Medcom has supplied auxiliary power converters using silicon carbide technology for the automatically operated trains of the London operator DLR

The Docklands Light Railway (DLR) is a modern system of automatically operated trains serving the East London area. As part of the modernisation of the rolling stock, the carrier plans to withdraw 33 of the most worn-out trains that will be replaced with new vehicles equipped with auxiliary power converters supplied by Medcom.

Modern auxiliary power converters designed and manufactured by Medcom are designed to provide 3x400 VAC and 110 VDC voltage to the low voltage circuits of DLR vehicles. The converters use technologically advanced MOSFET transistors based on silicon carbide (SiC). This groundbreaking technology, which Medcom implemented for the serial production of drive systems as early as 2018, allows for higher processing efficiency that translates into up to 2.5 months of free vehicle operation per year and a 30% reduction in vehicle operating costs in urban traffic. The use of solutions based on silicon carbide also makes it possible to reduce the weight and dimensions of devices by 30–45% (compared to traditional silicon Si transistors) and to reduce the level of emitted noise.

DLR plans to introduce new trains into service on their line from 2024 – all vehicles will be delivered to the carrier by 2026. The first of the new trains has been undergoing tests and integration with the DLR traffic control system since January 2023, which is to ensure reliability at the time of their final launch.

The supply of auxiliary power converters for DLR is another order recently carried out by Medcom in which silicon carbide technology was used. Today, over a thousand energy-efficient trams, e-buses, trolleybuses and locomotives with SiC technology from Medcom operate on European roads and tracks.


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