FRIEM provides a complete line of converters using diodes, thyristors and IGBT to comply with the highest standards of availability and efficiency for a sustainable Rail and Urban Electrification.
FRIEM’s Converters fully comply with IEC or ANSI/IEEE standards and the most severe standards for heavy traction service. FRIEM designs compact and modern Converters maintaining an extremely high level of service continuity. Low losses, low operating temperatures, reduced maintenance and noise are granted by the specific design of the Power Section.
Being energy intensive and with a continuously growing demand, the transport industry is looking more and more for technologies and solutions to reduce energy losses. As a natural consequence of its experience in converters for traction and for renewable energy applications, FRIEM has developed a complete line of solutions to manage Braking Energy.
With an output voltage up to 3300V DC and DC output current up to 6000A, FRIEM rectifiers have the highest levels of performances, customization and reliability thanks to a robust structure, N-1 semiconductors redundancy, control system self-diagnostic and long operation life achieved with low operation temperature.
The ED-Con is integrated in the traction systems to dissipate the energy during the vehicle braking. Together with the
associated resistor banks in traction substations, instead of on-board resistors, it reduces the vehicle weight, the energy consumption and solves the problem of heat in the tunnels.
ERCon @750Vdc and 1500Vdc rated voltage at a 3.000 – 6000 A Current capacity @20% duty cycle.
The ES-Con is a converter that, in the system, has the task of storing and reusing the energy coming from the vehicle braking. Its use helps to achieve up to a 30% reduction of total energy consumption and allows to support local grid services as frequency regulation, peak shaving or load shedding.
The ER-Con is a DC/AC power converter that allows to recover the kinetic energy of the vehicles during the braking phase. The recovery takes place transferring energy from the DC line to the AC grid. Such a system can reduce the energy
consumption of a traction line up to the 30 per cent.