People
Iryna Kulchytska-Ruchka
K

Dr-Ing. Iryna Kulchytska-Ruchka

Working area(s)

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

Contact

work +49 6151 16-24379

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.

  • 2021: Junior membership of GAMM (Association of Applied Mathematics and Mechanics) for outstanding achievements in diploma and/or doctoral theses in the field of applied mathematics or mechanics.
  • 2018: 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)

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