An efficient domain decomposition method for 3-D finite element analysis of nonlinear electric machine problems

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The dual-primal finite element tearing and interconnecting (FETI-DP) method is combined with the Newton-Raphson method to expand the capability and improve the efficiency of three-dimensional finite element analysis (FEA) of nonlinear electromechanical and electric machine problems. Despite its modeling capability and high degree of accuracy, FEA has high computational complexity, especially for nonlinear analysis. The FETI-DP method is a robust domain decomposition method, which is a suitable choice for improving the efficiency of large-scale 3-D nonlinear FEA. The FETI-DP method decomposes the original large-scale problem into multiple subdomains, which can then be handled by parallel computing techniques so that the total computation time is reduced significantly. Linear and nonlinear regions are separated using the FETI-DP method. This further improves simulation efficiency and flexibility. Cubic splines and relaxation techniques are adopted to ensure stable and fast convergence of the Newton-Raphson method.

Original languageEnglish (US)
Title of host publicationProceedings of the 2013 IEEE International Electric Machines and Drives Conference, IEMDC 2013
Pages709-715
Number of pages7
DOIs
StatePublished - Aug 22 2013
Event2013 IEEE International Electric Machines and Drives Conference, IEMDC 2013 - Chicago, IL, United States
Duration: May 12 2013May 15 2013

Publication series

NameProceedings of the 2013 IEEE International Electric Machines and Drives Conference, IEMDC 2013

Other

Other2013 IEEE International Electric Machines and Drives Conference, IEMDC 2013
CountryUnited States
CityChicago, IL
Period5/12/135/15/13

Keywords

  • Finite element methods
  • domain decomposition
  • electric machines
  • nonlinear problems

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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