Poster

PUBDB-2025-01500

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Harmonic Balance Finite Element Method Combined With a Homogenization of Laminated Yokes

Christmann, J.-M. (Corresponding author) ; D'Angelo, L. A. M. ; De Gersem, H. ; Pfeiffer, S.DESY* ; Mirza, S. H.DESY* ; Thede, M.DESY* ; Aloev, A.DESY* ; Schlarb, H.DESY*

2025

Abstract: The magnetoquasistatic simulation of laminated ferromagnetic structures at elevated frequencies is a challenging task, which quickly becomes impossible for three-dimensional models, especially if a nonlinear magnetization curve must be considered. In this contribution, we show how existing homogenization techniques for the linear case can be combined with the harmonic balance finite element method, to also account for the nonlinearity of the magnetization curve. This leads to a method which does not necessitate resolving the individual laminations with the finite element mesh and avoids time-stepping, thus allowing us to conduct nonlinear eddy current simulations of large three-dimensional models at frequencies in the kilohertz range efficiently. In particular, we demonstrate the usefulness of this new approach for simulating fast orbit corrector magnets in particle accelerators.

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Contributing Institute(s):

1. Strahlkontrollen (MSK)
2. Technische Projektierung (MEA1)

Research Program(s):

1. 621 - Accelerator Research and Development (POF4-621) (POF4-621)

Experiment(s):

1. (PETRA IV)

Appears in the scientific report 2025

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