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Analytical Model for a Permanent Magnet Eddy-Current Brake with Transverse Edge Effect

  • School of Electrical Engineering and Automation, Harbin Institute of Technology
  • Heilongjiang University

Research output: Contribution to journalArticlepeer-review

Abstract

In this paper, the analytical model of a permanent magnet (PM) linear eddy current brake is presented with consideration of transverse edge effects. The transverse edge effects can be divided into static and dynamic effects. The static transverse edge effect is caused by the diffusion of the magnetic flux in the core edge, and the dynamic transverse edge effect is caused by the paths of the eddy currents in the conductor plate. First, the structure and working principle of the eddy current brake are described. Next, the static air gap magnetic flux of the eddy current brake with the static transverse edge effect is analyzed using a multilayer analysis model and conformal mapping method. The braking force of the eddy current brake is then calculated while taking the dynamic transverse edge effect into consideration. Finally, the validity of the analytical model is verified by 3D finite element method (FEM).

Original languageEnglish
Article number8710228
Pages (from-to)61170-61179
Number of pages10
JournalIEEE Access
Volume7
DOIs
StatePublished - 2019

Keywords

  • 3D FEM
  • Analytical model
  • eddy current brake
  • transverse edge effect

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