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A new Moderus Gamma with the SiC technology for Poznań

New Moderus Gamma low-floor trams manufactured for Poznań will be equipped with Medcom’s power electronics in the SiC technology as standard. The first vehicle was ceremoniously presented in October this year at the seat of the Modertrans company, and after all the required tests are carried out, it will be put into passenger service.

Under the Poznań contract, MEDCOM will equip a total of 30 single-ended and 20 double-ended trams. Deliveries have already began and include static converters in the full-SiC technology (PSM-50 SiC), traction inverters in the IGBT technology (FT-50-600), and the TCMS.

For the new Moderus Gamma, Medcom designed a single compact solution powering the tram’s traction motors and auxiliary circuits. Apart from four traction inverters, there is also a static converter, optimized thanks to the SiC technology, all in the same container. Each manufactured tram will be equipped with two containers of this type. Their additional advantage is the exceptionally quiet cooling system. 

“Moderus Gamma is yet another project demonstrating the outstanding properties of silicon carbide. The use of the SiC technology in the converter allowed us to decrease its weight and dimensions, and mount the devices within a single container, thus lowering the number of cables, reducing the total weight of the device, and saving space on the roof of the vehicle. At the same time, we managed to achieve much better operating parameters in terms of efficiency, operating temperature, switching speed, and output voltage stability. The SiC technology constitutes one of the main directions of development in modern public transport, because it considerably improves the efficiency of the devices and limits energy losses in converters, ultimately reducing vehicle operating costs," says Piotr Wroński, Vice-President at MEDCOM.

The Moderus Gamma tram is yet another railway vehicle in the Polish market equipped with power electronics in the SiC technology as standard. Medcom also delivers PSM-175 SiC auxiliary power converters – manufactured entirely in the high-frequency technology – for new Dragon 2 locomotives manufactured by Newag.

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