Applications: Traction & Trackside

Power electronics is essential to drive and control energy in transportation systems such as high-speed trains, city transit systems (metro, trams, trolleybuses…) freight trains and also diesel electric locomotives. LEM transducers provide control and protection signals to power converters and inverters that regulate energy to the electric motors (for propulsion) and to the auxiliaries (for air-conditioning, heating, lighting, electrical doors, ventilators etc)

This includes the early monitoring of the voltage network (changing by crossing the European borders) to make the powers electronics working accordingly.

Although this is true for on-board applications, LEM has also provided the same control and protection signals for wayside substations.

The rail industry is constantly changing and evolving. For example, privatization of rail networks can demand new requirements that LEM can help to meet such as on-board monitoring of power consumption (EM4T Energy Meter for Traction), solutions to trackside applications, rail maintenance and the monitoring of points (switches) machines or signaling conditions with some new transducers families.

LEM is always available to assist in adapting to these evolving technical applications.

Global systems for propulsion of the mining trucks are quite similar to the ones used for diesel-electric railway locomotives. Inverter control is the key for the suiting trucks propulsion. Current and voltage transducers are accountable for the right control. (See related downloads.)