Publications de Michail Vasiladiotis

Operation and Control of Single-to-Three-Phase Direct AC/AC Modular Multilevel Converters under Asymmetric Grid Conditions

Alfred Rufer, Michail Vasiladiotis, Nicolas Cherix

Single-to-three-phase direct AC/AC Modular Multilevel Converters have gained a significant interest in the field of railway interties. The use of such an MMC-based structure implies more advanced control techniques as well as design requirements, especiall ...

2015

Single-to-Three-Phase Direct AC/AC Modular Multilevel Converters with Integrated Split Battery Energy Storage for Railway Interties

Alfred Rufer, Michail Vasiladiotis, Nicolas Cherix

This paper presents a global hierarchized control method for railway interties based on the direct singleto-three-phase AC/AC Modular Multilevel Converter with integrated split battery energy storage. The power and voltage decoupling between the converter ...

2015

Impact of Grid Asymmetries on the Operation and Capacitive Energy Storage Design of Modular Multilevel Converters

Alfred Rufer, Michail Vasiladiotis, Nicolas Cherix

The grid-connected modular multilevel converter (MMC) is very likely to operate under asymmetric grid conditions. Such a converter features several unique characteristics, whichmake its analysis different from other types of power converters in similar cas ...

Institute of Electrical and Electronics Engineers2015

Analysis and Control of Modular Multilevel Converters with Integrated Battery Energy Storage

Alfred Rufer, Michail Vasiladiotis

Multilevel Converters and battery energy storage systems (BESS) are key components in present and future medium voltage networks, where an important integration of renewable energy sources takes place. The Modular Multilevel Converter (MMC) offers the capa ...

Ieee-Inst Electrical Electronics Engineers Inc2015

High-Order Vector Control of Grid-Connected Voltage Source Converters with LCL-Filters

Alfred Rufer, Michail Vasiladiotis, Behrooz Bahrani

This paper proposes a vector control strategy for LCL-filter-based grid-connected voltage source converters (VSCs). The proposed control strategy is inherently capable of attenuating the resonance phenomenon of such systems. This is an advantage over the e ...

Institute of Electrical and Electronics Engineers2014

Modular Converter Architecture for Medium Voltage Ultra Fast EV Charging Stations: Dual Half-Bridge-based Isolation Stage

Alfred Rufer, Michail Vasiladiotis, Behrooz Bahrani, Niklaus Burger

The concept of ultra fast charging of Electric Vehicles (EVs) is expected to contribute significantly to their widespread utilization in long-distance travels. Towards this direction, emerging power electronic topologies will be the key components of the d ...

2014

Modular Multilevel Converters with Integrated Split Battery Energy Storage

Michail Vasiladiotis

The electric power grid is undergoing significant changes and updates nowadays, especially on a production and transmission level. Initially, the move towards a distributed generation in contrast to the existing centralized one implies a significant integr ...

EPFL2014

Accurate Capacitor Voltage Ripple Estimation and Current Control Considerations for Grid-Connected Modular Multilevel Converters

Alfred Rufer, Michail Vasiladiotis, Nicolas Cherix

In this paper the analytical solution for the submodule voltage ripple equations of a Modular Multilevel Converter (MMC) is derived, based on the knowledge of the external voltage/current magnitudes, and enhancing a concept previously presented in literatu ...

Ieee-Inst Electrical Electronics Engineers Inc2014

Dynamic Analysis and State Feedback Voltage Control of Single-Phase Active Rectifiers with DC-Link Resonant Filters

Alfred Rufer, Michail Vasiladiotis

Single-phase active rectifiers exhibit an inherent strong second-order current harmonic on their DC-link. The latter is often undesirable from a load point of view and is therefore chosen to be eliminated. A common method is the use of a resonant passive L ...

Ieee-Inst Electrical Electronics Engineers Inc2014

Operation of Modular Multilevel Converters Under Grid Asymmetries

Alfred Rufer, Michail Vasiladiotis, Daniel Siemaszko, Nicolas Cherix

The Modular Multilevel Converter is very likely to operate in a grid-connected mode under asymmetric conditions. Such a converter features several unique characteristics, which make its analysis different from other types of power converters in similar cas ...

2013