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

Energies, vol. 15, pp. 7874

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.

Authors 3

1. Julius Strake corresponding Aachen Faculty 4—Mechanical Engineering

   RWTH Aachen University · Forschungszentrum Jülich

   Affiliation as printed

   Faculty 4—Mechanical Engineering, RWTH Aachen University, 52056 Aachen, Germany

   Institut für Energie- und Klimaforschung (IEK), Energiesystemtechnik (IEK-10), Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany

2. Daniel Doehring

   Forschungszentrum Jülich

   Affiliation as printed

   Institut für Energie- und Klimaforschung (IEK), Energiesystemtechnik (IEK-10), Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany

3. Andrea Benigni Aachen Faculty 4—Mechanical Engineering

   RWTH Aachen University · Forschungszentrum Jülich · Jülich Aachen Research Alliance

   Affiliation as printed

   Faculty 4—Mechanical Engineering, RWTH Aachen University, 52056 Aachen, Germany

   Institut für Energie- und Klimaforschung (IEK), Energiesystemtechnik (IEK-10), Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany

   JARA-Office Jülich, Wilhelm-Johnen-Straße, 52425 Jülich, Germany