Energy storage for locomotive electrical equipment

Can energy storage systems be used in electrified railways?

Currently, as the key technology of smart grids and distributed generation, energy storage systems (ESSs) have attracted worldwide attention [24, 25]. The ESS can play a vital role in power demand-side management and load shifting. Moreover, the potential of an ESS in electrified railways has been widely discussed.

What types of ESS devices are suitable for railway applications?

Several energy storage systems (ESS) are suitable for railway applications, including flywheels, EDLCs (Electric Double-Layer Capacitors), batteries, and SMESes (Superconducting Magnetic Energy Storage systems). Among these, battery ESS devices can serve as both energy and power suppliers due to their unique features. The advantages of these ESSes in railway applications are discussed in detail in Section 3.

What is RBE in electrified railway systems?

In electrified railway systems, RBE (Regenerative Braking Energy) is the energy that can be recaptured during braking. Almost all the ESSes (Energy Storage Systems) utilized for catenary-free operation are also considered for recapturing the RBE.

Do Esses reduce energy consumption in a railway system?

ESSes in a railway system contribute to reducing overall energy consumption by recovering Regenerative Braking Energy (RBE) and stabilizing line-voltage, which also reduces the burden of power-feeding systems.

Can a new energy storage traction power supply system improve regenerative braking energy utilisation?

To solve the negative sequence (NS) problem and enhance the regenerative braking energy (RBE) utilisation in an electrified railway, a novel energy storage traction power supply system (ESTPSS) is proposed in this study.

What are batteries and fuel cells used for in railway systems?

Batteries and fuel cells are ESS devices that can be integrated into an HESS to meet the energy requirements in railway systems. The high-energy device can be used as an energy supplier to meet long-term energy needs, while the high-power device can be used as a power supplier to satisfy short-term high power demands.