Memory efficient harmonic method for electromagnetic models using scattering matrices

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

In design and optimization of electrical machines, accurate models of the electromagnetic fields are important to predict the performance of the machine. The finite element method (FEM) is often used, because of its ability to produce accurate results when it is correctly utilized. However, the method can be demanding in terms of memory and relatively slow in terms of computation time. Therefore, semi-analytical models have been proposed over the years for increasingly complex structures in both 2D and 3D. One of the semi-analytical models is the harmonic modeling technique [1], [2], [3], which uses a Fourier bases to describe the solutions to electromagnetic field quantities. In many electromagnetic configurations, accurate results are obtained using a relatively low number of harmonics. However, for more complex structures, the number of harmonics has to be increased to retain accuracy. This leads to a proportional increase in the required memory. As a result, especially in 3D models, the advantage in terms of memory of the harmonic model in comparison to FEM is reducing. In this paper an alternative solving method for 3D harmonic models with position dependent material properties is presented. Using the scattering matrix approach, the memory required to obtain the solutions of the model is significantly reduced.
LanguageEnglish
Title of host publicationProceedings of the International Magnetics Conference (INTERMAG 2018)
Place of PublicationPiscataway
PublisherInstitute of Electrical and Electronics Engineers
Number of pages1
ISBN (Electronic)978-1-5386-6425-4
DOIs
StatePublished - 2018
Event2018 IEEE International Magnetics Conference (INTERMAG 2018) - Marina Bay Sands Convention Center, Singapore, Singapore, Singapore
Duration: 23 Apr 201827 Apr 2018
http://www.intermag2018.com/

Conference

Conference2018 IEEE International Magnetics Conference (INTERMAG 2018)
Abbreviated titleINTERMAG 2018
CountrySingapore
CitySingapore
Period23/04/1827/04/18
Internet address

Fingerprint

Scattering
Data storage equipment
Electromagnetic fields
Analytical models
Finite element method
Materials properties

Cite this

Custers, C. H. H. M., Jansen, J. W., & Lomonova, E. A. (2018). Memory efficient harmonic method for electromagnetic models using scattering matrices. In Proceedings of the International Magnetics Conference (INTERMAG 2018) [8508761] Piscataway: Institute of Electrical and Electronics Engineers. DOI: 10.1109/INTMAG.2018.8508761
Custers, C.H.H.M. ; Jansen, J.W. ; Lomonova, E.A./ Memory efficient harmonic method for electromagnetic models using scattering matrices. Proceedings of the International Magnetics Conference (INTERMAG 2018). Piscataway : Institute of Electrical and Electronics Engineers, 2018.
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Custers, CHHM, Jansen, JW & Lomonova, EA 2018, Memory efficient harmonic method for electromagnetic models using scattering matrices. in Proceedings of the International Magnetics Conference (INTERMAG 2018)., 8508761, Institute of Electrical and Electronics Engineers, Piscataway, 2018 IEEE International Magnetics Conference (INTERMAG 2018), Singapore, Singapore, 23/04/18. DOI: 10.1109/INTMAG.2018.8508761

Memory efficient harmonic method for electromagnetic models using scattering matrices. / Custers, C.H.H.M.; Jansen, J.W.; Lomonova, E.A.

Proceedings of the International Magnetics Conference (INTERMAG 2018). Piscataway : Institute of Electrical and Electronics Engineers, 2018. 8508761.

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

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N2 - In design and optimization of electrical machines, accurate models of the electromagnetic fields are important to predict the performance of the machine. The finite element method (FEM) is often used, because of its ability to produce accurate results when it is correctly utilized. However, the method can be demanding in terms of memory and relatively slow in terms of computation time. Therefore, semi-analytical models have been proposed over the years for increasingly complex structures in both 2D and 3D. One of the semi-analytical models is the harmonic modeling technique [1], [2], [3], which uses a Fourier bases to describe the solutions to electromagnetic field quantities. In many electromagnetic configurations, accurate results are obtained using a relatively low number of harmonics. However, for more complex structures, the number of harmonics has to be increased to retain accuracy. This leads to a proportional increase in the required memory. As a result, especially in 3D models, the advantage in terms of memory of the harmonic model in comparison to FEM is reducing. In this paper an alternative solving method for 3D harmonic models with position dependent material properties is presented. Using the scattering matrix approach, the memory required to obtain the solutions of the model is significantly reduced.

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Custers CHHM, Jansen JW, Lomonova EA. Memory efficient harmonic method for electromagnetic models using scattering matrices. In Proceedings of the International Magnetics Conference (INTERMAG 2018). Piscataway: Institute of Electrical and Electronics Engineers. 2018. 8508761. Available from, DOI: 10.1109/INTMAG.2018.8508761