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An advanced multilevel converter topology with reduced switching elements Universiteit Gent
Smart grid applications, renewable energy utilization and electric vehicles (EVs) are attracting researchers due to their importance nowadays as well as in the future. An efficient power electronic converter is a main and common topic for research in this area. In this paper, a prototype of the electrical part of a power-train for EVs using an advanced multilevel converter topology is introduced, discussed and analysed. A comparison between the ...
Can flying capacitor multilevel converter with natural voltage balancing be good for practical applications? Universiteit Gent
Comparative study of different multilevel DC/DC converter topologies for second-life battery applications Vrije Universiteit Brussel
This paper is part of a research project, which aims to investigate the possibilities of using the second life batteries after their replacement from plug-in electric vehicles (PHEVs), hybrid electric vehicles (HEVs) and battery electric vehicles (EVs) for smart grid applications. Batteries which are used for vehicular service cannot be used once that the capacity becomes less than 70%-80% [1]. The remaining capacity of the battery can be ...
Comparative Study of Different Multilevel DC/DC Converter Topologies for Second-Life Battery Applications Vrije Universiteit Brussel
This paper is part of a research project, which aims to investigate the possibilities of using the second life batteries after their replacement from plug-in electric vehicles (PHEVs), hybrid electric vehicles (HEVs) and battery electric vehicles (EVs) for smart grid applications. Batteries which are used for vehicular service cannot be used once that the capacity becomes less than 70% - 80% [1]. The remaining capacity of the battery can be ...
Modeling of the Modular Multilevel Converter using Dynamic Phasors: Reduced-Order Models for Small-Signal Stability Analysis KU Leuven
The decarbonization of the power system is becoming ever more urgent to limit global warming. Strengthening the electricity transmission networks is essential to enhance the proliferation of renewable energy sources (RES), which plays an integral role in the energy transition. High voltage direct current (HVdc) interconnections based on the voltage source converter (VSC) technology are proven candidates to strengthen power systems and ...
Dimensioning and Modulation Index Selection for the Hybrid Modular Multilevel Converter KU Leuven
© 1986-2012 IEEE. A hybrid modular multilevel converter, comprising a mixture of full-bridge and half-bridge submodules, provides tolerance to dc faults without compromising the efficiency of the converter to a large extent. The inclusion of full bridges creates a new freedom over the choice of ratio of ac-to-dc voltage at which the converter is operated, with resulting impact on the converter's internal voltage, current, and energy deviation ...
A Modular Multilevel DC-DC Converter With a Compact Sub-Module Stack Suited to Low Step Ratios KU Leuven
© 1986-2012 IEEE. The voltage ratings for dc transmission and distribution are not currently standardized because cable technology is advancing rapidly and therefore a low step-ratio dc-dc converter at multi-megawatt scale is a crucial technology for combining point-to-point dc links into multi-terminal networks. This paper presents a modular multilevel dc-dc converter configuration with only a single stack of half-bridge sub-modules (SM) and a ...
Reduced Modular Multilevel Converter Model to Evaluate Fault Transients in DC Grids KU Leuven
This paper proposes a reduced model for a modular multilevel converter (MMC) that can be used to evaluate the first transient after a short circuit fault in a DC grid. Detailed modelling of an MMC involves a large number of electrical nodes, hence requiring high computational effort. Reduced converter models have been proposed in the literature. However, calculation times can still be high for large grids. The reduced model proposed in this ...
Modeling and Control of a Modular Multilevel Converter Based on a Battery Energy Storage System with Soft Arm State-of-Charge Balancing Control Vrije Universiteit Brussel
Modular multilevel converters (MMCs) with integrated battery energy storage systems (BESSs) are becoming crucial for modern power grids. This paper investigates the modeling and control of a grid-connected MMC-BESS, with a specific emphasis on state-of-charge (SoC) balancing. Compared to conventional hard arm SoC balancing control (HASBC), this paper proposes an alternative soft arm SoC balancing control (SASBC). The simulation results and ...