Klaus Roppert

Riener, C. M., Bauernfeind, T., Kvasnicka, S., Roppert, K. & Kaltenbacher, M., 2023, Proceedings of the 24th International Conference on the Computation of Electromagnetic Fields.

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

Comparing two topology transformer hysteresis models derived from DC hysteresis measurements

Albert, D., Domenig, L. D., Schachinger, P., Roppert, K. & Renner, H., 28 Feb 2023, (E-pub ahead of print) In: COMPEL - The International Journal for Computation and Mathematics in Electrical and Electronic Engineering. 42, 4, p. 861-877 17 p.

Research output: Contribution to journal › Article › peer-review

Open Access

File

Design Optimization of a Sensor-Actuator System to Determine Local Variations of Magnetic Permeability

Reinbacher-Köstinger, A., Gschwentner, A., Roppert, K., Museljic, E. & Kaltenbacher, M., 2023, Proceedings of the 24th International Conference on the Computation of Electromagnetic Fields.

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

Detection of Distorted Excitation Voltage of Power Transformers Using Vibration Measurements

Albert, D., Roppert, K., Würde, A., Engelen, C., Schurhuber, R. & Moser, A., 1 Nov 2023, 2023 13th IEEE International Workshop on Applied Measurements for Power Systems, AMPS 2023 - Proceedings. p. 1-6 6 p.

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

Determination of Local Magnetic Material Properties using an Inverse Scheme

Gschwentner, A., Roppert, K. (Guest ed.) & Kaltenbacher, M. (Guest ed.), 28 Jul 2023, (E-pub ahead of print) In: IEEE Transactions on Magnetics. 4 p.

Research output: Contribution to journal › Article › peer-review

Open Access

Employing AutoDiff and Neural Networks for Parameter Identification of Energy Based Hysteresis Models

Museljic, E., Roppert, K., Domenig, L. D., Reinbacher-Köstinger, A. & Kaltenbacher, M., 23 May 2023, (Accepted/In press).

Research output: Contribution to conference › Abstract › peer-review

Employing automatic differentiation and neural networks for parameter identification of an energy based hysteresis model

Museljic, E., Roppert, K., Domenig, L. D., Reinbacher-Köstinger, A. & Kaltenbacher, M., 14 Dec 2023, In: International Journal of Applied Electromagnetics and Mechanics. 73, 4, p. 415-427 13 p.

Research output: Contribution to journal › Article › peer-review

In-situ qualification of semi-rigid and flexible RF gaskets by means of S-parameter measurements

Bauer, S., Türk, C. & Roppert, K., 2023, 2023 IEEE Symposium on Electromagnetic Compatibility and Signal/Power Integrity, EMC+SIPI 2023. Institute of Electrical and Electronics Engineers, p. 387 1 p.

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

Material Data Identification in an Induction Hardening Test Rig with Physics-Informed Neural Networks

Asadzadeh, M. Z., Roppert, K. & Raninger, P., Jul 2023, In: Materials. 16, 14, 5013.

Research output: Contribution to journal › Article › peer-review

Open Access

Modelling of rotational losses for magnetic steel sheets through micromagnetism

Ducevic, A., Roppert, K., Kaltenbacher, M. & Suess, D., 1 Sept 2023, Joint European Magnetic Symposia - Book of Abstracts.

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

Model order reduction techniques for linear differential-algebraic equations applied to semi-discretized eddy current model

Kvasnicka, S., Roppert, K., Riener, C., Bauernfeind, T. & Kaltenbacher, M., 26 Apr 2023, (E-pub ahead of print) 2022 IEEE 20th Biennial Conference on Electromagnetic Field Computation-Long Papers, CEFC-LONG 2022 - Proceedings. ACM/IEEE, p. 1-4 4 p. 10107548

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

Model Reduction of Linear Differential-Algebraic Equation Systems Using Constructed Spectral Projectors

Kvasnicka, S., Roppert, K. & Kaltenbacher, M., 1 May 2023, In: IEEE Transactions on Magnetics. 59, 5, 7001404.

Research output: Contribution to journal › Article › peer-review

Open Access

File

openCFS-Data: Data Pre-Post-Processing Tool for openCFS

Schoder, S. & Roppert, K., 7 Feb 2023.

Research output: Working paper › Preprint

File

The Method of Harmonic Balance for Network-Based Transformer Models

Sauseng, A., Roppert, K., Reinbacher-Köstinger, A., Hamberger, P. & Kaltenbacher, M., 12 Sept 2023.

Research output: Contribution to conference › Poster › peer-review

2022

Adaptions of the Energy-Based Hysteresis Model for correct Rotational Losses

Sauseng, A., Domenig, L., Roppert, K. & Kaltenbacher, M., 14 Nov 2022, CEFC 2022 - 20th Biennial IEEE Conference on Electromagnetic Field Computation, Proceedings. Institute of Electrical and Electronics Engineers

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

An Efficient and Robust Quasi-Newton Method for 3D Magnetic Vector Hysteresis using the Reduced Magnetic Scalar Potential

Domenig, L. D., Sauseng, A., Roppert, K., Gschwentner, A. & Kaltenbacher, M., 18 Sept 2022, Book of Abstracts: 20th International IGTE Symposium 2022 on Computational Methods in Electromagnetics and Multiphysics. 1 p.

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

Comparing Two Topology Transformer Hysteresis Models with Power Transformer Measurements

Albert, D., Domenig, L., Maletic, D., Reinbacher-Köstinger, A., Roppert, K. & Renner, H., 21 Jul 2022, 2022 23rd International Conference on the Computation of Electromagnetic Fields (COMPUMAG). ACM/IEEE, p. 1-4 4 p. 9827499

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

Comparison of Energy Based Hysteresis Models

Kaltenbacher, M., Roppert, K., Domenig, L. D. & Egger, H., 2022, 2022 23rd International Conference on the Computation of Electromagnetic Fields, COMPUMAG 2022. Institute of Electrical and Electronics Engineers, 4 p. (2022 23rd International Conference on the Computation of Electromagnetic Fields, COMPUMAG 2022).

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

Computation of Torque using different non-conforming Interface Techniques

Gschwentner, A., Roppert, K. & Kaltenbacher, M., 14 Nov 2022.

Research output: Contribution to conference › Abstract › peer-review

Computation of Torque using different non-conforming Interface Techniques

Gschwentner, A., Roppert, K. & Kaltenbacher, M., 2022, CEFC 2022 - 20th Biennial IEEE Conference on Electromagnetic Field Computation, Proceedings. (CEFC 2022 - 20th Biennial IEEE Conference on Electromagnetic Field Computation, Proceedings).

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

Open Access

Error detection and filtering of incompressible flow simulations for aeroacoustic predictions of human voice

Schoder, S., Kraxberger, F., Falk, S., Wurzinger, A., Roppert, K., Kniesburges, S., Döllinger, M. & Kaltenbacher, M., 1 Sept 2022, In: The Journal of the Acoustical Society of America. 152, 3, p. 1425-1436 12 p.

Research output: Contribution to journal › Article › peer-review

Open Access

Investigating voltage excitation of the Darwin model via the prescription of terminal scalar potentials

Roppert, K., Kvasnicka, S., Riener, C. M., Bauernfeind, T. & Kaltenbacher, M., 1 Sept 2022, In: IEEE Transactions on Magnetics. 58, 9, 4 p., 7001104.

Research output: Contribution to journal › Conference article › peer-review

Open Access

Learning Expertise Actively to model Domain knowledge (LEAD) with application to human phonation

Schoder, S. & Roppert, K., 2022, (Submitted). 9 p.

Research output: Contribution to conference › Abstract › peer-review

Material modeling of DC-biased SMT ferrite beads for EMI filters

Riener, C. M., Bauernfeind, T., Kvasnicka, S., Roppert, K. & Kaltenbacher, M., 2022, (Accepted/In press) The 20th International IGTE Symposium on Computational Methods in Electromagnetics and Multiphysics - Abstracts.

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

Model order reduction techniques for linear differential-algebraic equations applied to semi-discretized eddy current model

Kvasnicka, S., Roppert, K., Riener, C. M., Bauernfeind, T. & Kaltenbacher, M., 24 Oct 2022. 1 p.

Research output: Contribution to conference › Poster › peer-review

Model order reduction techniques for linear differential-algebraic equations applied to semi-discretized eddy current model

Kvasnicka, S., Roppert, K., Riener, C. M., Bauernfeind, T. & Kaltenbacher, M., 2022, 2022 IEEE 20th Biennial Conference on Electromagnetic Field Computation (CEFC). 2 p.

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

Model reduction of differential-algebraic equation systems using constructed spectral projectors

Kvasnicka, S., Roppert, K. & Kaltenbacher, M., 2022, 2022 IEEE 20th Biennial Conference on Electromagnetic Field Computation (CEFC). 2 p.

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

Model Reduction of Differential-algebraic Equation systems Using Constructed Spectral Projectors

Kvasnicka, S., Roppert, K. & Kaltenbacher, M., 25 Oct 2022. 1 p.

Research output: Contribution to conference › Poster › peer-review

Model reduction of linear eddy current problems using differential-algebraic equation systems

Kvasnicka, S., Riener, C. M., Roppert, K., Bauernfeind, T. & Kaltenbacher, M., Sept 2022. 1 p.

Research output: Contribution to conference › Poster

Model reduction of linear eddy current problems using differential-algebraic equation systems

Kvasnicka, S., Roppert, K., Riener, C. M., Bauernfeind, T. & Kaltenbacher, M., 2022, The 20th International IGTE Symposium on Computational Methods in Electromagnetics and Multiphysics - Abstracts. 1 p.

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

Numerical Investigation of Signal Launch Imperfections for Edge Mount RF Connectors

Riener, C. M., Bauernfeind, T., Kvasnicka, S., Roppert, K., Hackl, H. & Kaltenbacher, M., 1 Jul 2022, In: Electronics. 11, 13, 1990.

Research output: Contribution to journal › Article › peer-review

Open Access

File

Numerical investigations of tapering strategies for coaxial to microstrip line interfaces

Kolm, M., Riener, C. M., Kvasnicka, S., Roppert, K., Hackl, H. & Bauernfeind, T., 2022, (Accepted/In press) The 20th International IGTE Symposium on Computational Methods in Electromagnetics and Multiphysics - Abstracts. p. 56

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

openCFS: Open Source Finite Element Software for Coupled Field Simulation -- Part Acoustics

Schoder, S. & Roppert, K., 10 Jul 2022.

Research output: Working paper › Preprint

File

Predicting Spatial Distributions of Lighthill's Aeroacoustic Source Terms Using Steady-State RANS Simulations in Turbocharger Compressors

Freidhager, C., Maurerlehner, P., Roppert, K., Heinisch, M., Renz, A., Schoder, S. & Kaltenbacher, M., 1 Jan 2022, In: Journal of Aerospace Engineering. 35, 1, 14 p., 04021101.

Research output: Contribution to journal › Article › peer-review

Torque Computation using different non-conforming Interface Techniques

Gschwentner, A., Roppert, K. & Kaltenbacher, M., 18 Sept 2022.

Research output: Contribution to conference › Abstract › peer-review

2021

3D Modelling of Inductive and Capacitive Coupling Between Surface-Mounted Multi-Layer-Capacitors

Riener, C. M., Bauernfeind, T., Baumgartner, P., Hackl, H., Ibel, M. G., Kvasnicka, S., Prestros, R., Roppert, K. & Kaltenbacher, M., Jul 2021, Selected Abstracts of the 12th International Symposium on Electric and Magnetic Fields.

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

Aero-vibroacoustic formulation based on the perturbed convective wave equation

Schoder, S., Freidhager, C., Maurerlehner, P., Roppert, K. & Kaltenbacher, M., 2021.

Research output: Contribution to conference › Abstract

Application limits of conservative source interpolation methods using a low Mach number hybrid aeroacoustic workflow

Schoder, S., Wurzinger, A., Junger, C., Weitz, M., Freidhager, C., Roppert, K. & Kaltenbacher, M., Mar 2021, In: Journal of Theoretical and Computational Acoustics. 29, 1, 2050032.

Research output: Contribution to journal › Article › peer-review

Open Access

Application of FFT-PEEC Method to Grounded Coplanar Waveguide Structures and Surface Mounted Multi-Layer Ceramic Capacitors

Riener, C. M., Bauernfeind, T., Torchio, R., Roppert, K., Kvasnicka, S., Baumgartner, P. & Kaltenbacher, M., 2021, Proceedings of the 23rd International Conference on the Computation of Electromagnetic Fields.

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

Flexible Discretization for Computational Aeroacoustics

Kaltenbacher, M., Heinz, J., Roppert, K. & Schoder, S., 2021. 11 p.

Research output: Contribution to conference › Paper

Open Access

openCFS-Acoustics: Open Source Finite Element Software for Acoustic Simulations

Schoder, S., Roppert, K., Freidhager, C., Maurerlehner, P., Heinz, J., Mayrhofer, D., Floss, S., Toth, F. & Kaltenbacher, M., 2021.

Research output: Contribution to conference › Abstract

Simulationen von Strömungsakustik in rotierenden Bauteilen zur Entwicklung von Antriebskonzepten der Autos der Zukunft

Translated title of the contribution: Aeroacoustic simulations applied to rotating components of future power units of carsFreidhager, C., Maurerlehner, P., Roppert, K., Wurzinger, A., Hauser, A., Heinisch, M., Schoder, S. & Kaltenbacher, M., Jun 2021, In: Elektrotechnik und Informationstechnik. 138, 3, p. 212-218 7 p.

Research output: Contribution to journal › Article › peer-review

Open Access