Title :
Analysis of eddy-current brakes for high speed railway
Author :
Wang, P.J. ; Chiueh, S.J.
Author_Institution :
Dept. of Power Mech. Eng., Nat. Tsing Hua Univ., Hsinchu, Taiwan
fDate :
7/1/1998 12:00:00 AM
Abstract :
The analysis of eddy-current brakes for a high-speed railway is described that shows the operational characteristics of the brake as function of the train speed up to 300 km/hr and of the DC magnetizing current of magnetic poles. Braking forces are generated by employing a DC excitation field for the poles moving 7 mm above the rails. Results from the Fourier series method and the finite difference method are compared for showing the attraction and braking forces between the rails and the poles. The nonlinear B-H curve described by the Frohlich form is assumed for the rail. The calculated operating curves are compared to the published experimental data and also those measured in-house
Keywords :
Fourier series; eddy current braking; electromagnetic induction; finite difference methods; force; magnetisation; railways; 300 km/h; 7 mm; DC excitation field; DC magnetizing current; Fourier series method; Frohlich form; attraction forces; braking forces; eddy-current brakes; finite difference method; high-speed electric railway; magnetic poles; nonlinear B-H curve; operating curves; operational characteristics; train speed; Adhesives; Air gaps; Boundary conditions; Finite difference methods; Fourier series; Magnetic analysis; Magnetic flux; Rail transportation; Saturation magnetization; Wheels;
Journal_Title :
Magnetics, IEEE Transactions on
