What is locomotive dynamic braking?

Locomotive dynamic braking is a method used to slow down or stop a train by converting the kinetic energy of the train into electrical energy. When dynamic braking is engaged, the traction motors on the locomotive are used as generators to convert the train's momentum into electrical energy which is then dissipated as heat by the resistors in the locomotive's dynamic brake system.

This braking method is particularly useful when descending steep slopes or when bringing a heavy train to a stop. By using dynamic braking, the train's mechanical brakes are less likely to overheat and fail, and the amount of wear and tear on the brakes is reduced.

In addition to improving safety and reducing maintenance costs, dynamic braking also has environmental benefits as it reduces the need for air brakes which require compressed air, and the resulting emissions from diesel-powered air compressors. Dynamic braking is also more efficient as it recovers energy that would otherwise be lost as heat through friction.

Overall, locomotive dynamic braking is an essential part of train operations and plays an important role in ensuring the safety and efficiency of rail transport.