Summarization request:
Please summarize the process of how an electric locomotive draws power and converts it to mechanical energy, as well as the equipment used to control its speed.

Source text:
The electric locomotive draws power from the over head equipment (OHE) with the help of Pantograph and converts this electrical energy to mechanical energy, in controlled manner, through Traction Motors which drive the axles.
To enable the locomotive to perform this task, it is equipped with suitable equipment, which enable loco pilot to control the speed of the train as per requirement by controlling the applied voltage to traction motors.
In conventional locomotives, 25KV, Single phase, AC supply is collected by a roof-mounted pantograph from the OHE and is stepped down by a transformer inside the locomotive.
This supply is then converted to DC supply by a full wave silicon rectifier and associated smoothing filter before being fed to the traction motors.
Torque / speed control is achieved by variation of the AC input voltage to the rectifier through an on-load tap changing arrangement on the primary winding of the loco transformer.
The equipment on electric locomotive, depending up on where it is located, can be classified in three different categories viz.
1. Roof equipment,
2. Inside equipment and
3. Under Frame equipment
Both the roof and the under frame equipment are subjected to lot of dust and atmospheric pollution and are therefore designed to withstand these severe working conditions.
Summarization request:
Please summarize the process of how an electric locomotive draws power and converts it to mechanical energy, as well as the equipment used to control its speed.

Source text:
The electric locomotive draws power from the over head equipment (OHE) with the help of Pantograph and converts this electrical energy to mechanical energy, in controlled manner, through Traction Motors which drive the axles.
To enable the locomotive to perform this task, it is equipped with suitable equipment, which enable loco pilot to control the speed of the train as per requirement by controlling the applied voltage to traction motors.
In conventional locomotives, 25KV, Single phase, AC supply is collected by a roof-mounted pantograph from the OHE and is stepped down by a transformer inside the locomotive.
This supply is then converted to DC supply by a full wave silicon rectifier and associated smoothing filter before being fed to the traction motors.
Torque / speed control is achieved by variation of the AC input voltage to the rectifier through an on-load tap changing arrangement on the primary winding of the loco transformer.
The equipment on electric locomotive, depending up on where it is located, can be classified in three different categories viz.
1. Roof equipment,
2. Inside equipment and
3. Under Frame equipment
Both the roof and the under frame equipment are subjected to lot of dust and atmospheric pollution and are therefore designed to withstand these severe working conditions.
user
Electric locomotives obtain electricity from overhead wires using pantographs. This alternating current is converted into direct current, which provides power to the traction motors that turn the axles. The voltage is initially decreased by a device known as a transformer. The alternating current is then rectified into direct current by a rectifier and filter. The speed of the locomotive is regulated by adjusting the input voltage to the transformer.
The pantographs and traction motors are built to endure difficult conditions. The main components include:
Equipment on the roof (pantographs) takes in the electricity. Inside, a transformer cuts down the voltage, a rectifier converts it to direct current, and a tap changer alters the transformer's input to control speed.
Equipment under the frame (traction motors) rotates the axles. The equipment on the roof and under the frame can handle pollution and debris.
assistant