Patent ID: 6794838
Filing Date: 2004-09-21
Classification: B60L,B60M,Y02T

Abstract:
A method of regulating the power demanded by a rail motor including current collector means cooperating with a catenary supplied with direct current power by power supply substations distributed along a track, which method includes the steps of:measuring a catenary voltage Vcat at said rail motor; measuring a catenary current Icat at said rail motor; evaluating a no-load voltage Vcat0 of the substation supplying power to the catenary to which the rail motor is connected; evaluating the maximum power available to said catenary from the equation: P&it;â€ƒ&it;max=(Vcat0)24*Rwhere R is the resistance of said catenary calculated from the equation: R=(Vcat0-Vcat)Icat;andlimiting the power demanded by said rail motor to a power limit Plim less than or equal to the calculated maximum power Pmax.