Patent ID: 7397149
Filing Date: 2008-07-08
Classification: B60L,B60M,Y02T

Abstract:
1. A method or monitoring and regulating power and energy consumed by a transport system comprising electrically propelled vehicles and a power supply system comprising one or more power supply substations connected to an external electrical power supply network, the method comprising: measuring instantaneous at least one of electrical power and energy drawn from the external electrical power supply network by said power supply substation or substations; and if the power or energy drawn from the external network exceeds an assigned threshold, sending one or more vehicles a set point acting on a converter on board of said vehicle temporarily reducing at least one of the power and speed of rotation of a traction motor of said vehicle, wherein said vehicles move in accordance with a control profile, said control profile comprising starting the vehicle with a constant traction force which is applied until a maximum power is consumed by the vehicle, subsequent acceleration of the vehicle up to a maximum speed conforming to an equal power equation comprising traction force of the vehicle times speed of the vehicle is to remain constant.