Modernized tramcar T3 MOD
Nowadays, using 3-phase traction drives belongs to worldwide trends in electric traction. The main advantage of these drives is the use of 3-phase asynchronous motors, that are easier to produce, more reliable in running and need no service. About 40-50% of power can be saved by the use of 3-phase drives. Used three-phase drives are recuperative with an integrated electrodynamic brake.
The control system of a tramcar excercises control over drives through a CAN interface. It is also possible to drive a tramcar from a back stand, to articulate up to three tramcars and to control them from one stand. There are several back-up regime levels in the traction drive system, that enable an emergency run of a tramcar in case of a failure of a traction group, control system or some other parts of electrical equipment. The electrical equipment is placed in containers at the place of original containers.Though the electrical equipment was made for tramcars T3, it can be used also in other types of tramcars after an adjustment. 
  • Control and diagnostic system of the vehicle
  • Container ot the main converters containing input choke, main inverters, brake resistor, and cooling fans of the container
  • Container of the auxiliary converters containing separating converter - stabiliser, inverter of the auxiliary drives and static converter - charger
  • Traction asynchronous motor
Company EVPÚ, a.s. has integrated the equipments for the modernization of public transport vehicles in Slovakia and Italy.

Control and diagnostic system of the vehicle

Container of the auxiliary converters

Auxiliary power converter for trolleybus
CMS RoskaSoft