What is the primary function of the propulsion system in traction technology?

The primary function of the propulsion system in traction technology is to convert electrical energy into mechanical energy for movement. This process is crucial as it allows the train to propel forward by transforming the electrical energy supplied by the power source, such as third rail or overhead lines, into kinetic energy. This conversion involves motor systems that effectively manage how the power is applied, enabling the train to accelerate, decelerate, and maintain speed. The efficiency and reliability of this conversion directly affect the performance of the traction system, making this function of the propulsion system essential for a train's operation.

While the generation of electricity and the management of comfort and braking are important aspects of train operation, they do not define the primary role of the propulsion system, which is specifically focused on moving the train by converting energy types.