Traction/Charging Converter belong to the AC Electric Propulsion System for the powered battery electric locomotive, designed and developed by INDA.

Designing of the converter is based on WO 2011/055230 A2 patent application.

The Traction/Charging Converter has a double function:

- In the running mode, feeds the traction motor with variable voltage and frequency providing the running mode at the controlled torque and regenerative electric braking mode with the fully energy recovering back to the batteries. In this mode, the traction motor has stator windings connected in star by an outside contactor (operating as
asynchronous motor with the short circuit rotor).

- In the batteries charging mode, the contacts of the outside contactor are opened and thus the Traction/Charging Converter is powered by three-phase network 3 x 400 V by means of the 3 statoric windings of the traction motor and converts this voltage in DC voltage that adapts to the charging requirements of the batteries (operation as three-phase network inductivity).