For the 14 low-floor trams of the TMK2300LT series commissioned by the city of Liepāja, Latvia, we delivered the full scope of services, including design, production, functional testing, and delivery of power electronics converters. The project kicked off in May 2019 with the initial contract signed with KONČAR – Electric Vehicles Ltd., followed by two additional agreements to supply equipment and converters for all 14 tram vehicles.

A standout feature of this project is the introduction of battery-powered tram operation, allowing the trams to run independently of overhead power lines for the first time. This breakthrough was made possible by the development of the PN12DC battery converter, which amplifies the battery voltage approximately 15-fold to power the main drive converter. The PN12DC system provides operation for up to three minutes, enabling the tram to navigate through intersections during power outages or move within service depots without external power.

The first batch of equipment and converters was delivered in July 2020, and the final delivery for the 14th tram was successfully completed two years later, in July 2022. Despite challenges, including pandemic-related restrictions, we managed to complete the project on time. We continue to monitor the performance of our advanced equipment, now operating daily on the Liepāja tram network.