Improvement of convergence characteristic in nonlinear transient eddy-current analyses using the error correction of time integration based on the time-periodic FEM and the EEC method

Yasuhito Takahashi, Tadashi Tokumasu, Masafumi Fujita, Shinji Wakao, Takeshi Iwashita, Masanori Kanazawa

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

This paper proposes novel techniques for the improvement of the convergence characteristic of step-by-step time integrations in nonlinear transient eddy-current analyses. The proposed methods, which are based on the time-periodic finite-element method and the explicit error correction method, can extract poorly-converged error components corresponding to large time constants of an analyzed system. The correction of the extracted error components accelerates the convergence of transient calculation efficiently. Furthermore, we extend the performance of the proposed methods in nonlinear problems. Some numerical results that verify the effectiveness of the proposed methods are also presented.

Original languageEnglish
Pages (from-to)7+791-798
JournalIEEJ Transactions on Power and Energy
Volume129
Issue number6
Publication statusPublished - 2009 Jul 30

Keywords

  • Eddy current
  • Explicit error correction method
  • Nonlinear analysis
  • Time integration method
  • Time-periodic finite-element method

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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