrid electric Vehicles. This phenomenon, driven by common-mode currents and parasitic capacitances, significantly impacts the reliability and performance of rotating machinery. This paper investigates the impact of various converter control strategies in mitigating bearing erosion. Through comprehensive modeling of the complete drive system\_including motor components and power electronics\_simulations are performed to evaluate the effectiveness of different PWM approaches and their combinations on reducing bearing voltage and current. The results provide valuable insights into the optimal control strategies that minimize electrical corrosion, offering a pathway to enhanced durability andperformance for EESM-based systems.

   Interference propagation in two stage PV inverters
By Amin GHOLIZAD, Jan DESMET, Jos KNOCKAERT [View]
[Download]

Abstract: In this paper, current harmonic propagation of a two stage PV inverter is investigated in both common mode and differential mode in the supraharmonics range [2 - 150 kHz]. The harmonics of the DC/AC inverter are present in both common mode and differential mode. In most cases only inverter harmonics are considered in filtering. However, it is seen that DC/DC converter harmonic currents are present in common mode of the output current of the inverter at grid side. Therefore,appropriate common mode filtering is needed to take into account for DC/DC converter harmonics as well. This finding is simulated in MATLAB/Simulink and verified through a commercial PV inverter with PV emulator.

EPE 2025 - DS2o: EMI/EMC in Power Electronics including HF Phenomena
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2025 - Conference > EPE 2025 - Topic 10: Converter Modelling, Design and Low-level Control > EPE 2025 - DS2o: EMI/EMC in Power Electronics including HF Phenomena
	[return to parent folder]

	An Improved Balanced Cascaded Buck-Boost Converter Topology for a Wide Input Voltage Range and Reduced Conducted Interference By Eric FRITZE, Michael MEISSNER, Kevin KRAKOW, Stefan DICKMANN, Klaus F. HOFFMANN	[View] [Download]
Abstract: This paper discusses an advanced version of the balanced cascaded buck-boost converter, which achieves a better voltage balancing of the converter with respect to ground. This leads to a broadly improved input and output common mode behavior of the non-isolated topology compared to the unbalanced version. Furthermore, the positive impact of additional Y-capacitors on the EMI is shown. Despite using lower voltage-class devices, the approach makes the topology suitable for higher power applications and potentially reduces additional filter requirements.

	Assessment of Supraharmonic Emissions of Parallel Grid Connected Inverters Using Symmetric Carrier Phase Shift Concept By Abdellatif ABOUTALEB, Marwa OSHEBA, Jan DESMET, Jos KNOCKAERT	[View] [Download]
Abstract: This paper presents an experimental study on the high frequency emissions in supraharmonic (SH) range of grid connected inverters (GCIs) under symmetric carrier phase shift concept. The aim of the study is to show the advantages and the limitations of using the carrier phase shift concept for parallel connected GCIs in distributed power generation systems. The experimental study is done with a dSPACE MicroLabBox based system of two GCIs under two symmetric and asymmetric scenarios.

	Impact of PWM Modulation Strategies on Bearing Currents in Electric Excited Synchronous Motors By Yuyang LI, Nicolas PATIN, Vincent LANFRANCHI, Nicolas BUIRON, Rachid MISSOUM, Clémence HUET, Patrice MERCAY	[View] [Download]
Abstract: Bearing failures are a critical issue in electrically excited synchronous machines (EESMs), particularlydue to electrical erosion caused by high-frequency converters in modern electric and hybrid electric Vehicles. This phenomenon, driven by common-mode currents and parasitic capacitances, significantly impacts the reliability and performance of rotating machinery. This paper investigates the impact of various converter control strategies in mitigating bearing erosion. Through comprehensive modeling of the complete drive system\_including motor components and power electronics\_simulations are performed to evaluate the effectiveness of different PWM approaches and their combinations on reducing bearing voltage and current. The results provide valuable insights into the optimal control strategies that minimize electrical corrosion, offering a pathway to enhanced durability andperformance for EESM-based systems.

	Interference propagation in two stage PV inverters By Amin GHOLIZAD, Jan DESMET, Jos KNOCKAERT	[View] [Download]
Abstract: In this paper, current harmonic propagation of a two stage PV inverter is investigated in both common mode and differential mode in the supraharmonics range [2 - 150 kHz]. The harmonics of the DC/AC inverter are present in both common mode and differential mode. In most cases only inverter harmonics are considered in filtering. However, it is seen that DC/DC converter harmonic currents are present in common mode of the output current of the inverter at grid side. Therefore,appropriate common mode filtering is needed to take into account for DC/DC converter harmonics as well. This finding is simulated in MATLAB/Simulink and verified through a commercial PV inverter with PV emulator.