Energy storage for electrical equipment of harmony locomotive

Why is a storage system added in a locomotive?

As described in paragraph A, a storage system is added in the locomotive. The added storage element does not only provide an energy buffer for storing braking energy, but it also allows to decouple diesel electricity generation from traction power requirements.

What is the principle of a diesel - electric locomotive?

The principle of a diesel - electric locomotive is given in Fig. 5. The principal energy loss is due to the dissipation of braking energy in the dedicated rooftop braking resistors. In a standard system, there is no energy buffer between the diesel generator and the traction motors.

Why do we need a railway energy storage system?

_Railway energy storage systems must handle frequeny cycles, high currents, long lifetimes, high efficiency, and minimal costs. The imperative for moving towards a more sustainable world and against climate change and the immense potential for energy savings in electrified railway systems are well-established.

Can energy storage technologies be integrated into railway systems?

The wide array of available technologies provides a range of options to suit specific applications within the railway domain. This review thoroughly describes the operational mechanisms and distinctive properties of energy storage technologies that can be integrated into railway systems.

What are the different types of energy storage devices?

Three main storage devices are reviewed in this paper: batteries, supercapacitors and flywheels. Furthermore, two main challenges in application of energy storage systems are briefly discussed. 1876-6102 © 2017 The Authors. Published by Elsevier Ltd.

Why are La batteries used in railways?

It also takes longer to charge them, has a short cycle life, low energy and power densities, and cannot be discharged deeply . LA batteries have a long history of utilisation in railway applications. In Japan, they were installed in two lines in 1912 and 1914 in battery posts in parallel with the power substation.