Publication
Multiport Resonant DC-DC Converter
Publications associées (46)
DC Power Distribution Networks with Direct Current Transformers
The shift towards DC power distribution networks, enabled by power electronics technologies, is changing the nature of electrical power systems. Nowadays, DC power distribution networks can effectively support the high penetration of distributed energy res ...
EPFL2024Dynamics analysis for DC transformers integration in hybrid AC‐DC power distribution networks
Drazen Dujic, Andrea Cervone, Jules Christian Georges Macé, Max Dupont, Renan Pillon Barcelos
In AC/DC power distributions networks, power converters are interfacing buses to ensure DC voltage regulation and power distribution. Active front ends are used between AC and DC buses and two typical control schemes that can be implemented are voltage reg ...
2023High frequency IGCT operation for DC transformer
In spite of the dominance of ac technology for the vast majority of power transmission and distributionsince the late 19th century, the past decades have seen an increase in use of dc electrical power. Inparticular, this has been the case both in high volt ...
EPFL2022Multiobjective Vector Modulation for Improved Control of NPC-Based Multi-Source Inverters in Hybrid Traction Systems
The concept of a multi-source inverter (MSI) based on NPC topology was recently introduced for hybrid-electric powertrains to connect several dc sources to the traction load in a single conversion stage without magnetics. This work proposes a new modulatio ...
2022Direct Current Transformer Impact on the DC Power Distribution Networks
Drazen Dujic, Renan Pillon Barcelos
The latest developments in dc transformer technology are enabling larger and more complex dc power distribution systems. However, the literature is scarce regarding the investigation and quantification of its impact on the dc grid. Therefore, this paper an ...
2022Design Optimization of a MW-level Medium Frequency Transformer
Drazen Dujic, Nikolina Djekanovic
Nowadays, with the increased interest in applications dealing with high-power medium-voltage conversion, there is a strong need to master the design of medium-frequency transformers, which are one of the key components of modern DC transformers. The paper ...
2022Hybrid Modular Multilevel Converter for Pumped Hydro Storage Applications
Energy balance in a power system must be maintained at all times, regardless of the variations in generation and consumption. Large Pumped Hydro Storage Plants (PHSPs) are introduced to the power system to accumulate the excess of energy during the low dem ...
EPFL2022Power Shifts, Emigration, and Population Sorting
We investigate the consequences of a peaceful shift of power from one social group to another. Theoretically, we show that an individual’s decision to stay put or migrate depends on the difference between the political preferences of groups and the change ...
ETH Zurich2022Current Limiting in Overload Conditions of an LLC-Converter-Based DC Transformer
The dc transformers based on an LLC converter operated in open loop near resonant frequency have several crucial advantages compared to other topologies. These advantages are the stiff voltage ratio with a natural power flow, the dc grid isolation via medi ...
2021IGCT Based Solid State Resonant Conversion
Driven by the environmental changes, penetration of renewables and the need for more flexible power grid, DC is reemerging as a basis for future power networks. Already established in the area of HVDC for very long distance transmission, more and more atte ...
EPFL2020