Principle of flywheel energy storage wind power generation system

What is flywheel energy storage?

Since flywheel energy storage is used for power smoothing in wind power systems, the charging and discharging of flywheel energy storage and the fluctuating state of wind power are shown in the two-dimensional plane.

How a flywheel energy storage system can improve wind power quality?

The flywheel energy storage system can improve the quality of the grid by smoothing the high-frequency wind power output of wind power. The use of the MPC control system can realize the smoothing of wind power fluctuations on a short time scale. MPC combined with flywheel energy storage system can improve the power quality of wind power output.

How fast is a flywheel energy storage device for a 30 MW wind farm?

The high-frequency component of the wind power output power data accounts for less than 10 % of the total energy. Therefore, this study selects a 100 MJ/0.3 MW flywheel energy storage device for a 30 MW wind farm, and the rated speed of the flywheel is 4000 r/min. 2.2. Energy storage systems

What is a flywheel energy storage system (fess)?

The electrical motor/generator may be integrated with the flywheel, and operates at variable speed, and the power converter is usually provided by a power-electronic variable speed drive. The main feature of flywheel energy storage systems (FESS) generally is that they can be charged and discharged at high power for many chargedischarge cycles.

How much energy does a flywheel rotor store?

For example, a typical flywheel system with steel rotor developed in the 1980s for wind–diesel applications had energy storage capacity around 2 kW h @ 5000 rev/min, and rated power 45 kW. The rotor specific energy was 5 W h/kg, and the system specific power was 100 W/kg.

How do fly wheels store energy?

Fly wheels store energy in mechanical rotational energy to be then converted into the required power form when required. Energy storage is a vital component of any power system, as the stored energy can be used to offset inconsistencies in the power delivery system.