Alstom Transport Sa

Alstom Transport Technologies

Alstom

Alstom Holdings

Eric Bonin

Thierry Jobard

Abdelkrim Benchaib

Jean-Luc Thomas

Serge Poullain

Jean-Claude Alacoque

Sacheen Dausoa

Takuefou Meli

Jean-Pierre Lepage

Eric Rabasse

Toby Schilling

Gérard Faucon

A method for controlling the deformation of a wheel includes obtaining, for multiple predefined angular positions on the wheel, a parameter characterizing an angular velocity of the wheel when the wheel is in contact with the running surface at each predefined angular position while the wheel is rolling on a running surface, and calculating a radius value of the wheel for each predefined angular position using the parameter characterizing the angular velocity obtained for that angular position.

Method for controlling wheel deformation and associated device and system

A method controls the height of a floor of a car of a vehicle relative to a platform. The car includes a body provided with a distance sensor, at least one bogie and at least one secondary suspension between the bogie and the body. The method includes measuring the distance between the distance sensor and the platform via the distance sensor, calculating the difference between the height of the platform and the height of the floor from the measured distance, and adjusting the height of the secondary suspension based on the difference.

Vehicle height control method and associated vehicle

This electric safety braking device for an electric traction vehicle may allow the force/speed characteristic of the vehicle to be improved and includes a rotating electromechanical machine with permanent magnets which has at least one coil with electric terminals, a rheostatic electric braking torque production device, and a commutation device which are capable of connecting the electric terminals of the electromechanical machine to the braking torque production device. The electric safety braking device includes at least one inductor is connected in series between the braking torque production device and the electromechanical machine.

Electric safety braking device with permanent magnet motor and breaking torque control

This device is an electric safety brake which is intended for an electric traction vehicle, in particular a rail vehicle comprising: a rotating electromechanical machine () having permanent magnets having at least one coil with electric terminals (), a resistive braking torque production device (), an electromechanical commutator () which is capable of reliably connecting the electric terminals () of the machine () to the braking torque production device (). It is characterized in that the braking torque production device () comprises, on the one hand, a bipolar assembly () of at least one dissipative resistor, the assembly having two single connection terminals and forming a common terminal bipolar electric output load for all the terminals () of the mechanism and, on the other hand, means () for converting the currents from all the terminals () into a single current which is supplied to the two single terminals of the assembly of at least one dissipative resistor, the conversion means () having no active power switches.

Rheostatic safety braking device having a bipolar resistive assembly with permanent magnet motor

A method is described for regulating the average electromagnetic torque of a polyphase rotating electrical machine, supplied with a polyphase voltage and a polyphase current that are generated by an inverter. The method comprises a step of controlling the machine, using an exact response control process to do this, a step of determining the value of the harmonics of the voltage and/or the current which are generated by the inverter, and a step of calculating the instantaneous torque set point as a function of the value of the harmonics and an average torque set point, so as to produce an instantaneous torque set point suitable for limiting the difference between the average of the instantaneous electromagnetic torque, between two successive regulation times, and said average torque set point.

Method and system for regulating the average electromagnetic torque of a rotating electrical machine, storage medium and data structure for carrying out the method

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Jardin, France

Eric Bonin