What is the primary function of inverters in traction systems?

In traction systems, inverters play a fundamental role by converting direct current (DC) power into alternating current (AC) power, which is necessary for the operation of traction motors. This process allows the traction motors to operate efficiently, enabling the train to accelerate and maintain desired speeds.

Using AC power in traction systems offers several advantages, including better control over motor speed and torque, as well as compatibility with regenerative braking systems that allow energy to be recaptured and fed back into the electrical network. This conversion is essential for the effective performance of electric trains, ensuring they run smoothly and efficiently.

Other options relate to functions that are not the primary role of inverters. While there are components in traction systems that handle auxiliary power conversion or voltage regulation, the specific and critical function of inverters is the transformation of DC into AC, which is essential for traction motor operation.