Open AccessOptimum Design of Coil Disc Magnetic Field of Rapid Repulsion Mechanism
Author(s) -
Yang Liu,
Cheng Xu,
Hongwei Zhao
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/371/5/052039
Subject(s) - electromagnetic coil , electrical conductor , eddy current , mechanics , magnetic circuit , magnetic field , finite element method , materials science , saturation (graph theory) , mechanism (biology) , mechanical engineering , electrical engineering , nuclear magnetic resonance , physics , engineering , composite material , structural engineering , mathematics , quantum mechanics , combinatorics
The electromagnetic repulsion mechanism (ERM) based on the principle of eddy current repulsion has been widely applied in DC circuit breakers, but its energy conversion efficiency is low. In order to design a high-efficiency ERM, this paper establishes a simulation model of the ERM with double coil structure by the finite element analysis method. The coil disc skeleton is analyzed and optimized from the aspects of magnetic conductive material and structure. The problems of magnetic saturation and power loss are avoided, and the optimum design parameters of magnetic conductive components of coil disc are obtained. The simulation results show that the magnetic conductive material should be made of silicon steel sheet and designed into an E-2 type. Compared with the hollow double-coil repulsion mechanism, the electromagnetic repulsion peak value increases by 10.6%, the maximum opening speed increases by 25.3%, and the driving efficiency increases by 41.6%. The travel distance of 12mm can move within 1.8ms, providing a reference for the design of high-speed and high-efficiency ERM.