High-speed rail flywheel energy storage

What is a flywheel energy storage system?

Generally, a flywheel energy storage system consists of a rotating mass, a motor/generator set, bearings, containment, and a power electronic converter, as presented in Figure 1. Figure 1. Flywheel structure.

Do flywheel energy storage systems improve regenerative braking energy?

Provided by the Springer Nature SharedIt content-sharing initiative Policies and ethics The introduction of flywheel energy storage systems (FESS) in the urban rail transit power supply systems can effectively recover the train’s regenerative braking energy and stabilize the catenary voltage.

Can flywheel energy storage arrays control urban rail transit power supply systems?

The flywheel energy storage arrays (FESA) is an effective means to solve this problem, however, there are few researches on the control strategies of the FESA. In this paper, firstly analyzed the structure and characteristics of the urban rail transit power supply systems with FESA, and established a simulation model.

Does a light rail transit train have flywheel energy storage?

The introduction of flywheel energy storage systems in a light rail transit train is analyzed. Mathematical models of the train, driving cycle and flywheel energy storage system are developed. These models are used to study the energy consumption and the operating cost of a light rail transit train with and without flywheel energy storage.

What are high-speed flywheels?

They are currently the focus of industrial and academic research and development. There are some commercially available examples of high-speed flywheels [5, 6]. For instance, flywheels produced by VYCON Energy and Beacon Power are reported in the literature [7, 8]. Flywheels store energy mechanically in a rotating mass.

How do flywheels store energy?

Flywheels store energy mechanically in a rotating mass. During the charging process, they speed up the rotating mass and slow it down during the discharging process. The amount of energy stored in a flywheel depends on the rotating mass inertia (J) and the speed of rotation (ω), as follows: