Patent Number: 6,794,838

Title: Method and system for regulating the power demanded by a rail motor

Abstract: A method of regulating the power demanded by a rail motor including a current collector system cooperating with a catenary supplied with direct current power by power supply substations distributed along the track includes the steps of: measuring the catenary voltage Vcat at the rail motor, measuring the catenary current Icat at the rail motor, evaluating the no-load voltage Vcat.sub.0 of the substation supplying power to the catenary to which the rail motor is connected, evaluating the maximum power available to the catenary from the equation: ##EQU1## where R is the resistance of the catenary, and limiting the power demanded by the rail motor to a power limit Plim less than or equal to the calculated maximum power Pmax.

Inventors: Debard; Jean-Michel (Le Garon, FR), Liu; Rong-Fan (Rabelais, FR)

Assignee: Alstom

International Classification: B60L 15/10 (20060101); B60M 3/00 (20060101); B60M 3/02 (20060101); B60L 15/00 (20060101); H02K 017/32 ()

Expiration Date: 09/21/2021