US 7,397,149 B2 · Method and a system for monitoring and regulating the power consumed by a transport system

Abstract

A method of monitoring and regulating the power and the energy consumed by a transport system including electrically propelled vehicles, said transport system including a power supply system including one or more power supply substations connected to an external electrical power supply network, said power supply substation or substations supplying energy to traction substations supplying power to power supply line sections having vehicle-mounted current pick-up means connected thereto, each vehicle carrying a power converter which is supplied with power by said current pick-up means and which monitors the power supplied to a traction motor of said vehicle, which method includes the following steps: measuring the instantaneous electrical power and/or 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 tends to exceed an assigned threshold, sending one or more vehicles a set point acting on the converter on board said vehicle to reduce temporarily the power and/or the speed of rotation of the traction motor.

Claims24

Dependent claims

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.

1 more element

A system for monitoring and regulating the power and the energy consumed by a transport system comprising a plurality of vehicles having an electric traction motor and a power supply substation connected to an external electrical power supply network, the system comprises:

a measurer measuring and metering the electrical power drawn from the external electrical power supply network by the power supply substation;
a detector detecting times at which at least one of the power and the energy drawn from the external network exceeds an assigned threshold;
and
a transmitter sending at least one set point to at least one vehicle if the power or the energy drawn from the external network exceeds said threshold, said set points provided to a converter on board said vehicle temporarily reducing the at least one of power and the speed of rotation of the traction motor of said vehicle,
wherein said vehicles move in accordance with a control profile whereby the vehicles are started in compliance with a constant traction force which is applied until a maximum power is consumed by the vehicle, and wherein subsequent acceleration of the vehicles are 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.

2 more elements

Dependencies are inferred from the claim text.

Method and a system for monitoring and regulating the power consumed by a transport system

Life of this patent

Method and a system for monitoring and regulating the power consumed by a transport system

Life of this patent

Abstract

Claims24