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Iryna Kulchytska-Ruchka M.Sc.

Working area(s)

Multi-rate time-integration combined with domain decomposition of electric-machine simulation

Contact

work +49 6151 16-24379
fax +49 6151 16-24027

Work S2|17 38
Schlossgartenstr. 8
64289 Darmstadt

As a result of the German energy transition ("Energiewende"), efficient and robust designs of electromechanical energy converters, in particular electrical machines, are becoming increasingly important, whether as drives or components in the automotive industry, in industrial automation or in household appliances. Research about this topic is part of the BMBF PASIROM project and deals with modeling, simulation and robust optimization of electrical machines. Particularly the efficient time-parallel simulation of the models, e.g. using the Parareal approach, is investigated. Parallelization in the time domain is of a particular interest especially in the cases when electric motors are supplied with a pulse-width modulated voltage of a high frequency, e.g., of a couple of tens of kHz. This leads to problems which involve discontinuous right-hand sides and requires special techniques for their numerical solution. A novel Parareal algorithm, based on a reduction of the coarse dynamics by using a smooth low-frequency excitation, has been recently introduced. Its convergence analysis and application to an induction machine model shows efficiency of the approach for the real-life demands in electrical engineering.

Best Oral Presentation Award presented to Iryna Kulchytska for her talk “A New Parareal Algorithm for Problems with Discontinuous Sources” at the 7th Workshop on Parallel-in-Time methods (PinT 2018)

4933 915B D0F6 0DD0 5CD9  9847 9E9C 0B87 5B15 6E0D

2020

Idoia Cortes Garcia ; Iryna Kulchytska-Ruchka ; Sebastian Schöps (2020):
Efficient Simulation of Field/Circuit Coupled Systems with Parallelised Waveform Relaxation.
In: IEEE Transactions on Magnetics, 56, (2), pp. 1–4, ISSN: 0018-9464, DOI: 10.1109/TMAG.2019.2952695, arXiv: 1909.08895. [Article]

Denys Bast ; Iryna Kulchytska-Ruchka ; Sebastian Schöps ; Oliver Rain (2020):
Accelerated Steady-State Torque Computation for Induction Machines using Parallel-In-Time Algorithms.
In: IEEE Transactions on Magnetics, 56, (2), pp. 1–9, ISSN: 0018-9464, DOI: 10.1109/TMAG.2019.2945510, arXiv: 1902.08277. [Article]

2019

Iryna Kulchytska-Ruchka ; Herbert De Gersem ; Sebastian Schöps (2019):
Periodic Parareal with multi-harmonic coarse grid correction.
In: VIII Workshop on Parallel in Time Methods PinT 2019, Bielefeld, Germany. URL: https://parallel-in-time.org/events/8th-pint-workshop/. [Talk]

Iryna Kulchytska-Ruchka ; Sebastian Schöps (2019):
Accelerated Steady-State Solution of the Eddy Current Problem via Parallelization in Time Domain.
In: Workshop on Advances in Electromagnetic Research – KWT 2019, Rietzlern, Austria. URL: http://maxwell-in-motion.org. [Poster]

Iryna Kulchytska-Ruchka ; Herbert De Gersem ; Sebastian Schöps (2019):
An efficient steady-state analysis of the eddy current problem using a parallel-in-time algorithm.
In: The Tenth International Conference on Computational Electromagnetics (CEM 2019), Edinburgh, UK. URL: https://events.theiet.org/cem/. [Poster]

Iryna Kulchytska-Ruchka ; Idoia Cortes Garcia ; Herbert De Gersem ; Sebastian Schöps (2019):
Parallel Methods for Coupled Differential Algebraic Equations.
In: 9th Descriptor Workshop 2019, Paderborn. URL: https://www.mpi-magdeburg.mpg.de/de/descriptor2019. [Talk]

Iryna Kulchytska-Ruchka ; Herbert De Gersem ; Sebastian Schöps (2019):
An efficient steady-state analysis of the eddy current problem using a parallel-in-time algorithm.
In: The Tenth International Conference on Computational Electromagnetics (CEM 2019). ISBN: 978-1-83953-066-1, DOI: 10.1049/cp.2019.0113, arXiv: 1905.13076. [In Proceedings]

Iryna Kulchytska-Ruchka ; Idoia Cortes Garcia ; Sebastian Schöps (2019):
Multirate Parareal with Application in Electrical Engineering.
In: SIAM Conference on Computational Science and Engineering (CSE) 2019, Spokane, Washington, USA. URL: https://www.siam.org/conferences/CM/Main/cse19. [Talk]

Martin J. Gander ; Iryna Kulchytska-Ruchka ; Innocent Niyonzima ; Sebastian Schöps (2019):
A New Parareal Algorithm for Problems with Discontinuous Sources.
In: SIAM Journal on Scientific Computing, 41, (2), pp. B375–B395, ISSN: 1064-8275, DOI: 10.1137/18M1175653, arXiv: 1803.05503. [Article]

Martin J. Gander ; Iryna Kulchytska-Ruchka ; Sebastian Schöps (2019):
A New Parareal Algorithm for Time-Periodic Problems with Discontinuous Inputs.
In: Domain Decomposition Methods in Science and Engineering XXV, Lecture Notes in Computational Science and Engineering. Springer. arXiv: 1810.12372. [In Proceedings]

Stephanie Friedhoff ; Jens Hahne ; Iryna Kulchytska-Ruchka ; Sebastian Schöps (2019):
Exploring Parallel-in-Time Approaches for Eddy Current Problems.
In: Progress in Industrial Mathematics at ECMI 2018, volume 30 of The European Consortium for Mathematics in Industry, 373–379. Springer. ISBN: 9783030275495, DOI: 10.1007/978-3-030-27550-1_47, arXiv: 1810.13263. [In Proceedings]

Idoia Cortes Garcia ; Iryna Kulchytska-Ruchka ; Sebastian Schöps (2019):
Efficient Simulation of Field/Circuit Coupled Systems with Parallelised Waveform Relaxation.
In: 22nd Conference on the Computation of Electromagnetic Fields (COMPUMAG 2019), Paris, France. International Compumag Society. [Poster]

Idoia Cortes Garcia ; Iryna Kulchytska-Ruchka ; Sebastian Schöps (2019):
Parallel-in-time methods for field/circuit coupled differential algebraic equations.
In: International Conference on Scientific Computation and Differential Equations (SciCADE) 2019, Innsbruck, Austria. URL: https://scicade2019.uibk.ac.at. [Talk]

2018

Iryna Kulchytska-Ruchka ; Melina Merkel ; Sebastian Schöps (2018):
Parallel-In-Time Methods for the Computation of Electromagnetic Fields.
In: Mathematisches Kolloquium der Bergischen Universität Wuppertal, Wuppertal. [Talk]

Iryna Kulchytska-Ruchka ; Sebastian Schöps (2018):
Parallel-in-time Simulation of Electric Machines, Excited with PWM-Signal.
In: Workshop on Advances in Electromagnetic Research – KWT 2018, Rietzlern, Austria. URL: http://maxwell-in-motion.org. [Poster]

Iryna Kulchytska-Ruchka ; Sebastian Schöps ; Martin J. Gander ; Innocent Niyonzima (2018):
Parallel-in-time solution of the time-periodic eddy current problem with discontinuous excitation.
In: International Conference on Domain Decomposition Methods DD25, St. John's, Canada. URL: https://dd25.math.mun.ca. [Talk]

Iryna Kulchytska-Ruchka ; Sebastian Schöps ; Martin J. Gander ; Innocent Niyonzima (2018):
Convergence analysis of Parareal for systems with discontinuous inputs.
In: 20th European Conference on Mathematics for Industry (ECMI 2018), Budapest, Hungary. URL: http://ecmi.bolyai.hu. [Talk]

Iryna Kulchytska-Ruchka ; Martin J. Gander ; Sebastian Schöps ; Innocent Niyonzima (2018):
A New Parareal Algorithm for Problems with Discontinuous Sources.
In: VII Workshop on Parallel in Time Methods PinT 2018, Roscoff, France. URL: http://www.math.univ-paris13.fr/~japhet/PINT/PINT2018_schedule.htm. [Talk]

Iryna Kulchytska-Ruchka ; Sebastian Schöps ; Herbert De Gersem (2018):
A spectral coarse solver for the parallel-in-time solution of the eddy current problem.
In: SIAM Conference on Parallel Processing for Scientific Computing, Tokyo, Japan. URL: https://www.siam.org/meetings/pp18. [Talk]

Stephanie Friedhoff ; Jens Hahne ; Iryna Kulchytska-Ruchka ; Sebastian Schöps (2018):
Exploring Parallel-in-Time Approaches for Eddy Current Problems.
In: 20th European Conference on Mathematics for Industry (ECMI 2018), Budapest, Hungary. URL: http://ecmi.bolyai.hu. [Talk]

Idoia Cortes Garcia ; Iryna Kulchytska-Ruchka ; Sebastian Schöps (2018):
Parallelised Waveform Relaxation for Field/Circuit Coupled Systems.
In: Numdiff-15, Halle. URL: https://sim.mathematik.uni-halle.de/numdiff/Numdiff15/. [Talk]

Idoia Cortes Garcia ; Herbert De Gersem ; Peter Förster ; Iryna Kulchytska-Ruchka ; Artem Moskalew ; Frederik Quetscher ; Sebastian Schöps (2018):
Time parallelised Waveform Relaxation for Field/Circuit Coupled Systems.
In: 5th STEAM Collaboration Meeting, CERN, Geneva. URL: https://indico.cern.ch/event/731743/. [Talk]

2017

Iryna Kulchytska-Ruchka ; Sebastian Schöps ; Herbert De Gersem (2017):
Time-parallel solution of the time-periodic eddy current problem.
In: 6th Workshop on Parallel-in-Time methods, Monte Verità, Switzerland. URL: https://www.ics.usi.ch/index.php/6th-workshop-on-parallel-in-time-methods. [Talk]

Iryna Kulchytska-Ruchka ; Herbert De Gersem ; Sebastian Schöps (2017):
Time-parallel solution of the time-periodic eddy current problem.
In: 4th International Conference on Computational Engineering (ICCE 2017), Darmstadt, Germany. [Talk]

Iryna Kulchytska-Ruchka ; Sebastian Schöps ; Herbert De Gersem (2017):
Time-parallel solution of the time-periodic eddy current problem.
In: Workshop on Advances in Electromagnetic Research – KWT 2017, Rietzlern, Austria. URL: http://maxwell-in-motion.org. [Talk]

Iryna Kulchytska-Ruchka ; Sebastian Schöps ; Herbert De Gersem (2017):
Time-parallel solution of the time-periodic eddy current problem.
In: International Conference on Scientific Computation and Differential Equations (SciCADE 2017), Bath, United Kingdom. [Talk]