Publications de Marko Mogorovic

Improved Natural-Air-Convection-Cooling Formulas for Medium Frequency Transformer Design Optimization

Marko Mogorovic, Drazen Dujic, Jonas Piet K Le Roy

This paper provides accurate analytic models for a computationally efficient estimation of the natural con- vection cooling coefficients for typical geometries, such as those encountered in transformers. Proper thermal coordination is an essential step of ...

2021

Analysis of the Effectiveness of the Series Inductor Integration Into the MFT for SST Applications

Marko Mogorovic, Drazen Dujic

This paper analyzes the effectiveness of the integration of the series inductor into the medium frequency transformer used for series resonant or dual active bridge converters - galvanically isolated DC-DC converters for high-power medium-voltage (solid st ...

2020

FEM Based Statistical Data-Driven Modeling Approach for MFT Design Optimization

Marko Mogorovic, Drazen Dujic

This paper proposes a novel class of neural-network inspired statistical data-driven models, especially derived for the purpose of design optimization of medium frequency transformers. These models allow for an efficient (3-5 orders of magnitude faster com ...

2020

Computationally Efficient Leakage Inductance Estimation of Multi-Winding Medium Frequency Transformer

Marko Mogorovic, Drazen Dujic

2019

Sensitivity Analysis of Medium Frequency Transformer Designs for Solid State Transformers

Marko Mogorovic, Drazen Dujic

This paper discusses the technical challenges and trade-offs tied to design of medium frequency transformers for medium-voltage high-power applications and emerging solid state transformers. A dedicated design optimization algorithm is used to generate the ...

2019

100kW, 10kHz Medium Frequency Transformer Design Optimization and Experimental Verification

Marko Mogorovic, Drazen Dujic

This paper describes a novel, model based, design optimisation methodology for high-power medium frequency transformers for medium-voltage high-power electronic applications, namely emerging solid state transformers. Presented procedure enables the designe ...

2019

Modeling and Design Optimization of Medium Frequency Transformers for Medium-Voltage High-Power Converters

Marko Mogorovic

Novel high-power medium-voltage converter technologies offering galvanic insulation are needed to support the development of the emerging medium-voltage direct-current grids and further improve the performance of various other applications such as traction ...

EPFL2019

Computationally Efficient Estimation of the Electric-Field Maximums for the MFT Insulation Coordination

Marko Mogorovic, Drazen Dujic

This paper proposes a methodology for computationally-efficient estimation of the local E-field maximums within the transformer winding insulation material for design optimization purposes, where besides the estimation accuracy, the computational cost repr ...

IEEE2019

Modeling and Experimental Verification of Geometry Effect on Core Losses

Marko Mogorovic, Drazen Dujic

2019

Sensitivity Analysis of Medium Frequency Transformer Design

Marko Mogorovic, Drazen Dujic

This paper discusses the technical challenges and trade-offs tied to design of medium frequency transformers (MFTs) for medium-voltage (MV) high-power (HP) power electronic applications, namely emerging solid state transformers (SSTs). A detailed analysis ...

IEEE2018

Medium Frequency Transformer Design and Optimization

Marko Mogorovic, Drazen Dujic

This paper describes the technical challenges tied to modeling and design optimization of the medium frequency transformer (MFT) for power electronic applications, namely emerging solid state transformers (SSTs). A detailed analysis and modelling of the ph ...

2017

Medium Frequency Transformer Leakage Inductance Modeling and Experimental Verification

Marko Mogorovic, Drazen Dujic

This paper provides detailed analytical modelling and finite elements method (FEM) analysis of the medium frequency transformer (MFT) leakage inductance, as one of the key design factors governing the operation of galvanically isolated power electronics co ...

2017

Thermal Modeling and Experimental Verification of an Air Cooled Medium Frequency Transformer

Marko Mogorovic, Drazen Dujic

This paper provides detailed analytical modeling and finite elements method (FEM) analysis of the thermal behavior of the medium frequency transformer (MFT). A comprehensive analytical model in form of a thermal network consisting of conduction, convection ...

Ieee2017