Application of automatic choice of step size for time stepping finite element method to induction motors

Siu Lau Ho, Weinong Fu, H. C. Wong

Research output: Journal article publicationJournal articleAcademic researchpeer-review

29 Citations (Scopus)

Abstract

Although the time stepping finite element method (FEM) is a powerful tool to simulate the operation of electrical machines, it has not been applied to practical problems widely because it requires a large amount of CPU time. This paper proposes to control the time step size automatically within the program to save the computing time substantially. It will be shown that only simple formulae for estimating the local truncation errors at each time step using Backward Euler's method or Crank-Nicolson's method are all that required to be derived. These formulae require no extra complicated computation. Hence the reported algorithm can be extended easily to many finite element investigations to make FEM a practical tool to industrial problems. The strategy in choosing the optimal step size is described. The proposed algorithm is used to study the transient behaviour of an induction motor.
Original languageEnglish
Pages (from-to)1370-1373
Number of pages4
JournalIEEE Transactions on Magnetics
Volume33
Issue number2 PART 2
Publication statusPublished - 1 Dec 1997

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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