MGRIT-Based Multi-Level Parallel-in-Time Electromagnetic Transient Simulation

Julius Strake (), Daniel Döhring and Andrea Benigni
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Julius Strake: Institut für Energie- und Klimaforschung (IEK), Energiesystemtechnik (IEK-10), Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany
Daniel Döhring: Institut für Energie- und Klimaforschung (IEK), Energiesystemtechnik (IEK-10), Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany
Andrea Benigni: Institut für Energie- und Klimaforschung (IEK), Energiesystemtechnik (IEK-10), Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany

Energies, 2022, vol. 15, issue 21, 1-16

Abstract: In this paper, we present an approach for multi-level parallel-in-time (PinT) electromagnetic transient (EMT) simulation. We evaluate the approach in the context of power electronics system-level simulation. While PinT approaches to power electronics simulations based on two-level algorithms have been thoroughly explored in the past, multi-level PinT approaches have not yet been investigated. We use the multigrid-reduction-in-time (MGRIT) method to parallelize a dedicated EMT simulation tool which is capable of switching between different converter models as it operates. The presented approach yields a time-parallel speed-up of up to 10 times compared to the sequential-in-time implementation. We also show that special care has to be taken to synchronize the time grids with the electronic components’ switching periods, indicating that further research into the usage of different models from adequate model hierarchies is necessary.

Keywords: multi-level; parallel-in-time; MGRIT; simulation; power electronics (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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