A study on traction motor characteristic in EMU train

The main transformer of the train is the equipment that receives the AC 25KV power from the trolley wire and transforms it to an adequate voltage that can be used by the traction control system of the train. The primary winding side is the trolley wire voltage; the secondary winding side is the load side that supplies power to the main motor through the traction control system (Converter/ Inverter); the third winding side is the load side that supplies power to SIV that provides the service units of the train with power, which includes loads such as train air conditioning and ventilators, composed of multiple winding transformer. The main circuit system of the secondary winding is 2 parallel and 1 serial. Mcp 1 car and M cars have one traction control system which has 2 sets of converter/inverter to which the main transformer supplies power.