Analysis of eddy-current brakes for high speed railway

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.