Flywheel Energy Storage System
Flywheel energy storage stores electrical energy in the form of mechanical energy in a high-speed rotating rotor. The core technology is the rotor material, support bearing, and
The core technology is the rotor material, support bearing, and electromechanical control system. This chapter mainly introduces the main structure of the flywheel energy storage system, the electromechanical control system, and the charging and discharging control process .
Hybrid Energy Storage Systems: Flywheel energy storage could be combined with other energy storage technologies such as batteries or pumped hydro to create hybrid energy storage systems. Hybrid systems could provide the benefits of both technologies, extending the useful length of time they can provide electricity.
Source: Endesa, S.A.U. Another significant project is the installation of a flywheel energy storage system by Red Eléctrica de España (the transmission system operator (TSO) of Spain) in the Mácher 66 kV substation, located in the municipality of Tías on Lanzarote (Canary Islands).
Figure 4.2 shows the main circuit topology of the flywheel energy storage system based on the Back-Back dual PWM converter, which consists of a grid-side LCL filter, a back-to-back dual PWM converter, a permanent magnet synchronous motor, a flywheel rotor, etc.
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