Karl Hollaus - IEEE Xplore Author Profile

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Author details

Karl Hollaus

Also published under: K. Hollaus

Publications

57

Citations

257

Publications by Year

20002024

Co-Authors:

A. AltesBernhard AuingerMd Tawhid Bin TarekOszkr BiroP. Caldera

Show All Co-Authors (37)

Karl Hollaus

Also published under: K. Hollaus

Affiliation

Technische Universität Wien

Institute of Analysis and Scientific Computing

Vienna, Austria

Publication Topics

Eddy Current,
Finite Element,
Magnetic Flux,
Finite Element Method,
Magnetic Field,
Dielectric Layer,
Magnetic Core,
Relative Permeability,
Iron Sheets,
Magnetic Vector Potential,
Weak Form,
Multiscale Finite Element Method

Biography

Karl Hollaus received the M.Sc. (Tech.) degree and Ph.D. (Tech.) degree in electrical engineering from the Graz University of Technology, Graz, Austria, in 1997 and 2001, respectively.,He is currently a Senior Scientist with the Institute for Analysis and Scientific Computing (ASC), Technische Universität Wien, Vienna, Austria. His research focuses on computational electromagnetics, particularly the finite-element modeling of electromagnetic fields.(Based on document published on 16 November 2023).

Publications

57

Citations

257

Publications by Year

20002024

Co-Authors:

A. Altes
Bernhard Auinger
Md Tawhid Bin Tarek
Oszkr Biro
P. Caldera

Show All Co-Authors (37)

Author's Published Works

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Showing 1-9 of 9 results

Conferences (6)

Journals (3)

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Mathieu Rossi(7)
Guillaume Parent(3)
M. Rossi(2)
Daniel Roger(2)
Jean V. Leite(1)
EOMYS Engineering, Lille-Hellemmes, France(1)
Univ. Artois, Laboratoire Systèmes Électrotechniques et Environnement (LSEE), Béthune, France(1)
Thyssenkrupp Electrical Steel, Isbergues, France(1)
Transrail B&V, France(1)
thyssenkrupp Electrical Steel, Isbergues, France(1)
IEEE Transactions on Magnetics(3)
2019 IEEE 13th International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG)(2)
2010 IEEE Vehicle Power and Propulsion Conference(1)
2011 IEEE International Electric Machines & Drives Conference (IEMDC)(1)
2019 IEEE 12th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED)(1)
IEEE(9)
Sonderborg, Denmark(2)
Lille, France(1)
Niagara Falls, ON, Canada(1)
San Diego, CA, USA(1)
Toulouse, France(1)
Magnetic Core(6)
Core Loss(4)
Eddy Current(3)
Finite Element Analysis(3)
Magnetic Field(3)

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Modeling of Magnetic Anisotropy in Electrical Steel Sheet by Means of Cumulative Distribution Functions of Gaussians

Guilherme C. A. Tolentino;Jean V. Leite;Mathieu Rossi;Olivier Ninet;Guillaume Parent;Jonathan Blaszkowski

IEEE Transactions on Magnetics

Year: 2022 | Volume: 58, Issue: 8 | Journal Article |

Cited by: Papers (2)

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This article proposes a methodology for modeling magnetic anisotropy in ferromagnetic materials. This approach was initially used to represent the isothermal remanent magnetization (IRM) acquired by natural mineral assemblages and based on the use of the cumulative distribution function (CDF) of a probability density function (PDF). For the purpose of this work, the anisotropy of electrical steel ...Show More

Modeling of Magnetic Anisotropy in Electrical Steel Sheet by Means of Cumulative Distribution Functions of Gaussians

Guilherme C. A. Tolentino;Jean V. Leite;Mathieu Rossi;Olivier Ninet;Guillaume Parent;Jonathan Blaszkowski

IEEE Transactions on Magnetics

Year: 2022 | Volume: 58, Issue: 8 | Journal Article |

Assessments of High-Power Solid State Transformers based on Grain-Oriented magnetic cores

H. Ichou;D. Roger;M. Rossi;T. Belgrand

2019 IEEE 12th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED)

Year: 2019 | Conference Paper |

Cited by: Papers (2)

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All fields of activity using electric energy are more than ever challenged for efficiency and versatility of energy flow at reasonable costs. The emergence of electronic components with high voltage and current capabilities enables to cope with those challenges. The paper deals with assessments on Medium Frequency (MF) high-power Solid State Transformer (SST). A good technical-economic balance can...Show More

Assessments of High-Power Solid State Transformers based on Grain-Oriented magnetic cores

H. Ichou;D. Roger;M. Rossi;T. Belgrand

2019 IEEE 12th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED)

Year: 2019 | Conference Paper |

Solid State Transformer based on Grain-Oriented Electrical Steel Wound Cores

Sidi Hamdinou;Daniel Roger;Mathieu Rossi;Thierry Belgrand

2019 IEEE 13th International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG)

Year: 2019 | Conference Paper |

Cited by: Papers (3)

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Considering the progress in semi-conductor technology and magnetic core material performances, an increased attention is paid to the so called Solid-State Transformers (SST). Besides the ability to monitor the direction of the power flow compared to classical 50/60 Hz transformers, these devices, composed of power converters placed each side of a high frequency power transformer, offer many advant...Show More

Solid State Transformer based on Grain-Oriented Electrical Steel Wound Cores

Sidi Hamdinou;Daniel Roger;Mathieu Rossi;Thierry Belgrand

2019 IEEE 13th International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG)

Year: 2019 | Conference Paper |

Over-voltage distribution between turns of the transformer coils of large SST cells

Daniel Roger;Mathieu Rossi

2019 IEEE 13th International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG)

Year: 2019 | Conference Paper |

Cited by: Papers (1)

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Solid state transformers (SST) are becoming key elements for integrating an increasing part of intermittent renewable energy in electric grids [1]. They bring also compact solutions for transportation systems [2]. Our society needs powerful SSTs for a reasonable cost. A good technical-economic balance can be reach by designing large power SST cells with mature technologies for power electronics, m...Show More

Over-voltage distribution between turns of the transformer coils of large SST cells

Daniel Roger;Mathieu Rossi

2019 IEEE 13th International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG)

Year: 2019 | Conference Paper |

Coupling Transformer Operation of a Dynamic Voltage Restorer with Electronics Protected from Fault Currents Under Electrical Grid Conditions

Hervé Roisse;Guillaume Parent;Mathieu Rossi;Virginie Majchrzak

2019 IEEE International Electric Machines & Drives Conference (IEMDC)

Year: 2019 | Conference Paper |

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To improve electrical grids power quality, a dynamic voltage restorer with a magnetic voltage source converter protection scheme integrated in the coupling transformer is developed. A prototype was built and the aim of this paper is to study its behavior during all operation modes for which it is intended under grid conditions. It is shown that it does realize the voltage regulation function durin...Show More

Coupling Transformer Operation of a Dynamic Voltage Restorer with Electronics Protected from Fault Currents Under Electrical Grid Conditions

Hervé Roisse;Guillaume Parent;Mathieu Rossi;Virginie Majchrzak

2019 IEEE International Electric Machines & Drives Conference (IEMDC)

Year: 2019 | Conference Paper |

Determination of Partial Discharge Inception Voltage and Location of Partial Discharges by Means of Paschen’s Theory and FEM

Guillaume Parent;Mathieu Rossi;Stéphane Duchesne;Patrick Dular

IEEE Transactions on Magnetics

Year: 2019 | Volume: 55, Issue: 6 | Journal Article |

Cited by: Papers (18)

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Determining the partial discharge (PD) inception voltage (PDIV) is a key point when designing electrical coils or busbars. In this paper, a method making it possible to calculate the PDIV as well as to locate PDs in windings of any shape is presented. It is based on a 2-D finite-element computation using both dual-i.e., scalar and vector potential-electrostatic formulations and a comparison of the...Show More

Determination of Partial Discharge Inception Voltage and Location of Partial Discharges by Means of Paschen’s Theory and FEM

Guillaume Parent;Mathieu Rossi;Stéphane Duchesne;Patrick Dular

IEEE Transactions on Magnetics

Year: 2019 | Volume: 55, Issue: 6 | Journal Article |

Vibration Reduction of Inductors Under Magnetostrictive and Maxwell Forces Excitation

Mathieu Rossi;Jean Le Besnerais

IEEE Transactions on Magnetics

Year: 2015 | Volume: 51, Issue: 12 | Journal Article |

Cited by: Papers (38)

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This paper analyzes the phenomenon of vibrations in U-shaped (two-limb) inductors with distributed air gaps due to both Maxwell and magnetostriction forces. A weak 2-D magnetomechanical finite-element model (FEM), including magnetostrictive tensor, is developed under the GetDP open-source simulation environment. A simple analytical model of the reactor core vibration under magnetic forces is estab...Show More

Vibration Reduction of Inductors Under Magnetostrictive and Maxwell Forces Excitation

Mathieu Rossi;Jean Le Besnerais

IEEE Transactions on Magnetics

Year: 2015 | Volume: 51, Issue: 12 | Journal Article |

Multiphysic design rules applied to inductors or transformers for railway application

Mathieu Rossi;Michel Hecquet;Vincent Lanfranchi;Johnny Bou Saada;Bruno Lefebvre

2011 IEEE International Electric Machines & Drives Conference (IEMDC)

Year: 2011 | Conference Paper |

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Nowadays, power converters in the railway industries are increasingly more compact and powerful. This progress is due to the use of fast and efficient components capable of working at high frequency such as IGBT. However, this evolution leads to a considerable loss of harmonics in transformers and complicates their design. Moreover, the mean time between failures (MTBF) must be very long. This MTB...Show More

Multiphysic design rules applied to inductors or transformers for railway application

Mathieu Rossi;Michel Hecquet;Vincent Lanfranchi;Johnny Bou Saada;Bruno Lefebvre

2011 IEEE International Electric Machines & Drives Conference (IEMDC)

Year: 2011 | Conference Paper |

Multi-physics modeling of industrial inductors associated to converters

G. Parent;M. Rossi;M. Hecquet;V. Lanfranchi;M. Bekemans

2010 IEEE Vehicle Power and Propulsion Conference

Year: 2010 | Conference Paper |

Cited by: Papers (1)

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Acoustics comfort is an increasingly important factor at the design stage of industrial inductors associated to converters. In addition, power converters in railway domain are more and more compact and powerful. That is why the lumped models for the electromagnetic, thermic and vibro-acoustic parts are developed. This aim of this paper is to detail the multi-physical model in order to design the i...Show More

Multi-physics modeling of industrial inductors associated to converters

G. Parent;M. Rossi;M. Hecquet;V. Lanfranchi;M. Bekemans

2010 IEEE Vehicle Power and Propulsion Conference

Year: 2010 | Conference Paper |

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